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INSAT-3DR-Rapid Scan Operations for Weather Monitoring Over India


Affiliations
1 National Meteorological Satellite Centre, India Meteorological Department, New Delhi 110 003, India
2 National Meteorological Satellite Centre, India Meteorological Department, New Delhi 110 003ii
3 National Centre for Medium Range Weather Forecasting, Noida 201 309, India
4 Master Control Facility, Indian Space Research Organisation, Hassan 573 201, India
5 Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
 

In order to observe severe weather conditions during cyclones, thunderstorms, etc., IMAGER instruments on-board INSAT3D/3DR have been built with a flexible scanning feature known as ‘rapid scan mode’. Using this feature, the number of scan lines over a given coverage region and the number of repetitions of the selected region can be programmed for scanning. Therefore, to understand the physical processes involved in convective clouds associated with severe weather phenomena, rapid scan of INSAT3DR mode is attempted. It has very high temporal resolution of approximately 4 min and 30 sec. The present study will help in better understanding of the physical processes of severe weather phenomena and in nowcasting. It will also help to improve the accuracy in the NWP model forecast through assimilation of radiances and atmospheric motion wind determined using rapid scan mode.

Keywords

Nowcasting, Physical Processes, Rapid Scan Operations, Severe Weather Conditions, Weather Monitoring.
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  • INSAT-3DR-Rapid Scan Operations for Weather Monitoring Over India

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Authors

M. Mohapatra
National Meteorological Satellite Centre, India Meteorological Department, New Delhi 110 003, India
A. K. Mitra
National Meteorological Satellite Centre, India Meteorological Department, New Delhi 110 003, India
Virendra Singh
National Meteorological Satellite Centre, India Meteorological Department, New Delhi 110 003, India
S. K. Mukherjee
National Meteorological Satellite Centre, India Meteorological Department, New Delhi 110 003, India
Kavita Navria
National Meteorological Satellite Centre, India Meteorological Department, New Delhi 110 003ii
Vikram Prashar
National Meteorological Satellite Centre, India Meteorological Department, New Delhi 110 003, India
Ashish Tyagi
National Meteorological Satellite Centre, India Meteorological Department, New Delhi 110 003, India
Atul Kumar Verma
National Meteorological Satellite Centre, India Meteorological Department, New Delhi 110 003, India
Sunitha Devi
National Meteorological Satellite Centre, India Meteorological Department, New Delhi 110 003, India
V. S. Prasad
National Centre for Medium Range Weather Forecasting, Noida 201 309, India
Mudumba Ramesh
Master Control Facility, Indian Space Research Organisation, Hassan 573 201, India
Raj Kumar
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India

Abstract


In order to observe severe weather conditions during cyclones, thunderstorms, etc., IMAGER instruments on-board INSAT3D/3DR have been built with a flexible scanning feature known as ‘rapid scan mode’. Using this feature, the number of scan lines over a given coverage region and the number of repetitions of the selected region can be programmed for scanning. Therefore, to understand the physical processes involved in convective clouds associated with severe weather phenomena, rapid scan of INSAT3DR mode is attempted. It has very high temporal resolution of approximately 4 min and 30 sec. The present study will help in better understanding of the physical processes of severe weather phenomena and in nowcasting. It will also help to improve the accuracy in the NWP model forecast through assimilation of radiances and atmospheric motion wind determined using rapid scan mode.

Keywords


Nowcasting, Physical Processes, Rapid Scan Operations, Severe Weather Conditions, Weather Monitoring.

References





DOI: https://doi.org/10.18520/cs%2Fv120%2Fi6%2F1026-1034