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

• DOI: 10.4236/acs.2012.22021
• Publication Date: 2012-05-17T17:50:44Z
• Authors: Jyotsna Singh; Manoj Kumar; Bimal K. Bhattach...
• Keywords: Sunshine duration; Trend analysis

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