1979年~2018年青藏高原气温与湿度特征分析

Temperature and Humidity Characteristics of the Qinghai-Tibet Plateau from 1979 to 2018

摘要: 本文将利用中国气象强迫数据集(CMFD)，对1979~2018年的青藏高原区域进行气温与湿度的特征分析,主要研究1979~2018年气温与湿度的时空分布特征，以及气温、湿度与降水，辐射等气象因素的相关性。结论如下：1) 气温与湿度在时间序列上的变化具有一致性，但湿度的变化幅度比气温更大；气温和湿度的分布均受地形影响，年平均气温和比湿在径向平均和纬向平均下都与海拔高度有很大的负相关性，即气温和湿度都随海拔高度的增高而减小；2) 气温和湿度除了受海拔高度和经纬度等自然因素的影响，还与向下长波辐射、降水等气象要素有很大的相关性。

Abstract: This article will use the Chinese Meteorological Forced Data Set (CMFD) to analyze the characteristics of air temperature and humidity in the Qinghai-Tibet Plateau from 1979 to 2018, mainly to study the spatial and temporal distribution characteristics of air temperature and humidity from 1979 to 2018, as well as air temperature, humidity and precipitation, correlation of meteorological factors such as radiation. The conclusions are as follows: 1) The changes in air temperature and humidity in time series are consistent, but the change in humidity is greater than that in air temperature; the distribution of air temperature and humidity are affected by the terrain, and the annual average air temperature and specific humidity are averaged in the radial and latitude direc-tions both have a great negative correlation with the altitude, that is, the temperature and humidity decrease with the increase of altitude; 2) In addition to the influence of natural factors such as altitude and latitude and longitude, temperature and humidity are also highly related to meteorological elements such as long-wave downward radiation and precipitation.