http://lod.bco-dmo.org/id/dataset/808903
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
2020-04-10
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Mixed-layer averaged O2 and optically-based POC from Profiling Floats in the North Pacific from R/V Kilo Moana from June to September 2017
2020-04-10
publication
2020-04-10
revision
BCO-DMO Linked Data URI
2020-04-10
creation
http://lod.bco-dmo.org/id/dataset/808903
Angelicque E. White
Oregon State University
principalInvestigator
Paul Quay
University of Washington
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: White, A. E., Quay, P. (2020) Mixed-layer averaged O2 and optically-based POC from Profiling Floats in the North Pacific from R/V Kilo Moana from June to September 2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). Version Date 2020-04-10 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/808903 [access date]
Mixed-layer averaged O2 and optically-based POC from Profiling Floats Dataset Description: <p>The cruise (KM1713) transited from Seward, AK to Honolulu, HI from 3-26 September 2017 onboard the R/V Kilo Moana. Six extended stations (Stn), three in subpolar waters (Stn 1 at 55°N, Stn 2 at 50°N, and Stn 3 at 46°N), one in the transition zone between subpolar and subtropical waters (Stn 4 at 42°N), and two in the subtropical gyre (Stn 5 at 34°N, and Stn 6 at 24°N) were occupied for 2-3 day periods during which continuous measurements of conductivity, temperature, O2, O2/Ar and beam attenuation were measured continuously on surface seawater supplied via the ships’ intake line and using CTD profiles of conductivity, temperature, pressure, oxygen, and the particulate beam attenuation coefficient conducted at ~2-hr intervals. An autonomous profiling float was deployed for ~ 2 days at four stations, retrieving CTD and oxygen profiles at approximately 3-hour intervals. Another float with same mission design was deployed near station ALOHA (22.45° N, 158° W) during July 2017 to provide mixed-layer averaged O2 near station 6. When available, the ship followed the trajectory of the profiling float, yielding a near-Lagrangian sampling strategy with the aim to minimize horizontal mixing effects.</p> Methods and Sampling: <p><strong>Mixed-layer averaged O2 and optically-based POC from Profiling Floats</strong></p>
<p>A profiling float (#12592; APEX, Webb Research Inc., Falmouth, USA) equipped with an oxygen optode sensor (Model 4330, Aanderaa Data Instruments, Bergen, Norway) as well as a SBE<span style="font-family:times">‐</span>41 CTD instrument (Sea<span style="font-family:times">‐</span>Bird Electronics Inc., Bellevue/WA, USA) was deployed at stations 2, 3, 4, and 5 for ~2 days. The profiling float was recovered by small boat operations at the end of each station. The mission was programmed to allow float to surface every 3 hours and profile from 200 m depth to surface (i.e. 8 profiles per day). At each surfacing event, the optode collected measurements in air to allow post-calibration.</p>
<p>Raw float oxygen optode data were corrected for pressure and salinity following Uchida et al. [2008] and Garcia and Gordon [1992], as outlined in the Aanderaa manual. Float optode oxygen data were calibrated using optode air measurements taken at the time of each float surfacing following methods described in Bushinsky et al. [2016]. Briefly, air calibration relies on the estimate of a gain factor G, such that O<sub>2_corrected</sub> = G×O<sub>2_raw</sub>. In practice, G is an average gain factor for each float profile determined from the ratio of the expected partial pressure of oxygen in air (pO<sub>2</sub>) to the partial pressure of oxygen in air measured by the optode (pO<sub>2_optode</sub>), i.e. g<sub>i</sub>=pO<sub>2</sub>/pO<sub>2_optode</sub>. Optode air measurements were first filtered to remove outliers (e.g. measurements taken underwater or with high variance), and mean values per surfacing were recorded. pO<sub>2_optode</sub> was calculated from optode phase and temperature as in the Aanderaa Manual. Atmospheric pO<sub>2</sub> was calculated as in Bushinsky et al. [2016] using float-derived water vapor pressure estimates (pH<sub>2</sub>0) at the time of each float surfacing (Aanderaa Manual) as well as the 6-h NOAA NCEP atmospheric pressure and surface relative humidity data interpolated to the time and location of each float surfacing (<a href="https://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.surface.html"><span style="color:rgb(5, 99, 193)">https://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.surface.html</span></a>). An average G value of 1.24 was then calculated based on the g<sub>i</sub> estimates from each surfacing at each station, and applied to all optode profiles. Float mixed-layer depth was calculated using the 0.125 kg m<span style="font-family:courier"><sup>−</sup></span><span style="font-family:times"><sup>3</sup></span> potential density change threshold relative to 10 m depth.</p>
<p>Float mixed-layer averaged gain-corrected O<sub>2 </sub>concentrations were further calibrated by multiplying mean Winkler concentrations per station to float percent deviation estimates at each station (Eq. 1). Similar procedures were applied to optode data from an identical profiling float (#12593) with same mission design deployed near station ALOHA (22.45° N, 158° W) on June 29 2017 and recovered at the end of the cruise near station 6. Exceptions included that only air calibrations were carried since no simultaneous Winkler measurements were available. Importantly, the large number of daily profiles and relative shallow depths reached by the float led to obvious biofouling of the oxygen sensor after ~ 30 days at sea. Thus, only data from the month of July 2017 are made available.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1849012 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1849012
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1536121 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1536121
onGoing
Angelicque E. White
Oregon State University
808-956-6220
1950 East West Rd.
Honolulu
HI
USA
aewhite@hawaii.edu
pointOfContact
Paul Quay
University of Washington
206-685-8061
University of Washington School of Oceanography MS 355351
Seattle
WA
98195-7940
USA
pdquay@uw.edu
pointOfContact
asNeeded
Unknown
year
decimal_day_of_year
ISO_DateTime_UTC
lon
lat
sta
float_number
MLD
salinity
temp
oxygen optode sensor (Model 4330, Aanderaa Data Instruments, Bergen, Norway)
SBE‐41 CTD
theme
None, User defined
year
year day (Day of Year, or day of year and decimal time)
ISO_DateTime_UTC
longitude
latitude
station
No BCO-DMO term
mixed layer depth
salinity
water temperature at measurement depth
featureType
BCO-DMO Standard Parameters
Aanderaa Oxygen Optodes
CTD Sea-Bird 41
instrument
BCO-DMO Standard Instruments
KM1713
service
Deployment Activity
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: Measuring Ocean Productivity from the Diurnal Change in Oxygen and Carbon
https://osprey.bco-dmo.org/project/792396
Collaborative Research: Measuring Ocean Productivity from the Diurnal Change in Oxygen and Carbon
<p>NSF Award Abstract:</p>
<p>The rate of primary production in the ocean is fundamental to the ocean's food web and the movement of carbon from surface waters to the deep ocean, known as the biological pump. Yet spatial and temporal variations in primary productivity are poorly known because the effort required for the current method of measuring primary productivity is significant, limiting its application, and the method has biases that are difficult to quantify. Using a novel combination of approaches, the investigators will estimate daily primary productivity in the ocean at three ecologically distinct sites. The research will significantly improve understanding of primary productivity variations and their impact on the ocean's biological pump, which will benefit the broader ocean community involved in carbon cycle modeling and benefit society via the impact of ocean primary productivity on atmospheric carbon dioxide uptake and future climate change. The research results will be incorporated into both undergraduate and graduate course curricula and outreach talks at the two institutions. There will be active undergraduate student participation in the project at both Oregon State University and the University of Washington.</p>
<p>Within the last decade, an in-situ primary productivity method based on measuring the isotopic composition of dissolved oxygen (O2) gas has gained traction within the oceanographic community because it yields a primary production estimate from a simple water sample collection. This method has yielded basin-wide snapshots of primary productivity based on underway sampling of the surface ocean by ships of opportunity. However, accurate estimates of oxygen/particulate organic carbon (O2/POC) produced during primary productivity are needed to convert oxygen-based primary production rates to carbon production. In this project, daily in-situ rates of primary production in the surface ocean at three ocean sites will be estimated from continuous measurements of diurnal cycles in the oxygen/argon dissolved gas ratio and POC and compared to simultaneous in vitro primary productivity estimates. Variations in the O2/POC produced during primary production will be determined. Autonomous float-based estimates of primary production based on measurements of diurnal cycles in O2 and POC will be validated using ship based measurements. Estimates of primary production based on autonomous measurements resulting from this research have the potential to revolutionize our knowledge on the spatial and temporal variations in primary productivity in the ocean.</p>
ProdChangeO2Carb
largerWorkCitation
project
eng; USA
oceans
-160.072
-144.968
22.609
49.976
2017-06-23
2017-09-22
North Pacific Ocean, from ~ 22 N to ~ 55 N, surface and mixed-layer
0
BCO-DMO catalogue of parameters from Mixed-layer averaged O2 and optically-based POC from Profiling Floats in the North Pacific from R/V Kilo Moana from June to September 2017
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/808917.rdf
Name: year
Units: unitless
Description: <p>year of observation</p>
http://lod.bco-dmo.org/id/dataset-parameter/808918.rdf
Name: decimal_day_of_year
Units: unitless
Description: <p>decimal day of the year in UTC</p>
http://lod.bco-dmo.org/id/dataset-parameter/808919.rdf
Name: ISO_DateTime_UTC
Units: yyyy-MM-dd'T'HH:mm:ss'Z'
Description: <p>Date and time formatted according to ISO8601 in UTC</p>
http://lod.bco-dmo.org/id/dataset-parameter/808920.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude with negative values indicating West</p>
http://lod.bco-dmo.org/id/dataset-parameter/808921.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude with positive values indicating North</p>
http://lod.bco-dmo.org/id/dataset-parameter/808922.rdf
Name: sta
Units: unitless
Description: <p>station number</p>
http://lod.bco-dmo.org/id/dataset-parameter/808923.rdf
Name: float_number
Units: unitless
Description: <p>float number</p>
http://lod.bco-dmo.org/id/dataset-parameter/808924.rdf
Name: MLD
Units: meters (m)
Description: <p>Mixed Layer Depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/808925.rdf
Name: salinity
Units: psu
Description: <p>mixed-layer averaged salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/808926.rdf
Name: temp
Units: degrees Celsius (C)
Description: <p>mixed-layer averaged temperature</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/808903/data/download
download
onLine
dataset
<p><strong>Mixed-layer averaged O2 and optically-based POC from Profiling Floats</strong></p>
<p>A profiling float (#12592; APEX, Webb Research Inc., Falmouth, USA) equipped with an oxygen optode sensor (Model 4330, Aanderaa Data Instruments, Bergen, Norway) as well as a SBE<span style="font-family:times">‐</span>41 CTD instrument (Sea<span style="font-family:times">‐</span>Bird Electronics Inc., Bellevue/WA, USA) was deployed at stations 2, 3, 4, and 5 for ~2 days. The profiling float was recovered by small boat operations at the end of each station. The mission was programmed to allow float to surface every 3 hours and profile from 200 m depth to surface (i.e. 8 profiles per day). At each surfacing event, the optode collected measurements in air to allow post-calibration.</p>
<p>Raw float oxygen optode data were corrected for pressure and salinity following Uchida et al. [2008] and Garcia and Gordon [1992], as outlined in the Aanderaa manual. Float optode oxygen data were calibrated using optode air measurements taken at the time of each float surfacing following methods described in Bushinsky et al. [2016]. Briefly, air calibration relies on the estimate of a gain factor G, such that O<sub>2_corrected</sub> = G×O<sub>2_raw</sub>. In practice, G is an average gain factor for each float profile determined from the ratio of the expected partial pressure of oxygen in air (pO<sub>2</sub>) to the partial pressure of oxygen in air measured by the optode (pO<sub>2_optode</sub>), i.e. g<sub>i</sub>=pO<sub>2</sub>/pO<sub>2_optode</sub>. Optode air measurements were first filtered to remove outliers (e.g. measurements taken underwater or with high variance), and mean values per surfacing were recorded. pO<sub>2_optode</sub> was calculated from optode phase and temperature as in the Aanderaa Manual. Atmospheric pO<sub>2</sub> was calculated as in Bushinsky et al. [2016] using float-derived water vapor pressure estimates (pH<sub>2</sub>0) at the time of each float surfacing (Aanderaa Manual) as well as the 6-h NOAA NCEP atmospheric pressure and surface relative humidity data interpolated to the time and location of each float surfacing (<a href="https://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.surface.html"><span style="color:rgb(5, 99, 193)">https://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.surface.html</span></a>). An average G value of 1.24 was then calculated based on the g<sub>i</sub> estimates from each surfacing at each station, and applied to all optode profiles. Float mixed-layer depth was calculated using the 0.125 kg m<span style="font-family:courier"><sup>−</sup></span><span style="font-family:times"><sup>3</sup></span> potential density change threshold relative to 10 m depth.</p>
<p>Float mixed-layer averaged gain-corrected O<sub>2 </sub>concentrations were further calibrated by multiplying mean Winkler concentrations per station to float percent deviation estimates at each station (Eq. 1). Similar procedures were applied to optode data from an identical profiling float (#12593) with same mission design deployed near station ALOHA (22.45° N, 158° W) on June 29 2017 and recovered at the end of the cruise near station 6. Exceptions included that only air calibrations were carried since no simultaneous Winkler measurements were available. Importantly, the large number of daily profiles and relative shallow depths reached by the float led to obvious biofouling of the oxygen sensor after ~ 30 days at sea. Thus, only data from the month of July 2017 are made available.</p>
Specified by the Principal Investigator(s)
<p>BCO-DMO Processing Notes:<br />
-&nbsp;added conventional header with dataset name, PI name, version date<br />
- modified parameter names to conform with BCO-DMO naming conventions<br />
-&nbsp;added ISO Date format generated from date and time values</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
oxygen optode sensor (Model 4330, Aanderaa Data Instruments, Bergen, Norway)
oxygen optode sensor (Model 4330, Aanderaa Data Instruments, Bergen, Norway)
PI Supplied Instrument Name: oxygen optode sensor (Model 4330, Aanderaa Data Instruments, Bergen, Norway) PI Supplied Instrument Description:APEX Profiling Floats:
#12592 and # 12593 (APEX, Webb Research Inc., Falmouth, USA) equipped with an oxygen optode sensor (Model 4330, Aanderaa Data Instruments, Bergen, Norway). Instrument Name: Aanderaa Oxygen Optodes Instrument Short Name:AOO Instrument Description: Aanderaa Oxygen Optodes are instrument for monitoring oxygen in the environment. For instrument information see the Aanderaa Oxygen Optodes Product Brochure. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/351/
SBE‐41 CTD
SBE‐41 CTD
PI Supplied Instrument Name: SBE‐41 CTD PI Supplied Instrument Description:APEX Profiling Floats:
#12592 and # 12593 (APEX, Webb Research Inc., Falmouth, USA) equipped with a SBE‐41 CTD instrument (Sea‐Bird Electronics Inc., Bellevue/WA, USA) Instrument Name: CTD Sea-Bird 41 Instrument Short Name:CTD SBE 41 Instrument Description: The Sea-Bird SBE 41 CTD module was originally developed in 1997 for integration with sub-surface oceanographic floats. It uses MicroCAT Temperature, Conductivity, and Pressure sensors. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/130/
Cruise: KM1713
KM1713
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel
KM1713
Paul Quay
University of Washington
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel