Much of his work has focused on responding to sea-level rise and climate change, necessitating an interdisciplinary approach.
A distinctive dimension has been consideration of the coastal zone in system terms, facilitating policy analysis.
He has led a series of large multi-million pound projects including the Tyndall Coastal Simulator, the NERC-funded iCOASST (Evolving coastal geomorphic sediment systems), the ESPA Deltas[5][6] and DECCMA projects on deltas, mainly in Bangladesh.
He co-led the World Climate Research Programme Sea-Level Rise Grand Challenge[13] from 2014 to 2022 to deliver sea-level science to support better coastal impact[14] and adaptation assessment, organising the Sea Level 2017 and Sea Level 2022 Conferences in New York and Singapore, respectively.
[15] In 2007, Robert Nicholls was the convening lead author for the coastal chapter for the Intergovernmental Panel on Climate Change[16] (IPCC) fourth assessment report.