American Journal of Climate Change, 2021, 10, 407-421 https://www.scirp.org/journal/ajcc ISSN Online: 2167-9509 ISSN Print: 2167-9495 DOI: 10.4236/ajcc.2021.104021 Nov. 29, 2021 407 American Journal of Climate Change Comparison of Satellite Derived Rainfall Estimations: CMORPH, IMERG and GSMaP with Observed Precipitation Deepa Roy * , Sharmin Banu Department of Mathematics, Jashore University of Science and Technology, Jashore, Bangladesh Abstract Being largely dependent on agriculture, the overall development and water resource management of Bangladesh are greatly influenced by the accurate estimation of precipitation. Different satellite derived precipitation products, covering a large area, are very useful for rainfall estimation. In this study, three different satellite precipitation datasets namely Climate Prediction Cen- ter MORPHING (CMORPH), the global Satellite Mapping of Precipitation (GSMaP), and the Integrated Multi-satellitE Retrievals for GPM (IMERG) daily data are spatially analyzed and compared with the observed rainfall data from 20 th May 2020 to 21 st May 2020. It is observed that the satellite products matched well with the observed data set but the amount varied. Also, the spa- tial distribution of CMORPH and GSMaP with the observed precipitation is represented for 02 May 2019. Keywords CMORPH, IMERG, GSMaP 1. Introduction In developing countries like Bangladesh, many human activities and socio-economic stability are strongly influenced by the availability and variability of precipitation (UN, 2009). Rainfall data plays a very important role in weather forecasting and in various climate studies. With its good temporal and spatial coverage, rainfall da- ta help to make decisions regarding hydrological matters as it is the main input in hydrological models. Precipitation is also crucial in water resources planning and management, and directly links to agriculture, disaster mitigation, and pre- paredness. How to cite this paper: Roy, D., & Banu, S. (2021). Comparison of Satellite Derived Rainfall Estimations: CMORPH, IMERG and GSMaP with Observed Precipitation. American Journal of Climate Change, 10, 407-421. https://doi.org/10.4236/ajcc.2021.104021 Received: November 4, 2021 Accepted: November 26, 2021 Published: November 29, 2021 Copyright © 2021 by author(s) and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access