Open University (OU) researchers from the School of Environment Earth and Ecosystems in the Faculty of Science, Technology, Engineering and Mathematics, Drs Katrina Nilsson-Kerr (previous OU PhD student), Pallavi Anand (project lead) and Philip Holden, carried out an integrated data-model study to show that differences in the large-scale tropical rainfall pattern, including monsoon, are sensitive to climatic changes, thousands of years ago.
Research findings from the project have been published (“Dipole patterns in tropical precipitation were pervasive across landmasses throughout Marine Isotope Stage 5”) in Communications Earth and Environment (Nature).
The paper provides the first detailed rainfall pattern assessment of the tropical landmasses, including new data for the core Indian Summer Monsoon region, showing extensive presence of contrasting pairs (a ‘dipole’) of tropical rainfall across landmasses in response to climate warming.
The samples for the study was collected by Dr Anand following an International Ocean Drilling Programme (IODP) voyage to the Bay of Bengal in 2014-15 to better understand historical variability of the Indian Monsoon in response to changing climate. The discovery was made by an international research team, led by OU researchers in collaboration with the British Geological Survey (UK) and Brown University (USA). The project was funded by the National Environment Research Council.
Follow the link to read the news story shared at https://www.open.ac.uk/research/news/research-shows-how-rainfall-responded-past-climate-change
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