http://lod.bco-dmo.org/id/dataset/653330
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
2016-08-08
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
P17N Ocean Acidification Pteropod Study: Carbonate chemistry system and hydrography samples from R/V New Horizon NH1208 from a transect 35-50 degrees North, Pacific Ocean, Aug-Sep 2012 (OAPS project)
2016-08-09
publication
2016-08-09
revision
BCO-DMO Linked Data URI
2016-08-09
creation
http://lod.bco-dmo.org/id/dataset/653330
Zhaohui Aleck Wang
Woods Hole Oceanographic Institution
principalInvestigator
Andone C. Lavery
Woods Hole Oceanographic Institution
principalInvestigator
Gareth Lawson
Woods Hole Oceanographic Institution
principalInvestigator
Peter H. Wiebe
Woods Hole Oceanographic Institution
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: Wang, Z., Wiebe, P. H., Lawson, G., Lavery, A. C. (2016) P17N Ocean Acidification Pteropod Study: Carbonate chemistry system and hydrography samples from R/V New Horizon NH1208 from a transect 35-50 degrees North, Pacific Ocean, Aug-Sep 2012 (OAPS project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). Version Date 2016-08-09 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/653330 [access date]
P17N Ocean Acidification Pteropod Study: Carbonate chemistry system (silicate, total alkalinity, total dissolved inorganic carbon, pH, oxygen) and hydrography samples Dataset Description: <p>CTD and Niskin sample&nbsp;measurements include silicate, total alkalinity, total dissolved inorganic carbon, pH, and oxygen.</p>
<p>These data are published in: Chu, S. N., Z. Aleck Wang, S. C. Doney, G. L. Lawson, and K. A. Hoering (2016), Changes in anthropogenic carbon storage in the Northeast Pacific in the last decade, J. Geophys. Res. Oceans,121, doi:10.1002/2016JC011775.</p> Methods and Sampling: <p>Conductivity-Temperature-Depth sensor (CTD, Seabird SBE 911plus) and a SBE43 dissolved oxygen (DO) sensor was used to collect discrete seawater samples for analysis of total dissolved inorganic carbon (DIC), total alkalinity (TA), pH, DO, nutrients (nitrate, phosphate, and silicate), and salinity. Seawater samples were collected for pH, DIC, TA, and nutrients at all 34 stations for all sampling depths. Salinity and DO samples were collected at all stations at every third depth for calibrations of the conductivity and DO sensors on the CTD Rosette. Samples for DO were collected first from the Niskin bottles, followed by pH, DIC/TA (in the same bottle), nutrients, and salinity. Standard protocols were followed for sampling procedures [Dickson et al., 2007]. DIC and TA samples were collected into 250 ml Pyrex borosilicate bottles after being filtered with a 0.45 µm in-line capsule filter (Farrwest Environmental Supply, Texas). Each sample was poisoned with 100 µL of a saturated mercuric chloride solution for preservation [Dickson et al., 2007] and sealed with a ground-glass stopper coated with APIEZON®-L grease and was secured with a rubber band applied to the bottle top.</p>
<p>Dissolved oxygen (DO) samples were collected from CTD Niskin bottles into 150 mL brown glass tincture bottles. Sodium iodide-sodium hydroxide mixture and manganese chloride were added sequentially to the sample immediately after collection and mixed thoroughly. One mL of sulfuric acid was added and mixed into the sample prior to measurement. DO samples were measured after temperature equilibration, within 3 days, on an automated dissolved oxygen titrator developed at Woods Hole Oceanographic Institution [Knapp et al. 1990]. The system is based on the Winkler technique. This method has an accuracy of 1.0 µmol kg-1 and precision of 0.2 µmol kg-1. The titrator was standardized with sodium thiosulfate for each group of analyses, usually about 30 samples. A custom procedure was developed and implemented to detect concentrations of dissolved oxygen &lt; 90 µmol kg-1. In situ temperature was used to calculate potential density in order to convert from mL L-1 to µmol kg-1 for bottle samples. Ideally, the conversion temperature should be the temperature measured at the time of sample drawing, but those were not measured. Bottle values were used to calibrate CTD values.</p>
<p>Salinity samples were collected into 250 mL square cross-sectioned, borosilicate glass bottles and measured on an Autosal Salinometer (Guildline 8400B). PSS-78 salinity was calculated from measured conductivity ratios. Measurements were performed after samples had equilibrated to laboratory temperature, within 3 days after collection. The machine was standardized for each group of analyses, approximately 50 samples. International Association for the Physical Sciences of the Oceans (IAPSO) Standard Seawater Batch P-152 was used for standardization. This method has an accuracy of ±0.003 and precision of ± 0.0002. Bottle analyses were used to calibrate CTD salinity values.</p>
<p>DIC was analyzed using an Apollo SciTech DIC auto-analyzer (Model AS-C3), which uses a nondispersive infrared (NDIR) method. The sample is acidified with a 10% phosphoric acid in 10% sodium chloride solution, and CO2 is purged with high purity nitrogen gas and measured by a LI-COR 7000 infrared analyzer. Certified Reference Material (CRM) from Dr. A. Dickson at Scripps Institution of Oceanography was used to calibrate the DIC auto-analyzer at least once daily. In addition, CRM was measured as a sample every few hours to gauge and correct any potential drift. The precision and accuracy of the instrument was ~ ±2.0 µmol kg-1.</p>
<p>TA was measured with an Apollo SciTech alkalinity auto-titrator (Model AS-ALK2), a Ross combination pH electrode and a pH meter (ORION 3 Star) to perform a modified Gran titration [Wang and Cai, 2004]. The electrode and concentration of hydrochloric acid was calibrated every day. The CRMs were also measured as samples every few hours to correct any potential small drift. The accuracy and precision of the instrument was about ± 2.0 µmol kg-1.&nbsp;</p>
<p>Seawater pH samples were collected directly into 10 cm cylindrical optical cells via silicone tubing and thermostated to 25.0 ± 0.1°C for at least an hour before measurement. Samples were analyzed using an Agilent 8453 UV-VIS spectrophotometer and meta-cresol purple (m-CP) as the indicator [Dickson et al., 2007]. Sample pH was measured on the total scale. Measurements of pH were corrected for indicator perturbation and indicator impurity [Clayton and Byrne, 1993; Dickson et al., 2007; Liu et al., 2011; Yao et al., 2007]. The average of combined corrections was 0.0026 ± 0.0046. The instrument accuracy and precision was 0.002 and 0.001, respectively.&nbsp;<br />
The nutrient samples were filtered through 0.2 µm filters, collected into vials that had been cleaned with 10% hydrochloric acid and were immediately frozen after collection. Samples were analyzed at the University of California at Santa Barbara Marine Science Institute. Nutrient data from NH1208 were found to have relatively larger scatter than the previous P17N cruise data. This may be due to storage issues that involved freezing and possible melting of samples.&nbsp;</p>
<p>PACIFICA recommended adjustments for CLIVAR P17N 2001 are shown below along with deep isopycnal crossover results for NH1208 2012 cruise adjusted to the CLIVAR 2001 PACIFICA-corrected data. These values are listed in the data file as ‘deepcorr’ values. Salinity, DIC, and TA factors are additive, while oxygen and silicate factors are multiplicative. Units for all parameters are in µmol kg-1 except for salinity, which is measured on the practical salinity scale.</p>
<table border="1" cellpadding="0" cellspacing="0" style="line-height:1.6; width:384px">
<tbody>
<tr>
<td style="height:35px; width:66px">
<p>&nbsp;</p>
<p>&nbsp;</p>
</td>
<td style="height:35px; width:78px">
<p>SALINITY</p>
</td>
<td style="height:35px; width:74px">
<p>OXYGEN</p>
</td>
<td style="height:35px; width:78px">
<p>SILICATE</p>
</td>
<td style="height:35px; width:42px">
<p>DIC</p>
</td>
<td style="height:35px; width:46px">
<p>TA</p>
</td>
</tr>
<tr>
<td style="height:34px; width:66px">
<p>CLIVAR 2001</p>
</td>
<td style="height:34px; width:78px">
<p>0</p>
</td>
<td style="height:34px; width:74px">
<p>1</p>
</td>
<td style="height:34px; width:78px">
<p>1.048</p>
</td>
<td style="height:34px; width:42px">
<p>-4</p>
</td>
<td style="height:34px; width:46px">
<p>8</p>
</td>
</tr>
<tr>
<td style="height:14px; width:66px">
<p>NH1208 2012</p>
</td>
<td style="height:14px; width:78px">
<p>0</p>
</td>
<td style="height:14px; width:74px">
<p>0.955</p>
</td>
<td style="height:14px; width:78px">
<p>1.032</p>
</td>
<td style="height:14px; width:42px">
<p>11</p>
</td>
<td style="height:14px; width:46px">
<p>10</p>
</td>
</tr>
</tbody>
</table>
<p>&nbsp;</p>
<p><strong>Cited References:</strong><br />
Clayton, T. D., and R. H. Byrne (1993), Spectrophotometric seawater pH measurements: total hydrogen ion concentration scale calibration of m-cresol purple and at-sea results, Deep. Res., 40(10), 2115-2129, doi:10.1016/0967-0637(93)90048-8.<br />
Dickson, A., C. Sabine, and J. Christian (2007), Guide to best practices for ocean CO2 measurement, PICES Spec. Publ.,191.<br />
Knapp, George P., Marvel C. Stalcup, and Robert J. Stanley (1990), Automated oxygen titration and salinity determination. Woods Hole Oceanographic Institution.<br />
Liu, X., M. C. Patsavas, and R. H. Byrne (2011), Purification and characterization of meta-cresol purple for spectrophotometric seawater ph measurements, Environ. Sci. Technol., 45(11), 4862-4868, doi:10.1021/es200665d.<br />
Wang, Z. A., and W.-J. Cai (2004), Carbon dioxide degassing and inorganic carbon export from a marsh-dominated estuary (the Duplin River): A marsh CO2 pump, Limnol. Oceanogr., 49(2), 341-354, doi:10.4319/lo.2004.49.2.0341.<br />
Yao, W., X. Liu, and R. H. Byrne (2007), Impurities in indicators used for spectrophotometric seawater pH measurements: Assessment and remedies, Mar. Chem., 107(2), 167-172, doi:10.1016/j.marchem.2007.06.012.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1041068 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1041068
completed
Zhaohui Aleck Wang
Woods Hole Oceanographic Institution
508-289-3676
Marine Chemistry and Geochemistry MS #8
Woods Hole
MA
02543
USA
zawang@whoi.edu
pointOfContact
Andone C. Lavery
Woods Hole Oceanographic Institution
508 289 2345
Bigelow 211 MS 11
Woods Hole
MA
02543
USA
alavery@whoi.edu
pointOfContact
Gareth Lawson
Woods Hole Oceanographic Institution
+1 508 289 3713
Woods Hole Oceanographic Institution Redfield 1-32, MS#34
Woods Hole
MA
02543
U.S.A.
glawson@whoi.edu
pointOfContact
Peter H. Wiebe
Woods Hole Oceanographic Institution
508-289-2313
Biology Department Redfield 2-26 MS #33
Woods Hole
MA
02543-1049
USA
pwiebe@whoi.edu
pointOfContact
asNeeded
Unknown
cruise_id
station
instrument
cast
sample
bottle
bottle_FLAG_W
date
time
lat_start
lon_start
depth_w
press
press_flag
temp
temp_flag
sal
sal_flag
SiO4
SiO4_flag
TALK
TALK_flag
DIC
DIC_flag
pH
pH_flag
pH_temp
pH_temp_flag
O2
O2_flag
DIC_deepcorr
DIC_deepcorr_flag
O2_deepcorr
O2_deepcorr_flag
SiO4_deepcorr
SiO4_deepcorr_flag
TALK_deepcorr
TALK_deepcorr_flag
theme
None, User defined
Cruise identfier
station
instrument
cast
sample identification
bottle
quality flag
date
time of day
latitude at start time of measurement
longitude at start time of measurement
depth_w
water pressure
water temperature at measurement depth
salinity
Silicate (reactive silica)
total alkalinity (TA)
dissolved inorganic Carbon
pH
dissolved Oxygen
featureType
BCO-DMO Standard Parameters
Autosal salinometer
CTD Sea-Bird 911
Elemental Analyzer
Niskin bottle
Spectrophotometer
Titrator
Winkler Oxygen Titrator
instrument
BCO-DMO Standard Instruments
NH1208
service
Deployment Activity
transect between 35 and 50N along CLIVAR line P17N
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.
Science, Engineering and Education for Sustainability NSF-Wide Investment (SEES): Ocean Acidification (formerly CRI-OA)
https://www.nsf.gov/funding/pgm_summ.jsp?pims_id=503477
Science, Engineering and Education for Sustainability NSF-Wide Investment (SEES): Ocean Acidification (formerly CRI-OA)
NSF Climate Research Investment (CRI) activities that were initiated in 2010 are now included under Science, Engineering and Education for Sustainability NSF-Wide Investment (SEES). SEES is a portfolio of activities that highlights NSF's unique role in helping society address the challenge(s) of achieving sustainability. Detailed information about the SEES program is available from NSF (https://www.nsf.gov/funding/pgm_summ.jsp?pims_id=504707).
In recognition of the need for basic research concerning the nature, extent and impact of ocean acidification on oceanic environments in the past, present and future, the goal of the SEES: OA program is to understand (a) the chemistry and physical chemistry of ocean acidification; (b) how ocean acidification interacts with processes at the organismal level; and (c) how the earth system history informs our understanding of the effects of ocean acidification on the present day and future ocean.
Solicitations issued under this program:
NSF 10-530, FY 2010-FY2011
NSF 12-500, FY 2012
NSF 12-600, FY 2013
NSF 13-586, FY 2014
NSF 13-586 was the final solicitation that will be released for this program.
PI Meetings:
1st U.S. Ocean Acidification PI Meeting(March 22-24, 2011, Woods Hole, MA)
2nd U.S. Ocean Acidification PI Meeting(Sept. 18-20, 2013, Washington, DC)
3rd U.S. Ocean Acidification PI Meeting (June 9-11, 2015, Woods Hole, MA – Tentative)
NSF media releases for the Ocean Acidification Program:
Press Release 10-186 NSF Awards Grants to Study Effects of Ocean Acidification
Discovery Blue Mussels "Hang On" Along Rocky Shores: For How Long?
Discovery nsf.gov - National Science Foundation (NSF) Discoveries - Trouble in Paradise: Ocean Acidification This Way Comes - US National Science Foundation (NSF)
Press Release 12-179 nsf.gov - National Science Foundation (NSF) News - Ocean Acidification: Finding New Answers Through National Science Foundation Research Grants - US National Science Foundation (NSF)
Press Release 13-102 World Oceans Month Brings Mixed News for Oysters
Press Release 13-108 nsf.gov - National Science Foundation (NSF) News - Natural Underwater Springs Show How Coral Reefs Respond to Ocean Acidification - US National Science Foundation (NSF)
Press Release 13-148 Ocean acidification: Making new discoveries through National Science Foundation research grants
Press Release 13-148 - Video nsf.gov - News - Video - NSF Ocean Sciences Division Director David Conover answers questions about ocean acidification. - US National Science Foundation (NSF)
Press Release 14-010 nsf.gov - National Science Foundation (NSF) News - Palau's coral reefs surprisingly resistant to ocean acidification - US National Science Foundation (NSF)
Press Release 14-116 nsf.gov - National Science Foundation (NSF) News - Ocean Acidification: NSF awards $11.4 million in new grants to study effects on marine ecosystems - US National Science Foundation (NSF)
SEES-OA
largerWorkCitation
program
Ocean Carbon and Biogeochemistry
http://us-ocb.org/
Ocean Carbon and Biogeochemistry
The Ocean Carbon and Biogeochemistry (OCB) program focuses on the ocean's role as a component of the global Earth system, bringing together research in geochemistry, ocean physics, and ecology that inform on and advance our understanding of ocean biogeochemistry. The overall program goals are to promote, plan, and coordinate collaborative, multidisciplinary research opportunities within the U.S. research community and with international partners. Important OCB-related activities currently include: the Ocean Carbon and Climate Change (OCCC) and the North American Carbon Program (NACP); U.S. contributions to IMBER, SOLAS, CARBOOCEAN; and numerous U.S. single-investigator and medium-size research projects funded by U.S. federal agencies including NASA, NOAA, and NSF.
The scientific mission of OCB is to study the evolving role of the ocean in the global carbon cycle, in the face of environmental variability and change through studies of marine biogeochemical cycles and associated ecosystems.
The overarching OCB science themes include improved understanding and prediction of: 1) oceanic uptake and release of atmospheric CO2 and other greenhouse gases and 2) environmental sensitivities of biogeochemical cycles, marine ecosystems, and interactions between the two.
The OCB Research Priorities (updated January 2012) include: ocean acidification; terrestrial/coastal carbon fluxes and exchanges; climate sensitivities of and change in ecosystem structure and associated impacts on biogeochemical cycles; mesopelagic ecological and biogeochemical interactions; benthic-pelagic feedbacks on biogeochemical cycles; ocean carbon uptake and storage; and expanding low-oxygen conditions in the coastal and open oceans.
OCB
largerWorkCitation
program
Horizontal and Vertical Distribution of Thecosome Pteropods in Relation to Carbonate Chemistry in the Northwest Atlantic and Northeast Pacific
https://osprey.bco-dmo.org/project/2154
Horizontal and Vertical Distribution of Thecosome Pteropods in Relation to Carbonate Chemistry in the Northwest Atlantic and Northeast Pacific
<p>Modified version of the NSF award abstract:<br />
The impact of ocean acidification on marine ecosystems represents a vital question facing both marine scientists and managers of ocean resources. Thecosome pteropods are a group of calcareous planktonic molluscs widely distributed in coastal and open ocean pelagic ecosystems of the world¡¦s oceans. These animals secrete an aragonite shell, and thus are highly sensitive to ocean acidification due to the water column's changing carbonate chemistry, and particularly the shoaling of the aragonite compensation depth at which seawater becomes corrosive to aragonite. In many regions, however, relatively little is known about the abundance, distribution, vertical migratory behavior, and ecological importance of pteropods. Assessing the likely ecosystem consequences of changes in pteropod dynamics resulting from ocean acidification will require a detailed understanding of pteropod distribution and abundance relative to changing aragonite saturation in the water column.</p>
<p>The primary objective of this project is to quantify the distribution, abundance, species composition, shell condition, and vertical migratory behavior of oceanic thecosome pteropods in the northwest Atlantic and northeast Pacific, and correlate these quantities to hydrography and concurrent measurements of carbonate chemistry, including vertical and horizontal distributions of aragonite saturation. In particular, the project will capitalize on present-day variability in the depth distribution of aragonite saturation levels within and between the Atlantic and Pacific Oceans as a "natural experiment" to address the hypotheses that pteropod vertical distribution, species composition, and abundance vary as the compensation depth becomes shallower. Secondary objectives are to develop acoustic protocols for the remote quantification of pteropod abundance for future integration into ocean acidification monitoring networks, and to characterize carbonate chemistry and nutrients along portions of two WOCE/CLIVAR Repeat Hydrography transects (A20 in the Atlantic and P17N in the Pacific) to identify decadal-scale changes in the carbonate system. These hypotheses and objectives will be addressed through two cruises along survey transects between 35 and 50 degrees North in the northwest Atlantic and northeast Pacific involving a combination of station-work and underway measurements, and a comprehensive array of instruments, including acoustic, optical, towed net, hydrographic, and carbonate chemistry sensors and sampling systems.</p>
<p>This highly inter-disciplinary project, combines expertise in zooplankton ecology, acoustics, and marine chemistry. The proposed work will result in a detailed baseline understanding of variability in the horizontal and vertical distribution, as well as species composition, of thecosome pteropods in the northwest Atlantic and northeast Pacific, making a key contribution to zooplankton ecology generally. In addition, by quantifying the response to current spatial variability within and between the Atlantic and Pacific Oceans, the project will provide important information on the likely response of pteropod distribution to future changes in the vertical distribution of aragonite saturation levels, a necessary component in modeling the impacts of ocean acidification on marine ecosystem function, services, and resources.</p>
<p>Ocean acidification is increasingly appreciated as an urgent societal concern. Thecosome pteropods are key prey for a variety of commercially-exploited fish species, and the improved understanding the PIs seek of pteropod distribution and likely response to changing water column carbonate chemistry will have important implications for our understanding of potential effects of ocean acidification on marine resources.<br />
</p>
OAPS
largerWorkCitation
project
eng; USA
oceans
transect between 35 and 50N along CLIVAR line P17N
2016-08-09
35 and 50 degrees North in the northwest Atlantic and northeast Pacific
0
BCO-DMO catalogue of parameters from P17N Ocean Acidification Pteropod Study: Carbonate chemistry system and hydrography samples from R/V New Horizon NH1208 from a transect 35-50 degrees North, Pacific Ocean, Aug-Sep 2012 (OAPS 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/653355.rdf
Name: cruise_id
Units: unitless
Description: <p>official cruise name from R2R</p>
http://lod.bco-dmo.org/id/dataset-parameter/653356.rdf
Name: station
Units: unitless
Description: <p>station</p>
http://lod.bco-dmo.org/id/dataset-parameter/653357.rdf
Name: instrument
Units: unitless
Description: <p>instrument name</p>
http://lod.bco-dmo.org/id/dataset-parameter/653358.rdf
Name: cast
Units: unitless
Description: <p>cast</p>
http://lod.bco-dmo.org/id/dataset-parameter/653359.rdf
Name: sample
Units: unitless
Description: <p>sample number</p>
http://lod.bco-dmo.org/id/dataset-parameter/653360.rdf
Name: bottle
Units: unitless
Description: <p>bottle number</p>
http://lod.bco-dmo.org/id/dataset-parameter/653361.rdf
Name: bottle_FLAG_W
Units: unitless
Description: <p>WOCE quality flag for the bottle sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/653362.rdf
Name: date
Units: unitless
Description: <p>UTC date</p>
http://lod.bco-dmo.org/id/dataset-parameter/653363.rdf
Name: time
Units: unitless
Description: <p>UTC time</p>
http://lod.bco-dmo.org/id/dataset-parameter/653364.rdf
Name: lat_start
Units: decimal degrees
Description: <p>latitude at start of cast; north is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/653365.rdf
Name: lon_start
Units: decimal degrees
Description: <p>longitude at start of cast; east is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/653366.rdf
Name: depth_w
Units: meters
Description: <p>depth of water</p>
http://lod.bco-dmo.org/id/dataset-parameter/653367.rdf
Name: press
Units: decibars
Description: <p>CTD pressure</p>
http://lod.bco-dmo.org/id/dataset-parameter/653368.rdf
Name: press_flag
Units: unitless
Description: <p>WOCE quality flag: 2-acceptable; 3-questionable; 4-bad; 6-duplicate; 9-missing</p>
http://lod.bco-dmo.org/id/dataset-parameter/653369.rdf
Name: temp
Units: degrees Celsius
Description: <p>CTD temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/653370.rdf
Name: temp_flag
Units: unitless
Description: <p>WOCE quality flag: 2-acceptable; 3-questionable; 4-bad; 6-duplicate; 9-missing</p>
http://lod.bco-dmo.org/id/dataset-parameter/653371.rdf
Name: sal
Units: PSU
Description: <p>CTD salinity; corrected using discrete bottle measured salinity from salinometer</p>
http://lod.bco-dmo.org/id/dataset-parameter/653372.rdf
Name: sal_flag
Units: unitless
Description: <p>WOCE quality flag: 2-acceptable; 3-questionable; 4-bad; 6-duplicate; 9-missing</p>
http://lod.bco-dmo.org/id/dataset-parameter/653373.rdf
Name: SiO4
Units: umol/kg
Description: <p>silicate</p>
http://lod.bco-dmo.org/id/dataset-parameter/653374.rdf
Name: SiO4_flag
Units: unitless
Description: <p>WOCE quality flag: 2-acceptable; 3-questionable; 4-bad; 6-duplicate; 9-missing</p>
http://lod.bco-dmo.org/id/dataset-parameter/653375.rdf
Name: TALK
Units: umol/kg
Description: <p>total alkalinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/653376.rdf
Name: TALK_flag
Units: unitless
Description: <p>WOCE quality flag: 2-acceptable; 3-questionable; 4-bad; 6-duplicate; 9-missing</p>
http://lod.bco-dmo.org/id/dataset-parameter/653377.rdf
Name: DIC
Units: umol/kg
Description: <p>total dissolved inorganic carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/653378.rdf
Name: DIC_flag
Units: unitless
Description: <p>WOCE quality flag: 2-acceptable; 3-questionable; 4-bad; 6-duplicate; 9-missing</p>
http://lod.bco-dmo.org/id/dataset-parameter/653379.rdf
Name: pH
Units: unitless
Description: <p>pH - total scale</p>
http://lod.bco-dmo.org/id/dataset-parameter/653380.rdf
Name: pH_flag
Units: unitless
Description: <p>WOCE quality flag: 2-acceptable; 3-questionable; 4-bad; 6-duplicate; 9-missing</p>
http://lod.bco-dmo.org/id/dataset-parameter/653381.rdf
Name: pH_temp
Units: degrees Celsius
Description: <p>temperature at which pH was measured</p>
http://lod.bco-dmo.org/id/dataset-parameter/653382.rdf
Name: pH_temp_flag
Units: unitless
Description: <p>WOCE quality flag: 2-acceptable; 3-questionable; 4-bad; 6-duplicate; 9-missing</p>
http://lod.bco-dmo.org/id/dataset-parameter/653383.rdf
Name: O2
Units: umol/kg
Description: <p>CTD oxygen corrected using discrete bottle measured oxygen from Winkler titration</p>
http://lod.bco-dmo.org/id/dataset-parameter/653384.rdf
Name: O2_flag
Units: unitless
Description: <p>WOCE quality flag: 2-acceptable; 3-questionable; 4-bad; 6-duplicate; 9-missing</p>
http://lod.bco-dmo.org/id/dataset-parameter/653385.rdf
Name: DIC_deepcorr
Units: umol/kg
Description: <p>total dissolved inorganic carbon corrected by deep isopycnal analysis with CLIVAR 2001</p>
http://lod.bco-dmo.org/id/dataset-parameter/653386.rdf
Name: DIC_deepcorr_flag
Units: unitless
Description: <p>WOCE quality flag: 2-acceptable; 3-questionable; 4-bad; 6-duplicate; 9-missing</p>
http://lod.bco-dmo.org/id/dataset-parameter/653387.rdf
Name: O2_deepcorr
Units: umol/kg
Description: <p>CTD oxygen corrected by deep isopycnal analysis with CLIVAR 2001</p>
http://lod.bco-dmo.org/id/dataset-parameter/653388.rdf
Name: O2_deepcorr_flag
Units: unitless
Description: <p>WOCE quality flag: 2-acceptable; 3-questionable; 4-bad; 6-duplicate; 9-missing</p>
http://lod.bco-dmo.org/id/dataset-parameter/653389.rdf
Name: SiO4_deepcorr
Units: umol/kg
Description: <p>silicate corrected by deep isopycnal analysis with CLIVAR 2001</p>
http://lod.bco-dmo.org/id/dataset-parameter/653390.rdf
Name: SiO4_deepcorr_flag
Units: unitless
Description: <p>WOCE quality flag: 2-acceptable; 3-questionable; 4-bad; 6-duplicate; 9-missing</p>
http://lod.bco-dmo.org/id/dataset-parameter/653391.rdf
Name: TALK_deepcorr
Units: umol/kg
Description: <p>total alkalinity corrected by deep isopycnal analysis with CLIVAR 2001</p>
http://lod.bco-dmo.org/id/dataset-parameter/653392.rdf
Name: TALK_deepcorr_flag
Units: unitless
Description: <p>WOCE quality flag: 2-acceptable; 3-questionable; 4-bad; 6-duplicate; 9-missing</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
118904
https://datadocs.bco-dmo.org/file/JEE1nG5HZJvl2/ctd_chem.csv
ctd_chem.csv
Primary data file for dataset ID 653330
download
https://osprey.bco-dmo.org/dataset/653330/data/download
download
onLine
dataset
<p>Conductivity-Temperature-Depth sensor (CTD, Seabird SBE 911plus) and a SBE43 dissolved oxygen (DO) sensor was used to collect discrete seawater samples for analysis of total dissolved inorganic carbon (DIC), total alkalinity (TA), pH, DO, nutrients (nitrate, phosphate, and silicate), and salinity. Seawater samples were collected for pH, DIC, TA, and nutrients at all 34 stations for all sampling depths. Salinity and DO samples were collected at all stations at every third depth for calibrations of the conductivity and DO sensors on the CTD Rosette. Samples for DO were collected first from the Niskin bottles, followed by pH, DIC/TA (in the same bottle), nutrients, and salinity. Standard protocols were followed for sampling procedures [Dickson et al., 2007]. DIC and TA samples were collected into 250 ml Pyrex borosilicate bottles after being filtered with a 0.45 µm in-line capsule filter (Farrwest Environmental Supply, Texas). Each sample was poisoned with 100 µL of a saturated mercuric chloride solution for preservation [Dickson et al., 2007] and sealed with a ground-glass stopper coated with APIEZON®-L grease and was secured with a rubber band applied to the bottle top.</p>
<p>Dissolved oxygen (DO) samples were collected from CTD Niskin bottles into 150 mL brown glass tincture bottles. Sodium iodide-sodium hydroxide mixture and manganese chloride were added sequentially to the sample immediately after collection and mixed thoroughly. One mL of sulfuric acid was added and mixed into the sample prior to measurement. DO samples were measured after temperature equilibration, within 3 days, on an automated dissolved oxygen titrator developed at Woods Hole Oceanographic Institution [Knapp et al. 1990]. The system is based on the Winkler technique. This method has an accuracy of 1.0 µmol kg-1 and precision of 0.2 µmol kg-1. The titrator was standardized with sodium thiosulfate for each group of analyses, usually about 30 samples. A custom procedure was developed and implemented to detect concentrations of dissolved oxygen &lt; 90 µmol kg-1. In situ temperature was used to calculate potential density in order to convert from mL L-1 to µmol kg-1 for bottle samples. Ideally, the conversion temperature should be the temperature measured at the time of sample drawing, but those were not measured. Bottle values were used to calibrate CTD values.</p>
<p>Salinity samples were collected into 250 mL square cross-sectioned, borosilicate glass bottles and measured on an Autosal Salinometer (Guildline 8400B). PSS-78 salinity was calculated from measured conductivity ratios. Measurements were performed after samples had equilibrated to laboratory temperature, within 3 days after collection. The machine was standardized for each group of analyses, approximately 50 samples. International Association for the Physical Sciences of the Oceans (IAPSO) Standard Seawater Batch P-152 was used for standardization. This method has an accuracy of ±0.003 and precision of ± 0.0002. Bottle analyses were used to calibrate CTD salinity values.</p>
<p>DIC was analyzed using an Apollo SciTech DIC auto-analyzer (Model AS-C3), which uses a nondispersive infrared (NDIR) method. The sample is acidified with a 10% phosphoric acid in 10% sodium chloride solution, and CO2 is purged with high purity nitrogen gas and measured by a LI-COR 7000 infrared analyzer. Certified Reference Material (CRM) from Dr. A. Dickson at Scripps Institution of Oceanography was used to calibrate the DIC auto-analyzer at least once daily. In addition, CRM was measured as a sample every few hours to gauge and correct any potential drift. The precision and accuracy of the instrument was ~ ±2.0 µmol kg-1.</p>
<p>TA was measured with an Apollo SciTech alkalinity auto-titrator (Model AS-ALK2), a Ross combination pH electrode and a pH meter (ORION 3 Star) to perform a modified Gran titration [Wang and Cai, 2004]. The electrode and concentration of hydrochloric acid was calibrated every day. The CRMs were also measured as samples every few hours to correct any potential small drift. The accuracy and precision of the instrument was about ± 2.0 µmol kg-1.&nbsp;</p>
<p>Seawater pH samples were collected directly into 10 cm cylindrical optical cells via silicone tubing and thermostated to 25.0 ± 0.1°C for at least an hour before measurement. Samples were analyzed using an Agilent 8453 UV-VIS spectrophotometer and meta-cresol purple (m-CP) as the indicator [Dickson et al., 2007]. Sample pH was measured on the total scale. Measurements of pH were corrected for indicator perturbation and indicator impurity [Clayton and Byrne, 1993; Dickson et al., 2007; Liu et al., 2011; Yao et al., 2007]. The average of combined corrections was 0.0026 ± 0.0046. The instrument accuracy and precision was 0.002 and 0.001, respectively.&nbsp;<br />
The nutrient samples were filtered through 0.2 µm filters, collected into vials that had been cleaned with 10% hydrochloric acid and were immediately frozen after collection. Samples were analyzed at the University of California at Santa Barbara Marine Science Institute. Nutrient data from NH1208 were found to have relatively larger scatter than the previous P17N cruise data. This may be due to storage issues that involved freezing and possible melting of samples.&nbsp;</p>
<p>PACIFICA recommended adjustments for CLIVAR P17N 2001 are shown below along with deep isopycnal crossover results for NH1208 2012 cruise adjusted to the CLIVAR 2001 PACIFICA-corrected data. These values are listed in the data file as ‘deepcorr’ values. Salinity, DIC, and TA factors are additive, while oxygen and silicate factors are multiplicative. Units for all parameters are in µmol kg-1 except for salinity, which is measured on the practical salinity scale.</p>
<table border="1" cellpadding="0" cellspacing="0" style="line-height:1.6; width:384px">
<tbody>
<tr>
<td style="height:35px; width:66px">
<p>&nbsp;</p>
<p>&nbsp;</p>
</td>
<td style="height:35px; width:78px">
<p>SALINITY</p>
</td>
<td style="height:35px; width:74px">
<p>OXYGEN</p>
</td>
<td style="height:35px; width:78px">
<p>SILICATE</p>
</td>
<td style="height:35px; width:42px">
<p>DIC</p>
</td>
<td style="height:35px; width:46px">
<p>TA</p>
</td>
</tr>
<tr>
<td style="height:34px; width:66px">
<p>CLIVAR 2001</p>
</td>
<td style="height:34px; width:78px">
<p>0</p>
</td>
<td style="height:34px; width:74px">
<p>1</p>
</td>
<td style="height:34px; width:78px">
<p>1.048</p>
</td>
<td style="height:34px; width:42px">
<p>-4</p>
</td>
<td style="height:34px; width:46px">
<p>8</p>
</td>
</tr>
<tr>
<td style="height:14px; width:66px">
<p>NH1208 2012</p>
</td>
<td style="height:14px; width:78px">
<p>0</p>
</td>
<td style="height:14px; width:74px">
<p>0.955</p>
</td>
<td style="height:14px; width:78px">
<p>1.032</p>
</td>
<td style="height:14px; width:42px">
<p>11</p>
</td>
<td style="height:14px; width:46px">
<p>10</p>
</td>
</tr>
</tbody>
</table>
<p>&nbsp;</p>
<p><strong>Cited References:</strong><br />
Clayton, T. D., and R. H. Byrne (1993), Spectrophotometric seawater pH measurements: total hydrogen ion concentration scale calibration of m-cresol purple and at-sea results, Deep. Res., 40(10), 2115-2129, doi:10.1016/0967-0637(93)90048-8.<br />
Dickson, A., C. Sabine, and J. Christian (2007), Guide to best practices for ocean CO2 measurement, PICES Spec. Publ.,191.<br />
Knapp, George P., Marvel C. Stalcup, and Robert J. Stanley (1990), Automated oxygen titration and salinity determination. Woods Hole Oceanographic Institution.<br />
Liu, X., M. C. Patsavas, and R. H. Byrne (2011), Purification and characterization of meta-cresol purple for spectrophotometric seawater ph measurements, Environ. Sci. Technol., 45(11), 4862-4868, doi:10.1021/es200665d.<br />
Wang, Z. A., and W.-J. Cai (2004), Carbon dioxide degassing and inorganic carbon export from a marsh-dominated estuary (the Duplin River): A marsh CO2 pump, Limnol. Oceanogr., 49(2), 341-354, doi:10.4319/lo.2004.49.2.0341.<br />
Yao, W., X. Liu, and R. H. Byrne (2007), Impurities in indicators used for spectrophotometric seawater pH measurements: Assessment and remedies, Mar. Chem., 107(2), 167-172, doi:10.1016/j.marchem.2007.06.012.</p>
Specified by the Principal Investigator(s)
<p>Quality flags: 2-acceptable, 3-questionable, 4-bad, 6-duplicate, 9-missing</p>
<p><strong>BCO-DMO Processing:</strong><br />
- added conventional header with dataset name, PI name, version date<br />
- renamed parameters to BCO-DMO standard<br />
- added instrument column<br />
- replaced -999 with nd (no data)</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
PI Supplied Instrument Name: PI Supplied Instrument Description:Autosal Salinometer (Guildline 8400B) Instrument Name: Autosal salinometer Instrument Short Name:salinometer Instrument Description: The salinometer is an instrument for measuring the salinity of a water sample. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB30/
PI Supplied Instrument Name: Instrument Name: CTD Sea-Bird 911 Instrument Short Name:CTD SBE 911 Instrument Description: The Sea-Bird SBE 911 is a type of CTD instrument package. The SBE 911 includes the SBE 9 Underwater Unit and the SBE 11 Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 and SBE 11 is called a SBE 911. The SBE 9 uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 and SBE 4). The SBE 9 CTD can be configured with auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). More information from Sea-Bird Electronics. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0035/
PI Supplied Instrument Name: PI Supplied Instrument Description:Apollo SciTech DIC auto-analyzer (Model AS-C3). The analyzer acidifies each sample and the total CO2 is purged and then measured using a LI 7000 infrared analyzer. Instrument Name: Elemental Analyzer Instrument Short Name: Instrument Description: Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB01/
PI Supplied Instrument Name: Instrument Name: Niskin bottle Instrument Short Name:Niskin bottle Instrument Description: A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/
PI Supplied Instrument Name: PI Supplied Instrument Description:Agilent 8453 UV-VIS spectrophotometer: measures the relative absorption of pH-sensitive indicator at different wavelengths. Instrument Name: Spectrophotometer Instrument Short Name:Spectrophotometer Instrument Description: An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB20/
PI Supplied Instrument Name: PI Supplied Instrument Description:Apollo SciTech alkalinity auto-titrator (Model AS-ALK2): acid-base titrator, which automates the Gran titration procedure to measure alkalinity. Instrument Name: Titrator Instrument Short Name:Titrator Instrument Description: Titrators are instruments that incrementally add quantified aliquots of a reagent to a sample until the end-point of a chemical reaction is reached. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB12/
PI Supplied Instrument Name: PI Supplied Instrument Description:Automated dissolved oxygen titrator developed at Woods Hole Oceanographic Institution [Knapp et al. 1990] Instrument Name: Winkler Oxygen Titrator Instrument Short Name:Winkler Titrator Instrument Description: A Winkler Oxygen Titration system is used for determining concentration of dissolved oxygen in seawater. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB12/
Cruise: NH1208
NH1208
R/V New Horizon
Community Standard Description
International Council for the Exploration of the Sea
R/V New Horizon
vessel
NH1208
Gareth Lawson
Woods Hole Oceanographic Institution
http://hdl.handle.net/1834/43090
Report describing NH1208
R/V New Horizon
Community Standard Description
International Council for the Exploration of the Sea
R/V New Horizon
vessel