基于微波辐射计的乌鲁木齐水汽日变化初步分析  

Preliminary Analysis of the Precipitable Water Vapor Daily Variation by the Ground-Based 35-Channel Microwave Radiometer in Urumqi

作　　者：王健[1,2] 崔彩霞 刘惠云 

机构地区：[1]新疆师范大学地理科学与旅游学院,新疆乌鲁木齐830054 [2]中国气象局乌鲁木齐沙漠气象研究所,新疆乌鲁木齐830002 [3]新疆气象台,新疆乌鲁木齐830002

出　　处：《沙漠与绿洲气象》2011年第6期22-26,共5页Desert and Oasis Meteorology

基　　金：中央科技支疆项目(200891129);公益性行业(气象)科研专项(GYHY201106007)

摘　　要：以地基35通道微波辐射计测量的大气可降水量(简称PWV)为基础,分析了乌鲁木齐地区四个季节中的日变化特征。冬季日变化差为0.093 cm,春季日变化差为0.153cm,夏季日变化差为0.291 cm,秋季日变化差为0.228 cm。另外,四个季节中水汽最大值/最小值出现频率最高的时段也呈现一定的规律,即最大值一般出现在06:00到06:59和22:00到22:59之间;PWV每小时变化率为正值和负值的概率在冬、春、秋季不是太明显。Based on the precipitable water vapor （PWV） data from 35-channel ground-based microwave radiometer in Urumqi, the diurnal variation characteristics in four seasons were analyzed. The daily range was 0.093 cm, 0.153 cm, 0.291 cm and 0.228 cm in winter, spring, summer and autumn respectively. Moreover, the extreme value of PWV appeared mostly during 06：00-06：59 LST and 22：00-22：59 LST in the four seasons. Moreover, in every season, both the positive and negative percentages of hourly change rate of PWV were nearly 50%.

关 键 词：地基微波辐射计 PWV 日变化特征 乌鲁木齐 

分 类 号：P412[天文地球—大气科学及气象学]