| 全球变暖背景下西太平洋副热带高压变化的探讨 |
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| 引用本文： | 李扬,张娇艳,向波.全球变暖背景下西太平洋副热带高压变化的探讨[J].高原山地气象研究,2019,39(2):8-13. |
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| 作者姓名： | 李扬 张娇艳 向波 |
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| 作者单位： | 1. 贵州省贵阳市气象局, 贵阳 550001; |
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| 基金项目： | 贵阳市气象局气象科研基金项目(筑气科合201704) |
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| 摘 要： | 为去除全球变暖等压面抬升的影响、客观地反映西太平洋副热带高压的真实变化,本研究使用了1951~2017年NCEP/NCAR的月平均500hPa高度场再分析资料以及国家气候中心提供6~8月的大气环流指数,基于去除全球变暖影响的西太平洋副热带高压表征线,研究探讨了全球变暖背景下西太平洋副热带高压的变化。研究表明,去除全球变暖影响前(后)西太平洋副热带高压有面积指数增大(减小)、强度指数增强(减弱)和西伸脊点指数西伸(东退)的演变特征。可见,全球变暖可能是西太平洋副热带高压面积、强度和东西位置发生变化的原因之一。
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| 关 键 词： | 全球变暖 西太平洋副热带高压 气候变化 |
| 收稿时间： | 2019-05-22 |
Discussion on the Changes of the Western Pacific Subtropical High under the Background of Global Warming |
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| Affiliation: | 1. Guiyang Meteorological Bureau, Guiyang 550001, China;2. Guizhou Climate Center, Guiyang 550002, China;3. Guizhou key Lab of Mountainous Climate and Resources, Guiyang 550002, China;4. Chongqing Climate Center, Chongqing 401147, China |
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| Abstract: | In order to remove the effect of isobaric surface uplift under the background of global warming and objectively reflect the real changes of the western Pacific subtropical high,the monthly average 500hPa geopotential height reanalysis data of NCEP/NCAR from 1951 to 2017 and the atmospheric circulation index from June to August provided by the national climate center are used in this study.Based on the WPSH characterization line after removing global warming,the changes of the Western Pacific subtropical high under the Background of Global Warming are discussed.Before/after the influence of global warming,the Western Pacific subtropical high has the evolution characteristics of the GM (increase/decrease),GQ (enhancement/attenuation) and GD (west extension/east retreat).Therefore,Global warming may be one of the reasons for the changes in the area,intensity and location of the Western Pacific subtropical high. |
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