Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (26): 266-271.doi: 10.11924/j.issn.1000-6850.2014-1440

Special Issue: 农业气象

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Inhomogeneity Characteristics of Maximum Wind Speed Over Anhui Province

  

  • Received:2014-05-19 Revised:2014-07-13 Online:2014-09-15 Published:2014-09-15

Abstract: Using the data of daily maximum wind speed over resent 30a in Anhui Province, the authors analyzed the uniformity distribution of maximum wind speed concentration degree (MWSCD) and maximum wind speed concentration period (MWSCP), and discussed the circulation characteristics of the different MWSCD in Anhui Province. The results show that most of the MWSCD in Anhui Province is 0.06, the low values of MWSCD is in mountainous area. The value of MWSCP is mainly about 18 to 24 period between Huaibei and Jianghuai, the MWSCP in mountainous area is late, mostly in the 24 to 28 period, the different distribution space of MWSCD and MWSCP is mainly affected by the topography. The MWSCD has obvious interannual variability, the high value and low value comparison is different in the circulation. High value in the upper troposphere, the East and the West of China present "+" potential height anomaly, at the same time, corresponding to a cyclonic and an anticyclonic circulation center, Anhui is in the cyclonic circulation. In the middle troposphere, Anhui is under control of the northerly wind anomalies. In the lower troposphere, Anhui province is in the southwest side of the negative anomaly of geopotential height and controlled by Northwest wind.