| Gong Daoyi,Wang Shaowu. 1999. Response of global subtropical highs to the equatorial eastern Pacific SST anomaly. Acta Oceanologica Sinica, (2):203－214 |
| Response of global subtropical highs to the equatorial eastern Pacific SST anomaly |
| Response of global subtropical highs to the equatorial eastern Pacific SST anomaly |
| Received:August 31, 1997 Revised:March 30, 1998 |
| DOI： |
| Key words:Global subtropical highs equatorial eastern Pacific SST |
| 中文关键词: Global subtropical highs equatorial eastern Pacific SST |
| 基金项目:This project was supported by National Natural Science Foundation of China (49635190). |
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| Abstract: |
| Based on the reanalysis data of global SOOhPa gcopotential height (NCEP NCAR CDAS-1) and tropical Pacific SSTs, the characteristics of global subtropical highs and their response to tropical eastern Pacific SST are investigated.Results show that global subtropical highs respond to SST consistently.Subtropical high intensity correlates to the 3 months leading SST maximally.The relationship between SST and SOOhPa height stands out in low latitudes.The time for 500hPa height reaching maximum correlation to SST is 2 months later in latitude of 10 degree and 9 months in latitude of 30 degree than equatorial wne.And the response of atmospheric circulation over extratropic performs as wave train, and the response is more significant in the condition of warmer SST.Persistence of SSTs and subtropica highs changes obviously from season to season.Minimum persistence of subtropical highs in September and October may relate to the low persistence of SSTs in August and September. |
| 中文摘要: |
| Based on the reanalysis data of global SOOhPa gcopotential height (NCEP NCAR CDAS-1) and tropical Pacific SSTs, the characteristics of global subtropical highs and their response to tropical eastern Pacific SST are investigated.Results show that global subtropical highs respond to SST consistently.Subtropical high intensity correlates to the 3 months leading SST maximally.The relationship between SST and SOOhPa height stands out in low latitudes.The time for 500hPa height reaching maximum correlation to SST is 2 months later in latitude of 10 degree and 9 months in latitude of 30 degree than equatorial wne.And the response of atmospheric circulation over extratropic performs as wave train, and the response is more significant in the condition of warmer SST.Persistence of SSTs and subtropica highs changes obviously from season to season.Minimum persistence of subtropical highs in September and October may relate to the low persistence of SSTs in August and September. |
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