IITM-ESM is an indigenous climate model developed by the scientists at Indian Institute of Tropical Meteorology (IITM), an institute under the Ministry of Earth Sciences in collaboration with the international research community. The Earth System Model (ESM) consists of components concerning atmosphere, ocean (including deep ocean circulation), Arctic and Antarctic sea ice and ocean biochemistry.
The Earth System Model is the first climate model from South Asia that contributed to the Intergovernmental Panel on Climate Change (IPCC) sixth assessment report. It also participated in the sixth phase of the Coupled Model Inter-comparison Project.

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