http://lod.bco-dmo.org/id/dataset/875955
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
2022-06-21
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Concentrations of deionized water-soluble aerosol major ions from bulk aerosol samples collected on Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from Sept-Oct 2018
2022-06-21
publication
2022-06-21
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2022-07-08
publication
https://doi.org/10.26008/1912/bco-dmo.875955.1
Clifton S. Buck
Skidaway Institute of Oceanography
principalInvestigator
William M. Landing
Florida State University EOAS
principalInvestigator
Christopher Marsay
Skidaway Institute of Oceanography
principalInvestigator
Devon Umstead
Skidaway Institute of Oceanography
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: Buck, C. S., Landing, W. M., Marsay, C., Umstead, D. (2022) Concentrations of deionized water-soluble aerosol major ions from bulk aerosol samples collected on Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from Sept-Oct 2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-06-21 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.875955.1 [access date]
GP15 SMLH2O Aerosol Ions Leg 1 Dataset Description: Methods and Sampling: <p>A total of 12 48-hour integrated aerosol samples were collected during Leg 1 of the US GEOTRACES Pacific Meridional Transect research cruise (GP15), which took place on the RV Revelle (cruise RR1814) during September-October 2018. The cruise track consisted of a southward transect across the North Pacific Ocean originating off of Alaska and terminating at Hawaii. See <a href="https://datadocs.bco-dmo.org/docs/305/GEOTRACES_PMT/buck_clifton/data_docs/GP15_SMLH2O_Aerosol_Ions_Leg1_Aerosol_Sample_Map.png" target="_blank">attached Supplemental File</a> of sample locations (.png).</p>
<p>Bulk aerosol samples for major ion analyses were collected using one of five Tisch Environmental high-volume (~1 m³ air min⁻¹) aerosol samplers (model 5170V-BL). For each deployment, 12 replicate 47 mm diameter Whatman 41 filters were loaded on open-face filter holders (Advantec MFS) installed on the aerosol sampler on a PVC adaptor plate (Shelley et al., 2015). Filters were acid-washed before use to reduce trace element blanks, following the procedure described by Morton et al. (2013). The samplers were deployed on the forward rail of the ship’s 03 deck approximately 16m above sea level, to minimize the influence of sea spray on samples. Samplers were controlled by wind speed and direction, through a Campbell Scientific CR800 data-logger interfaced with an anemometer and wind vane set up in close proximity to the samplers, in order to eliminate contamination from the ship’s stack exhaust. This setup was used to restrict sampling to periods when relative wind speed and direction were &gt;0.5 m s⁻¹ and from within ±60° of the bow of the ship, respectively, for at least five continuous minutes.</p>
<p>Following sampling, the filters were transfer to pre-labeled petri slides. A set of filters from each deployment were "instantaneously" leached with ultrahigh purity (&gt;18 MΩ∙cm; UHP) water according to the methods in previous studies (Buck et al., 2006; Morton et al., 2013). Other filters were transferred to petri-slides and stored frozen until trace element processing back on land. Approximately 30 mL from each leach was collected in an LDPE bottle to serve as a subsample to be analyzed for major ions. This subsample was stored frozen in a commercial freezer until analysis.</p>
<p>The concentration of the major cations and anions were analyzed by ion chromatography (IC) on a Dionex ICS-2100 instrument. The concentrations of the ions were calculated by linear regression of the system response to a series of standards of known concentration. Analytical accuracy was confirmed by regular analysis of check standards. All standards were made with ACS certified salts in UHP. Ion concentrations for each collection were normalized to pmol m-3 by dividing by the volume of air sampled.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1756103 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1756103
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1756104 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1756104
completed
Clifton S. Buck
Skidaway Institute of Oceanography
912-598-2418
Skidaway Institute of Oceanography 10 Ocean Science Circle
Savannah
GA
31411
USA
csbuck@uga.edu
pointOfContact
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
Christopher Marsay
Skidaway Institute of Oceanography
DE
USA
cmarsay@udel.edu
pointOfContact
Devon Umstead
Skidaway Institute of Oceanography
304-707-1306
xdevo14@gmail.com
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Cruise_id
GEOTRC_EVENTNO
GEOTRC_SAMPNO
Aerosol_deployment_number
Start_ISO_DateTime_UTC
Julian_Day
Start_Lat
Start_Long
End_ISO_DateTime_UTC
End_Lat
End_Long
Air_Vol_Total
Na_A_SMLH2O_CONC_HIVOL_xug0hs
SD1_Na_A_SMLH2O_CONC_HIVOL_xug0hs
Flag_Na_A_SMLH2O_CONC_HIVOL_xug0hs
Mg_A_SMLH2O_CONC_HIVOL_jp5vib
SD1_Mg_A_SMLH2O_CONC_HIVOL_jp5vib
Flag_Mg_A_SMLH2O_CONC_HIVOL_jp5vib
K_A_SMLH2O_CONC_HIVOL_rvayjm
SD1_K_A_SMLH2O_CONC_HIVOL_rvayjm
Flag_K_A_SMLH2O_CONC_HIVOL_rvayjm
Ca_A_SMLH2O_CONC_HIVOL_ee0sfi
SD1_Ca_A_SMLH2O_CONC_HIVOL_ee0sfi
Flag_Ca_A_SMLH2O_CONC_HIVOL_ee0sfi
Cl_A_SMLH2O_CONC_HIVOL_dimboe
SD1_Cl_A_SMLH2O_CONC_HIVOL_dimboe
Flag_Cl_A_SMLH2O_CONC_HIVOL_dimboe
SO4_A_SMLH2O_CONC_HIVOL_qi3kyv
SD1_SO4_A_SMLH2O_CONC_HIVOL_qi3kyv
Flag_SO4_A_SMLH2O_CONC_HIVOL_qi3kyv
NO3_A_SMLH2O_CONC_HIVOL_twuzpl
SD1_NO3_A_SMLH2O_CONC_HIVOL_twuzpl
Flag_NO3_A_SMLH2O_CONC_HIVOL_twuzpl
Tisch Environmental high-volume (~1 m3 air min-1) aerosol samplers (model 5170V-BL)
anemometer
Campbell Scientific CR800 data-logger
Dionex ICS-2100 ion chromatography system
theme
None, User defined
Cruise identfier
event
sample identification
deployment number
ISO_DateTime_UTC
Julian day as a decimal (time elapsed in days from 00:00 on January 1st 4713 BC)
latitude
longitude
sample_volume
Sodium
quality flag
Magnesium
potassium
Calcium
chlorine
sulfate
Nitrate
featureType
BCO-DMO Standard Parameters
Aerosol Sampler
Anemometer
Data Logger
Ion Chromatograph
instrument
BCO-DMO Standard Instruments
RR1814
service
Deployment Activity
Seattle, WA to Hilo, HI
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
US GEOTRACES Pacific Meridional Transect (GP15)
http://www.geotraces.org/
US GEOTRACES Pacific Meridional Transect (GP15)
<p>A 60-day research cruise took place in 2018 along a transect form Alaska to Tahiti at 152° W. A description of the project titled "<em>Collaborative Research: Management and implementation of the US GEOTRACES Pacific Meridional Transect</em>", funded by NSF, is below. Further project information is available on the <a href="https://www.geotraces.org/" target="_blank">US GEOTRACES website</a> and on the <a href="https://geotraces-gp15.com/" target="_blank">cruise blog</a>. A detailed <a href="https://datadocs.bco-dmo.org/docs/geotraces/GEOTRACES_PMT/casciotti/data_docs/GP15_Cruise_Report_with_ODF_Report.pdf" target="_blank">cruise report is also available</a> as a PDF.</p>
<p><em>Description from NSF award abstract:</em><br />
GEOTRACES is a global effort in the field of Chemical Oceanography in which the United States plays a major role. The goal of the GEOTRACES program is to understand the distributions of many elements and their isotopes in the ocean. Until quite recently, these elements could not be measured at a global scale. Understanding the distributions of these elements and isotopes will increase the understanding of processes that shape their distributions and also the processes that depend on these elements. For example, many "trace elements" (elements that are present in very low amounts) are also important for life, and their presence or absence can play a vital role in the population of marine ecosystems. This project will launch the next major U.S. GEOTRACES expedition in the Pacific Ocean between Alaska and Tahiti. The award made here would support all of the major infrastructure for this expedition, including the research vessel, the sampling equipment, and some of the core oceanographic measurements. This project will also support the personnel needed to lead the expedition and collect the samples.</p>
<p>This project would support the essential sampling operations and infrastructure for the U.S. GEOTRACES Pacific Meridional Transect along 152° W to support a large variety of individual science projects on trace element and isotope (TEI) biogeochemistry that will follow. Thus, the major objectives of this management proposal are: (1) plan and coordinate a 60 day research cruise in 2018; (2) obtain representative samples for a wide variety of TEIs using a conventional CTD/rosette, GEOTRACES Trace Element Sampling Systems, and in situ pumps; (3) acquire conventional CTD hydrographic data along with discrete samples for salinity, dissolved oxygen, algal pigments, and dissolved nutrients at micro- and nanomolar levels; (4) ensure that proper QA/QC protocols are followed and reported, as well as fulfilling all GEOTRACES intercalibration protocols; (5) prepare and deliver all hydrographic data to the GEOTRACES Data Assembly Centre (via the US BCO-DMO data center); and (6) coordinate all cruise communications between investigators, including preparation of a hydrographic report/publication. This project would also provide baseline measurements of TEIs in the Clarion-Clipperton fracture zone (~7.5°N-17°N, ~155°W-115°W) where large-scale deep sea mining is planned. Environmental impact assessments are underway in partnership with the mining industry, but the effect of mining activities on TEIs in the water column is one that could be uniquely assessed by the GEOTRACES community. In support of efforts to communicate the science to a wide audience the investigators will recruit an early career freelance science journalist with interests in marine science and oceanography to participate on the cruise and do public outreach, photography and/or videography, and social media from the ship, as well as to submit articles about the research to national media. The project would also support several graduate students.</p>
U.S. GEOTRACES PMT
largerWorkCitation
project
Collaborative Research: US GEOTRACES PMT: Quantification of Atmospheric Deposition and Trace Element Fractional Solubility
https://osprey.bco-dmo.org/project/833916
Collaborative Research: US GEOTRACES PMT: Quantification of Atmospheric Deposition and Trace Element Fractional Solubility
<p><em>NSF Award Abstract:</em><br />
The goal of the international GEOTRACES program is to understand the distributions of trace chemical elements and their isotopes in the oceans. An essential part of this effort is determining the sources of trace elements to the oceans, one of which is from the atmosphere: dust falling from the air, and rain, both deliver elements to the sea surface. This project would collect and analyze samples of rainwater and of particles from the atmosphere, along a U.S. GEOTRACES expedition from Alaska to Tahiti in the fall of 2018. The timing of the expedition corresponds to the part of the year with the highest atmospheric dust concentrations in the Gulf of Alaska and may also capture the tail end of peak fire season in Asia. In contrast, the southern end of the proposed ship track is known to have very low atmospheric dust. Aerosols will be influenced by human activity in Asia as well. The anticipated differences in atmospheric deposition along the ship track will allow the assessment of the role of this process on trace element and isotope cycling. The project will support a postdoctoral investigator. The relevance of ocean-atmosphere studies to the public will be communicated at campus open house events and in online forums in collaboration with the GEOTRACES management team.</p>
<p>In alignment with the mission of GEOTRACES, the proposed research will address the following biogeochemical and oceanographic questions: 1) What is the magnitude of atmospheric aerosol deposition (wet and dry) to the surface of the Pacific Ocean? 2) What is the chemical composition of these aerosols and how does composition vary based on source (e.g. Alaskan glacial flour, Asian mineral dust, emissions from biomass burning, anthropogenic emissions)? 3) What is the fractional solubility of trace elements in Pacific aerosols and does solubility vary based on aerosol source? 4) What is the potential bioavailability of soluble aerosol Fe? 5) How is the soluble fraction of aerosol trace elements distributed across operationally defined size classes? 6) How does atmospheric deposition impact distributions of other GEOTRACES parameters? Atmospheric aerosol and precipitation samples will be collected over the 70-day expedition and the investigators will provide sub-samples to collaborators and other interested scientists. These samples will be analyzed for a suite of key trace elements from bulk and size-fractionated aerosol samples, aerosol leachates, and rain samples. A sequential extraction scheme designed to solubilize aerosol Fe as a function of its FeOx morphology and particle size will be used on selected samples because an understanding of aerosol trace element fractional solubility is fundamental to future work to assess the bioavailability of aerosol derived trace elements. The proposed work will provide data that directly contribute to the GEOTRACES objectives related to atmospheric deposition and will help to address temporal variability as this cruise section follows the CLIVAR/Repeat Hydrography P16N line.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
PMT Aerosol Collection
largerWorkCitation
project
eng; USA
oceans
Seattle, WA to Hilo, HI
-156.3461
-129.0395
22
55.5948
2018-09-20
2018-10-20
From projects that focused on the following 2 locations: 1. Pacific Meridional Transect along 152W (GP15) 2. Pacific Ocean along 152 W
0
BCO-DMO catalogue of parameters from Concentrations of deionized water-soluble aerosol major ions from bulk aerosol samples collected on Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from Sept-Oct 2018
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/876036.rdf
Name: Cruise_id
Units: unitless
Description: <p>Cruise identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/876037.rdf
Name: GEOTRC_EVENTNO
Units: unitless
Description: <p>GEOTRACES Event Number</p>
http://lod.bco-dmo.org/id/dataset-parameter/876038.rdf
Name: GEOTRC_SAMPNO
Units: unitless
Description: <p>GEOTRACES Sample Number</p>
http://lod.bco-dmo.org/id/dataset-parameter/876039.rdf
Name: Aerosol_deployment_number
Units: unitless
Description: <p>Aerosols-specific sample number (see included <a href="https://datadocs.bco-dmo.org/docs/305/GEOTRACES_PMT/buck_clifton/data_docs/GP15_SMLH2O_Aerosol_Ions_Leg1_Aerosol_Sample_Map.png" target="_blank">map</a>)</p>
http://lod.bco-dmo.org/id/dataset-parameter/876040.rdf
Name: Start_ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time (UTC) at start of sample collection; formatted to ISO8601 standard: YYYY-MM-DDThh:mmZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/876041.rdf
Name: Julian_Day
Units: unitless
Description: <p>Sampling start Julian day</p>
http://lod.bco-dmo.org/id/dataset-parameter/876042.rdf
Name: Start_Lat
Units: degrees North
Description: <p>Latitude at start of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/876043.rdf
Name: Start_Long
Units: degrees East
Description: <p>Longitude at start of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/876044.rdf
Name: End_ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time (UTC) at end of sample collection; formatted to ISO8601 standard: YYYY-MM-DDThh:mmZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/876045.rdf
Name: End_Lat
Units: degrees North
Description: <p>Latitude at end of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/876046.rdf
Name: End_Long
Units: degrees East
Description: <p>Longitude at end of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/876047.rdf
Name: Air_Vol_Total
Units: cubic meters (m^3)
Description: <p>Total volume of air sampled per filter</p>
http://lod.bco-dmo.org/id/dataset-parameter/876048.rdf
Name: Na_A_SMLH2O_CONC_HIVOL_xug0hs
Units: picomoles per cubic meter (pmol/m^3)
Description: <p>Deionized water soluble aerosol Na concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/876049.rdf
Name: SD1_Na_A_SMLH2O_CONC_HIVOL_xug0hs
Units: unitless
Description: <p>Relative standard deviation of Na_A_SMLH2O_CONC_HIVOL_xug0hs</p>
http://lod.bco-dmo.org/id/dataset-parameter/876050.rdf
Name: Flag_Na_A_SMLH2O_CONC_HIVOL_xug0hs
Units: unitless
Description: <p>Quality flag for Na_A_SMLH2O_CONC_HIVOL_xug0hs</p>
http://lod.bco-dmo.org/id/dataset-parameter/876051.rdf
Name: Mg_A_SMLH2O_CONC_HIVOL_jp5vib
Units: picomoles per cubic meter (pmol/m^3)
Description: <p>Deionized water soluble aerosol Mg concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/876052.rdf
Name: SD1_Mg_A_SMLH2O_CONC_HIVOL_jp5vib
Units: unitless
Description: <p>Relative standard deviation of Mg_A_SMLH2O_CONC_HIVOL_jp5vib</p>
http://lod.bco-dmo.org/id/dataset-parameter/876053.rdf
Name: Flag_Mg_A_SMLH2O_CONC_HIVOL_jp5vib
Units: unitless
Description: <p>Quality flag for Mg_A_SMLH2O_CONC_HIVOL_jp5vib</p>
http://lod.bco-dmo.org/id/dataset-parameter/876054.rdf
Name: K_A_SMLH2O_CONC_HIVOL_rvayjm
Units: picomoles per cubic meter (pmol/m^3)
Description: <p>Deionized water soluble aerosol K concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/876055.rdf
Name: SD1_K_A_SMLH2O_CONC_HIVOL_rvayjm
Units: unitless
Description: <p>Relative standard deviation of K_A_SMLH2O_CONC_HIVOL_rvayjm</p>
http://lod.bco-dmo.org/id/dataset-parameter/876056.rdf
Name: Flag_K_A_SMLH2O_CONC_HIVOL_rvayjm
Units: unitless
Description: <p>Quality flag for K_A_SMLH2O_CONC_HIVOL_rvayjm</p>
http://lod.bco-dmo.org/id/dataset-parameter/876057.rdf
Name: Ca_A_SMLH2O_CONC_HIVOL_ee0sfi
Units: picomoles per cubic meter (pmol/m^3)
Description: <p>Deionized water soluble aerosol Ca concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/876058.rdf
Name: SD1_Ca_A_SMLH2O_CONC_HIVOL_ee0sfi
Units: unitless
Description: <p>Relative standard deviation of Ca_A_SMLH2O_CONC_HIVOL_ee0sfi</p>
http://lod.bco-dmo.org/id/dataset-parameter/876059.rdf
Name: Flag_Ca_A_SMLH2O_CONC_HIVOL_ee0sfi
Units: unitless
Description: <p>Quality flag for Ca_A_SMLH2O_CONC_HIVOL_ee0sfi</p>
http://lod.bco-dmo.org/id/dataset-parameter/876060.rdf
Name: Cl_A_SMLH2O_CONC_HIVOL_dimboe
Units: picomoles per cubic meter (pmol/m^3)
Description: <p>Deionized water soluble aerosol Cl concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/876061.rdf
Name: SD1_Cl_A_SMLH2O_CONC_HIVOL_dimboe
Units: unitless
Description: <p>Relative standard deviation of Cl_A_SMLH2O_CONC_HIVOL_dimboe</p>
http://lod.bco-dmo.org/id/dataset-parameter/876062.rdf
Name: Flag_Cl_A_SMLH2O_CONC_HIVOL_dimboe
Units: unitless
Description: <p>Quality flag for Cl_A_SMLH2O_CONC_HIVOL_dimboe</p>
http://lod.bco-dmo.org/id/dataset-parameter/876063.rdf
Name: SO4_A_SMLH2O_CONC_HIVOL_qi3kyv
Units: picomoles per cubic meter (pmol/m^3)
Description: <p>Deionized water soluble aerosol SO4 concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/876064.rdf
Name: SD1_SO4_A_SMLH2O_CONC_HIVOL_qi3kyv
Units: unitless
Description: <p>Relative standard deviation of SO4_A_SMLH2O_CONC_HIVOL_qi3kyv</p>
http://lod.bco-dmo.org/id/dataset-parameter/876065.rdf
Name: Flag_SO4_A_SMLH2O_CONC_HIVOL_qi3kyv
Units: unitless
Description: <p>Quality flag for SO4_A_SMLH2O_CONC_HIVOL_qi3kyv</p>
http://lod.bco-dmo.org/id/dataset-parameter/876066.rdf
Name: NO3_A_SMLH2O_CONC_HIVOL_twuzpl
Units: picomoles per cubic meter (pmol/m^3)
Description: <p>Deionized water soluble aerosol NO3 concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/876067.rdf
Name: SD1_NO3_A_SMLH2O_CONC_HIVOL_twuzpl
Units: unitless
Description: <p>Relative standard deviation of NO3_A_SMLH2O_CONC_HIVOL_twuzpl</p>
http://lod.bco-dmo.org/id/dataset-parameter/876068.rdf
Name: Flag_NO3_A_SMLH2O_CONC_HIVOL_twuzpl
Units: unitless
Description: <p>Quality flag for NO3_A_SMLH2O_CONC_HIVOL_twuzpl</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
2981
https://darchive.mblwhoilibrary.org/bitstream/1912/29109/1/dataset-875955_gp15-smlh2o-aerosol-ions-leg-1__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.875955.1
download
onLine
dataset
<p>A total of 12 48-hour integrated aerosol samples were collected during Leg 1 of the US GEOTRACES Pacific Meridional Transect research cruise (GP15), which took place on the RV Revelle (cruise RR1814) during September-October 2018. The cruise track consisted of a southward transect across the North Pacific Ocean originating off of Alaska and terminating at Hawaii. See <a href="https://datadocs.bco-dmo.org/docs/305/GEOTRACES_PMT/buck_clifton/data_docs/GP15_SMLH2O_Aerosol_Ions_Leg1_Aerosol_Sample_Map.png" target="_blank">attached Supplemental File</a> of sample locations (.png).</p>
<p>Bulk aerosol samples for major ion analyses were collected using one of five Tisch Environmental high-volume (~1 m³ air min⁻¹) aerosol samplers (model 5170V-BL). For each deployment, 12 replicate 47 mm diameter Whatman 41 filters were loaded on open-face filter holders (Advantec MFS) installed on the aerosol sampler on a PVC adaptor plate (Shelley et al., 2015). Filters were acid-washed before use to reduce trace element blanks, following the procedure described by Morton et al. (2013). The samplers were deployed on the forward rail of the ship’s 03 deck approximately 16m above sea level, to minimize the influence of sea spray on samples. Samplers were controlled by wind speed and direction, through a Campbell Scientific CR800 data-logger interfaced with an anemometer and wind vane set up in close proximity to the samplers, in order to eliminate contamination from the ship’s stack exhaust. This setup was used to restrict sampling to periods when relative wind speed and direction were &gt;0.5 m s⁻¹ and from within ±60° of the bow of the ship, respectively, for at least five continuous minutes.</p>
<p>Following sampling, the filters were transfer to pre-labeled petri slides. A set of filters from each deployment were "instantaneously" leached with ultrahigh purity (&gt;18 MΩ∙cm; UHP) water according to the methods in previous studies (Buck et al., 2006; Morton et al., 2013). Other filters were transferred to petri-slides and stored frozen until trace element processing back on land. Approximately 30 mL from each leach was collected in an LDPE bottle to serve as a subsample to be analyzed for major ions. This subsample was stored frozen in a commercial freezer until analysis.</p>
<p>The concentration of the major cations and anions were analyzed by ion chromatography (IC) on a Dionex ICS-2100 instrument. The concentrations of the ions were calculated by linear regression of the system response to a series of standards of known concentration. Analytical accuracy was confirmed by regular analysis of check standards. All standards were made with ACS certified salts in UHP. Ion concentrations for each collection were normalized to pmol m-3 by dividing by the volume of air sampled.</p>
Specified by the Principal Investigator(s)
<p><strong>Data Processing:</strong><br />
Filter blanks were processed in the same way as samples but were below method detection limits. Reported soluble aerosol major ion concentrations values have been normalized to the volume of air filtered during sample collection. Each sample collection period produced 36 replicate filters. Three of those filters were leached with ultrapure deionized water (DI water) and a subsample from one of these for each deployment was analyzed for major ion concentrations. To assess measurement precision, a subset of samples were analyzed multiple times, from which a relative standard deviation was determined for each major ion species. The standard deviations in the datasheet represent application of these RSDs to all samples. Detection limits are defined as three times the standard deviation from replicate analyses of low concentration samples. Data are marked as described in the datasheet.</p>
<p><strong>Known Problems/Issues:</strong><br />
AEROS2 (Event 6546) was not analyzed due to exceptional contamination of the collection filters with sea spray.<br />
The K+ data were frequently below method detection limit.</p>
<p><strong>Quality Flags:</strong><br />
Quality flags have been applied with the following definitions:<br />
0 = No quality control;<br />
1 = Good value;<br />
2 = Probably good value;<br />
3 = Probably bad value;<br />
4 = Bad value;<br />
5 = Value changed;<br />
6 = Value Below Detection;<br />
7 = Value in excess;<br />
8 = Interpolated value;<br />
9 = Missing value.</p>
<p><strong>Detection Limits:</strong><br />
Detection limit used is 3xSD of triplicate analyses of the lowest measurable sample. All filter blanks were below detection limit for all major ions. Reported detection limits were not normalized by air volume and sample data were evaluated relative to the method detection limit prior to the normalization step in data processing. Data below the detection limit are flagged with code 6 and no value reported ("nd"). Detection limits are reported in the <a href="https://datadocs.bco-dmo.org/docs/305/GEOTRACES_PMT/buck_clifton/data_docs/GP15_SMLH2O_Aerosol_Ions_Leg1_Detection_Limits.pdf" target="_blank">attached Supplemental File</a> (PDF).</p>
<p><strong>Note on Standard Deviations:</strong><br />
Only one major ion sample generated per aerosol deployment. A handful of samples were analyzed multiple times, from which a relative standard deviation (%) for each chemical species was determined and this was applied to all values.</p>
<p><strong>BCO-DMO Processing:</strong><br />
- renamed fields;<br />
- added date/time fields in ISO8601 format and removed original day, month, year, and time columns.</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
Tisch Environmental high-volume (~1 m3 air min-1) aerosol samplers (model 5170V-BL)
Tisch Environmental high-volume (~1 m3 air min-1) aerosol samplers (model 5170V-BL)
PI Supplied Instrument Name: Tisch Environmental high-volume (~1 m3 air min-1) aerosol samplers (model 5170V-BL) 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/
Campbell Scientific CR800 data-logger
Campbell Scientific CR800 data-logger
PI Supplied Instrument Name: Campbell Scientific CR800 data-logger Instrument Name: Data Logger Instrument Short Name: Instrument Description: Electronic devices that record data over time or in relation to location either with a built-in instrument or sensor or via external instruments and sensors.
Dionex ICS-2100 ion chromatography system
Dionex ICS-2100 ion chromatography system
PI Supplied Instrument Name: Dionex ICS-2100 ion chromatography system Instrument Name: Ion Chromatograph Instrument Short Name:Ion Chromatograph Instrument Description: Ion chromatography is a form of liquid chromatography that measures concentrations of ionic species by separating them based on their interaction with a resin. Ionic species separate differently depending on species type and size. Ion chromatographs are able to measure concentrations of major anions, such as fluoride, chloride, nitrate, nitrite, and sulfate, as well as major cations such as lithium, sodium, ammonium, potassium, calcium, and magnesium in the parts-per-billion (ppb) range. (from http://serc.carleton.edu/microbelife/research_methods/biogeochemical/ic.html)
Cruise: RR1814
RR1814
R/V Roger Revelle
Community Standard Description
International Council for the Exploration of the Sea
R/V Roger Revelle
vessel
RR1814
Gregory A. Cutter
Old Dominion University
https://datadocs.bco-dmo.org/docs/geotraces/GEOTRACES_PMT/casciotti/data_docs/GP15_Cruise_Report_with_ODF_Report.pdf
Report describing RR1814
R/V Roger Revelle
Community Standard Description
International Council for the Exploration of the Sea
R/V Roger Revelle
vessel