He was a lead author of the chapter on Adaptation and Sustainable Development in the Third Assessment Report of the Intergovernmental Panel on Climate Change (IPCC), and was one of two coordinating lead authors of 'Inter-relationships between adaptation and mitigation' in the IPCC's Fourth Assessment Report (2007).

Huq attended all sessions of the Conference of the Parties (COP) to the United Nations Framework Convention on Climate Change (UNFCCC) up to his death.

[4] Huq was appointed Officer of the Order of the British Empire (OBE) in the 2022 New Year Honours for services to combating international climate change.

He was founding director of the International Centre for Climate Change and Development at the Independent University, Bangladesh.

He was the lead author of the chapter on Adaptation and Sustainable Development in the third assessment report of the Intergovernmental Panel on Climate Change (IPCC).