气候变化领域集成服务门户(CCPortal): Sensitivity of tropical cyclones to convective parameterization schemes in RegCM4

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DOI	10.1007/s00382-020-05553-3
	Sensitivity of tropical cyclones to convective parameterization schemes in RegCM4
	Villafuerte M.Q.; II; Lambrento J.C.R.; Hodges K.I.; Cruz F.T.; Cinco T.A.; Narisma G.T.
发表日期	2021
ISSN	0930-7575
卷号	56 期号:2021-05-06
英文摘要	This study investigates the sensitivity of simulated tropical cyclones (TC) affecting the Philippines to convective parameterization schemes (CPS) in the Regional Climate Model Version 4 (RegCM4). Five ERA-Interim driven RegCM4 simulations at 25-km horizontal resolution were conducted utilizing the CPS of Grell with Arakawa–Schubert closure (GR), Emanuel (EM), Kain–Fritsch (KF), Tiedtke (TE), and a combined Grell scheme over land and Emanuel over the ocean (GR-EM). Comparisons made between the observed and RegCM4-simulated TCs covering a 30-year period (1981–2010) indicate that the EM scheme yields an annual-mean TC frequency that is closest to observations. The GR-EM scheme, on the other hand, closely reproduces the observed seasonal patterns of TC tracks, spatial patterns of TC track density and TC-associated rainfall, and TC lifespan. The KF scheme is the only CPS that was able to simulate intense TCs (maximum wind speed > 40 m s–1) within the domain. In contrast, both GR and TE schemes largely underestimated the TC frequency, and were only able to simulate weak TCs. Such underestimation in the TC frequency and intensity in the GR and TE simulations can be attributed to the dry mid-tropospheric environment and the absence of a large area with positive low-level relative vorticity over the Pacific Ocean inhibiting TC formation and further development over the area. These findings would be helpful in selecting the more appropriate CPS for TC-related model simulations over the Philippines and in further model improvements, given the climate modeling imperfections and associated biases. © 2021, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Regional climate modeling; Sensitivity experiments; The Philippines; Tropical cyclones; Western North Pacific
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183373
作者单位	Department of Science and Technology, Philippine Atmospheric, Geophysical and Astronomical Services Administration (DOST-PAGASA), BIR Road, Brgy. Central, Quezon City, 1100, Philippines; Manila Observatory, Ateneo de Manila University Campus, Quezon City, Philippines; Department of Meteorology, University of Reading, Reading, United Kingdom; Atmospheric Science Program, Physics Department, Ateneo de Manila University, Quezon City, Philippines
推荐引用方式 GB/T 7714	Villafuerte M.Q.,II,Lambrento J.C.R.,et al. Sensitivity of tropical cyclones to convective parameterization schemes in RegCM4[J],2021,56(2021-05-06).
APA	Villafuerte M.Q..,II.,Lambrento J.C.R..,Hodges K.I..,Cruz F.T..,...&Narisma G.T..(2021).Sensitivity of tropical cyclones to convective parameterization schemes in RegCM4.Climate Dynamics,56(2021-05-06).
MLA	Villafuerte M.Q.,et al."Sensitivity of tropical cyclones to convective parameterization schemes in RegCM4".Climate Dynamics 56.2021-05-06(2021).