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Impact of microphysics schemes in the simulation of cyclone hudhud using WRF-ARW model

Douluri, DL and Annapurnaiah, K (2016) Impact of microphysics schemes in the simulation of cyclone hudhud using WRF-ARW model. International Journal of Oceans and Oceanography, 10 (1). pp. 49-59.

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Abstract

A Very Severe Cyclonic Strom (VSCS) "Hudhud" crossed Andhra coast near Visakhapatnam on 12th October 2014 and caused significant damage to property due to both wind and surge. In the present study, an attempt is made to simulate and test the capability of the state of art Advanced Research Weather Research and Forecasting (WRF-ARW) model in capturing the wind intensity and track of cyclone accurately. The simulation has been carried out using three domains with a horizontal resolution of 27 km for domain 1, 9 km for domain 2 and 3 km for domain 3. Multiple simulations using initial conditions (NCEP FNL) at an interval of 6 hours, same cumulus parameterization and time integration schemes but with different microphysics schemes are carried out. The main source of energy for tropical cyclone is the latent hear release (convective heating) in clouds, which depend on microphysical processes and the released dynamical properties. The objective of the present study is to find out the best microphysics for accurate simulation of intensity and track of tropical cyclone at high model domain resolution towards storm surge studies. The best performance was found for the model integrated for 48 hours starting from 10th October 2014 to 12th October 2014. Simulated features include (track, maximum sustained wind, sea level pressure and rainfall) were compared with IMD best track data and it was observed that simulations with WRF LIN microphysics scheme compare well with observations. Other synoptic features of rainfall was also simulated and discussed in relation to model performance. Overall this study gives emphasis on the studies towards sensitivity analysis of microphysics parameterization using WRF simulations at high model grid resolution (3 km) to imply towards storm surge applications in Bay of Bengal.

Item Type: Article
Additional Information: Copyright of this article belongs to Research India Publications
Uncontrolled Keywords: Bay of Bengal;Tropical cyclone;Mesoscale model;Microphysics, Maximum sustained wind speed;Sea Level Pressure;Rainfall
Subjects: Meteorology and Climatology
Oceanography > oceanography
Depositing User: INCOIS Library
Date Deposited: 26 Apr 2016 06:19
Last Modified: 26 Apr 2016 06:19
URI: http://moeseprints.incois.gov.in/id/eprint/3790

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