http://lod.bco-dmo.org/id/dataset/855139
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
2021-07-06
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
DOP concentration observations from the global ocean between 1990 and 2021 (DOP N2 fixation and export production project)
2023-08-15
publication
2023-08-15
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-10-06
publication
https://doi.org/10.26008/1912/bco-dmo.855139.1
Angela N. Knapp
Florida State University EOAS
principalInvestigator
Robert T. Letscher
University of New Hampshire
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: Knapp, A. N., Letscher, R. T., Liang, Z. (2023) DOP concentration observations from the global ocean between 1990 and 2021 (DOP N2 fixation and export production project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 4) Version Date 2023-10-15 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.855139.4 [access date]
DOP concentration observations in the global ocean between 1990 and 2021. Dataset Description: <p>DOP&nbsp;(Dissolved Organic Phosphorus) concentration observations in the global ocean between 1990 and 2021.</p> Methods and Sampling: <p><strong>Sampling and analytical procedures:&nbsp;</strong></p>
<p>For samples in this study, Whatman glass-fiber filters (GF/F) with a nominal 0.7 µm pore size were used to filter samples collected on the P18-2016 and GOA2013 cruises. Polycarbonate filters with a nominal 0.4 µm pore size were used to filter samples collected on the CoFeMUG and WebbPacific2007 cruises. Polyesthersulfone (PES) filters with a nominal 0.2 µm pore size were used to filter samples collected from SCALE, SWINGS, P06-2017, ETSP2010, ETSP2011 and GOM2019 cruises. All samples were stored in high density polyethylene bottles at -20 ˚C until measuring total dissolved phosphorus (TDP) concentration.</p>
<p>DOP (Dissolved Organic Phosphorus) concentrations in this study were calculated as the difference between TDP concentrations ([TDP]) and SRP concentrations ([SRP]) of samples ([DOP] = [TDP] - [SRP]). For DOP concentrations reported here, TDP concentrations were measured by the ash/hydrolysis method based on Monaghan and Ruttenberg, 1999. Briefly, for samples collected &gt;1 year prior to analysis, the sample pH was reduced to 1 by adding ~150 µL 6 M ACS-grade HCl to the sample bottle and placing the bottle in a reciprocal shaker overnight. Then, 6 ml of the acidified sample was added to an acid washed, 500 ˚C combusted glass vial, and 0.6 ml of 4.3 M NaCl/0.3 M MgSO4 solution was added to the acidified sample. Subsequently, vials were put into a drying oven at 70 ˚C until appearing dry (often 4-5 days). Then, each vial was covered with aluminum foil and transferred to a muffle oven to bake at 130 ˚C for 3 hours and then at 500 ˚C for 4.5 hours. Afterwards, 1.8 mL 0.75 M ACS-grade HCl was added to each vial and capped tightly with Teflon-lined caps, then heated at 80 ˚C for 20 min to hydrolyze the polyphosphate left after ashing. After heating, 4.2 mL ultra-pure water (18.2 MΩ_ cm) was added to each vial and heated at 80 ˚C for 10 min to dissolved all remaining solids. I assume quantitative conversion of DOP to SRP and the resulting SRP concentration was measured by using the colorimetric phosphomolybdate-blue method (Hansen and Koroleff, 1999). The final DOP concentration was calculated by the difference between SRP concentration and TDP concentration ([DOP] = [TDP] - [SRP]).&nbsp;</p>
<p>TDP concentrations collected from the published literature were measured by three methods: ash/hydrolysis, UV oxidation, and wet oxidation. The ash/hydrolysis method was also used on samples from the Pulse-26, STN F, KT00A, B, KT01Eq, EN391 and SJ0609 cruises. Wet oxidation is a chemical oxidation where a persulfate reagent is added to seawater and then heated to 120 ˚C for 30 minutes to convert DOP to SRP (Hansen and Koroleff, 1999). Wet oxidation methods were employed to determine TDP concentrations on cruises including BIOSOPE, OUTPACE, KH-11-10, KH-12-3, KH-13-7, KH-14-3, KH-17-4, SATL2004, KM0415, Line P and Latitude II cruises, and at the BATS site. UV oxidation is a photochemical oxidation method using UV radiation to covert DOP to SRP (Armstrong et al., 1966). UV oxidation methods were used to measure the TDP concentrations on cruises including AMT 10, AMT 12, AMT 14, AMT 15, AMT 16, D279,&nbsp; 36N, Line P, GB 93, MAB 94, MAB 96,&nbsp;Cavender-Barres cruises, and at Station ALOHA</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1829797 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1829797
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1829916 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1829916
completed
Angela N. Knapp
Florida State University EOAS
(979) 862-5235
797 Lamar St. Dept of Oceanography, Eller O&M Room 1204
College Station
TX
77843
USA
aknapp@tamu.edu
pointOfContact
Robert T. Letscher
University of New Hampshire
603-862-1008
Earth Sciences & Ocean Process Analysis Laboratory 142 Morse Hall
Durham
NH
USA
robert.letscher@unh.edu
pointOfContact
asNeeded
Dataset Version: 4
Unknown
EXPOCODE
cruise
date
StationID
BottleID
LATITUDE
LONGITUDE
depth
Temperature
Salinity
NO3_plus_NO2
SRP
DOP
DOP_flag
region
method
reference
CTD/Niskin Rosette bottles
theme
None, User defined
EXPOCODE
cruise name
date
station id
bottle
latitude
longitude
depth
water temperature at measurement depth
sal_nis
nitrate plus nitrite
SRP
Dissolved Organic Phosphorus
quality flag
region
sampling_method
reference_paper
featureType
BCO-DMO Standard Parameters
Niskin bottle
instrument
BCO-DMO Standard Instruments
KN192-05
KM0701
MV1104
AT15-61
MV1310
service
Deployment Activity
South Atlantic subtropical gyre and Benguela upwelling region
SP1/South Pacific
Eastern Tropical South Pacific
North Pacific Gulf of Alaska: 48ºN to 59ºN and 129ºW to 153ºW
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.
Collaborative Research: Dissolved organic phosphorus controls on marine nitrogen fixation and export production
https://osprey.bco-dmo.org/project/820043
Collaborative Research: Dissolved organic phosphorus controls on marine nitrogen fixation and export production
<p>This study was global in nature, but included significant numbers of analyses from: GO-SHIP cruises (P06-2017, P18-2016, I08S-2016, I09N-2016); Eastern Tropical South Pacific; Atlantic, Pacific, and Indian Ocean sectors of the Southern Ocean; Gulf of Alaska; and the western Pacific.</p>
<p><em>NSF Award Abstract:</em><br />
Phytoplankton play an important role in the Earth's elemental cycles of carbon and nitrogen. In addition to sunlight, phytoplankton living in the surface waters of the oceans require the elements nitrogen and phosphorus for growth. Much of these nutrients are supplied in their inorganic forms from mixing of deep waters towards the surface during the winter months when vertical stability of the water column breaks down. However much of the low latitude oceans, 45degS45degN, suffer from limited nutrient input to sunlit surface waters due to strong thermal stratification (vertical stability) of the upper water column. As a consequence, tropical and subtropical phytoplankton have devised alternative ways of acquiring nitrogen and phosphorus. Marine nitrogen fixation is a process by which specialized microbes utilize the abundant nitrogen gas from the atmosphere to convert elemental nitrogen into the bioavailable form ammonia. These nitrogen fixing phytoplankton and many others also use organic forms of phosphorus in the low latitude ocean where inorganic nutrients are often scarce. This project will significantly increase the number of dissolved organic nitrogen and dissolved organic phosphorus concentration measurements, especially from the currently under-sampled Pacific and Indian Oceans. Changes in the concentration of organic nutrients across the surface ocean will be used to infer rates of organic nutrient use by phytoplankton in numerical models. Specifically, the role for the biological uptake of dissolved organic phosphorus to stimulate the processes of marine nitrogen fixation and photosynthesis in the low latitude ocean will be quantified from the combined data and model output. The project will train one graduate student and several undergraduate students in both laboratory chemical analysis techniques and numerical simulation of ocean biological and chemical processes. New scientific knowledge will be shared with the public via a social media campaign and will inform the development of the next generation of global climate models.</p>
<p>The marine biogeochemical modeling community has identified the lack of dissolved organic nitrogen (DON) and especially dissolved organic phosphorus (DOP) concentration measurements from the upper 300 m of the global ocean as crucial gaps in our ability to accurately model export production and N2 fixation rates in the subtropics. The proposed work will significantly increase global data coverage of marine DON and DOP concentration measurements, in particular from under-sampled ocean regions in the Indian Ocean, western, central, and eastern tropical South Pacific, Gulf of Alaska, eastern subtropical and subpolar South Pacific, Southern Ocean, subtropical North Atlantic, and tropical South Atlantic Ocean basins. These new measurements will be assimilated in state-of-the-art biogeochemical models to constrain the relative cycling rates of DOP and DON and to quantify the role of preferential DOP consumption as a P source supporting export production and N2 fixation in the low latitude ocean. Model output will solve for the regionally-resolved fraction of new production that accumulates as DON and DOP, autotrophic DOP uptake rates, as well as the remineralization rates for DON and DOP. The model output will also include the first regionally variable rate estimates of euphotic zone DOP consumption sustaining export production and N2 fixation to be constrained by observations from the Pacific and Indian Oceans. Thus, the new concentration measurements and diagnostic modeling will allow us to evaluate the quantitative role for regional variability in DOP consumption and recycling that supports export production and N2 fixation in the low latitude ocean.</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>
DOP N2 fixation and export production
largerWorkCitation
project
eng; USA
oceans
South Atlantic subtropical gyre and Benguela upwelling region; SP1/South Pacific; Eastern Tropical South Pacific; North Pacific Gulf of Alaska: 48ºN to 59ºN and 129ºW to 153ºW
-180
179.922
-66.5003
58.9995
2004-10-28
2021-03-05
Global scope (see Description box for details)
0
BCO-DMO catalogue of parameters from DOP concentration observations from the global ocean between 1990 and 2021 (DOP N2 fixation and export production 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/868788.rdf
Name: EXPOCODE
Units: unitless
Description: <p>expedition code</p>
http://lod.bco-dmo.org/id/dataset-parameter/868789.rdf
Name: cruise
Units: unitless
Description: <p>sampling cruise</p>
http://lod.bco-dmo.org/id/dataset-parameter/868790.rdf
Name: date
Units: unitless
Description: <p>sampling date (UTC); YYYY-MM-DD</p>
http://lod.bco-dmo.org/id/dataset-parameter/868791.rdf
Name: StationID
Units: unitless
Description: <p>sampling station</p>
http://lod.bco-dmo.org/id/dataset-parameter/868792.rdf
Name: BottleID
Units: unitless
Description: <p>sampling bottle</p>
http://lod.bco-dmo.org/id/dataset-parameter/868793.rdf
Name: LATITUDE
Units: decimal degrees
Description: <p>latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/868794.rdf
Name: LONGITUDE
Units: decimal degrees
Description: <p>longitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/868795.rdf
Name: depth
Units: meters (m)
Description: <p>sampling depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/868796.rdf
Name: Temperature
Units: degrees Celsius
Description: <p>temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/868797.rdf
Name: Salinity
Units: psu
Description: <p>salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/868798.rdf
Name: NO3_plus_NO2
Units: uM
Description: <p>nitrate + nitrite concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/868799.rdf
Name: SRP
Units: uM
Description: <p>soluble reactive phosphorus concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/868800.rdf
Name: DOP
Units: uM
Description: <p>DOP concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/868801.rdf
Name: DOP_flag
Units: unitless
Description: <p>WOCE bottle quality codes; 2: acceptable measurement; 3: questionable measurement</p>
http://lod.bco-dmo.org/id/dataset-parameter/868802.rdf
Name: region
Units: unitless
Description: <p>sampling ocean basin</p>
http://lod.bco-dmo.org/id/dataset-parameter/868803.rdf
Name: method
Units: unitless
Description: <p>methods employed to measure DOP concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/868804.rdf
Name: reference
Units: unitless
Description: <p>data source</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
1161488
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/cc914a37-f2b4-4da9-83f8-272bb84a48ec/content
download
1163211
https://darchive.mblwhoilibrary.org/bitstream/1912/29445/1/dataset-855139_dopv2021__v3.tsv
download
1172326
https://darchive.mblwhoilibrary.org/bitstream/1912/28002/1/dataset-855139_dopv2021__v2.tsv
download
1167302
https://darchive.mblwhoilibrary.org/bitstream/1912/27610/1/dataset-855139_dopv2021__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.855139.1
download
onLine
dataset
<p><strong>Sampling and analytical procedures:&nbsp;</strong></p>
<p>For samples in this study, Whatman glass-fiber filters (GF/F) with a nominal 0.7 µm pore size were used to filter samples collected on the P18-2016 and GOA2013 cruises. Polycarbonate filters with a nominal 0.4 µm pore size were used to filter samples collected on the CoFeMUG and WebbPacific2007 cruises. Polyesthersulfone (PES) filters with a nominal 0.2 µm pore size were used to filter samples collected from SCALE, SWINGS, P06-2017, ETSP2010, ETSP2011 and GOM2019 cruises. All samples were stored in high density polyethylene bottles at -20 ˚C until measuring total dissolved phosphorus (TDP) concentration.</p>
<p>DOP (Dissolved Organic Phosphorus) concentrations in this study were calculated as the difference between TDP concentrations ([TDP]) and SRP concentrations ([SRP]) of samples ([DOP] = [TDP] - [SRP]). For DOP concentrations reported here, TDP concentrations were measured by the ash/hydrolysis method based on Monaghan and Ruttenberg, 1999. Briefly, for samples collected &gt;1 year prior to analysis, the sample pH was reduced to 1 by adding ~150 µL 6 M ACS-grade HCl to the sample bottle and placing the bottle in a reciprocal shaker overnight. Then, 6 ml of the acidified sample was added to an acid washed, 500 ˚C combusted glass vial, and 0.6 ml of 4.3 M NaCl/0.3 M MgSO4 solution was added to the acidified sample. Subsequently, vials were put into a drying oven at 70 ˚C until appearing dry (often 4-5 days). Then, each vial was covered with aluminum foil and transferred to a muffle oven to bake at 130 ˚C for 3 hours and then at 500 ˚C for 4.5 hours. Afterwards, 1.8 mL 0.75 M ACS-grade HCl was added to each vial and capped tightly with Teflon-lined caps, then heated at 80 ˚C for 20 min to hydrolyze the polyphosphate left after ashing. After heating, 4.2 mL ultra-pure water (18.2 MΩ_ cm) was added to each vial and heated at 80 ˚C for 10 min to dissolved all remaining solids. I assume quantitative conversion of DOP to SRP and the resulting SRP concentration was measured by using the colorimetric phosphomolybdate-blue method (Hansen and Koroleff, 1999). The final DOP concentration was calculated by the difference between SRP concentration and TDP concentration ([DOP] = [TDP] - [SRP]).&nbsp;</p>
<p>TDP concentrations collected from the published literature were measured by three methods: ash/hydrolysis, UV oxidation, and wet oxidation. The ash/hydrolysis method was also used on samples from the Pulse-26, STN F, KT00A, B, KT01Eq, EN391 and SJ0609 cruises. Wet oxidation is a chemical oxidation where a persulfate reagent is added to seawater and then heated to 120 ˚C for 30 minutes to convert DOP to SRP (Hansen and Koroleff, 1999). Wet oxidation methods were employed to determine TDP concentrations on cruises including BIOSOPE, OUTPACE, KH-11-10, KH-12-3, KH-13-7, KH-14-3, KH-17-4, SATL2004, KM0415, Line P and Latitude II cruises, and at the BATS site. UV oxidation is a photochemical oxidation method using UV radiation to covert DOP to SRP (Armstrong et al., 1966). UV oxidation methods were used to measure the TDP concentrations on cruises including AMT 10, AMT 12, AMT 14, AMT 15, AMT 16, D279,&nbsp; 36N, Line P, GB 93, MAB 94, MAB 96,&nbsp;Cavender-Barres cruises, and at Station ALOHA</p>
Specified by the Principal Investigator(s)
<p><strong>Processing notes from researchers:</strong></p>
<p>Any reported negative DOP concentration (DOP concentrations &lt;0 µM) is marked as “BDL”(&nbsp;below detection limits) in this dataset. A quality flag&nbsp;is added to the DOP concentration by using WOCE Water Sample Quality Codes. In this dataset, DOP concentrations with “BDL” are flagged with code 3 (“questionable measurements”) and other DOP concentrations are flagged with code 2 (“acceptable measurement”).&nbsp;</p>
<p><strong>Version 2 dataset updates:</strong></p>
<p>Data quality flag column added</p>
<p>The PO4 column has been renamed to SRP (soluble reactive phosphorus) to improve accuracy&nbsp;</p>
<p><strong>Version 3 dataset updates:</strong></p>
<p>Metadata (e.g. sampling date, Salinity, Temperature, NO3+NO2 and SRP) have been added for the cruise Gulf of Alaska 2013, AMT10, AMT12, AMT14, AMT15, AMT17, KH-11-10, KH-12-3, KH-13-7, KH-14-3, KH-17-4, OC279, OC297, OC318, and OC325.</p>
<p><strong>Version 4 dataset updates:</strong></p>
<p>Dr. Kaycie Lanpher shared DOP concentration observations from the GO-SHIP P06-2017 cruise based on the published article (Lanpher &amp; Popendorf, 2021) with the Contact Zhou Liang, &nbsp;and these DOP concentration observations were added into the DOPv2021 dataset with their authorization.</p>
<p>&nbsp;</p>
Specified by the Principal Investigator(s)
Fields renamed to conform with BCO-DMO standard data practices
Date format converted to yyyy-mm-dd from mm/dd/yy
Removed commas from the reference field
Specified by BCO-DMO Data Managers
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
CTD/Niskin Rosette bottles
CTD/Niskin Rosette bottles
PI Supplied Instrument Name: CTD/Niskin Rosette bottles PI Supplied 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. 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/
Cruise: KN192-05
KN192-05
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
KN192-05
Mak A. Saito
Woods Hole Oceanographic Institution
http://bcodata.whoi.edu/CoFeMUG/CruiseReport_KN192-5.pdf
Report describing KN192-05
Cruise: KM0701
KM0701
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel
KM0701
Zackary I. Johnson
University of Hawai'i
http://bcodata.whoi.edu/WP2/wp2_cruise_report.pdf
Report describing KM0701
Cruise: MV1104
MV1104
R/V Melville
Community Standard Description
International Council for the Exploration of the Sea
R/V Melville
vessel
MV1104
William M. Berelson
University of Southern California
Cruise: AT15-61
AT15-61
R/V Atlantis
Community Standard Description
International Council for the Exploration of the Sea
R/V Atlantis
vessel
AT15-61
Douglas G. Capone
University of Southern California
Cruise: MV1310
MV1310
R/V Melville
Community Standard Description
International Council for the Exploration of the Sea
R/V Melville
vessel
MV1310
Dennis Hansell
University of Miami Rosenstiel School of Marine and Atmospheric Science
http://dmoserv3.whoi.edu/data_docs/NorthPacific_RDOC/MV1310_Preliminary_Report_2.pdf
Report describing MV1310
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel
R/V Melville
Community Standard Description
International Council for the Exploration of the Sea
R/V Melville
vessel
R/V Atlantis
Community Standard Description
International Council for the Exploration of the Sea
R/V Atlantis
vessel