气候变化领域集成服务门户(CCPortal): Benefits of explicit urban parameterization in regional climate modeling to study climate and city interactions

CCPortal

DOI	10.1007/s00382-018-4289-x
	Benefits of explicit urban parameterization in regional climate modeling to study climate and city interactions
	Daniel M.; Lemonsu A.; Déqué M.; Somot S.; Alias A.; Masson V.
发表日期	2019
ISSN	0930-7575
起始页码	2745
结束页码	2764
卷号	52 期号:2020-05-06
英文摘要	Most climate models do not explicitly model urban areas and at best describe them as rock covers. Nonetheless, the very high resolutions reached now by the regional climate models may justify and require a more realistic parameterization of surface exchanges between urban canopy and atmosphere. To quantify the potential impact of urbanization on the regional climate, and evaluate the benefits of a detailed urban canopy model compared with a simpler approach, a sensitivity study was carried out over France at a 12-km horizontal resolution with the ALADIN-Climate regional model for 1980–2009 time period. Different descriptions of land use and urban modeling were compared, corresponding to an explicit modeling of cities with the urban canopy model TEB, a conventional and simpler approach representing urban areas as rocks, and a vegetated experiment for which cities are replaced by natural covers. A general evaluation of ALADIN-Climate was first done, that showed an overestimation of the incoming solar radiation but satisfying results in terms of precipitation and near-surface temperatures. The sensitivity analysis then highlighted that urban areas had a significant impact on modeled near-surface temperature. A further analysis on a few large French cities indicated that over the 30 years of simulation they all induced a warming effect both at daytime and nighttime with values up to + 1.5 °C for the city of Paris. The urban model also led to a regional warming extending beyond the urban areas boundaries. Finally, the comparison to temperature observations available for Paris area highlighted that the detailed urban canopy model improved the modeling of the urban heat island compared with a simpler approach. © 2018, The Author(s).
英文关键词	ALADIN; City and climate interactions; Regional climate model; TEB; Urban heat island; Urban parameterization
语种	英语
scopus关键词	climate modeling; heat island; land use; numerical model; parameterization; regional climate; solar radiation; urban climate; France; Ile de France; Paris; Ville de Paris
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/146492
作者单位	Météo-France/CNRS, National Center for Meteorological Resarch, 42 avenue Gaspard Coriolis, Toulouse cedex, 31057, France
推荐引用方式 GB/T 7714	Daniel M.,Lemonsu A.,Déqué M.,et al. Benefits of explicit urban parameterization in regional climate modeling to study climate and city interactions[J],2019,52(2020-05-06).
APA	Daniel M.,Lemonsu A.,Déqué M.,Somot S.,Alias A.,&Masson V..(2019).Benefits of explicit urban parameterization in regional climate modeling to study climate and city interactions.Climate Dynamics,52(2020-05-06).
MLA	Daniel M.,et al."Benefits of explicit urban parameterization in regional climate modeling to study climate and city interactions".Climate Dynamics 52.2020-05-06(2019).