caa a22 4500 445800186 CHVBK 20180317145138.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s00704-011-0435-7 doi (NATIONALLICENCE)springer-10.1007/s00704-011-0435-7 Large-scale precipitation estimation using Kalpana-1 IR measurements and its validation using GPCP and GPCC data [Elektronische Daten] [Satya Prakash, Mahesh C., Rakesh Gairola] Large-scale precipitation estimation is very important for climate science because precipitation is a major component of the earth's water and energy cycles. In the present study, the GOES precipitation index technique has been applied to the Kalpana-1 satellite infrared (IR) images of every three-hourly, i.e., of 0000, 0300, 0600, ., 2100hours UTC, for rainfall estimation as a preparatory to the INSAT-3D. After the temperatures of all the pixels in a grid are known, they are distributed to generate a three-hourly 24-class histogram of brightness temperatures of IR (10.5-12.5μm) images for a 1.0° × 1.0° latitude/longitude box. The daily, monthly, and seasonal rainfall have been estimated using these three-hourly rain estimates for the entire south-west monsoon period of 2009 in the present study. To investigate the potential of these rainfall estimates, the validation of monthly and seasonal rainfall estimates has been carried out using the Global Precipitation Climatology Project and Global Precipitation Climatology Centre data. The validation results show that the present technique works very well for the large-scale precipitation estimation qualitatively as well as quantitatively. The results also suggest that the simple IR-based estimation technique can be used to estimate rainfall for tropical areas at a larger temporal scale for climatological applications. Springer-Verlag, 2011 Prakash Satya Atmospheric and Oceanic Sciences Group, Space Applications Centre, ISRO, 380 015, Ahmedabad, India aut C. Mahesh Atmospheric and Oceanic Sciences Group, Space Applications Centre, ISRO, 380 015, Ahmedabad, India aut Gairola Rakesh Atmospheric and Oceanic Sciences Group, Space Applications Centre, ISRO, 380 015, Ahmedabad, India aut Theoretical and Applied Climatology Springer Vienna 106/3-4(2011-12-01), 283-293 0177-798X 106:3-4<283 2011 106 704 https://doi.org/10.1007/s00704-011-0435-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00704-011-0435-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Prakash Satya Atmospheric and Oceanic Sciences Group, Space Applications Centre, ISRO, 380 015, Ahmedabad, India aut NATIONALLICENCE 700 1- C Mahesh Atmospheric and Oceanic Sciences Group, Space Applications Centre, ISRO, 380 015, Ahmedabad, India aut NATIONALLICENCE 700 1- Gairola Rakesh Atmospheric and Oceanic Sciences Group, Space Applications Centre, ISRO, 380 015, Ahmedabad, India aut NATIONALLICENCE 773 0- Theoretical and Applied Climatology Springer Vienna 106/3-4(2011-12-01), 283-293 0177-798X 106:3-4<283 2011 106 704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer