西双版纳地区冬季辐射雾的初步研究

AN OBSERVATION AND ANALYSIS ON THE RADIATION FOG IN XISHUANGBANNA

中文摘要:

      西双版纳位于云南省南部,是我国有名的热带多雾地区。雾中能见度低,影响了交通运输,它具有有害的一面;但它对生产高质量的茶叶十分有利,雾和逆温所形成的山腰暖带,又能使橡胶树种植范围向山地扩大,因而雾对西双版纳农林业生产又具有有益的一面。1986年12月26日至1987年2月18日期间,我们对西双版纳地区的景洪、勐养和勐海等地辐射雾进行了28天的观测,用三用滴谱仪对雾滴谱取样,用GZW-1型低空探空仪进行边界屋温度探测。为了掌握山地不同高度雾的分布和温湿结构,还用汽车沿景洪至勋养的36km盘山公路作了77次来回流动观测,每隔lkm读取一个数据。本文利用上述探测资料,分析了西双版纳地区辐射雾的时空分布,温度层结和微物理结构,给出了辐射雾在发展过程中的一些特征。

英文摘要:

      Radiation fog was observed in Jinghong, Mengyang and Mengmai for 28 days from Dec. 26,1986 to Feb. 18,1987.A tri-ombination dropsize spectronteter was used for samplimg fog spectra, and GZW-1 type low altitude radio-sondes were used to obtain the vertical tomperature profile in the boundary layer. In order to know the distribution of fog and temperature in the mountain region, an observing car was used 77 times along the twisty road between Jing-hong and Mengyang to get data, with sampling interval of 1 km. With these observed data and historical records in local meteorologcal stations, the time-space distribution, temperature srratification and micropliysical structure of radianon fog in Xishuangbanna have been analysed, and some important characteristics about the fog's evolution have been obtained.