Climatology and trends of tropical cyclone high wind in mainland China: 1959–2011
Climatology and trends of tropical cyclone high wind in mainland China: 1959–2011
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DOI：
10.1002/2015jd024031
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发表时间：
2015-12
期刊：
影响因子：
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通讯作者：
X. Ni;Qinghong Zhang;D. Ma;Liguang Wu;Fumin Ren
中科院分区：
文献类型：
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作者：
X. Ni;Qinghong Zhang;D. Ma;Liguang Wu;Fumin Ren
利用574个测站的地面风场资料，分析了1959-2011年中国大陆热带气旋大风（TCHW;风速≥10.8 m s−1）的气候特征和变化趋势。在这些监测站中，有41个监测站每年受TCHW影响超过一次，主要位于沿着东南海岸线或一些内陆山区。TCHW频率对大风（HW;风速≥10.8 m s-1）频率的贡献在中国东南沿海沿着最大，在内陆地区迅速下降。20世纪80年代后，TCHW频率（强度）和HW频率（强度）均表现出明显的下降（减弱）趋势。由TCHW引起的HW事件比例下降，但趋势不显著。TCHW频率和强度的变化与影响TC的数量（ITC：导致至少一个TCHW事件的TC）、ITCT（ITC时间：观察ITC的时间）、ITC影响范围以及ITC强度和轨迹的变化相关。在研究期间，ITC和ITCT的年度数量持续下降。与1959-1982年相比，1983-2011年国际贸易中心影响力与贸易中心规模相关的范围较小。国际热带气旋强度的变化趋势表现为弱（强）国际热带气旋增加（减少）的趋势。TCHW频率最高的年份比TCHW频率最低的年份有更多的ITCs和ITCT。
The climatology and trends of tropical cyclone (TC) high wind (TCHW; wind speeds ≥10.8 m s−1) in mainland China during 1959–2011 were studied based on a comprehensive series of surface wind observations from 574 stations. Of these stations, 41 were affected by TCHW more than once per year and were mainly located along the southeast coastline or at some inland mountain locations. The contribution of TCHW frequency to high wind (HW; wind speeds ≥10.8 m s−1) frequency was highest along the southeast coastline of China and decreased rapidly at inland locations. Both the TCHW frequency (intensity) and HW frequency (intensity) displayed significant downward (weakened) trends after the 1980s. The proportion of HW events accounted for by TCHW decreased, although the trend was not significant. The changes in TCHW frequency and intensity were associated with variations in the number of influencing TCs (ITC: a TC that causes at least one TCHW event), ITCTs (ITC time: an observation time with ITCs), the range of ITC influence, and ITC intensity and track. The annual number of ITCs and ITCTs declined consistently during the study period. The range of ITC influence as related to the TC size in 1983–2011 was smaller than in 1959–1982. The variation of the percentiles of ITC intensity showed an increasing (decreasing) trend of weaker (stronger) ITCs. Years with the maximum TCHW frequency had more ITCs and ITCTs than those with the minimum TCHW frequency.