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学科主题: Meteorology & Atmospheric Sciences
题名: Atmosphere-ocean conditions jointly guide convection of the Boreal Summer Intraseasonal Oscillation: Satellite observations
作者: Yang, B ; Fu, XH ; Wang, B
通讯作者: yangbo@hawaii.edu
刊名: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
发表日期: 2008-01-01
卷: 113, 期:D11, 页:#NAME
收录类别: sci
部门归属: [Yang, Bo; Fu, Xiouhua; Wang, Bin] Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA
摘要: The water-vapor and air-temperature profiles from the Atmospheric Infrared Sounder (AIRS), in combination with surface wind from Quick Scatterometer (QuikSCAT) and rainfall and sea surface temperature (SST) from Tropical Rainfall Measurement Mission (TRMM) Microwave Imager (TMI), are used to document surface conditions and vertical moist thermodynamic structures of the 2003-2006 Boreal Summer Intraseasonal Oscillation (BSISO) over the Indo-Pacific warm pool. The composite based on Wheeler and Hendon's intraseasonal oscillation index reveals that Convective Available Potential Energy (CAPE), SST, and surface convergence lead convection in both northward and eastward directions. The preconditioning of CAPE is much earlier than that of SST, implying that the atmosphere internal processes precondition CAPE. On the other hand, the ocean positively feeds back to the atmosphere from bottom up, forming a smooth transition from boundary layer moistening, shallow convection at lower or middle level, to the deep convection all through the troposphere. The preconditioning of the boundary layer moist (dry) anomalies to the subsequent positive (negative) rainfall maximum is as far as 60-90 degrees in longitude (15 degrees in latitude) and quarter-to-half cycle in time. In contrast, this boundary layer preconditioning is virtually undetected from conventional NCEP reanalysis. Finally, the implications of these new findings on the frictional "convective interaction with dynamics'' (CID) theory of intraseasonal oscillation are also discussed.
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/8431
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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Yang, B; Fu, XH; Wang, B.Atmosphere-ocean conditions jointly guide convection of the Boreal Summer Intraseasonal Oscillation: Satellite observations,JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2008,113(D11):#NAME
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文件名: Atmosphere-ocean conditions jointly guide convection of the Boreal Summer Intraseasonal Oscillation Satellite observations.pdf
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