In-situ Diurnal Sea Surface Temperature Variations and Near-Surface Thermal Structure in the Tropical Hot Event of the Indo-Pacific Warm Pool
Kawamura, H; Qin, HL; Ando, K; kamu@ocean.caos.tohoku.ac.jp
2008
发表期刊JOURNAL OF OCEANOGRAPHY
ISSN0916-8370
卷号64期号:6页码:847-857
摘要Diurnal Sea Surface Temperature (SST) variations and the near-surface thermal structure of the tropical hot event (HE) have been investigated using advanced in-situ equatorial observations with hourly temporal resolution. The information on the HE area defined by the satellite cloud-free SSTs is used to sample the in-situ observations. The in-situ SSTs sampled for the HE conditions show that a maximum (minimum) SST has a histogram mode at 30.8 degrees C (29.0 degrees C), and frequently appears at 15:00 (07:00) local time. The amplitude of the diurnal SST variation (DSST) is defined by the difference between the maximum and minimum SSTs. The mean DSST during HEs is greater than 0.5 degrees C, and has a maximum of about 0.75 degrees C at the HE peak. The time series of mean DSST gradually increases (rapidly decreases) before (after) the peak. The satellite SST has a systematic positive bias against the corresponding daytime SST measured by the Triangle Trans-Ocean buoy Network. This bias is enhanced under conditions of large in-situ DSST. One-dimensional numerical model simulation suggests that the systematic bias is caused by the sharp vertical temperature gradient in the surface layer of HE. The near-surface thermal structure is generated by conditions of high insolation and low wind speed, which is the typical HE condition.
部门归属[Kawamura, Hiroshi; Qin, Huiling] Tohoku Univ, Grad Sch Sci, Ctr Atmosphere & Ocean Studies, Sendai, Miyagi 9808578, Japan; [Ando, Kentaro] Japan Agcy Marine Earth Sci & Technol, Yokosuka, Kanagawa 2370061, Japan
关键词In-situ Diurnal Sst Variation Thermal Structure Hot Event
学科领域Oceanography
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收录类别sci
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/8425
专题海洋科技动态信息-印太暖池系统研究
通讯作者kamu@ocean.caos.tohoku.ac.jp
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Kawamura, H,Qin, HL,Ando, K,et al. In-situ Diurnal Sea Surface Temperature Variations and Near-Surface Thermal Structure in the Tropical Hot Event of the Indo-Pacific Warm Pool[J]. JOURNAL OF OCEANOGRAPHY,2008,64(6):847-857.
APA Kawamura, H,Qin, HL,Ando, K,&kamu@ocean.caos.tohoku.ac.jp.(2008).In-situ Diurnal Sea Surface Temperature Variations and Near-Surface Thermal Structure in the Tropical Hot Event of the Indo-Pacific Warm Pool.JOURNAL OF OCEANOGRAPHY,64(6),847-857.
MLA Kawamura, H,et al."In-situ Diurnal Sea Surface Temperature Variations and Near-Surface Thermal Structure in the Tropical Hot Event of the Indo-Pacific Warm Pool".JOURNAL OF OCEANOGRAPHY 64.6(2008):847-857.
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