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学科主题: Limnology; Oceanography
题名: Comparison of remote sensing data with in-situ wind observation during the development of the South China Sea monsoon
作者: Li, J ; Wang, DX ; Chen, J ; Yang, L
通讯作者: dxwang@scsio.ac.cn
关键词: wind data ; South China Sea (SCS) ; Xisha Islands ; in-situ observation ; QuikSCAT ; ASCAT ; AMSR-E
刊名: CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
发表日期: 2012
卷: 30, 期:6, 页:933-943
部门归属: [Li Jian; Wang Dongxiao; Chen Ju; Yang Lei] Chinese Acad Sci, State Key Lab Oceanog Trop, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China
项目归属: LTO
摘要: Wind measurements derived from QuikSCAT data were compared with those measured by anemometer on Yongxing Island in the South China Sea (SCS) for the period from April 2008 to November 2009. The comparison confirms that QuikSCAT estimates of wind speed and direction are generally accurate, except for the extremes of high wind speeds (> 13.8 m/s) and very low wind speeds (< 1.5 m/s) where direction is poorly predicted. In-situ observations show that the summer monsoon in the northern SCS starts between May 6 and June 1. From March 13, 2010 to August 31, 2010, comparisons of sea surface temperature (SST) and rainfall from AMSR-E with data from a buoy located at Xisha Islands, as well as wind measurements derived from ASCAT and observations from an automatic weather station show that QuikSCAT, ASCAT and AMSR-E data are good enough for research. It is feasible to optimize the usage of remote-sensing data if validated with in-situ measurements. Remarkable changes were observed in wind, barometric pressure, humidity, outgoing longwave radiation (OLR), air temperature, rainfall and SST during the monsoon onset. The eastward shift of western Pacific subtropical high and the southward movement of continental cold front preceded the monsoon onset in SCS. The starting dates of SCS summer monsoon indicated that the southwest monsoon starts in the Indochinese Peninsula and forms an eastward zonal belt, and then the belt bifurcates in the SCS, with one part moving northeastward into the tropical western North Pacific, and another southward into western Kalimantan. This largely determined the pattern of the SCS summer monsoon. Wavelet analysis of zonal wind and OLR at Xisha showed that intra-seasonal variability played an important role in the summer. This work improves the accuracy of the amplitude of intra-seasonal and synoptic variation obtained from remote-sensed data.
语种: 英语
WOS记录号: WOS:000311286500004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10053
Appears in Collections:热带海洋环境国家重点实验室(LTO)_期刊论文

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Recommended Citation:
Li, J; Wang, DX; Chen, J; Yang, L.Comparison of remote sensing data with in-situ wind observation during the development of the South China Sea monsoon,CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2012,30(6):933-943
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