Impact of the moisture and land surface processes on the sustenance of the cyclonic storm Yemyin over land using the WRF-ARW model

Nellipudi, Nanaji Rao; Ramakrishna, S. S. V. S.; Podeti, Srinivasa Rao; Rao, B. R. Srinivasa; Yesubabu, V.; Rao, V. Brahmananda

doi:10.1007/s11069-022-05399-4

Cited by 2 publications

(1 citation statement)

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“…Mohan et al [17] utilized WRF to analyze 10 TCs in the BoB at 9 km and 3 km horizontal resolution using cumulus convective parameterization and explicit convection, respectively, and found that the latter simulation performed better. Land surface processes and soil moisture can also influence the simulation of TC track and intensity after landfall [18], with Noah and RUC schemes being able to simulate the BoB TC 'Yemyin (2007)' better, whereas soil moisture at zero was not conducive to Yemyin's development and maintenance [19]. There was additional research evaluating the ability of various initial conditions, cumulus convection schemes, and boundary layer schemes to mimic TCs in the BoB [20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

How Well Does Weather Research and Forecasting (WRF) Model Simulate Storm Rashmi (2008) Itself and Its Associated Extreme Precipitation over the Tibetan Plateau at the Same Time?

An,

Li,

et al. 2023

Atmosphere

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Northward tropical cyclones over the Bay of Bengal (BoB TCs) often interact with atmospheric circulation, transporting large amounts of water vapor to the Tibetan Plateau (TP), causing extreme precipitation. The BoB surrounded by land on three sides and the complex topography of the TP bring challenges to implementing numerical simulation in these regions. However, the scarcity of data in the two areas makes it necessary to find a technological process to perform practicable numerical simulations on the BoB TC and its induced extreme precipitation to carry out further research. In this study, the WRF 3.9.1 is used to perform many simulation experiments on a northward BoB TC Rashmi (2008) from 24 to 27 October 2008 associated with a record-breaking extreme precipitation on the TP, indicating that the selection of the simulation region, the source of initial-boundary conditions, and the cumulus convection schemes are three important factors influencing the results. We examined and compared the simulation of Rashmi with 10 experiments that were generated by combining The Final Operational Global Analysis (FNL) reanalysis data and the European Centre for Medium-Range Weather Forecasting 5(th) generation reanalysis (ERA5) data as initial-boundary conditions with five cumulus convection schemes. Most of the experiments can predict Rashmi and precipitation in the TP to a certain degree, but present different characteristics. Compared with FNL, the ERA5 performs well regarding Rashmi’s intensity and thermal structure but overestimates Rashmi’s moving speed. For the extreme precipitation in the TP, experiments suffice to reproduce the heavy rainfall (>25 mm/day) in the TP, with TS and ETS scores above 0.3 and most HSS scores greater than 0.4. The optimal experiments of three stations with extreme precipitation deviated from the actual precipitation by less than 15%. The ERA5 TDK scheme is recommended as the optimal solution for balancing the simulation of Rashmi and its extreme precipitation in the TP.

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