http://lod.bco-dmo.org/id/dataset/969967
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
2025-07-25
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
CTD profile data from NCDC research cruise on the R/V Kilo Moana (KM2206) in the Subtropical North Pacific from June 5th to July 5th, 2022
2025-07-25
publication
2025-07-25
revision
BCO-DMO Linked Data URI
2025-07-25
creation
http://lod.bco-dmo.org/id/dataset/969967
Kevin R. Arrigo
Stanford University
principalInvestigator
Kendra Turk-Kubo
University of California-Santa Cruz
principalInvestigator
Matthew M. Mills
Stanford University
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: Turk-Kubo, K., Mills, M. M., Arrigo, K. R. (2025) CTD profile data from NCDC research cruise on the R/V Kilo Moana (KM2206) in the Subtropical North Pacific from June 5th to July 5th, 2022. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-07-25 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/969967 [access date]
Methods and Sampling: <p>The NCD cruise steamed northwest of Oahu until ~35<sup>o</sup>N, then transited west along ~35<sup>o</sup>N to ~170<sup>o</sup>E. We then transited S. to ~11<sup>o</sup>N, targeting frontal zones between mesoscale features based on sea surface height&nbsp;anomalies and enhanced chlorophyll features, before returning to Oahu. We had daily CTD casts where we deployed the CTD (&lt;300 m). The CTD had sensors for measuring conductivity (calculated salinity), temperature, depth, beam transmission, beam attenuation, photosynthetically active radiation, and fluorescence.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2023498 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2023498
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2023278 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2023278
onGoing
Kevin R. Arrigo
Stanford University
650-723-3599
Department of Earth System Science/ Y2E2 Building Room 141
Stanford
CA
94305
USA
arrigo@stanford.edu
pointOfContact
Kendra Turk-Kubo
University of California-Santa Cruz
831.421.9293
Ocean Sciences Department UCSC Marine Microbiology Laboratory/Zehr Lab 1156 High Street
Santa Cruz
CA
95064
USA
kturk@ucsc.edu
pointOfContact
Matthew M. Mills
Stanford University
605-736-0688
Geophysics, Mitchell Bldg 397 Panama Mall, Room 324
Stanford
CA
94305-2215
USA
mmmills@stanford.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
CRUISE_ID
EXPOCODE
SECT_ID
STNNBR
CASTNO
DATE
TIME
ISO_DateTime_UTC
LATITUDE
LONGITUDE
DEPTH
CTDPRS
CTDPRS_FLAG_W
CTDTMP
CTDTMP2
CTDSAL
CTDSAL2
CTDOXY
CTDOXY2
FLUOR
BEAM_TRANS
BEAM_ATTEN
PAR
theme
None, User defined
Cruise identfier
EXPOCODE
site description
station
cast
date_gmt
time_gmt
ISO_DateTime_UTC
latitude
longitude
depth
water pressure
quality flag
water temperature at measurement depth
salinity
dissolved Oxygen
fluorescence
transmission
beam attenuation
PAR
featureType
BCO-DMO Standard Parameters
CTD Sea-Bird SBE 911plus
instrument
BCO-DMO Standard Instruments
KM2206
service
Deployment Activity
North Pacific Ocean
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Collaborative Research: Quantifying N2 fixation rates of noncyanobacterial diazotrophs and environmental controls on their activity
https://osprey.bco-dmo.org/project/815423
Collaborative Research: Quantifying N2 fixation rates of noncyanobacterial diazotrophs and environmental controls on their activity
<p><em>NSF Award Abstract:</em><br />
Nitrogen (N) is an important element in the ocean that limits the growth of the microscopic marine plants, phytoplankton. Estimates suggest N inputs and losses may not be balanced in the modern ocean, and thus an underestimation of N inputs may explain this imbalance. The conversion of gaseous N2 to biologically available N (N2 fixation) is the largest source of new N to the ocean. It is possible that the "missing" N can be explained by identifying new sources of N2 fixation. N2 fixation relies on a group of microorganisms, termed "diazotrophs", that utilize N2 for growth, unlike other marine microorganisms. Diazotrophs fall into two groups, cyanobacterial diazotrophs, which are able to derive energy through photosynthesis, and non-cyanobacterial diazotrophs (NCDs), which require a non-light-based energy source. Next to nothing is known about the ecology and biology of NCDs, except that they are ubiquitous in the ocean and contain the nitrogen fixing gene, but no direct measurements of their N2 fixation activity exist. Recent molecular advances for studying organisms at the single cell level now makes the measurement of N2 fixation by NCDs possible. This study is focused on determining whether marine NCDs are actually fixing N2 in the environment and understanding how their N2 fixation is modulated. Determining if NCD activity is an important missing N source in the global oceans has the potential to fill a critical gap in our understanding of the marine N cycle. This project supports early career STEM researchers including a graduate student and a postdoctoral scientist, as well as undergraduate students through several programs including UCSC's California Alliance for Minority Participation (CAMP).</p>
<p>Nitrogen fixation, the microbial process of converting N2 into biologically available ammonia, is an important source of N in the oceans. Historically, research has focused on the most conspicuous diazotrophs, such as Trichodesmium, but the discovery of unicellular cyanobacterial and non-cyanobacterial diazotrophs (NCDs) in the open ocean revealed a broader diversity than previously thought. Much of what is known about NCDs is restricted to presence, abundance estimates and transcriptional activity from gene surveys. NCDs are globally distributed throughout coastal and oligotrophic environments, however, it is not known whether NCDs supply N to support primary productivity. Measurements of marine NCDs are needed to determine if NCDs are actively fixing N2. This study is focused on measuring single cell NCD N2 fixation rates from a variety of taxa living in well-lit, oxygen-rich coastal and oligotrophic surface waters in the North Pacific and Arctic Oceans. The investigators are using a cultivation-independent technique called geneFISH to microscopically visualize and localize NCDs and measuring the incorporation of 15N2 into single cells using nanoscale secondary ion mass spectrometry. Beyond measuring in situ NCD N2 fixation rates, experiments are being conducted to determine environmental controls on single cell NCD N2 fixation (light, temperature, dissolved organic matter, dissolved inorganic N, and iron). Obtaining single cell NCD N2 fixation rates from a range of taxa, under different experimental conditions and in coastal and oligotrophic environments will provide information to link their presence to N2 fixation activity, determine the quantitative significance of NCDs in the marine environment, and set the stage for their inclusion in biogeochemical models.</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>
NCDN2FIX
largerWorkCitation
project
eng; USA
oceans
North Pacific Ocean
175.904
-158.426
11.8738
35.8302
2022-06-06
2022-07-04
Scripps Institution of Oceanography, Tropical and Subtropical Pacific, Chukchi and Beaufort Sea
0
BCO-DMO catalogue of parameters from CTD profile data from NCDC research cruise on the R/V Kilo Moana (KM2206) in the Subtropical North Pacific from June 5th to July 5th, 2022
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/983657.rdf
Name: CRUISE_ID
Units: unitless
Description: <p>Cruise identifier compatible with databases such as Rolling Deck to Repository (R2R)</p>
http://lod.bco-dmo.org/id/dataset-parameter/983658.rdf
Name: EXPOCODE
Units: unitless
Description: <p>The expedition code, a unique identifier for the cruise (ICES 4 character platform code then the cruise departure date in YYYYMDD format)</p>
http://lod.bco-dmo.org/id/dataset-parameter/983659.rdf
Name: SECT_ID
Units: unitless
Description: <p>Section name [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983660.rdf
Name: STNNBR
Units: unitless
Description: <p>Station number [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983661.rdf
Name: CASTNO
Units: unitless
Description: <p>Cast number [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983662.rdf
Name: DATE
Units: unitless
Description: <p>Cast date (GMT). [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983663.rdf
Name: TIME
Units: unitless
Description: <p>Cast time (GMT). [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983664.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>Cast DateTime with timezone (ISO 8601 format)</p>
http://lod.bco-dmo.org/id/dataset-parameter/983665.rdf
Name: LATITUDE
Units: unitless
Description: <p>Cast latitude [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983666.rdf
Name: LONGITUDE
Units: unitless
Description: <p>Cast longitude [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983667.rdf
Name: DEPTH
Units: unitless
Description: <p>Assumed to be max-depth of the cast [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983668.rdf
Name: CTDPRS
Units: decibars (DBAR)
Description: <p>1m binned water pressure, sensor: Digiquartz with TC [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983669.rdf
Name: CTDPRS_FLAG_W
Units: unitless
Description: <p>Data quality flag as defined by WOCE bottle codes (see "Data Processing" section)[WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983670.rdf
Name: CTDTMP
Units: degrees Celsius (degC)
Description: <p>1m binned water temperature in degrees C, sensor 1: Temperature [ITS-90, deg C] [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983671.rdf
Name: CTDTMP2
Units: degrees Celsius (degC)
Description: <p>1m binned water temperature in degrees C, sensor 2: Temperature [ITS-90, deg C] [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983672.rdf
Name: CTDSAL
Units: practical salinity units (PSU)
Description: <p>1m binned salinity in practical salinity unit [PSU] measured with conductivity [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983673.rdf
Name: CTDSAL2
Units: practical salinity units (PSU)
Description: <p>1m binned salinity measured with conductivity [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983674.rdf
Name: CTDOXY
Units: micromoles per kilogram (umol/kg)
Description: <p>1m binned oxygen concentration, sensor1: SBE 43 [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983675.rdf
Name: CTDOXY2
Units: micromoles per kilogram (umol/kg)
Description: <p>1m binned oxygen concentration, sensor2: SBE 43 [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983676.rdf
Name: FLUOR
Units: unitless
Description: <p>1m binned fluorescence (relative units, unitless), sensor- Seapoint fluorometer [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983677.rdf
Name: BEAM_TRANS
Units: percent (%)
Description: <p>1m binned percent beam transmission, sensor - Wet Labs C-Star [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983678.rdf
Name: BEAM_ATTEN
Units: per meter (unit 1/M)
Description: <p>1m binned beam attenuation, sensor- Wet Labs C-Star [WHP-Exchange format term]</p>
http://lod.bco-dmo.org/id/dataset-parameter/983679.rdf
Name: PAR
Units: micromoles of photons per meter squared per second (umol photons/m^2/sec)
Description: <p>1m binned photosynthetically active radiation, sensor Biospherical/Licor [WHP-Exchange format term]</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
https://osprey.bco-dmo.org/dataset/969967/data/download
download
onLine
dataset
<p>The NCD cruise steamed northwest of Oahu until ~35<sup>o</sup>N, then transited west along ~35<sup>o</sup>N to ~170<sup>o</sup>E. We then transited S. to ~11<sup>o</sup>N, targeting frontal zones between mesoscale features based on sea surface height&nbsp;anomalies and enhanced chlorophyll features, before returning to Oahu. We had daily CTD casts where we deployed the CTD (&lt;300 m). The CTD had sensors for measuring conductivity (calculated salinity), temperature, depth, beam transmission, beam attenuation, photosynthetically active radiation, and fluorescence.</p>
Specified by the Principal Investigator(s)
<p>Data processed with Seabird CTD processing software (1m-binned).&nbsp; Software Version Seasave V 7.26.7.107.&nbsp; These data were concatenated and provided as Data File&nbsp;969967_v1_ctd.csv in this dataset.&nbsp;&nbsp;<br />
<br />
The data is also available in the following formats (See Supplemental Files):<br />
<br />
* "km2206_binavg.cnv.zip" -&nbsp;The processed seabird .cnv file format. Example file:&nbsp;S18C02binavg.cnv contains data for station 18 cast 2.<br />
<br />
* "KM2206_ct1.zip" -&nbsp;WHP Exchange format (standardized, text-based format (CSV) for exchanging hydrographic data, specifically for CTD (Conductivity-Temperature-Depth) and bottle samples).&nbsp; Parameter explanation can be found here: https://exchange-format.readthedocs.io/en/latest/parameters.html (Barna et al., 2024). Example file:&nbsp;KM2206_s18c02_ct1.csv contains data for station 18 cast 2.&nbsp; All files include suffix _ct1.csv indicating data from one cast.</p>
<p><strong>WOCE Bottle Quality Codes</strong></p>
<p>1: Bottle information unavailable.</p>
<p>2: No problems noted.</p>
<p>3: Leaking.</p>
<p>4: Did not trip correctly.</p>
<p>5: Not reported.</p>
<p>(6): (Significant discrepancy in measured values between Gerard and Niskin bottles.)</p>
<p>(7): (Unknown problem.)</p>
<p>(8): (Pair did not trip correctly. Note that the Niskin bottle can trip at an unplanned depth while the Gerard trips correctly and vice versa.)</p>
<p>9: Samples not drawn from this bottle.</p>
Specified by the Principal Investigator(s)
* Data within .csv files by cast (see supplemental file "KM2206_ct1.zip") were concatenated into a combined table (attached to this dataset as 969967_v1_ctd.csv) with LATITUDE,LONGITUDE,DEPTH,STNNBR,CASTNO,SECT_ID,DATE,TIME, EXPOCODE fields extracted from header comments in each .csv cast file and added as individual columns in the combined data table. The last row of each cast table "END_DATA" was not included in the combined table. An additional column Cruise_ID was added with KM2206 (identifier as used at R2R https://www.rvdata.us/search/cruise/KM2206).
Missing Data Identifiers:
* In the BCO-DMO data system missing data identifiers are displayed according to the format of data you access. For example, in csv files it will be blank (null) values. In Matlab .mat files it will be NaN values. When viewing data online at BCO-DMO, the missing value will be shown as blank (null) values.
In all cast files, the header contained:
CTD = "20220704ESSSTNFRDGVD" which was added to the instrument information for this dataset's metadata.
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
PI Supplied Instrument Name: PI Supplied Instrument Description:SeaBird SBE-911+
CTD = "20220704ESSSTNFRDGVD" Instrument Name: CTD Sea-Bird SBE 911plus Instrument Short Name:CTD SBE 911plus Instrument Description: The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight 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/TOOL0058/
Cruise: KM2206
KM2206
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel
KM2206
Kendra Turk-Kubo
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel