Presentation is loading. Please wait.

Presentation is loading. Please wait.

Daily Rainfall for the Indian Monsoon Region from Merged Satellite and Gauge Values: Large-Scale Analysis from Real-Time Data A. K. Mitra, M. Dasgupta,

Similar presentations


Presentation on theme: "Daily Rainfall for the Indian Monsoon Region from Merged Satellite and Gauge Values: Large-Scale Analysis from Real-Time Data A. K. Mitra, M. Dasgupta,"— Presentation transcript:

1 Daily Rainfall for the Indian Monsoon Region from Merged Satellite and Gauge Values: Large-Scale Analysis from Real-Time Data A. K. Mitra, M. Dasgupta, A.K.Bohra NCMRWF, India

2

3

4

5

6

7

8

9

10

11 All Other Satellites INSAT series METEOSAT-5, METEOSAT-6/7 (to be moved) SSM/I AMSU (NOAA) TRMM Megha-Tropique GPM

12 What Can Be Done IR data: Take care of Cirrus clouds Combined IR + Microwave Techniques Calibrate IR Rain with MT Data Merge with Gauge Data Prepare Daily, Weekly and Monthly data

13 Digital: IMD 556 surface observation (each district/ county ) 35% received in real time on computer Manuscript form: State governments 3540 gauges Agromet stations 206

14 More real-time raingauge data Computer / Communication is much better now; this is the time Reporting of daily (24-hour collection) raingauge data (especially zero precipitation amounts) needs to be standardized around the globe The organized, constructed 24-hour rainfall database from sub-daily reports of precipitation (3-hourly, 6-hourly, etc.) coming regularly from good stations can contribute significantly as an additional data source This will require coordination efforts at the national and international levels. Delineate areas of no-rain will be useful where less numbers of raingauge data are available (Ebert and Weymouth, 1999).

15 Calibration of IR Rain Jobard Gairola & Krishnamurti INSAT & METEOSAT-5 IR rain can be calibrated with MT Rain Better Rain estimate from MT different instruments from RT and 1-D column physics model with input from NWP Finally with better understanding of Rain process, estimates will be better

16


Download ppt "Daily Rainfall for the Indian Monsoon Region from Merged Satellite and Gauge Values: Large-Scale Analysis from Real-Time Data A. K. Mitra, M. Dasgupta,"

Similar presentations


Ads by Google