PAN Xiaolong
Chengdu Institute of Plateau Meteorology, China Meteorological Administration, Chengdu 610071;Hunan Lightning Protection Center, Changsha 410007YE Chengzhi
Hunan Meteorological Observatory, Changsha 410007ZHANG Jianming
Zhuzhou Meteorological Bureau of Hunan Province, Zhuzhou 412003CHEN Deqiao
Hengyang Meteorological Bureau of Hunan Province, Hengyang 421001Using the 1953—2010 meteorological records at the Nanyue mountain observatory,the climate change characteristics are analyzed using linear regression,Mann-Kendall test and wavelet analysis.In addition,the interannual variations of precipitation and temperature are comparatively analyzed which are related to mean wind speed closely.Results show that both annual and seasonal mean wind speed have obvious decreasing trends during the period analyzed,and abrupt descending changes occurred in the early 1990s.Generally,the wind speeds had noticeable quasi-2-year and quasi-4-year periods.While the mean temperature,the maximum temperature and the minimum temperature show obvious increasing trends.In general,the temperature had noticeable quasi-2-year and qusi-4-year periods,and there are abrupt changes from low temperature to high temperature in the mid-1990s.Precipitation had a decreasing trend.In general,the precipitation had significant quasi-2-year and quasi-3-year periods.There is a significant negative correlation between wind speed and mean temperature,maximum temperature and minimum temperature,all of which have passed the confidence test(p≤0.01).The correlation coefficient between wind speed and precipitation does not pass the significance test,but the variations of wind speed and precipitation have anti-phase changes in the mid-1960s,and the mid-1970s until the beginning of 21st century.
PAN Xiaolong, YE Chengzhi, ZHANG Jianming, CHEN Deqiao. Climate change characteristics at the Nanyue mountain observatory in recent 58 years[J]. Journal of Nanjing University of Information Science & Technology,2015,7(1):68-78
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