There have been no observed instances of migration within the country that are directly attributable in any substantial measure to global warming of anthropogenic origin. Migration patterns continue to be monitored by various Central and State governments in the work of several government departments and through the work of many government and non-government agencies, academics and civil society organisations.
This was stated by the Minister of State in the Ministry of Environment, Forest and Climate Change, answering a question on migration due to climate change in India.
Links:
[1] http://admin.indiaenvironmentportal.org.in/reports-documents/question-raised-rajya-sabha-migration-due-climate-change-03022020
[2] http://www.indiaenvironmentportal.org.in/files/file/Migration-climate-change.pdf
[3] http://admin.indiaenvironmentportal.org.in/category/publisher/rajya-sabha
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-impacts
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/migration
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rajya-sabha
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/parliament