Biography

I am a Senior Research Associate in the in the Climatic Research Unit (CRU) at the University of East Anglia. My research interests are on climate variability and teleconnection, Asian summer monsoon, regional climate modelling and extreme weather events.

I have completed a M.Sc degree in Oceanography and M.Tech. Degree in Atmospheric Sciences. In 2009, I received Ph.D. in Meteorology from the Department of Meteorology and Oceanography, Andhra University, India. My Ph.D. research was on the simulation of Indian summer monsoon phenomenon using mesoscale and regional climate models.

Just before the completion of my PhD, I joined as a researcher in the Atmospheric Sciences Team of the Centre for Development of Advanced Computing (CDAC), Pune, India and invoved on seasonal prediction of Indian summer monsoon using high resolution atmospheric general circulation models.

In 2010, I have moved to Japan to join as a postdoctoral researcher at the Japan Agency for Marine-Earth Science and Technology (JAMSTEC), in a collaborative research project between Japan and South Africa. During this period, I have visited several research centers and universities in South Africa for the collaborative research work.

In May, 2013 I have joined as a Junior Scientist in the Numerical Applications and Scenarios (ANS) Division of the Euro-Mediterranean Center on Climate Change (CMCC), Bologna, Italy. At CMCC, I was mainly involved in research on the Indian Ocean warming and its relationship with the Indian summer monsoon and related teleconnections under the INDO-MARECLIM project.

At the end of 2014, I have moved to Japan for the 2nd time to work as a project Scientist in the same organization, Japan Agency for Marine-earth Science and Technology (JAMSTEC) and continued there until early 2017.

All Publications

B, A., Cherchi, A., Ratna, S. B.

(2018)

ENSO and the recent warming of the Indian Ocean,

in International Journal of Climatology

38

(1)

pp. 203–214

Full Text UEA Repository

(Article)

(Published)


Ratnam, J. V., Behera, S. K., Krishnan, R., Doi, T., Ratna, S. B.

(2017)

Sensitivity of Indian summer monsoon simulation to physical parameterization schemes in the WRF model,

in Climate Research

74

(1)

pp. 43-66

Full Text UEA Repository

(Article)

(Published)


Ratna, S. B., Ratnam, J., Behera, S. K., Cherchi, A., Wang, W., Yamagata, T.

(2017)

The unusual wet summer (July) of 2014 in Southern Europe,

in Atmospheric Research

189

pp. 61-68

Full Text UEA Repository

(Article)

(Published)


Ratna, S. B., Ratnam, J. V., Behera, S. K., Tangang, F. T., Yamagata, T.

(2017)

Validation of the WRF regional climate model over the subregions of Southeast Asia: climatology and interannual variability,

in Climate Research

71

(3)

pp. 263-280

Full Text UEA Repository

(Article)

(Published)


Ratnam, J. V., Behera, S. K., Annamalai, H., Ratna, S. B., Rajeevan, M., Yamagata, T.

(2016)

ENSO’s far reaching connection to Indian cold waves,

in Scientific Reports

6

(1)

article no. 37657

Full Text UEA Repository

(Article)

(Published)


Ratnam, J. V., Behera, S. K., Ratna, S. B., Rajeevan, M., Yamagata, T.

(2016)

Anatomy of Indian heatwaves,

in Scientific Reports

6

article no. 24395

Full Text UEA Repository

(Article)

(Published)


Ratna, S. B., Cherchi, A., Joseph, P. V., Behera, S. K., Abish, B., Masina, S.

(2016)

Moisture variability over the Indo-Pacific region and its influence on the Indian summer monsoon rainfall,

in Climate Dynamics

46

(3)

pp. 949-965

Full Text UEA Repository

(Article)

(Published)


Ratna, S. B., Ratnam, J. V., Behera, S. K., Rautenbach, C. J. D., Ndarana, T., Takahashi, K., Yamagata, T.

(2014)

Performance assessment of three convective parameterization schemes in WRF for downscaling summer rainfall over South Africa,

in Climate Dynamics

42

(11)

pp. 2931-2953

Full Text UEA Repository

(Article)

(Published)


Ratnam, J. V., Behera, S. K., Ratna, S. B., Rautenbach, C. J. D. W., Lennard, C., Luo, J., Masumoto, Y., Takahashi, K., Yamagata, T.

(2013)

Dynamical Downscaling of Austral Summer Climate Forecasts over Southern Africa Using a Regional Coupled Model,

in Journal of Climate

26

(16)

pp. 6015-6032

Full Text UEA Repository

(Article)

(Published)


Ratna, S. B., Behera, S., Ratnam, J. V., Takahashi, K., Yamagata, T.

(2013)

An index for tropical temperate troughs over southern Africa,

in Climate Dynamics

41

(2)

pp. 421-441

Full Text UEA Repository

(Article)

(Published)


Dodla, V. B. R., Ratna, S. B., Desamsetti, S.

(2013)

An assessment of cumulus parameterization schemes in the short range prediction of rainfall during the onset phase of the Indian Southwest Monsoon using MM5 Model,

in Atmospheric Research

120-121

pp. 249-267

Full Text UEA Repository

(Article)

(Published)


Badrinath, K., Mahalakshmi, D., Bishoyi Ratna, S.

(2012)

Influence of Land Use Land Cover on Cyclone Track Prediction – A Study During Aila Cyclone,

in Open Atmospheric Science Journal

6

pp. 33-41

Full Text UEA Repository

(Article)

(Published)


Ratna, S. B.

(2012)

Summer Monsoon Rainfall Variability Over Maharashtra, India,

in Pure and Applied Geophysics

169

(1-2)

pp. 259-273

Full Text UEA Repository

(Article)

(Published)


Ratna, S. B., Sikka, D. R., Dalvi, M., Venkata Ratnam, J.

(2011)

Dynamical simulation of Indian summer monsoon circulation, rainfall and its interannual variability using a high resolution atmospheric general circulation model,

in International Journal of Climatology

31

(13)

pp. 1927-1942

Full Text UEA Repository

(Article)

(Published)


Sikka, D. R., Bishoyi Ratna, S.

(2011)

On improving the ability of a high-resolution atmospheric general circulation model for dynamical seasonal prediction of the extreme seasons of the Indian summer monsoon,

in Mausam

62

(3)

pp. 339-360

Full Text UEA Repository

(Article)

(Published)


Dodla, V. B. R., Ratna, S. B.

(2010)

Mesoscale characteristics and prediction of an unusual extreme heavy precipitation event over India using a high resolution mesoscale model,

in Atmospheric Research

95

(2-3)

pp. 255-269

Full Text UEA Repository

(Article)

(Published)


Bhaskar Rao, D. V., Srinivas, D., Bishoyi Ratna, S.

(2008)

Regional scale prediction of the onset phase of the Indian southwest monsoon with a high-resolution atmospheric model,

in Atmospheric Science Letters

9

(4)

pp. 237-244

Full Text UEA Repository

(Article)

(Published)