云南红外太阳塔选址及其结果  

Site Test for Infrared Solar Tower in Yunnan

作　　者：楼柯[1] 刘忠[1] 吴铭蟾[1] 卢汝为[1] 钱苹[1] 张瑞龙[1] 

机构地区：[1]中国科学院国家天文台云南天文台,云南昆明650011

出　　处：《云南天文台台刊》2002年第4期60-67,共8页Publications of the Yunnan Observatoty

摘　　要：介绍了云南太阳光学选址的历程。主要叙述了自1996年开始的红外太阳选址的过程:初选踏勘,比对筛选、定点观测。最佳选点为澄江县抚仙湖畔的半岛老鹰地。This paper describes the history of site tests for solar optical observations in Yunnan.The site test for the infrared solar tower (IST) in Yunnan began from 1996,and consisted of 3 phases:the preliminary site survey,comparison observation and the observation at the fixed stations (with S-DIMM).The best site is finalized at Lao Ying Di,a small peninsula on the bank of Fuxian Lake,Cheng Jiang county.The site for the IST station at Lao Ying Di is chosen following the comparison observation with SDIMM for over one year at two final near-water sites.The two sites are picked out from 7 sites near water and 8 sites in mountain areas with visual observation by using an 89mm Questar telescope after on-site survey over 40 candidate locations in Yunnan.The IST station is about 68 km form Kunming,the capital of Yunnan province.The average sunshine time is 2200 hours annually at the site.The yearly mean R0 observed with SDIMM characterizing the solar seeing is 12.3cm,with a moderate value of 11.5cm,corresponding to a resolution of 1″;the maximum R0 reaches to 42 cm,corresponding to a resolution of 0.3″.The R0 below 5 cm accounts for less than 10 per cent of the total samples.The rate of recurrence of the measured wind speed,less than 5m/s is 90%,and that of the wind speed at 6-10m/s is about 6%.The strong wind,at a speed higher than 15m/s,occurs only 3 times in a year.The yearly mean relative humidity is 75%,and the average water vapour in the atmosphere is 11 cm annually.

关 键 词：云南 红外太阳塔 天文选址 SDIMM 视宁度 澄江县 

分 类 号：P112[天文地球—天文学] TU224.6[建筑科学—建筑设计及理论]