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Global Radiation, Transmissivity and Bright Sunshine Hour Trend over Nagpur in Pre-Monsoon and Monsoon Seasons
Center of Excellence in Climatology, Birla Institute of Technology, Ranchi, India
Center of Excellence in Climatology, Birla Institute of Technology, Ranchi, India
Agriculture-Forestry and Environment Group (AFEG), Space Applications Centre (ISRO), Ahmedabad, India
- 1 Center of Excellence in Climatology, Birla Institute of Technology, Ranchi, India
- 2 Center of Excellence in Climatology, Birla Institute of Technology, Ranchi, India
- 3 Agriculture-Forestry and Environment Group (AFEG), Space Applications Centre (ISRO), Ahmedabad, India
Atmospheric and Climate Sciences·Volume 02 (2012)·Pages 206–209·Published 26 April 2012·DOI10.4236/acs.2012.22021
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Abstract
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.
KeywordsGlobal RadiationBright Sunshine HourTransmissivityGlobal DimmingMann Kendall Test
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