西北西风区与东部季风区年气温变化特征对比分析

 利用我国西北西风区138站、东部季风区375站1964\_2006年43 a的年平均气温资料,对其时空变化特征及气温变化倾向率进行了对比分析。结果表明,西风区与季风区的时间变化规律基本一致,总体是在波动中呈一致的上升趋势,上升的趋势均是随着时间的推移而增加的,但西风区的年际变化更为剧烈,年际变化幅度大;除西风区1站和季风区4站具有负温度变率外,其余各站均为正温度变率,西风区≥0.4 ℃/10a变率区位于新疆西北部、新疆东部至青海西部的带状分布区及内蒙中部地区,而季风区≥0.4 ℃/10a位于受季风影响相对弱的北部地区,主要是西安-天津以西、以北的华北、东北地区。

Comparison of Annual Temperature Change Characteristics in Northwest Westerly Region and Eastern Monsoon Region

The 43-year average temperature data (from 1964 to 2006) from 138 stations in Northwest Westerly Region and from 375 stations in eastern Monsoon Region were used to compare their spatiotemporal characteristics. The change trends of temperature in both regions were basically same, generally increasing except for small fluctuations. The inter-annual change extent was larger in the Westerly Region than in the Monsoon Region. Apart from one station in the Westerly Region and four stations in the Monsoon Region, the other regions had positive temperature change rate. The locations in the Westerly Region with rate ≥0.4°C/10a are in northwestern Xinjiang, eastern Xinjiang to western Qinghai and middle of Inner Mongolia, and that in the Monsoon Region are in the relatively weak monsoon-affected areas, mainly in northern China and northeastern China.