Global Radiation, Transmissivity and Bright Sunshine Hour Trend over Nagpur in Pre-Monsoon and Monsoon Seasons  

作　　者：Jyotsna Singh Manoj Kumar Bimal K. Bhattacharya 

机构地区：[1]Agriculture-Forestry and Environment Group (AFEG), Space Applications Centre (ISRO), Ahmedabad, India [2]Center of Excellence in Climatology, Birla Institute of Technology, Ranchi, India

出　　处：《Atmospheric and Climate Sciences》2012年第2期206-209,共4页大气和气候科学（英文）

摘　　要：Global dimming term was introduced in 1990s which means the decline in global radiation. This decline was reported in several studies across the world. In the present study time series analysis of global radiation (1960-2003), transmissivity (1960-2003) and bright sunshine hours (1973-2003) has been done over Nagpur during pre-monsoon (March to May) and monsoon seasons (June-September). A significant decrease in global radiation and transmissivity has been reported for both the seasons and it was higher during pre-monsoon compared to monsoon. Bright sunshine hour has also shown good agreement with the previous trend with a significant trend on pre-monsoon months only. Mann Kendall test was performed to confirm the significance of reported trend.Global dimming term was introduced in 1990s which means the decline in global radiation. This decline was reported in several studies across the world. In the present study time series analysis of global radiation (1960-2003), transmissivity (1960-2003) and bright sunshine hours (1973-2003) has been done over Nagpur during pre-monsoon (March to May) and monsoon seasons (June-September). A significant decrease in global radiation and transmissivity has been reported for both the seasons and it was higher during pre-monsoon compared to monsoon. Bright sunshine hour has also shown good agreement with the previous trend with a significant trend on pre-monsoon months only. Mann Kendall test was performed to confirm the significance of reported trend.

关 键 词：GLOBAL Radiation BRIGHT SUNSHINE HOUR TRANSMISSIVITY GLOBAL Dimming Mann Kendall Test 

分 类 号：P4[天文地球—大气科学及气象学]