Has the stilling of the surface wind speed ended in China
Has the stilling of the surface wind speed ended in China
复制标题
中国地面风速静止结束了吗
DOI：
10.1007/s11430-020-9738-4
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发表时间：
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期刊：
影响因子：
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通讯作者：
Ma Zhuguo
中科院分区：
文献类型：
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作者：
Yang Qing;Li Mingxing;Zu Ziqing;Ma Zhuguo
自20世纪60年代以来，全球陆地表面风速（SWS）显著减弱，这种现象被称为全球陆地静止。最新的研究发现，这种停滞在2010年左右发生了逆转，从那时起，全球SWS一直在加强。然而，在中国还缺乏系统的定量分析。我们基于1971 - 2019年的SWS观测数据，分析了中国SWS长期趋势的过渡和区域差异。结果表明，中国年平均SWS在2014年前后经历了由持续减弱到显著增强的逆转过程，说明静止现象可能在2014年结束。这种逆转具有明显的区域和季节变化。在中国东北、新疆西部和青藏高原，年平均和季节平均SWS从减弱到增强的年份分别为2013/2014、1993/1994和2000年。而华北西部仅在2007年以后的秋冬季表现出明显的增强趋势;华南仅在2012年以后的秋季平均表现出增强趋势。值得注意的是，东部和南部沿海地区，华北和新疆东部正在进行消力工作。
Since the 1960s, the global land surface wind speed (SWS) has significantly weakened, a phenomenon known as global terrestrial stilling. The latest research found that the stilling reversed around 2010, and since then the global SWS has been strengthening. However, there is still a lack of systematic quantitative analysis in China. We analyzed the transition and regional differences in the long-term trends of the SWS in China based on observational SWS data from 1971 to 2019. The results showed that annual mean SWS in China underwent a reversal from a continuously weakening trend to a significantly strengthening trend around 2014 and implying that stilling may have ended in 2014. The reversal had obvious regional and seasonal variations. In Northeast China, Western Xinjiang as well as on the Tibetan Plateau, the years with both annual and seasonal mean SWS changing from weakening to strengthening were around 2013/2014, 1993/1994, and 2000. However, in the west of North China, SWS showed an obviously strengthening trend only in autumn and winter after 2007; while only autumn mean SWS showed a strengthening trend after 2012 in South China. It should be noted that stilling is ongoing in the eastern and southern coastal areas, North China and Eastern Xinjiang.