I take it we're talking people here?

I'd say the nature is varied, and generally pretty nasty.

Have you read this paper:

Climate change-induced migration and violent conflict ( http://130.238.7.16/h/heax7669/Samh%E4llets%20Geografi/Artiklar/Reuveny.pdf ) ?

There's a large table of migrations with climate change as a factor on pages 663 and 664. The aspect of climate change that influences the migration are quite various, but water scarcity is a very common theme, especially in the instances that are associated with conflict.

I take it we're talking people here?

I'd say the nature is varied, and generally pretty nasty.

Have you read this paper:

Climate change-induced migration and violent conflict ( http://130.238.7.16/h/heax7669/Samh%E4llets%20Geografi/Artiklar/Reuveny.pdf ) ?

There's a large table of migrations with climate change as a factor on pages 663 and 664. The aspect of climate change that influences the migration are quite various, but water scarcity is a very common theme, especially in the instances that are associated with conflict.

http://ftp.iza.org/dp5927.pdf

https://publications.iom.int/system/files/pdf/migration_and_environment.pdf

http://eprints.lse.ac.uk/64526/1/Climate-change-and-migration-in-developing-countries_final.pdf