西藏羊八井辐射观测初步分析

Preliminary analyses on radiation in Yangbajing of Tibet

摘要:

利用西藏羊八井2009年5月至2010年4月的辐射观测数据,统计了总辐射、紫外辐射、长波辐射、净辐射的日变化、月变化和季节变化,并分析了地表辐射超过太阳常数的发生频率及原因。结果表明,羊八井地区总辐射、紫外辐射、长波辐射、净辐射均表现出明显的日变化、月变化和季节变化特征;总辐射与地表短波反射辐射、总辐射与紫外辐射均表现出明显的正相关关系;大气逆辐射和地表长波辐射之间呈现出一定的的正相关关系。

Abstract:

Based on the radiation data from May of 2009 to April of 2010 at Yangbajing in Tibet,the daily,monthly and seasonal variations of total radiation,ultraviolet radiation,long-wave radiation and net radiation were discussed and the frequency and reasons why the radiation exceeds the solar constant were analyzed.The results show that the total radiation,ultraviolet radiation,long-wave radiation and net radiation in Yangbajing area present obvious daily,monthly and seasonal variation characteristics.There is a positive correlation between the total radiation and ultraviolet radiation,between the total radiation and short-wave reflected radiation over earth surface and between the downward atmospheric radiation and long-wave reflected radiation over earth surface.