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Journal of Desert Research ›› 2010, Vol. 30 ›› Issue (3): 640-647.

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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

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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