利用MODIS卫星资料监测内蒙古地区大气总水汽量方法研究

Method for observation of total atmosphere vapor over Inner Mongolia with MODIS data

由于大气可降水量在人工影响天气、天气预报、气候影响、大气辐射传输等方面都具有非常重要的作用,所以准确精细地监测水汽优为显得重要。随着卫星技术的日益发展壮大,很多地球观测技术从地基观测逐步发展成空基观测。卫星观测时空分辨率很高,而且精度也在不断地提高,逐步成为最主要的地球观测手段。文中利用GPS资料和地面湿度参量(地面水汽压、地面露点)修正了利用地面湿度参量、地理纬度和海拔高度等参量计算大气总水汽量的关系式的基础上研究建立了适合内蒙古地区的MODIS卫星近红外通道监测大气总水汽量方法。

It is very important to measure and monitor water vapor in the air, because it plays a very role in weather modification and forecast, climate, and atmospheric radiation transfer. GPS data and important ground based measurements of humidity parameters （ such as vapor pressure and dew point temperature） were used to amend the expression for calculation of atmospheric precipitatble water. Base on it, a method of MODIS near - infrared suitable for measurement of the atmosphere vapor over Inner Mongolia area was established.