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中国沙漠 ›› 2010, Vol. 30 ›› Issue (3): 640-647.

• 天气与气候 • 上一篇    下一篇

塔克拉玛干沙漠腹地太阳紫外UV-B辐射的观测与分析

何 清1,2, 金莉莉1,2,3, 艾力·买买提明1,2, 李 帅4 , 杨兴华1,2,3, 李振杰1,2,3   

  1. 1.中国气象局 乌鲁木齐沙漠气象研究所, 新疆 乌鲁木齐 830002; 2.塔克拉玛干沙漠大气环境观测试验站, 新疆 塔中 841000; 3.新疆师范大学 地理科学与旅游学院, 新疆 乌鲁木齐 830054; 4.乌鲁木齐气象卫星地面站, 新疆 乌鲁木齐 830011
  • 收稿日期:2009-04-15 修回日期:2010-01-06 出版日期:2010-05-20 发布日期:2010-05-20

Observation and Analysis of Solar UV-B Radiation over the Taklimakan Desert Hinterland

HE Qing1,2, JIN Li-li1,2,3, Ali-Mamtimin1,2, LI Shuai4, YANG Xing-hua1,2,3, LI Zhen-jie1,2,3   

  1. 1.Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China; 2.Taklimakan Desert Atmosphere and Environment Observation Experiment Station, Tazhong 841000, Xinjiang, China; 3.College of Geographical Science and Tourism, Xinjiang Normal University, Urumqi 830054, China;4.Urumqi Meteorological Satellite Ground Station, Urumqi 830011, China
  • Received:2009-04-15 Revised:2010-01-06 Online:2010-05-20 Published:2010-05-20

摘要: 利用塔中站(39°01′N,83°40′E)直接探测的紫外辐射资料,对塔克拉玛干沙漠近地层紫外辐射特征进行了系统的分析。结果表明,紫外UV-B辐射年总量为8.59 MJ·m-2·a-1。夏季紫外线辐射强度较大,7月达到最大为1.24M J·m-2,占紫外UV-B辐射年总量的14.44% ;冬季紫外线辐射强度较小,约为7月的1/5,1月出现最低值为0.257 M J· m-2;紫外UV-B瞬时辐射强度全年峰值为2.51 W·m-2,出现在6月。1、4、7、10月紫外UV-B辐射的日总量变化对天气现象有不同程度的反映,天气现象较少的1月逐日紫外辐射上下变动的离散度较小,7月最大。紫外UV-B辐射随云量增多而降低;沙尘使紫外UV-B辐射的降低较为显著,沙尘暴时,其值为各类风沙天气中最低。

关键词: 紫外UV-B辐射, 影响因子, 塔克拉玛干沙漠

Abstract:

A set of ultraviolet radiation data from the Tazhong station (83°40′ E, 39°01′ N) were analyzed. The results show that the annual total UV-B radiation is 8.59 MJ·m-2·a-1. In detail, the monthly irradiance intensity is strong in summer, occupying 14.44% of the annual total and reaching the highest of 1.24 MJ·m-2 in July; it is weak in winter, declining to the lowest of 0.257 MJ m-2 in January. The peak value of instantaneous irradiation intensity is 2.51 W·m-2 in June. The variety of daily accumulative UV-B radiation in January, April, July and October is restricted to the weather phenomena in different degree. The dispersed degree of the daily accumulative UV-B radiation in January is less because of its lesser weather phenomena, and it is most in July because of its more weather phenomena. The UV-B radiation should increase when the cloud amount reduces. Sand dust can cause the UV-B radiation reduced remarkably, and it is the smallest in sand storm.

Key words: ultraviolet-B radiation, influencing factors, Taklimakan Desert

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