http://lod.bco-dmo.org/id/dataset/820165
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
2020-08-06
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Dissolved nitrite and ammonium concentration data from R/V Atlantis (AT15-61) cruise in Jan-Feb 2010 and R/V Melville (MV1104) cruise in Mar-Apr 2011 in the Eastern Tropical South Pacific
2020-08-06
publication
2020-08-06
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-05-07
publication
https://doi.org/10.26008/1912/bco-dmo.820165.1
Karen L. Casciotti
Woods Hole Oceanographic Institution
principalInvestigator
Angela N. Knapp
Florida State University EOAS
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Casciotti, K. L., Santoro, A. E., Knapp, A. N. (2021) Dissolved nitrite and ammonium concentration data from R/V Atlantis (AT15-61) cruise in Jan-Feb 2010 and R/V Melville (MV1104) cruise in Mar-Apr 2011 in the Eastern Tropical South Pacific. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2020-08-06 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.820165.1 [access date]
ETSP nitrite (NO2) and ammonium (NH4) concentration data Dataset Description: Methods and Sampling: <p>Seawater samples were obtained during the R/V Atlantis (AT15-61) and R/V Melville (MV1104) cruises in Jan-Feb 2010 and Mar-Apr 2011.&nbsp; Water samples were collected at discrete depths using a standard 24-bottle Niskin rosette sampler equipped with an SBE9plus conductivity-temperature-depth (CTD) sensor package (SeaBird Electronics, Bellevue, WA).&nbsp;</p>
<p>Ammonium concentration ([NH<sub>4</sub><sup>+</sup>]) was determined on-ship in unfiltered 50 mL seawater samples using&nbsp;<em>o</em>-phthaldialdehyde derivatization (Holmes<em>&nbsp;et al.</em>, 1999) and measurement on an Aquafluor 8000 handheld fluorometer (Turner Designs), with modifications as suggested in Taylor<em>&nbsp;et al.</em>, 2007. Nitrite ([NO<sub>2</sub><sup>-</sup>]) was determined on-ship in unfiltered 50 mL sample volumes using standard colorimetric methods (Strickland and Parsons, 1968).&nbsp; NH<sub>4</sub><sup>+</sup>&nbsp;standards (30 – 300 nM) were freshly prepared for each analysis in duplicate using deep water (&gt; 500 m) from the same station, which consistently had a lower blank than ultrapure water. Detection limits for [NH<sub>4</sub><sup>+</sup>] and&nbsp; [NO<sub>2</sub><sup>-</sup>] were 0.010 µM, and 0.10 µM for [NO<sub>2</sub><sup>-</sup>]. Measured values are reported even if they are lower than the detection limit.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0961098 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0961098
completed
Karen L. Casciotti
Woods Hole Oceanographic Institution
650-721-5545
Department of Environmental Earth System Science 473 Via Ortega, Y2E2 Building, Room 140
Stanford
CA
94305
USA
kcasciotti@stanford.edu
pointOfContact
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
asNeeded
Dataset Version: 1
Unknown
Depth
Year
Month
Day
Latitude
Longitude
Station
Cast
NO2
NH4
ISO_Date_Local
SBE9plus conductivity-temperature-depth (CTD) sensor package
standard 24-bottle Niskin rosette sampler
Turner Designs Aquafluor 8000 handheld fluorometer/turbidometer
theme
None, User defined
depth
year
month_local
day_local
latitude
longitude
station
cast
Nitrite
Ammonium
date_local
featureType
BCO-DMO Standard Parameters
CTD Sea-Bird 9
Niskin bottle
Turner Designs Aquafluor 8000
instrument
BCO-DMO Standard Instruments
MV1104
AT15-61
service
Deployment Activity
Eastern Tropical South Pacific
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.
Expression of Microbial Nitrification in the Stable Isotopic Systematics of Oceanic Nitrite and Nitrate
https://osprey.bco-dmo.org/project/555516
Expression of Microbial Nitrification in the Stable Isotopic Systematics of Oceanic Nitrite and Nitrate
<p><em>Description from NSF award abstract:</em><br />
Closing the marine budgets of nitrate and nitrous oxide are central goals for researchers interested in nutrient-driven changes in primary productivity and climate change. With the implementation of new methods for oxygen isotopic analysis of seawater nitrate, it will be possible to construct a budget for nitrate based on its oxygen isotopic distribution that is complementary to nitrogen isotope budgets. Before we can effectively use oxygen isotopes in nitrate to inform the current understanding of the marine nitrogen cycle, we must first understand how different processes that produce (nitrification) and consume (assimilation, denitrification) nitrate affect its oxygen isotopic signature.</p>
<p>In this study, researchers at the Woods Hole Oceanographic Institution will provide a quantitative assessment of the oxygen isotopic systematics of nitrification in the field and thus fill a key gap in our understanding of 18O variations in nitrate, nitrite, and nitrous oxide. The primary goal is to develop a quantitative prediction of the oxygen isotopic signatures of nitrite and nitrate produced during nitrification in the sea. The researchers hypothesize that oxygen isotopic fractionation during nitrification is the primary factor setting the 18O values of newly produced nitrate and nitrite. Secondly, they hypothesize that oxygen atom exchange is low where ammonia oxidation and nitrite oxidation are tightly coupled, but may increase in regions with nitrite accumulation, such as in the primary and secondary nitrite maxima. They will test these hypotheses with a series of targeted laboratory and field experiments, as well as with measurements of nitrite and nitrate isotopic distributions extending through the euphotic zone, primary nitrite maximum, and secondary nitrite maximum of the Eastern Tropical South Pacific. The results of these experiments are expected to provide fundamental information required for the interpretation of 18O isotopic signatures in nitrite, nitrate, and N2O in the context of underlying microbial processes. A better understanding of these features and the processes involved is important for quantifying new production, controls on the N budget, and N2O production in the ocean -- which should lead to a better understanding of the direct and indirect interactions among the nitrogen cycle, marine chemistry, and climate.</p>
Microbial Nitrification
largerWorkCitation
project
eng; USA
oceans
Eastern Tropical South Pacific
-100.001
-79.985
-20
-9.999
2010-01-31
2011-04-18
Eastern Tropical South Pacific
0
BCO-DMO catalogue of parameters from Dissolved nitrite and ammonium concentration data from R/V Atlantis (AT15-61) cruise in Jan-Feb 2010 and R/V Melville (MV1104) cruise in Mar-Apr 2011 in the Eastern Tropical South Pacific
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/820177.rdf
Name: Depth
Units: meters
Description: <p>Sample depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/820178.rdf
Name: Year
Units: unitless
Description: <p>Deployment year</p>
http://lod.bco-dmo.org/id/dataset-parameter/820180.rdf
Name: Month
Units: unitless
Description: <p>Deployment month (local)</p>
http://lod.bco-dmo.org/id/dataset-parameter/820181.rdf
Name: Day
Units: unitless
Description: <p>Deployment day (local)</p>
http://lod.bco-dmo.org/id/dataset-parameter/820182.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude of sample collection, South is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/820183.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude of sample collection, West is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/820184.rdf
Name: Station
Units: unitless
Description: <p>Station Number</p>
http://lod.bco-dmo.org/id/dataset-parameter/820185.rdf
Name: Cast
Units: unitless
Description: <p>Cast Number</p>
http://lod.bco-dmo.org/id/dataset-parameter/820186.rdf
Name: NO2
Units: micromole per liter (umol/L)
Description: <p>Nitrite concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820187.rdf
Name: NH4
Units: micromole per liter (umol/L)
Description: <p>Ammonium concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820944.rdf
Name: ISO_Date_Local
Units: yyyy-mm-dd
Description: <p>Date of sampling in ISO format (yyyy-mm-dd). Timezone was GMT-5 in 2010, GMT-4 in 2011</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
21753
https://darchive.mblwhoilibrary.org/bitstream/1912/27074/1/dataset-820165_etsp-no2-nh4__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.820165.1
download
onLine
dataset
<p>Seawater samples were obtained during the R/V Atlantis (AT15-61) and R/V Melville (MV1104) cruises in Jan-Feb 2010 and Mar-Apr 2011.&nbsp; Water samples were collected at discrete depths using a standard 24-bottle Niskin rosette sampler equipped with an SBE9plus conductivity-temperature-depth (CTD) sensor package (SeaBird Electronics, Bellevue, WA).&nbsp;</p>
<p>Ammonium concentration ([NH<sub>4</sub><sup>+</sup>]) was determined on-ship in unfiltered 50 mL seawater samples using&nbsp;<em>o</em>-phthaldialdehyde derivatization (Holmes<em>&nbsp;et al.</em>, 1999) and measurement on an Aquafluor 8000 handheld fluorometer (Turner Designs), with modifications as suggested in Taylor<em>&nbsp;et al.</em>, 2007. Nitrite ([NO<sub>2</sub><sup>-</sup>]) was determined on-ship in unfiltered 50 mL sample volumes using standard colorimetric methods (Strickland and Parsons, 1968).&nbsp; NH<sub>4</sub><sup>+</sup>&nbsp;standards (30 – 300 nM) were freshly prepared for each analysis in duplicate using deep water (&gt; 500 m) from the same station, which consistently had a lower blank than ultrapure water. Detection limits for [NH<sub>4</sub><sup>+</sup>] and&nbsp; [NO<sub>2</sub><sup>-</sup>] were 0.010 µM, and 0.10 µM for [NO<sub>2</sub><sup>-</sup>]. Measured values are reported even if they are lower than the detection limit.</p>
Specified by the Principal Investigator(s)
<p>Full protocol on seawater [NH4+] processing can be found below under Supplemental Files: "Ammonium Concentration in Seawater Protocol Santoro&nbsp;Lab v2.3"</p>
<p>BCO-DMO processing:&nbsp;<br />
-&nbsp;Adjusted parameter names to comply with database requirements.&nbsp;<br />
-&nbsp;Combined year, month, day fields into one date field.&nbsp;<br />
-&nbsp;Units in parentheses removed and added to Parameter Description metadata section.&nbsp;<br />
-&nbsp;Added a conventional header with dataset name, PI name, version date.<br />
-&nbsp;Missing data identifier of 'NaN' replaced with 'nd'&nbsp; ('nd' is BCO-DMO system default missing data identifier).&nbsp;</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
SBE9plus conductivity-temperature-depth (CTD) sensor package
SBE9plus conductivity-temperature-depth (CTD) sensor package
PI Supplied Instrument Name: SBE9plus conductivity-temperature-depth (CTD) sensor package PI Supplied Instrument Description:SeaBird 9plus conductivity-temperature-depth (CTD) sensor package (SeaBird Electronics, Bellevue, WA). Instrument Name: CTD Sea-Bird 9 Instrument Short Name:CTD SBE 9 Instrument Description: The Sea-Bird SBE 9 is a type of CTD instrument package. The SBE 9 is the Underwater Unit and is most often combined with the SBE 11 Deck Unit (for real-time readout using conductive wire) when deployed from a research 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, fluorometer, altimeter, etc.). Note that in most cases, it is more accurate to specify SBE 911 than SBE 9 since it is likely a SBE 11 deck unit was used. more information from Sea-Bird Electronics Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/130/
standard 24-bottle Niskin rosette sampler
standard 24-bottle Niskin rosette sampler
PI Supplied Instrument Name: standard 24-bottle Niskin rosette sampler 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/
Turner Designs Aquafluor 8000 handheld fluorometer/turbidometer
Turner Designs Aquafluor 8000 handheld fluorometer/turbidometer
PI Supplied Instrument Name: Turner Designs Aquafluor 8000 handheld fluorometer/turbidometer PI Supplied Instrument Description:AquaFluor® is a lightweight, inexpensive, handheld fluorometer/turbidimeter ideal for field use. Can be configured with one or two channels to measure turbidity, chlorophyll, algae, dyes, ammonium, CDOM, and more. Detailed description at https://www.turnerdesigns.com/aquafluor-handheld-fluorometer Instrument Name: Turner Designs Aquafluor 8000 Instrument Short Name:Turner Designs Aquafluor 8000 Instrument Description: The Turner Designs Aquafluor 8000 is a lightweight, handheld fluorometer/turbidimeter ideal for field use. It can be configured with one or two channels to measure turbidity, chlorophyll, algae, dyes, ammonium, CDOM, and more. Detailed description at https://www.turnerdesigns.com/aquafluor-handheld-fluorometer
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
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