동중국해에서 표층 pCO2 분포의 계절변화

Title
동중국해에서 표층 pCO2 분포의 계절변화
Alternative Title
Seasonal change in surface pCO2 distribution in the East China Sea
Author(s)
심정희; 강영철; 김동선; 이재학; 김철호
KIOST Author(s)
Kim, Dong Seon(김동선)Lee, Jae Hak(이재학)
Publication Year
2004-10-21
Abstract
Surface pCO2, temperature, salinity, nutrients, and chlorophyll a were measured in the East China Sea (31~34 °N, 124~128 °E) from August 26 to September 2, 2003, and from April 28 to May 7, 2004. The high-salinity Tsushima Warm Current was observed in the east of the survey area in both years. Consequently, temperature and salinity showed similar distributions in the summer of 2003 and the spring of 2004. By contrast, the surface pCO2 changed dramatically from summer to spring across the shelf front, where the Tsushima Warm Current meets Yellow Sea water. High pCO2 (> 380 μatm) in the east, and low pCO2 (< 280 μatm) in the west, off China, were observed in the summer of 2003, and the pattern was reversed in the spring of 2004. Surface pCO2 was positively correlated with temperature in the east of the shelf front in both summer and spring (r=0.82 and 0.74, respectively). Therefore, east of the front, temperature is thought to control surface pCO2 primarily, while west of the front it is controlled by many factors, such as fresh water discharge from Yangtze River in summer, water stability, primary productivity, and organic decomposition. The highly elevated pCO2 west of the front in spring despite the low temperature and high chlorophyll concentration might be the result of surface water mixing with CO2-rich bottom waters in spring or massive fresh water discharge from the Yangtze River in summer.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/31715
Bibliographic Citation
North Pacific Marine Science Organization Thirteenth Annual Meeting, pp.109 - 110, 2004
Publisher
PICES (North Pacific Marine Science Organization)
Type
Conference
Language
English
Publisher
PICES (North Pacific Marine Science Organization)
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