The extraordinarily large vortex structure of Typhoon In-fa (2021), observed by spaceborne microwave radiometer and synthetic aperture radar

Sun, Zhian; Bai, Lei; Zhu, Xuesong; Huang, Xin; Jin, Rui; Yu, Hongbin; Tang, Jie

doi:10.1016/j.atmosres.2023.106837

Cited by 3 publications

(1 citation statement)

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“…Typhoon In-Fa (the sixth typhoon in 2021, After In-Fa) formed over the northwestern Pacific Ocean at 02:00 Beijing Time (BT) on 18 July [19][20][21][22]. On the morning of 19 July, it developed into a severe tropical storm, and then on 20 July, it turned into a typhoon.…”

Section: Description Of Typhoon In-fa (2021)mentioning

confidence: 99%

Improved Gravity Wave Drag to Enhance Precipitation Simulation: A Case Study of Typhoon In-Fa

Liu,

Yu,

et al. 2023

Atmosphere

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Traditional gravity wave drag parameterizations produce wind stresses that are insensitive to changing horizontal resolution in numerical weather prediction (NWP), partly due to the idealized elliptical assumption. This study employs the modified subgrid-scale orography scheme based on the Fourier transform into gravity wave drag scheme of the China Meteorological Administration Global Forecast System (CMA-GFS) to assess its impacts on simulating precipitation during the slow-moving period of Typhoon In-Fa after its landfall in Zhejiang Province, China. The simulation with the updated scheme can effectively reduce the accumulated precipitation bias of the control one and improve the simulation of precipitation distribution and intensity, especially in the hourly precipitation simulation. The improved scheme primarily influences the wind field of the low-level troposphere and also changes the convergence of the integrated water vapor transport and ascending motions related to the reduced precipitation biases. The modified scheme enhances the tendencies of the horizontal winds caused by the varying horizontal resolutions in the model, strengthening the sensitivity of the gravity wave drag across the horizontal scales. Results from medium-range forecasts indicate the modified scheme benefits the statistics scores of precipitation over China and also reduces root-mean-square errors of 2 m temperature and 10 m winds.

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Section: Description Of Typhoon In-fa (2021)mentioning

confidence: 99%