气候变化领域集成服务门户(CCPortal): Multi-scale interactions in a high-resolution tropical-belt experiment and observations

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DOI	10.1007/s00382-018-4332-y
	Multi-scale interactions in a high-resolution tropical-belt experiment and observations
	Fonseca R.; Koh T.-Y.; Teo C.-K.
发表日期	2019
ISSN	0930-7575
起始页码	3503
结束页码	3532
卷号	52 期号:2020-05-06
英文摘要	The Weather Research and Forecasting (WRF) model is used to dynamically downscale 27 years of the Climate Forecast System Reanalysis (CFSR) in a tropical belt configuration at 36 km horizontal grid spacing. WRF is found to give a good rainfall climatology as observed by the Tropical Rainfall Measuring Mission (TRMM) and to reproduce well the large-scale circulation and surface radiation fluxes. The impact of conventional and Modoki-type El Niño–Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD) are confirmed by linear regression. Madden–Julian Oscillation (MJO) and Boreal Summer Intra-seasonal Oscillation (BSISO) are also well-simulated. The WRF simulation shows that conventional El Niño increases (La Niña decreases) the MJO amplitude in the boreal summer while Modoki-type ENSO and IOD impacts are MJO-phase dependent. While WRF is found to perform well on seasonal to sub-seasonal timescales, it does not capture well the diurnal cycle of precipitation over the Maritime Continent. For the investigation of multi-scale interactions through the local diurnal cycle, TRMM data is used instead. In the Maritime Continent, moderate El Niño and La Niña causes anti-symmetric enhancement/reduction of the MJO’s influence on the diurnal cycle amplitudes with little change in the diurnal phase. Non-linear impacts on the diurnal amplitude with changes in diurnal phase manifest during strong ENSO. Given that the simulation does not employ data assimilation, this modified version of WRF submitted to the model developers is a suitable downscaling tool of CFSR for sub-seasonal to seasonal tropical atmospheric research. © 2018, The Author(s).
语种	英语
scopus关键词	atmospheric dynamics; computer simulation; downscaling; El Nino-Southern Oscillation; experimental study; Indian Ocean Dipole; Madden-Julian oscillation; numerical model; resolution; TRMM; tropical meteorology; weather forecasting; Indian Ocean; Indian Ocean (West); Pacific Ocean; Southeast Asia
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/146450
作者单位	Division of Space Technology, Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology, Luleå, Sweden; UC, Singapore University of Social Sciences, Singapore, Singapore; Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore; Centre for Climate Research Singapore, Meteorological Services Singapore, Singapore, Singapore; Centre for Applied Research, Singapore University of Social Sciences, Singapore, Singapore
推荐引用方式 GB/T 7714	Fonseca R.,Koh T.-Y.,Teo C.-K.. Multi-scale interactions in a high-resolution tropical-belt experiment and observations[J],2019,52(2020-05-06).
APA	Fonseca R.,Koh T.-Y.,&Teo C.-K..(2019).Multi-scale interactions in a high-resolution tropical-belt experiment and observations.Climate Dynamics,52(2020-05-06).
MLA	Fonseca R.,et al."Multi-scale interactions in a high-resolution tropical-belt experiment and observations".Climate Dynamics 52.2020-05-06(2019).