A mobile polar atmospheric parameter measurement system： II. First atmospheric turbulence observation at Antarctic Taishan Station

摘要

This is the second paper of a series devoted to atmospheric optical turbulence C2 n observation using a mobile polar atmospheric parameter measurement system. We present the initial results of C2 n measurement at Antarctic Taishan Station using micro-thermal sensors and a three-dimensional sonic anemometer at height ~2.0 m above the snow surface. The site testing experiments were carried out during the 30 th Chinese National Antarctic Research Expedition(CHINARE). We collected about 1 000 h of data between 30 December 2013 and 10 February 2014. The C2 n curve exhibits clear daily structures, with two peaks around midnight and midday and two troughs around 7:30 and 17:00 local time(UTC+5). The mean C2 n is 2.7×10-15 m-2/3 and the 25 th and 75 th percentiles of the C215 n cumulative distribution are 9.6×10-16 m-2/3 and 6.2×10- m-2/3, respectively. Meteorological parameters such as temperature, relative humidity, wind speed, and air pressure are also presented.