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学科主题: Oceanography
题名: Detection of hot event in the equatorial Indo-Pacific warm pool using advanced satellite sea surface temperature, solar radiation, and wind speed
作者: Qin, H ; Kawamura, H ; Kawai, Y
刊名: JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
发表日期: 2007-01-01
卷: 112, 期:C7, 页:#NAME
收录类别: sci
部门归属: Tohoku Univ, Grad Sch Sci, Ctr Atmospher & Ocean Studies, Sendai, Miyagi 9808578, Japan; Japan Agcy Marine Earth Sci & technol, Inst Observ Res Global Change, Yokosuka, Kanagawa, Japan
摘要: Using advance satellite-derived sea surface temperature (SST), solar radiation and wind speed products, we investigate hot events (HEs) associated with very high SST of around 30 degrees C. Amplitude of the SST diurnal variation (DSST) is obtained by an empirical formula with the downward surface shortwave radiation (DSSR) and the wind speed. The HE is defined as a connected region with SST > the time-dependent SST threshold of about 30 degrees C having a minimum areal size greater than 3 x 10(6) km(2) and lasting for a period longer than 10 days. Thirty-one hot events were detected from 1993 to 2003 in and around the equatorial Indo-Pacific warm pool. The HE precursor is increase of an area with SST > the time-dependent SST threshold, and the HE starts when the areal size exceeds the areal threshold. It keeps the very high SST for a while, and then its SST decreases with decrease of the HE area toward its ending phase. The HE area and the high-DSST area correspond with each other on timescales of daily and the whole one event period. In the HE period, a clear-sky and low-wind condition becomes the reason for large DSST appearance. Through statistics of the detected 31 HEs, it is indicated that the mean HE period, the mean areal size, and the means of the regional HE areal averaged SST are 24.2 days, 1.57 x 10(7) km(2), and 0.25 degrees C above the time-dependent SST threshold, respectively. The HE area shifts with season though they stay within/around the SST contour of 28 degrees C in the Indo-Pacific oceans.
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/8445
Appears in Collections:海洋科技动态信息-印太暖池系统研究_期刊论文

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Recommended Citation:
Qin, H; Kawamura, H; Kawai, Y.Detection of hot event in the equatorial Indo-Pacific warm pool using advanced satellite sea surface temperature, solar radiation, and wind speed,JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2007,112(C7):#NAME
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文件名: Detection of hot event in the equatorial Indo-Pacific warm pool using advanced satellite sea surface temperature, solar radiation, and wind speed.pdf
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