http://lod.bco-dmo.org/id/dataset/3865
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2013-01-22
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Total aerosol trace metal concentrations from R/V Knorr cruises KN199-04 and KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)
2014-09-16
publication
2014-09-16
revision
BCO-DMO Linked Data URI
2014-09-16
creation
http://lod.bco-dmo.org/id/dataset/3865
William M. Landing
Florida State University EOAS
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Landing, W. M. (2014) Total aerosol trace metal concentrations from R/V Knorr cruises KN199-04 and KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 16 Sept 2014) Version Date 2014-09-16 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/3865 [access date]
Total aerosol trace metal concentrations. Dataset Description: <p>Total aerosol trace metals (Li, Na, Mg, Al, P, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, As, Se, Rb, Sr, Zr, Cd, Sn, Sb, Cs, Ba, La, Nd, Pb, Th, U) from the 2010 and 2011 U.S. GEOTRACES North Atlantic Transect cruises.</p>
<p>Please note that some US GEOTRACES data may not be final, pending intercalibration results and further analysis. If you are interested in following changes to US GEOTRACES NAT data, there is an RSS feed available via the BCO-DMO <a href="http://www.bco-dmo.org/project/2066">US GEOTRACES project page</a> (scroll down and expand the "Datasets" section).</p> Methods and Sampling: <p><strong>Sample Collection</strong><br />
Aerosol samples were collected on acid-washed Whatman 41 (W41) cellulose ester filter papers deployed in one of two high-volume aerosol samplers (model 5170-VBL, Tisch Environmental) deployed simultaneously operating at approximately 1.2 cubic meters air per minute. The aerosol samplers were deployed on the ship’s flying bridge (14 m above sea level) as high off the water as possible. Contamination from the ship’s stack exhaust was avoided by controlling aerosol sampling with respect to wind sector and wind speed using an anemometer interfaced with a Campbell Scientific CR800&nbsp; datalogger and PC. The samplers were allowed to run when the wind was +/- 60 degrees from the bow and &gt; 0.5 m/s. When the wind failed to meet these two criteria, the motors were shut off automatically and not allowed to restart until the wind met both the speed and direction criteria for 5 continuous minutes. The anemometer was deployed nearby on a separate pole in 'free air' where turbulence from the wind crossing the bow did not cause the wind vane to wobble excessively.</p>
<p><strong>Trace Metal Determination</strong><br />
For determinations of total aerosol trace metal composition, the W41 filter discs were digested in tightly capped Teflon vials using sequential additions of concentrated acid solutions [nitric acid (Optima) and hydrofluoric acid (Optima)] at 150 degrees C (Morton et al., 2013, accepted). Any solution remaining after each digestion step was heated to dryness. After the final digestion and dry down, the samples were re-dissolved with 0.32 M nitric acid for analysis using inductively-coupled plasma mass spectrometry (ICP-MS; Agilent 7500CS and Thermo Element 2). All filter digestions were performed under a Class 100 laminar flow hood at the National High Magnetic Field Laboratory at Florida State University (FSU).</p>
<p>Filters for both the total and soluble aerosol concentration measurements were stored frozen prior to processing.<br />
<br />
Blank solutions for the acid digestions were prepared by digesting W41 discs that had been deployed in the aerosol samplers for 1 h while not in operation. For example, blanks accounted for 65.6 ± 0.52 ng m-3 air Fe (representing an average of 0.09 ± 0.001% of the Fe sample concentrations). Trace metal concentrations in the blanks were subtracted from all acid-digested filter samples. Leachate blanks were prepared by passing 100 mL of deionized water through W41 filters that had also been deployed in the same way as the acid digestion blanks. Blank leachates averaged 0.004 ± 0.001 ng m-3 air dissolved Fe (representing an average of 1.6 ± 0.38% of the Fe sample concentrations) and were subsequently subtracted from all leachate sample concentrations. Relative standard deviations of replicate analyses averaged 7% for total Fe concentrations. Replicate analyses of soluble Fe produced relative standard deviations of 10%.</p>
<p><strong>References:</strong><br />
<strong>Buck</strong>, C.S., et al. 2010. The solubility and deposition of aerosol Fe and other trace elements in the North Atlantic Ocean: observations from the A16N CLIVAR/CO2 repeat hydrography section. Marine Chemistry 120, 57-70. doi: <a href="http://dx.doi.org/10.1016/j.marchem.2008.08.003" target="_blank">10.1016/j.marchem.2008.08.003</a>.<br />
<strong>Buck</strong>, C. S., Landing, W.M.,&nbsp; Resing,&nbsp; J. A.,&nbsp; Lebon, G. T. 2006. Aerosol iron and aluminum solubility in the northwest Pacific Ocean: Results from the 2002 IOC cruise. Geochemistry, Geophysics, Geosystems. 7. doi: <a href="http://dx.doi.org/10.1029/2005GC000977" target="_blank">10.1029/2005GC000977</a>.<br />
<strong>Morton</strong>, P.L. et al. 2013. Methods for the sampling and analysis of marine aerosols: results from the 2008 GEOTRACES aerosol intercalibration experiment. Limnology and Oceanography Methods 11:62-78. doi: <a href="http://dx.doi.org/10.4319/lom.2013.11.62" target="_blank">10.4319/lom.2013.11.62</a>.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0752351 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0752351
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0929919 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0929919
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1132766 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1132766
onGoing
William M. Landing
Florida State University EOAS
850-644-6037
Department of Earth, Ocean, and Atmospheric Science 117 N. Woodward Avenue
Tallahassee
FL
32306-4320
USA
wlanding@fsu.edu
pointOfContact
asNeeded
Dataset Version: 16 Sept 2014
Unknown
cruise_id
cruise_part
sample_GEOTRC
PVC_plate_position
julian_day
day_start
month_start
year_start
time_start_utc
lat_start
lon_start
day_end
month_end
year_end
time_end_utc
lat_end
lon_end
air_vol_tot
air_vol_per_filt
Li_tot
Li_tot_avg
Li_tot_var
Li_tot_flag
Na_tot
Na_tot_avg
Na_tot_var
Na_tot_flag
Mg_tot
Mg_tot_avg
Mg_tot_var
Mg_tot_flag
Al_tot
Al_tot_avg
Al_tot_var
Al_tot_flag
P_tot
P_tot_avg
P_tot_var
P_tot_flag
Sc_tot
Sc_tot_avg
Sc_tot_var
Sc_tot_flag
Ti_tot
Ti_tot_avg
Ti_tot_var
Ti_tot_flag
V_tot
V_tot_avg
V_tot_var
V_tot_flag
Cr_tot
Cr_tot_avg
Cr_tot_var
Cr_tot_flag
Mn_tot
Mn_tot_avg
Mn_tot_var
Mn_tot_flag
Fe_tot
Fe_tot_avg
Fe_tot_var
Fe_tot_flag
Co_tot
Co_tot_avg
Co_tot_var
Co_tot_flag
Ni_tot
Ni_tot_avg
Ni_tot_var
Ni_tot_flag
Cu_tot
Cu_tot_avg
Cu_tot_var
Cu_tot_flag
Zn_tot
Zn_tot_avg
Zn_tot_var
Zn_tot_flag
Ga_tot
Ga_tot_avg
Ga_tot_var
Ga_tot_flag
As_tot
As_tot_avg
As_tot_var
As_tot_flag
Se_tot
Se_tot_avg
Se_tot_var
Se_tot_flag
Rb_tot
Rb_tot_avg
Rb_tot_var
Rb_tot_flag
Sr_tot
Sr_tot_avg
Sr_tot_var
Sr_tot_flag
Zr_tot
Zr_tot_avg
Zr_tot_var
Zr_tot_flag
Cd_tot
Cd_tot_avg
Cd_tot_var
Cd_tot_flag
Sn_tot
Sn_tot_avg
Sn_tot_var
Sn_tot_flag
Sb_tot
Sb_tot_avg
Sb_tot_var
Sb_tot_flag
Cs_tot
Cs_tot_avg
Cs_tot_var
Cs_tot_flag
Ba_tot
Ba_tot_avg
Ba_tot_var
Ba_tot_flag
La_tot
La_tot_avg
La_tot_var
La_tot_flag
Ce_tot
Ce_tot_avg
Ce_tot_var
Ce_tot_flag
Nd_tot
Nd_tot_avg
Nd_tot_var
Nd_tot_flag
Pb_tot
Pb_tot_avg
Pb_tot_var
Pb_tot_flag
Th_tot
Th_tot_avg
Th_tot_var
Th_tot_flag
U_tot
U_tot_avg
U_tot_var
U_tot_flag
station_GEOTRC
event_GEOTRC
ISO_DateTime_UTC_start
ISO_DateTime_UTC_end
Aerosol Sampler
Anemometer
Inductively Coupled Plasma Mass Spectrometer
theme
None, User defined
Cruise identfier
cruise_part
sample identification
No BCO-DMO term
Julian day as a decimal (time elapsed in days from 00:00 on January 1st 4713 BC)
day_start
month_start
year_start
time_start
latitude at start time of measurement
longitude at start time of measurement
day_end
month_end
year_end
time_end
latitude at end time of measurement
longitude at end time of measurement
sample_volume
metal concentration in atmosphere
station
event
ISO_DateTime_UTC
featureType
BCO-DMO Standard Parameters
Aerosol Sampler
Anemometer
Inductively Coupled Plasma Mass Spectrometer
instrument
BCO-DMO Standard Instruments
KN199-04
KN204-01
service
Deployment Activity
Subtropical northern Atlantic Ocean
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
U.S. GEOTRACES
http://www.geotraces.org/
U.S. GEOTRACES
GEOTRACES is a SCOR sponsored program; and funding for program infrastructure development is provided by the U.S. National Science Foundation.
GEOTRACES gained momentum following a special symposium, S02: Biogeochemical cycling of trace elements and isotopes in the ocean and applications to constrain contemporary marine processes (GEOSECS II), at a 2003 Goldschmidt meeting convened in Japan. The GEOSECS II acronym referred to the Geochemical Ocean Section Studies To determine full water column distributions of selected trace elements and isotopes, including their concentration, chemical speciation, and physical form, along a sufficient number of sections in each ocean basin to establish the principal relationships between these distributions and with more traditional hydrographic parameters;
* To evaluate the sources, sinks, and internal cycling of these species and thereby characterize more completely the physical, chemical and biological processes regulating their distributions, and the sensitivity of these processes to global change; and
* To understand the processes that control the concentrations of geochemical species used for proxies of the past environment, both in the water column and in the substrates that reflect the water column.
GEOTRACES will be global in scope, consisting of ocean sections complemented by regional process studies. Sections and process studies will combine fieldwork, laboratory experiments and modelling. Beyond realizing the scientific objectives identified above, a natural outcome of this work will be to build a community of marine scientists who understand the processes regulating trace element cycles sufficiently well to exploit this knowledge reliably in future interdisciplinary studies.
Expand "Projects" below for information about and data resulting from individual US GEOTRACES research projects.
U.S. GEOTRACES
largerWorkCitation
program
U.S. GEOTRACES North Atlantic Transect (GA03)
https://www.geotraces.org/
U.S. GEOTRACES North Atlantic Transect (GA03)
<p><em>Much of this text appeared in an article published in OCB News, October 2008, by the OCB Project Office.</em></p>
<p>The first U.S. GEOTRACES Atlantic Section will be specifically centered around a sampling cruise to be carried out in the North Atlantic in 2010. Ed Boyle (MIT) and Bill Jenkins (WHOI) organized a three-day planning workshop that was held September 22-24, 2008 at the Woods Hole Oceanographic Institution. The main goal of the workshop, sponsored by the National Science Foundation and the U.S. GEOTRACES Scientific Steering Committee, was to design the implementation plan for the first U.S. GEOTRACES Atlantic Section. The primary cruise design motivation was to improve knowledge of the sources, sinks and internal cycling of Trace Elements and their Isotopes (TEIs) by studying their distributions along a section in the North Atlantic (Figure 1). The North Atlantic has the full suite of processes that affect TEIs, including strong meridional advection, boundary scavenging and source effects, aeolian deposition, and the salty Mediterranean Outflow. The North Atlantic is particularly important as it lies at the "origin" of the global Meridional Overturning Circulation.</p>
<p>It is well understood that many trace metals play important roles in biogeochemical processes and the carbon cycle, yet very little is known about their large-scale distributions and the regional scale processes that affect them. Recent advances in sampling and analytical techniques, along with advances in our understanding of their roles in enzymatic and catalytic processes in the open ocean provide a natural opportunity to make substantial advances in our understanding of these important elements. Moreover, we are motivated by the prospect of global change and the need to understand the present and future workings of the ocean's biogeochemistry. The GEOTRACES strategy is to measure a broad suite of TEIs to constrain the critical biogeochemical processes that influence their distributions. In addition to these "exotic" substances, more traditional properties, including macronutrients (at micromolar and nanomolar levels), CTD, bio-optical parameters, and carbon system characteristics will be measured. The cruise starts at Line W, a repeat hydrographic section southeast of Cape Cod, extends to Bermuda and subsequently through the North Atlantic oligotrophic subtropical gyre, then transects into the African coast in the northern limb of the coastal upwelling region. From there, the cruise goes northward into the Mediterranean outflow. The station locations shown on the map are for the "fulldepth TEI" stations, and constitute approximately half of the stations to be ultimately occupied.</p>
<p><em>Figure 1. The proposed 2010 Atlantic GEOTRACES cruise track plotted on dissolved oxygen at 400 m depth. Data from the World Ocean Atlas (Levitus et al., 2005) were plotted using Ocean Data View (courtesy Reiner Schlitzer). [click on the image to view a larger version]</em><br />
<a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/GEOTRACES_Atl_stas.jpg" target="_blank"><img alt="" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/GEOTRACES_Atl_stas.jpg" style="width:350px" /></a></p>
<p>Hydrography, CTD and nutrient measurements will be supported by the Ocean Data Facility (J. Swift) at Scripps Institution of Oceanography and funded through NSF Facilities. They will be providing an additional CTD rosette system along with nephelometer and LADCP. A trace metal clean Go-Flo Rosette and winch will be provided by the group at Old Dominion University (G. Cutter) along with a towed underway pumping system.</p>
<p>The North Atlantic Transect cruise began in 2010 with KN199 leg 4 (station sampling) and leg 5 (underway sampling only) (Figure 2).</p>
<p><a href="http://bcodata.whoi.edu//US_GEOTRACES/AtlanticSection/Cruise_Report_for_Knorr_199_Final_v3.pdf" target="_blank">KN199-04 Cruise Report (PDF)</a></p>
<p><em>Figure 2. The red line shows the cruise track for the first leg of the US Geotraces North Atlantic Transect on the R/V Knorr in October 2010. The rest of the stations (beginning with 13) will be completed in October-December 2011 on the R/V Knorr (courtesy of Bill Jenkins, Chief Scientist, GNAT first leg). [click on the image to view a larger version]</em><br />
<a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/GNAT_stationPlan.jpg" target="_blank"><img alt="Atlantic Transect Station location map" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/GNAT_stationPlan_sm.jpg" style="width:350px" /></a></p>
<p>The section completion effort resumed again in November 2011 with KN204-01A,B (Figure 3).</p>
<p><a href="http://bcodata.whoi.edu//US_GEOTRACES/AtlanticSection/Submitted_Preliminary_Cruise_Report_for_Knorr_204-01.pdf" target="_blank">KN204-01A,B Cruise Report (PDF)</a></p>
<p><em>Figure 3. Station locations occupied on the US Geotraces North Atlantic Transect on the R/V Knorr in November 2011. [click on the image to view a larger version]</em><br />
<a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/KN204-01_Stations.png" target="_blank"><img alt="Atlantic Transect/Part 2 Station location map" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/KN204-01_Stations.png" style="width:350px" /></a></p>
<p>Data from the North Atlantic Transect cruises are available under the Datasets heading below, and consensus values for the SAFe and North Atlantic GEOTRACES Reference Seawater Samples are available from the GEOTRACES Program Office: <a href="http://www.geotraces.org/science/intercalibration/322-standards-and-reference-materials?acm=455_215" target="_blank">Standards and Reference Materials</a></p>
<p><strong>ADCP data</strong> are available from the Currents ADCP group at the University of Hawaii at the links below:<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2010.html#kn199_4" target="_blank">KN199-04</a> (leg 1 of 2010 cruise; Lisbon to Cape Verde)<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2010.html#kn199_5" target="_blank">KN199-05</a> (leg 2 of 2010 cruise; Cape Verde to Charleston, NC)<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2011.html#kn204_01" target="_blank">KN204-01A</a> (part 1 of 2011 cruise; Woods Hole, MA to Bermuda)<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2011.html#kn204_02" target="_blank">KN204-01B</a> (part 2 of 2011 cruise; Bermuda to Cape Verde)</p>
U.S. GEOTRACES NAT
largerWorkCitation
project
eng; USA
oceans
Subtropical northern Atlantic Ocean
2014-09-16
Subtropical western and eastern North Atlantic Ocean (GA03)
0
BCO-DMO catalogue of parameters from Total aerosol trace metal concentrations from R/V Knorr cruises KN199-04 and KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/32266.rdf
Name: cruise_id
Units: dimensionless
Description: <p>Official cruise identifier e.g. KN199-04 = R/V Knorr cruise number 199-04.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32267.rdf
Name: cruise_part
Units: text
Description: <p>Part of cruise. For KN204-01:<br />
A = 11/6/2011 to 11/18/2011 (Woods Hole to Bermuda)<br />
B = 11/19/2011 to 12/11/2011 (Bermuda to Praia, Cabo Verde)</p>
http://lod.bco-dmo.org/id/dataset-parameter/32268.rdf
Name: sample_GEOTRC
Units: dimensionless
Description: <p>Unique identifying number for US GEOTRACES samples; ranges from 5033 to 6078 for KN199-04 and from 6112 to 8148 for KN204-01. PI-supplied values were identical to those in the intermediate<br />
US GEOTRACES master file. Originally submitted as 'sample #', this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32269.rdf
Name: PVC_plate_position
Units: unitless
Description: <p>PVC plate position. Location of W41 disc filter on 12 position filter holder.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32270.rdf
Name: julian_day
Units: jjj
Description: <p>Julian day at start of sampling event.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32271.rdf
Name: day_start
Units: dd (01 to 31)
Description: <p>2-digit day of month at start of sampling event.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32272.rdf
Name: month_start
Units: mm (01 to 12)
Description: <p>2-digit month of year at start of sampling event.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32273.rdf
Name: year_start
Units: YYYY
Description: <p>4-digit year at start of sampling event.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32274.rdf
Name: time_start_utc
Units: HHMM
Description: <p>Time (UTC) at start of sampling event. 24-hour clock.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32275.rdf
Name: lat_start
Units: decimal degrees
Description: <p>Latitude at start of sampling event. North = Positive.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32276.rdf
Name: lon_start
Units: decimal degrees
Description: <p>Longitude at start of sampling event. West = Negative.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32277.rdf
Name: day_end
Units: dd (01 to 31)
Description: <p>2-digit day of month at end of sampling event.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32278.rdf
Name: month_end
Units: mm (01 to 12)
Description: <p>2-digit month of year at end of sampling event.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32279.rdf
Name: year_end
Units: YYYY
Description: <p>4-digit year at end of sampling event.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32280.rdf
Name: time_end_utc
Units: HHMM
Description: <p>Time (UTC) at end of sampling event. 24-hour clock.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32281.rdf
Name: lat_end
Units: decimal degrees
Description: <p>Latitude at end of sampling event. North = Positive.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32282.rdf
Name: lon_end
Units: decimal degrees
Description: <p>Longitude at end of sampling event. West = Negative.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32677.rdf
Name: air_vol_tot
Units: m^3
Description: <p>Total volume of air sampled in cubic meters.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32678.rdf
Name: air_vol_per_filt
Units: m^3
Description: <p>Volume of air filtered per filter in cubic meters.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32679.rdf
Name: Li_tot
Units: ng/m^3
Description: <p>Total aerosol Li (Lithium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32680.rdf
Name: Li_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Li average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32681.rdf
Name: Li_tot_var
Units: ng/m^3
Description: <p>Total aerosol Li sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32682.rdf
Name: Li_tot_flag
Units: unitless
Description: <p>Total aerosol Li concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32683.rdf
Name: Na_tot
Units: ng/m^3
Description: <p>Total aerosol Na (Sodium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32684.rdf
Name: Na_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Na average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32685.rdf
Name: Na_tot_var
Units: ng/m^3
Description: <p>Total aerosol Na sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32686.rdf
Name: Na_tot_flag
Units: unitless
Description: <p>Total aerosol Na concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32687.rdf
Name: Mg_tot
Units: ng/m^3
Description: <p>Total aerosol Mg (Magnesium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32688.rdf
Name: Mg_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Mg average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32689.rdf
Name: Mg_tot_var
Units: ng/m^3
Description: <p>Total aerosol Mg sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32690.rdf
Name: Mg_tot_flag
Units: unitless
Description: <p>Total aerosol Mg concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32691.rdf
Name: Al_tot
Units: ng/m^3
Description: <p>Total aerosol Al (Aluminum) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32692.rdf
Name: Al_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Al average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32693.rdf
Name: Al_tot_var
Units: ng/m^3
Description: <p>Total aerosol Al sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32694.rdf
Name: Al_tot_flag
Units: unitless
Description: <p>Total aerosol Al concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32695.rdf
Name: P_tot
Units: ng/m^3
Description: <p>Total aerosol P (Phosphorus) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32696.rdf
Name: P_tot_avg
Units: ng/m^3
Description: <p>Total aerosol P average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32697.rdf
Name: P_tot_var
Units: ng/m^3
Description: <p>Total aerosol P sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32698.rdf
Name: P_tot_flag
Units: unitless
Description: <p>Total aerosol P concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32699.rdf
Name: Sc_tot
Units: ng/m^3
Description: <p>Total aerosol Sc (Scandium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32700.rdf
Name: Sc_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Sc average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32701.rdf
Name: Sc_tot_var
Units: ng/m^3
Description: <p>Total aerosol Sc sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32702.rdf
Name: Sc_tot_flag
Units: unitless
Description: <p>Total aerosol Sc concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32703.rdf
Name: Ti_tot
Units: ng/m^3
Description: <p>Total aerosol Ti (Titanium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32704.rdf
Name: Ti_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Ti average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32705.rdf
Name: Ti_tot_var
Units: ng/m^3
Description: <p>Total aerosol Ti sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32706.rdf
Name: Ti_tot_flag
Units: unitless
Description: <p>Total aerosol Ti concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32707.rdf
Name: V_tot
Units: ng/m^3
Description: <p>Total aerosol V (Vanadium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32708.rdf
Name: V_tot_avg
Units: ng/m^3
Description: <p>Total aerosol V average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32709.rdf
Name: V_tot_var
Units: ng/m^3
Description: <p>Total aerosol V sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32710.rdf
Name: V_tot_flag
Units: unitless
Description: <p>Total aerosol V concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32711.rdf
Name: Cr_tot
Units: ng/m^3
Description: <p>Total aerosol Cr (Chromium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32712.rdf
Name: Cr_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Cr average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32713.rdf
Name: Cr_tot_var
Units: ng/m^3
Description: <p>Total aerosol Cr sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32714.rdf
Name: Cr_tot_flag
Units: unitless
Description: <p>Total aerosol Cr concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32715.rdf
Name: Mn_tot
Units: ng/m^3
Description: <p>Total aerosol Mn (Manganese) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32716.rdf
Name: Mn_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Mn average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32717.rdf
Name: Mn_tot_var
Units: ng/m^3
Description: <p>Total aerosol Mn sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32718.rdf
Name: Mn_tot_flag
Units: unitless
Description: <p>Total aerosol Mn concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32719.rdf
Name: Fe_tot
Units: ng/m^3
Description: <p>Total aerosol Fe (Iron) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32720.rdf
Name: Fe_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Fe average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32721.rdf
Name: Fe_tot_var
Units: ng/m^3
Description: <p>Total aerosol Fe sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32722.rdf
Name: Fe_tot_flag
Units: unitless
Description: <p>Total aerosol Fe concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32723.rdf
Name: Co_tot
Units: ng/m^3
Description: <p>Total aerosol Co (Cobalt) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32724.rdf
Name: Co_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Co average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32725.rdf
Name: Co_tot_var
Units: ng/m^3
Description: <p>Total aerosol Co sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32726.rdf
Name: Co_tot_flag
Units: unitless
Description: <p>Total aerosol Co concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32727.rdf
Name: Ni_tot
Units: ng/m^3
Description: <p>Total aerosol Ni (Nickel) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32728.rdf
Name: Ni_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Ni average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32729.rdf
Name: Ni_tot_var
Units: ng/m^3
Description: <p>Total aerosol Ni sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32730.rdf
Name: Ni_tot_flag
Units: unitless
Description: <p>Total aerosol Ni concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32731.rdf
Name: Cu_tot
Units: ng/m^3
Description: <p>Total aerosol Cu (Copper) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32732.rdf
Name: Cu_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Cu average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32733.rdf
Name: Cu_tot_var
Units: ng/m^3
Description: <p>Total aerosol Cu sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32734.rdf
Name: Cu_tot_flag
Units: unitless
Description: <p>Total aerosol Cu concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32735.rdf
Name: Zn_tot
Units: ng/m^3
Description: <p>Total aerosol Zn (Zinc) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32736.rdf
Name: Zn_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Zn average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32737.rdf
Name: Zn_tot_var
Units: ng/m^3
Description: <p>Total aerosol Zn sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32738.rdf
Name: Zn_tot_flag
Units: unitless
Description: <p>Total aerosol Zn concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32739.rdf
Name: Ga_tot
Units: ng/m^3
Description: <p>Total aerosol Ga (Gallium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32740.rdf
Name: Ga_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Ga average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32741.rdf
Name: Ga_tot_var
Units: ng/m^3
Description: <p>Total aerosol Ga sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32742.rdf
Name: Ga_tot_flag
Units: unitless
Description: <p>Total aerosol Ga concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32743.rdf
Name: As_tot
Units: ng/m^3
Description: <p>Total aerosol As (Arsenic) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32744.rdf
Name: As_tot_avg
Units: ng/m^3
Description: <p>Total aerosol As average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32745.rdf
Name: As_tot_var
Units: ng/m^3
Description: <p>Total aerosol As sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32746.rdf
Name: As_tot_flag
Units: unitless
Description: <p>Total aerosol As concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32747.rdf
Name: Se_tot
Units: ng/m^3
Description: <p>Total aerosol Se (Selenium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32748.rdf
Name: Se_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Se average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32749.rdf
Name: Se_tot_var
Units: ng/m^3
Description: <p>Total aerosol Se sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32750.rdf
Name: Se_tot_flag
Units: unitless
Description: <p>Total aerosol Se concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32751.rdf
Name: Rb_tot
Units: ng/m^3
Description: <p>Total aerosol Rb (Rubidium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32752.rdf
Name: Rb_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Rb average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32753.rdf
Name: Rb_tot_var
Units: ng/m^3
Description: <p>Total aerosol Rb sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32754.rdf
Name: Rb_tot_flag
Units: unitless
Description: <p>Total aerosol Rb concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32755.rdf
Name: Sr_tot
Units: ng/m^3
Description: <p>Total aerosol Sr (Strontium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32756.rdf
Name: Sr_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Sr average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32757.rdf
Name: Sr_tot_var
Units: ng/m^3
Description: <p>Total aerosol Sr sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32758.rdf
Name: Sr_tot_flag
Units: unitless
Description: <p>Total aerosol Sr concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32759.rdf
Name: Zr_tot
Units: ng/m^3
Description: <p>Total aerosol Zr (Zirconium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32760.rdf
Name: Zr_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Zr average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32761.rdf
Name: Zr_tot_var
Units: ng/m^3
Description: <p>Total aerosol Zr sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32762.rdf
Name: Zr_tot_flag
Units: unitless
Description: <p>Total aerosol Zr concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32763.rdf
Name: Cd_tot
Units: ng/m^3
Description: <p>Total aerosol Cd (Cadmium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32764.rdf
Name: Cd_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Cd average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32765.rdf
Name: Cd_tot_var
Units: ng/m^3
Description: <p>Total aerosol Cd sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32766.rdf
Name: Cd_tot_flag
Units: unitless
Description: <p>Total aerosol Cd concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32767.rdf
Name: Sn_tot
Units: ng/m^3
Description: <p>Total aerosol Sn (Tin) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32768.rdf
Name: Sn_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Sn average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32769.rdf
Name: Sn_tot_var
Units: ng/m^3
Description: <p>Total aerosol Sn sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32770.rdf
Name: Sn_tot_flag
Units: unitless
Description: <p>Total aerosol Sn concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32771.rdf
Name: Sb_tot
Units: ng/m^3
Description: <p>Total aerosol Sb (Antimony) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32772.rdf
Name: Sb_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Sb average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32773.rdf
Name: Sb_tot_var
Units: ng/m^3
Description: <p>Total aerosol Sb sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32774.rdf
Name: Sb_tot_flag
Units: unitless
Description: <p>Total aerosol Sb concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32775.rdf
Name: Cs_tot
Units: ng/m^3
Description: <p>Total aerosol Cs (Caesium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32776.rdf
Name: Cs_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Cs average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32777.rdf
Name: Cs_tot_var
Units: ng/m^3
Description: <p>Total aerosol Cs sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32778.rdf
Name: Cs_tot_flag
Units: unitless
Description: <p>Total aerosol Cs concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32779.rdf
Name: Ba_tot
Units: ng/m^3
Description: <p>Total aerosol Ba (Barium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32780.rdf
Name: Ba_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Ba average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32781.rdf
Name: Ba_tot_var
Units: ng/m^3
Description: <p>Total aerosol Ba sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32782.rdf
Name: Ba_tot_flag
Units: unitless
Description: <p>Total aerosol Ba concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32783.rdf
Name: La_tot
Units: ng/m^3
Description: <p>Total aerosol La (Lanthanum) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32784.rdf
Name: La_tot_avg
Units: ng/m^3
Description: <p>Total aerosol La average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32785.rdf
Name: La_tot_var
Units: ng/m^3
Description: <p>Total aerosol La sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32786.rdf
Name: La_tot_flag
Units: unitless
Description: <p>Total aerosol La concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32787.rdf
Name: Ce_tot
Units: ng/m^3
Description: <p>Total aerosol Ce (Cerium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32788.rdf
Name: Ce_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Ce average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32789.rdf
Name: Ce_tot_var
Units: ng/m^3
Description: <p>Total aerosol Ce sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32790.rdf
Name: Ce_tot_flag
Units: unitless
Description: <p>Total aerosol Ce concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32791.rdf
Name: Nd_tot
Units: ng/m^3
Description: <p>Total aerosol Nd (Neodymium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32792.rdf
Name: Nd_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Nd average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32793.rdf
Name: Nd_tot_var
Units: ng/m^3
Description: <p>Total aerosol Nd sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32794.rdf
Name: Nd_tot_flag
Units: unitless
Description: <p>Total aerosol Nd concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32795.rdf
Name: Pb_tot
Units: ng/m^3
Description: <p>Total aerosol Pb (Lead) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32796.rdf
Name: Pb_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Pb average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32797.rdf
Name: Pb_tot_var
Units: ng/m^3
Description: <p>Total aerosol Pb sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32798.rdf
Name: Pb_tot_flag
Units: unitless
Description: <p>Total aerosol Pb concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32799.rdf
Name: Th_tot
Units: ng/m^3
Description: <p>Total aerosol Th (Thorium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32800.rdf
Name: Th_tot_avg
Units: ng/m^3
Description: <p>Total aerosol Th average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32801.rdf
Name: Th_tot_var
Units: ng/m^3
Description: <p>Total aerosol Th sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32802.rdf
Name: Th_tot_flag
Units: unitless
Description: <p>Total aerosol Th concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32803.rdf
Name: U_tot
Units: ng/m^3
Description: <p>Total aerosol U (Uranium) concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32804.rdf
Name: U_tot_avg
Units: ng/m^3
Description: <p>Total aerosol U average sample concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32805.rdf
Name: U_tot_var
Units: ng/m^3
Description: <p>Total aerosol U sample concentration variance.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32806.rdf
Name: U_tot_flag
Units: unitless
Description: <p>Total aerosol U concnetration data quality flag.</p>
http://lod.bco-dmo.org/id/dataset-parameter/33148.rdf
Name: station_GEOTRC
Units: dimensionless
Description: <p>GEOTRACES station number; ranges from 1 through 12 for KN199-04 and 1 through 24 for KN204-01. Stations 7 and 9 were skipped on KN204-01. Some GeoFish stations are denoted as X_to_Y indicating <br /> the tow occurred between stations X and Y. Values were added from the intermediate US GEOTRACES master file (see Processing Description).</p>
http://lod.bco-dmo.org/id/dataset-parameter/33149.rdf
Name: event_GEOTRC
Units: dimensionless
Description: <p>Unique identifying number for US GEOTRACES sampling events; ranges from 2001 to 2225 for KN199-04 events and from 3001 to 3282 for KN204-01 events. Values were added from the intermediate<br /> US GEOTRACES master file (see Processing Description).</p>
http://lod.bco-dmo.org/id/dataset-parameter/33223.rdf
Name: ISO_DateTime_UTC_start
Units: YYYY-MM-DDTHH:MM:SS[.xx][+/-TZ]
Description: <p>Date and time (UTC) formatted to ISO 8601 standard. Calculated from starting date and time provided.</p>
http://lod.bco-dmo.org/id/dataset-parameter/33224.rdf
Name: ISO_DateTime_UTC_end
Units: YYYY-MM-DDTHH:MM:SS[.xx][+/-TZ]
Description: <p>Date and time (UTC) formatted to ISO 8601 standard. Calculated from ending date and time provided.</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
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https://datadocs.bco-dmo.org/file/KAAGo3muByNOM5/Trace_Metal_Total_Aerosol_joined.csv
Trace_Metal_Total_Aerosol_joined.csv
Primary data file for dataset ID 3865
download
https://osprey.bco-dmo.org/dataset/3865/data/download
download
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dataset
<p><strong>Sample Collection</strong><br />
Aerosol samples were collected on acid-washed Whatman 41 (W41) cellulose ester filter papers deployed in one of two high-volume aerosol samplers (model 5170-VBL, Tisch Environmental) deployed simultaneously operating at approximately 1.2 cubic meters air per minute. The aerosol samplers were deployed on the ship’s flying bridge (14 m above sea level) as high off the water as possible. Contamination from the ship’s stack exhaust was avoided by controlling aerosol sampling with respect to wind sector and wind speed using an anemometer interfaced with a Campbell Scientific CR800&nbsp; datalogger and PC. The samplers were allowed to run when the wind was +/- 60 degrees from the bow and &gt; 0.5 m/s. When the wind failed to meet these two criteria, the motors were shut off automatically and not allowed to restart until the wind met both the speed and direction criteria for 5 continuous minutes. The anemometer was deployed nearby on a separate pole in 'free air' where turbulence from the wind crossing the bow did not cause the wind vane to wobble excessively.</p>
<p><strong>Trace Metal Determination</strong><br />
For determinations of total aerosol trace metal composition, the W41 filter discs were digested in tightly capped Teflon vials using sequential additions of concentrated acid solutions [nitric acid (Optima) and hydrofluoric acid (Optima)] at 150 degrees C (Morton et al., 2013, accepted). Any solution remaining after each digestion step was heated to dryness. After the final digestion and dry down, the samples were re-dissolved with 0.32 M nitric acid for analysis using inductively-coupled plasma mass spectrometry (ICP-MS; Agilent 7500CS and Thermo Element 2). All filter digestions were performed under a Class 100 laminar flow hood at the National High Magnetic Field Laboratory at Florida State University (FSU).</p>
<p>Filters for both the total and soluble aerosol concentration measurements were stored frozen prior to processing.<br />
<br />
Blank solutions for the acid digestions were prepared by digesting W41 discs that had been deployed in the aerosol samplers for 1 h while not in operation. For example, blanks accounted for 65.6 ± 0.52 ng m-3 air Fe (representing an average of 0.09 ± 0.001% of the Fe sample concentrations). Trace metal concentrations in the blanks were subtracted from all acid-digested filter samples. Leachate blanks were prepared by passing 100 mL of deionized water through W41 filters that had also been deployed in the same way as the acid digestion blanks. Blank leachates averaged 0.004 ± 0.001 ng m-3 air dissolved Fe (representing an average of 1.6 ± 0.38% of the Fe sample concentrations) and were subsequently subtracted from all leachate sample concentrations. Relative standard deviations of replicate analyses averaged 7% for total Fe concentrations. Replicate analyses of soluble Fe produced relative standard deviations of 10%.</p>
<p><strong>References:</strong><br />
<strong>Buck</strong>, C.S., et al. 2010. The solubility and deposition of aerosol Fe and other trace elements in the North Atlantic Ocean: observations from the A16N CLIVAR/CO2 repeat hydrography section. Marine Chemistry 120, 57-70. doi: <a href="http://dx.doi.org/10.1016/j.marchem.2008.08.003" target="_blank">10.1016/j.marchem.2008.08.003</a>.<br />
<strong>Buck</strong>, C. S., Landing, W.M.,&nbsp; Resing,&nbsp; J. A.,&nbsp; Lebon, G. T. 2006. Aerosol iron and aluminum solubility in the northwest Pacific Ocean: Results from the 2002 IOC cruise. Geochemistry, Geophysics, Geosystems. 7. doi: <a href="http://dx.doi.org/10.1029/2005GC000977" target="_blank">10.1029/2005GC000977</a>.<br />
<strong>Morton</strong>, P.L. et al. 2013. Methods for the sampling and analysis of marine aerosols: results from the 2008 GEOTRACES aerosol intercalibration experiment. Limnology and Oceanography Methods 11:62-78. doi: <a href="http://dx.doi.org/10.4319/lom.2013.11.62" target="_blank">10.4319/lom.2013.11.62</a>.</p>
Specified by the Principal Investigator(s)
<p>Concentrations below the detection limit are flagged as "below_DL" (originally " &lt;_DL")&nbsp; in the data columns. Representative detection limits were calculated using an air volume of 1200 cubic meters. See <a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/Landing/Aerosol_Detection_Limits.PDF" target="_blank">PDF of detection limits for this dataset</a>.</p>
<p>Quality flag definitions:<br />
BDL = below detection limit.<br />
0 = No QC performed.<br />
1 = Good data.<br />
2 = Probably good data.<br />
3 = Probably bad data that is potentially correctable.<br />
4 = Bad data.<br />
5 = Value changed.<br />
6 = Sample &lt; blank.<br />
8 = Interpolated value.<br />
9 = Missing value.</p>
<p>BCO-DMO made the following modifications:<br />
- Replaced blanks with 'nd'.<br />
- Replaced ' &lt; DL'&nbsp; with 'below_DL'. Replaced '&lt; blank' with 'lt_blank'.<br />
- Changed PI-supplied cruise IDs of KN204-2 and KN204-5 to KN204-01A and KN204-01B. Added 'cruise_part' column to distingush between parts A and B of cruise KN204-01.<br />
- Copied averages and variances to all&nbsp; rows containing data for that sample (where applicable).</p>
<p><strong>Additional GEOTRACES Processing:</strong>&nbsp; After the data were submitted to the International Data Management Office, BODC, the office noticed that important identifying information was missing in many datasets. With the agreement of BODC and the US GEOTRACES lead PIs, BCO-DMO added standard US GEOTRACES information, such as the US GEOTRACES event number, to each submitted dataset lacking this information. To accomplish this, BCO-DMO compiled a 'master' dataset composed of the following parameters: station_GEOTRC, cast_GEOTRC (bottle and pump data only), event_GEOTRC, sample_GEOTRC, sample_bottle_GEOTRC (bottle data only), bottle_GEOTRC (bottle data only), depth_GEOTRC_CTD (bottle data only), depth_GEOTRC_CTD_rounded (bottle data only), BTL_ISO_DateTime_UTC (bottle data only), and GeoFish_id (GeoFish data only). This added information will facilitate subsequent analysis and inter comparison of the datasets.</p>
<p>Bottle parameters in the master file were taken from the GT-C_Bottle_GT10, GT-C_Bottle_GT11, ODF_Bottle_GT10, and ODF_Bottle_GT11 datasets. Non-bottle parameters, including those from GeoFish tows, Aerosol sampling, and McLane Pumps, were taken from the Event_Log_GT10 and Event_Log_GT11 datasets. McLane pump cast numbers missing in event logs were taken from the Particulate Th-234 dataset submitted by Ken Buesseler.</p>
<p>A standardized BCO-DMO method (called “join”) was then used to merge the missing parameters to each US GEOTRACES dataset, most often by matching on sample_GEOTRC or on some unique combination of other parameters.</p>
<p>If the master parameters were included in the original data file and the values did not differ from the master file, the original data columns were retained and the name of the parameters were changed from the PI-submitted names to the standardized master names. If there were differences between the PI-supplied parameter values and those in the master file, both columns were retained. If the original data submission included all of the master parameters, no additional columns were added, but parameter names were modified to match the naming conventions of the master file.</p>
<p>See the dataset parameters documentation for a description of which parameters were supplied by the PI and which were added via the join method.</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Aerosol Sampler
Aerosol Sampler
PI Supplied Instrument Name: Aerosol Sampler PI Supplied Instrument Description:Two high-volume Tisch Environmental (model 5170-VBL) aerosol samplers were used. Instrument Name: Aerosol Sampler Instrument Short Name: Instrument Description: A device that collects a sample of aerosol (dry particles or liquid droplets) from the atmosphere. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/13/
Anemometer
Anemometer
PI Supplied Instrument Name: Anemometer Instrument Name: Anemometer Instrument Short Name:Anemometer Instrument Description: An anemometer is a device for measuring the velocity or the pressure of the wind. It is commonly used to measure wind speed. Aboard research vessels, it is often mounted with other meteorological instruments and sensors. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/101/
Inductively Coupled Plasma Mass Spectrometer
Inductively Coupled Plasma Mass Spectrometer
PI Supplied Instrument Name: Inductively Coupled Plasma Mass Spectrometer PI Supplied Instrument Description:Agilent 7500CS and Thermo Element 2 inductively-coupled plasma mass spectrometers (ICP-MS) were used to determine total aerosol trace metal concentrations. Instrument Name: Inductively Coupled Plasma Mass Spectrometer Instrument Short Name:ICP Mass Spec Instrument Description: An ICP Mass Spec is an instrument that passes nebulized samples into an inductively-coupled gas plasma (8-10000 K) where they are atomized and ionized. Ions of specific mass-to-charge ratios are quantified in a quadrupole mass spectrometer. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB15/
Cruise: KN199-04
KN199-04
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
KN199-04
William J. Jenkins
Woods Hole Oceanographic Institution
http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/Cruise_Report_for_Knorr_199_Final_v3.pdf
Report describing KN199-04
Cruise: KN204-01
KN204-01
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
KN204-01
Edward A. Boyle
Massachusetts Institute of Technology
http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/STS_Prelim_GT11_Doc.pdf
Report describing KN204-01
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel