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KPDC, Korea Polar Data Center

Korea Polar Data Center Scientific observations and results from Antarctica shall
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O2/Ar - NCP of surface water measured using an equilibrator inlet mass spectrometer (2017.08 & 2020.08)

O2/Ar in seawater, pumped from the intake at 7 m below sea level, was measured using an equilibrator inlet mass spectrometer. The mass spectrometer measured a series of dissolved gases including O2 and Ar every 10 seconds. The data contain ion currents of those gases and total pressure in the mass spectrometer. To evaluate the magnitude of biological pump and its influencing factors, we estimated the net community production (NCP) of the northern Chukchi Sea in August 2017 and 2020. Net community production (NCP), defined as the difference between autotrophic photosynthesis and (autrophic and heterotrophic) respiration, produces O2 proportional to the amount of net carbon. By measuring chemically and biologically inert Ar together with O2, it is possible to isolate O2 variation by physical processes (e.g., air temperature and pressure change and mixing of water masses) and deduce O2 variation by biological processes. To determine the net community (oxygen) production underway, we measured continuous O2/ Ar measurement system using an equilibrator inlet mass spectrometer.

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Entry ID
DOI
https://dx.doi.org/doi:10.22663/KOPRI-KPDC-00002163.1
Science Keyword
ISO Topic
Oceans
Environment
Platform
In Situ Ocean-based Platforms > R/V ARAON
Instrument
ISOTOPIC RATIO MASS SPECTROMETER (IRMS)
Personnel
  • Keyhong Park (keyhongpark@kopri.re.kr)
  • Doshik Hahm (hahm@pusan.ac.kr), Pusan National University
Project
Research period
2017-08-10 ~ 2017-08-24
2020-08-07 ~ 2020-08-31
Create/Update Date
2022-11-10 / 2022-11-10
Location
OCEAN > ARCTIC OCEAN > CHUKCHI SEA > Nothern Chukchi Sea
Citation
The data(KOPRI-KPDC-00002163) used in this work was provided by the Korea Polar Research Institute.
Spatial Coverage

POLYGON

  • lat:82.000000, lon:165.000000
  • lat:72.000000, lon:165.000000
  • lat:72.000000, lon:-155.000000
  • lat:82.000000, lon:-155.000000

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Raw Data
File Size 2.93 Mb for 2 items
Category File Name Description Size Status
Result ARA08B_2017_Underway_data.csv Underway data obtained in 2017(ARA08B). The data include Longitude, Latitudes, SST, SSS, DO2/Ar, Sea Ice Concentration, and NCP. 143.68 Kb Request required
Result ARA11B_2020_Underway_data.csv Underway data obtained in 2020(ARA11B). The data include Longitude, Latitudes, SST, SSS, DO2/Ar, Sea Ice Concentration, and NCP. 2.79 Mb Request required