I have searched some of the top ranking nationalism studies journals (Nations and nationalism, SEN -Studies of ethnicity and nationalism, Nationalism and ethnic politics, Ethnicities, Ethnopolitics) and couldn't find any article even touching the complex relationship between nationalism and climate change.
I have only found a small number of mostly circumstantial (casual) mentions of climate change according to the following distribution:
Nations and Nationalism: 8 mentions (including a roundtable, book reviews and an introductory piece written by me).
SEN: 3 mentions (one political theory article, two case studies)
Nationalism and Ethnic Politics: 3 mentions (all case studies) Ethnicities: 2 mentions (2 theoretical articles)
Studies in Ethnicity and Nationalism: 2 mentions (including a 2009 article)
Even more worryingly, I have found no mentions of the geo-historical concept of Anthropocene, nor any of its more controversial derivates (Capitalocene, Occidentalocene, Consumerocene, and so on), despite the fact that these have been introduced and debated in nearly all the social sciences.