期刊
TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
卷 24, 期 5, 页码 899-910出版社
CHINESE GEOSCIENCE UNION
DOI: 10.3319/TAO.2013.05.23.01(Oc)
关键词
Typhoon; Hurricane; Sea surface temperature; Chlorophyll; East China Sea; POC flux
资金
- Top University Program and the National Science Council of Taiwan [NSC101-2116-M-110-001, NSC101-2611-M-110-015-MY3, NSC100-2119-M-110-003]
Severe tropical storms play an important role in triggering phytoplankton blooms, yet direct field observation of evidence of the effects of a typhoon is very rare. Sea surface temperature (SST), nitrate concentration, chlorophyll a (chl a) concentration, and particulate organic carbon (POC) flux were measured before and shortly after Typhoon Jangmi which affected the southern East China Sea (SECS) on September 28 similar to 29, 2008. In situ SST (27.5 similar to 28.0 degrees C) on September 19 similar to 21, decreased to similar to 24.0 degrees C (October 3 similar to 6) in the SECS 4 similar to 7 days after the passage of Typhoon Jangmi. In situ nitrate and chl a concentrations 7-days (on October 6) after the passage of Jangmi were 1.9 mu M and 1.61 mg m(-3), respectively, much higher than those (nitrate: 0.3 mu M and chl a: 0.73 mg m(-3)) concentrations before the typhoon (September 21). The enhanced chl a concentration is thus caused by a nutrient supply via vertical mixing or upwelling in the euphotic zone. The POC flux 7-days after Jangmi's passage was 552 +/- 28 mg-C m(-2) d(-1), a similar to 2.5-fold increases before the typhoon (224 +/- 33 mg-C m(-2) d(-1), on September 21). Our results suggest that typhoons indeed can stimulate efficient POC export out of the euphotic zone, while it is still poorly understood with regard to the total effects of a typhoon on nutrient dynamics and detailed carbon sequestration due to sampling difficulty. Therefore, successional sea-going observations ought to be conducted in the affected area after the passage of typhoons.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据