| 攀枝花气温日变化特点及其影响因素 |
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| 引用本文： | 宋明明,李秀娟,尹雪梅,李林.攀枝花气温日变化特点及其影响因素[J].安徽农业科学,2013,41(15):6810-6811,6821. |
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| 作者姓名： | 宋明明 李秀娟 尹雪梅 李林 |
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| 作者单位： | 攀枝花国家基本气象站,四川攀枝花,617000 |
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| 摘 要： | 选取攀枝花国家基本站2005～2012年5月份中云量小于2个量且风速较小的天气中的气温、太阳辐射和地面温度资料,对比分析辐射、地面温度和空气温度的日变化规律以及对比1 h和3 h变温过程,探讨攀枝花气温日变化特征及其影响因素。结果表明,攀枝花地区气温日变化具有独特的规律,最高温度出现时间相对偏晚;在干季晴好天气,一天中高温时段持续时间长,日落前降温不明显。这是由于该地区高海拔、低纬度的特殊下垫面性质,使得在晴朗天气里日出之后太阳辐射迅速增强,并在达到最高值后依然持续较长时间(11:00～14:00);地面受到太阳辐射而升温,地面最高温度出现时间落后于太阳辐射最高值的出现时间,出现时间相对较晚(14:00)。根据地气系统的热平衡理论,空气吸收地面辐射而增温,空气温度最高值的出现时间也落后于地面的(16:00～17:00)。
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| 关 键 词： | 气温 日变化 影响因素 |
Temperature Daily Variation and Influencing Factors in Panzhihua |
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| Institution: | SONG Ming-ming et al(Panzhihua National Basic Weather Station,Panzhihua,Sichuan 617000) |
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| Abstract: | The temperature,solar radiation and ground temperature data were selected in the weather with less than 2 volume of cloud and lower wind speed in May during 2005-2012 in Panzhihua national basic station,the daily variation law of radiation,ground temperature and air temperature were compared,as well as the 1 h and 3 h temperature variation process.The daily variation characteristics and influence factors of temperature in Panzhihua were discussed.The temperature daily variation in Panzhihua has a unique law,the occurrence of the highest temperature is late;In sunny days in drying season,the high temperature duration is long,temperature decreasing is not obvious before sunset.For the special underlying surface properties of high altitude and low latitude in Panzhijhua,solar radiation increased significantly after sunrise in sunny days and the highest temperature keep a long time（11： 00-14： 00）;Ground temperature increased by solar radiation,the ground highest temperature occurred（14： 00） after the appearance of the highest value of solar radiation.According to heat balance theory,air temperature increased by absorbing ground radiation,the highest value of air temperature occurred after the ground（16： 00-17： 00）. |
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| Keywords: | Temperature Daily variation Influencing factors |
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