Influence of strong El Nino on sinking particle fluxes in the 10N thermocline ridge of the northeastern equatorial Pacific

Title
Influence of strong El Nino on sinking particle fluxes in the 10N thermocline ridge of the northeastern equatorial Pacific
Author(s)
김형직; 형기성; 유찬민; 김부근
KIOST Author(s)
Kim, Hyung Jeek(김형직)Hyeong, Kiseong(형기성)Yoo, Chan Min(유찬민)
Publication Year
2011-12-05
Abstract
The influence of ENSO (El Niño -Southern Oscillation) variability on sinking particle fluxes was evaluated from time series sediment trap experiments carried out for 8 years from July 1997 – May 1998 and from July 2003 – June 2010 at a station (10°30′N, 131°20´W) located in the 10°N thermocline ridge (9°-13°N, 105°-140°W) of the northeastern equatorial Pacific. During the monitoring period, two strong El Niño events were observed from July 1997 to May 1998 (1997/98 El Niño) and from June 2009 to April 2010 (2009/10 El Niño) that occurred as a cold-tong (CT)-type and warm-pool (WP)-type El Niño, respectively, with SST anomalies centered in eastern equatorial and central equatorial Pacific. Regardless of El Niño types, both events caused almost 3-fold increases of total mass fluxes compared to the average total mass flues of non-ENSO period, which is completely opposite to the general trend observed in the central and eastern equatorial Pacific region. In detail, however, the 1997/98 El Niño event resulted in the most marked increases of biogenic silica and organic carbon fluxes to two to three times higher than non-ENSO level, while the 2009/10 El Niño was accompanied by a significant increase of CaCO3 flux with minor increases in biogenic silica and organic carbon fluxes. The observed meteorological and ocean gy
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/27994
Bibliographic Citation
AGU fall meeting 2011, pp.1, 2011
Publisher
American
Type
Conference
Language
English
Publisher
American
Related Researcher
Research Interests

Particle flux,Carbon cycle,Climate Change,입자 플럭스,탄소순환,기후변화

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