On the Changes in Precipitation Spectrum Over India Using High-Resolution Precipitation Estimates from Remote Sensing Observations

Present study explores the precipitation spectrum over Central India in changing climate using accurate precipitation estimates at fine resolution (hourly observations at 5 km resolution) from multi-spectral satellite observations using 24 years (1998–2021) of high-resolution data of precipitation o...

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Bibliographic Details
Published in:Journal of the Indian Society of Remote Sensing 2024-02, Vol.52 (2), p.251-255
Main Authors: Mishra, Anoop Kumar, Mitra, Ashim K., Bhan, Subhash Chander
Format: Article
Language:English
Subjects:
Climate change
Disaster management
Earth and Environmental Science
Earth Sciences
Emergency preparedness
Estimates
Extreme weather
Flash floods
High resolution
Precipitation
Rain
Rainfall
Remote sensing
Remote Sensing/Photogrammetry
Research Article
Satellite observation
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Summary:Present study explores the precipitation spectrum over Central India in changing climate using accurate precipitation estimates at fine resolution (hourly observations at 5 km resolution) from multi-spectral satellite observations using 24 years (1998–2021) of high-resolution data of precipitation over India during the summer monsoon. Though only a 24-year short period is perceived to be inadequate to explore the long-term changes in the  precipitation spectrum, this study still represents the best possible way to explore the changes in short-lived intense precipitation events in changing climate in the high-resolution satellite era. Changes in precipitation extremes are linked with regional warming over India. A significant increase in heavy precipitation events is observed over Central India. Heavy precipitation events show an increase of about 137% over Central India for a unit degree increase in warming. Low and moderate precipitation events show a decrease of up to 54% over the region. Changes in extreme rain events are highest in July month. Results reported in this study highlight the importance of disaster preparedness against flash flooding due to increased heavy rain events.
ISSN:0255-660X
0974-3006
DOI:10.1007/s12524-022-01622-8