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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41504

Title: Enhancement of particulate organic carbon export flux induced by atmospheric forcing in the subtropical oligotrophic northwest Pacific Ocean
Authors: Chin-Chang Hung, , Gwo-Ching Gong, Wang-Chen Chung, Wei-Ting Kuo, Fu-Chen Lin
Contributors: 國立臺灣海洋大學:海洋環境化學與生態研究所
Keywords: POC;Export flux;Asian dust storm;Sediment trap;Pacific Ocean
Date: 2009-01-30
Issue Date: 2017-02-23T02:36:25Z
Publisher: Marine Chemistry
Abstract: Abstract:The effects of extreme atmospheric forcing on the export flux of particulate organic carbon (POC) in the warm oligotrophic nitrogen-limited northwest Pacific Ocean were examined in 2007 during the spring Asian dust storm period. Several strong northeast monsoon events (maximum sustained wind speeds approaching 16.7 m s− 1, and gusts up to 19.0 m s− 1) accompanied by dust storms occurred during a 1-month period. The cold stormy events decreased surface water temperature and induced strong wind-driven vertical mixing of the water column, resulting in nutrient entrainment into the mixed layer from subsurface waters. As a result, the export flux of POC ranged from 49 to 98 (average value = 71 ± 16) mg m− 2 day− 1, approximately 2–3 times greater than average values in other seasons. As dry and wet deposition of nitrogen attributable to Asian dust storm events does not account for the associated increases in POC stocks in this N-limited oligotrophic oceanic region, the enhancement of POC flux must have been caused by nutrient entrainment from subsurface waters because of the high winds accompanying the dust storm events.
Relation: 113(1-2), pp.19-24
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41504
Appears in Collections:[海洋環境與生態研究所] 期刊論文

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