山西省高温空间分布特征及区划

Spatial Distribution Characteristics and Regionalization of High Temperature in Shanxi

为定量化地了解山西省高温分布情况,笔者研究了山西省高温空间分布特征和区划方法。基于山西省境内分布较为均匀的69个地面气象观测站1970—2013年逐日最高气温资料,分析5—9月各月累计高温日数及年平均高温日数的空间分布情况,并通过考虑高温强度等级和持续时间2个因子,构建高温区划指标,绘制山西省高温区划图。结果表明:运城市的大部分和临汾市的南部年平均高温日数在15天以上,北部和东部大部分年平均高温日数在2天以下。山西省5—9月各月的高温中心均位于临汾市南部和运城市,高温中心各月多年平均高温日数分别为0.7、4.5、6.8、2.3、0.2天。高温区划图与空间分布图具有良好的区域一致性。

The paper aims to discuss the quantitative depiction method for high temperature in Shanxi. Basedon the daily maximum temperature data of 69 meteorological stations in Shanxi Province from 1970 to 2013,this paper studied the spatial distribution of high temperature days from May to September respectively, andthen based on the high temperature grades and high temperature duration, the high temperature regionalizationindices were constructed, the zoning map of high temperature was completed. The results showed that theannual average high temperature days were more than 15 days in most areas of Yuncheng and the south ofLinfen, and less than 2 days in the north and east of Shanxi. The high value centre of high temperature was inYuncheng and the south of Linfen, the frequencies of which were 0.7 d, 4.5 d, 6.8 d, 2.3 d and 0.2 d from Mayto September respectively. The zoning map of high temperature and the spatial distribution of high temperaturewere similar.