3DIMG_L2B_IMC INSAT multispectral Rainfall Algorithm Technique (IMSRA) is one of the main operational rainfall retrieval algorithms for INSAT-3D. This algorithm estimates precipitation based on non-linear power law relationship established between infrared (IR) brightness temperatures (Tbs, 10.7 ?m observations) and TRMM-PR surface rain rate. Based on a number of case studies and research works carried out, a further refinement of the algorithm was made.
http://mosdac.gov.in/look/3D_I....MG/preview/2021/19JU