| 甘南地区近40年气温变化特征 |
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| 引用本文： | 王建兵,王振国,汪治桂.甘南地区近40年气温变化特征[J].气象,2007,33(1):112-117. |
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| 作者姓名： | 王建兵 王振国 汪治桂 |
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| 作者单位： | 1. 南京信息工程大学,南京,210044;甘肃省甘南州气象局
2. 甘肃省甘南州气象局 |
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| 摘 要： | 通过时甘南地区近40年气温变化特征分析，发现甘肃西南部年平均气温在1990年代初有暖突变，从1980年代末开始该区域夜间开始明显变暖，到1990年代出现白天、夜间同时变暖的现象，甘肃西南部的气温突变主要是由于1990年代后白天和夜间温度同时上升造成的。秋季气温在1980年代末开始上升，夏季和冬季气温到1990年代初开始上升。最高、最低气温和气温日较差的变化具有明显的季节差异。
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| 关 键 词： | 气温变化 周期 突变 |
| 收稿时间： | 2006/4/11 0:00:00 |
| 修稿时间： | 2006-04-112006-11-26 |
Analysis of Variation Characteristics of Temperature in Gannan, Gansu Province |
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| Wang Jianbing,Wang Zhenguo and Wang Zhigui.Analysis of Variation Characteristics of Temperature in Gannan, Gansu Province[J].Meteorological Monthly,2007,33(1):112-117. |
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| Authors: | Wang Jianbing Wang Zhenguo and Wang Zhigui |
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| Abstract: | Based on the monthly temperature data at 7 stations in Gannan, Gansu Province, the variation characteristics of temperature in recent 40 years were analyzed. The results show that the abrupt change of the annual mean temperature occurred in the early of 1990s, the night-time temperature increased in the end of 1980s, in the 1990s the temperature of day-time and night- time increased concurrently, the main reason for the abrupt change of temperature in the area is concurrent increase of the day-time and night-time temperature in the 1990s. It is found that a quasi-8-year period is the main period of the mean temperature, maximum temperature and minimum temperature before the mid 1980s. The mean temperature of autumn began increasing from the end of 1980s, the mean temperatures of summer and winter began increasing from the early of 1990s. The daily maximum temperature, daily minimum temperature and daily range of temperature vary with seasons. |
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| Keywords: | temperature variation period abrupt change |
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