Spatial variability of surface fCO2 in the western North Pacific during summer 2007 SCOPUS KCI

Title
Spatial variability of surface fCO2 in the western North Pacific during summer 2007
Author(s)
Choi, S.-H.; Kim, D.; Kim, K.-H.; Min, H.-S.
KIOST Author(s)
Choi, Sang-Hwa(최상화)Kim, Dongseon(김동선)
Publication Year
2008
Abstract
In order to study spatial variabilities and major controlling factors, we measured fugacity of CO2 (fCO2), temperature, salinity and nutrients in surface waters of the North Pacific (7°30′∼33°15′N, 123°56′E∼164°24′W) between September∼October 2007. The North Pacific and the marginal sea were distinguished by fCO2 distribution as well as unique characteristics of temperature and salinity. There was a distinct diurnal SST variation in the tropical North Pacific area, and surface fCO2 coincidently showed diurnal variation. In the North Pacific area, surface fCO2 was mainly controlled by temperature, while in the marginal sea area it was primarily dependent on alkalinity and dissolved inorganic carbon concentrations. Air-sea CO2 flux showed a large spatial variation, with a range of -6.10∼5.06 mmol m-2 day-1. The center of subtropical gyre of North Pacific acted as a source of CO2 (3.09±0.95 mmol m-2 day-1). Tropical western North Pacific (i.e. the 'warm pool' area and the subtropical western North Pacific) acted as weak sources of CO2 (1.07±1.20 mmol m-2 day-1 and 0.50±0.53 mmol m-2 day-1 respectively). In the marginal sea, however, the flux was estimated to be -0.68±1.17 mmol m-2 day-1, indicating that this area acted as a sink for CO2.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4580
DOI
10.4217/OPR.2008.30.3.335
Bibliographic Citation
Ocean and Polar Research, v.30, no.3, pp.335 - 345, 2008
Publisher
Korea Ocean Research and Development Institute
Subject
alkalinity; carbon dioxide; carbon flux; dissolved inorganic carbon; diurnal variation; fugacity; marginal sea; salinity; sea surface temperature; spatial variation; warm pool; Pacific Ocean; Pacific Ocean (North)
Keywords
Air-sea CO2 flux; Surface fCO2; Western North Pacific
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Chemical oceanography,Ocean carbon cycle,화학해양학,해양탄소순환

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