• Open Access

Study of the Indian summer monsoon using WRF–ROMS regional coupled model simulations

Authors

  • Basanta Kumar Samala,

    Corresponding author
    • Computational Earth Science Group, Center for Development of Advanced Computing, Pune University Campus, Ganeshkhind, Pune, India
    Search for more papers by this author
  • Nagaraju C,

    1. Computational Earth Science Group, Center for Development of Advanced Computing, Pune University Campus, Ganeshkhind, Pune, India
    Search for more papers by this author
  • Sudipta Banerjee,

    1. Computational Earth Science Group, Center for Development of Advanced Computing, Pune University Campus, Ganeshkhind, Pune, India
    Search for more papers by this author
  • Akshara Kaginalkar,

    1. Computational Earth Science Group, Center for Development of Advanced Computing, Pune University Campus, Ganeshkhind, Pune, India
    Search for more papers by this author
  • Mohit Dalvi

    1. Computational Earth Science Group, Center for Development of Advanced Computing, Pune University Campus, Ganeshkhind, Pune, India
    2. Met Office Hadley Centre, Exeter, Devon, UK
    Search for more papers by this author

Correspondence to: B. K. Samala, C-DAC Computational Earth Science Group, C-DAC Main Building, Pune University Campus, Ganeshkhind, Pune, Maharashtra 411027, India.

E-mail: basanta106@gmail.com; basanta106@yahoo.com

Abstract

A coupled regional atmosphere–ocean modeling system is developed using the existing regional models WRF (Weather Research and Forecasting) and ROMS (Regional Ocean Modeling System) to study the influence of air–sea interactions on the simulation of the Indian summer monsoon (ISM). The two-way coupled regional model exchanges heat fluxes from atmosphere to ocean model and sea surface temperature (SST) from ocean to atmospheric model. The coupled model is used to simulate from May to September of ISM months of each year from 2000–2007, and the results are compared with observations and standalone atmospheric and oceanic models. The results show that the coupling improves the simulation of the Indian summer monsoon seasonal rainfall as well as the intra-seasonal oscillations of the rainfall. Copyright © 2012 Royal Meteorological Society

Ancillary