পদ্ধতির তুলনা করুন

	General Circulation Model	HEC-RAS
ক্ষেত্র	ভূপদার্থবিজ্ঞান	ভূপদার্থবিজ্ঞান
পরিবার	Process / pipeline	Process / pipeline
উদ্ভবের বছর	1975	1995
প্রবর্তক	Syukuro Manabe and Richard Wetherald	US Army Corps of Engineers Hydrologic Engineering Center
ধরন	Deterministic coupled atmosphere-ocean simulation	1D/2D river hydraulics and flood inundation modeling
মৌলিক উৎস	Manabe, S., & Wetherald, R. T. (1975). The effects of doubling the CO2 concentration on the climate of a general circulation model. Journal of the Atmospheric Sciences, 32(1), 3-15.	Brunner, G. W. (2010). HEC-RAS river analysis system hydraulic reference manual. US Army Corps of Engineers Hydrologic Engineering Center.
অপর নাম	GCM, Global Climate Model	HEC-RAS
সম্পর্কিত	3	3
সারসংক্ষেপ	A General Circulation Model (GCM), also called a Global Climate Model, is a three-dimensional numerical representation of the Earth's atmosphere, oceans, ice, and land surface that simulates physical processes governing weather and climate. Pioneered by Manabe and Wetherald in 1975, GCMs are the primary tools for understanding past climate, projecting future climate change, and investigating climate sensitivity to greenhouse gases and other forcings.	HEC-RAS (Hydrologic Engineering Center River Analysis System) is a hydraulic modeling software developed by the US Army Corps of Engineers that computes water surface elevation and velocity in open channels and floodplains, and depicts inundation extent and depth. Since its introduction in 1995, HEC-RAS has become the de facto standard for floodplain delineation, dam break analysis, and flood risk assessment for regulatory and engineering purposes.