2014 – 2017
Dipayan completed an outstanding PhD funded through a BoM and State Water supported ARC Linkage project and supervised by Alex Sen-Gupta from the CCRC in addition to Raj, Sivakumar and Ashish, looking at how rainfall can be predicted at decadal time-scales. This was one of the first PhDs to ever look at using CMIP5 decadal model simulations, removing known biases these contained (model drift) and formulating stable alternatives for rainfall keeping in mind the not-so-strong link there exists in such model simulations and rain especially as they simulate further and further into the future and away from their specified initial conditions.
The published papers from Dipayan's PhD include:
- Choudhury, D., A. S. Gupta, A. Sharma, R. Mehrotra, and B. Sivakumar (2017), An assessment of drift correction alternatives for CMIP5 decadal predictions, Journal of Geophysical Research: Atmospheres.
Impacts of the tropical trans-basin variability on Australian rainfall, Climate Dynamics, 1-13.
- Choudhury, D., A. S. Gupta, A. Sharma, A. S. Taschetto, R. Mehrotra, and B. Sivakumar (2017), Impacts of the tropical trans-basin variability on Australian rainfall, Climate Dynamics, 49(5-6), 1617-1629.
- Choudhury, D., A. Sharma, A. Sen Gupta, R. Mehrotra, and B. Sivakumar (2016), Sampling biases in CMIP5 decadal forecasts, Journal of Geophysical Research-Atmospheres, 121(7), 3435-3445.
- Choudhury, D., A. Sharma, B. Sivakumar, A. S. Gupta, and R. Mehrotra (2015), On the predictability of SSTA indices from CMIP5 decadal experiments, Environ Res Lett, doi:10.1088/1748-9326/10/7/074013.