Kolusu, SR orcid.org/0000-0002-6090-5624, Prasanna, V and Preethi, B (2014) Simulation of Indian summer monsoon intra-seasonal oscillations using WRF regional atmospheric model. International Journal of Earth and Atmospheric Science, 1 (1). 4. pp. 35-53. ISSN 2349-9222
Abstract
The present study examines the mean features of Indian summer monsoon and the boreal summer intra-seasonal oscillations (BSISO) as simulated by the Weather Research and Forecasting (WRF) regional atmospheric model. For this the WRF model at 30-km horizontal resolution is forced with NCEP-II reanalysis as the initial and boundary condition and integrated for a period of 8 years. The simulated results are compared with TRMM rainfall as well as with the reanalysis datasets of NCEP-II and ERA-Interim. Analysis reveals that the WRF model is able to reproduce the observed characteristics of large scale mean features and spatial variations of rainfall and winds at 850hPa and 200hPa. The northward propagating intra-seasonal oscillation (ISO) components over the monsoon trough and the equatorial Indian Ocean is reasonably simulated by the WRF model and shows some promise in understanding the regional characteristics of Indian summer monsoon and its ISO components. WRF model can act as suitable tool for predicting the ISO's over the Indian summer monsoon region. Further, the results presented here suggests that reanalysis with a realistic basic state and proper representation of northward moving ISO's is required to force a regional model. This study elucidate the WRF regional model has shown a reasonable representation of BSISO.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014 Jakraya Publications (P) Ltd. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Indian summer monsoon; Intra-seasonal oscillation; WRF model |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 17 Jun 2016 11:58 |
Last Modified: | 17 Jun 2016 11:58 |
Published Version: | http://jakraya.com/journal/pdf/1-ijeasArticle_4.pd... |
Status: | Published |
Publisher: | Jakraya Publications |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:98277 |