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A new method of measuring optical turbulence of atmospheric surface layer at Antarctic Taishan Station with ultrasonic anemometer

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【作者】 WU XiaoqingTIAN QiguoJIANG PengCHAI BoQING ChunCAI JunJIN XinmiaoZHOU Hongyan

【Author】 WU Xiaoqing;TIAN Qiguo;JIANG Peng;CHAI Bo;QING Chun;CAI Jun;JIN Xinmiao;ZHOU Hongyan;Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Science, Key Laboratory of Atmospheric Composition and Optical Radiation, Chinese Academy of Science;Polar Research Institute of China;University of Science and Technology of China;Science Island Branch of Graduate School, University of Science and Technology of China;

【机构】 Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Science, Key Laboratory of Atmospheric Composition and Optical Radiation, Chinese Academy of SciencePolar Research Institute of ChinaUniversity of Science and Technology of ChinaScience Island Branch of Graduate School, University of Science and Technology of China

【摘要】 To find the optimal location for large-aperture telescopes is a goal of astronomy. Chinese Antarctic astronomy has begun to flourish in recent years, and it is an urgent need in basic astronomical work to measure and analyze the optical turbulence spatiotemporal distribution in the Antarctic region. We analyzed turbulence data measured by a mobile atmospheric parameter measurement system from 30 December 2013 to 10 February 2014 at Antarctic Taishan Station. Because there is a discrepancy between the refractive index structure constant Cn2 measured by an ultrasonic anemometer with a single-point temperature structure function method and by micro-thermometer, a new method to measure Cn2 with a temperature spectrum method is proposed herein. Through comparing long-term continuous Cn2 data derived from ultrasonic anemometer with those via the new method and micro-thermometer, trend, magnitude and measured weak turbulence of 2×10-16m-2/3 are generally satisfactory. The reason for the discrepancy in Cn2 measurement between the ultrasonic anemometer with the old method and micro-thermometer is investigated.

【基金】 supported by the National Natural Science Foundation of China (Grant no. 41275020);supported by the Chinese Polar Environment Comprehensive Investigation & Assessment Programs (Grant nos. CHINARE2013-02-03, CHINARE2014-02 -03, and CHINARE201502-03);the Polar Science Innovation Fund for Young Scientists of Polar Research Institute of China (Grant no. CX20130201);the Shanghai Natural Science Foundation (Grant no. 14ZR1444100).
【所属期刊栏目】 Letter (2015年04期)
  • 【DOI】10.13679/j.advps.2015.4.00305
  • 【分类号】P412
  • 【被引频次】2
  • 【下载频次】16
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