Data assimilation using Ensemble Transform Kalman Filter (ETKF) in ROMS model for Indian OceanMd. Nurujjaman, A. Apte and P. VinayachandranEur. Phys. J. Special Topics, 222 3-4 (2013) 875-883DOI: https://doi.org/10.1140/epjst/e2013-01890-3