气候变化领域集成服务门户(CCPortal): Radiation and cloud-base lowering fog events: Observational analysis and evaluation of WRF and HARMONIE

CCPortal

DOI	10.1016/j.atmosres.2019.06.018
	Radiation and cloud-base lowering fog events: Observational analysis and evaluation of WRF and HARMONIE
	Román-Cascón C.; Yagüe C.; Steeneveld G.-J.; Morales G.; Arrillaga J.A.; Sastre M.; Maqueda G.
发表日期	2019
ISSN	0169-8095
起始页码	190
结束页码	207
卷号	229
英文摘要	Most of the effects caused by fog are negative for humans. Yet, numerical weather prediction (NWP) models still have problems to simulate fog properly, especially in operational forecasts. In the case of radiation fog, this is partially caused by the large sensitivity to many aspects, such as the synoptic and local conditions, the near-surface turbulence, the aerosol and droplet microphysics, or the surface characteristics, among others. This work focuses on an interesting 8-day period with several alternating radiation and cloud-base lowering (CBL) fog events observed at the Research Centre for the Lower Atmosphere (CIBA) in the Spanish Northern Plateau. On the one hand, radiation fog events are associated with strong surface cooling leading to high stability close to the surface and low values of turbulence, giving rise to shallow fog. The evolution of this type of fog is markedly sensitive to the dynamical conditions close to the surface (i.e., wind speed and turbulence). On the other hand, CBL fog presents deeper thickness associated with higher values of turbulence and less stability. Subsequently, we evaluated the fog-forecasting skill of two mesoscale models (WRF and HARMONIE) configured as similar as possible. Both models present more difficulties simulating radiation fog events than CBL ones. However, the duration and vertical extension of the CBL fog events is normally overestimated. This extended-fog avoids the surface radiative cooling needed to simulate radiation fog events formed the following nights. Therefore, these periods with alternating CBL and radiation fog are especially challenging for NWP models. © 2019 Elsevier B.V.
英文关键词	Cloud-base-lowering; Fog; HARMONIE; Model skill; Radiation; WRF
语种	英语
scopus关键词	Boundary layers; Heat radiation; Radiation; Radiative Cooling; Turbulence; Weather forecasting; Wind; Cloud base; HARMONIE; Model skill; Numerical weather prediction models; Observational analysis; Operational forecasts; Surface characteristics; Vertical extension; Fog; aerosol; cloud microphysics; fog; solar radiation; turbulence; weather forecasting
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162207
作者单位	Dept. Física de la Tierra y Astrofísica, Universidad Complutense de Madrid, Spain; Laboratoire d'Aérologie, University of Toulouse, CNRS, France; Meteorology and Air quality Section, Wageningen University, Netherlands; Agencia Estatal de Meteorología (AEMET), Madrid, Spain
推荐引用方式 GB/T 7714	Román-Cascón C.,Yagüe C.,Steeneveld G.-J.,et al. Radiation and cloud-base lowering fog events: Observational analysis and evaluation of WRF and HARMONIE[J],2019,229.
APA	Román-Cascón C..,Yagüe C..,Steeneveld G.-J..,Morales G..,Arrillaga J.A..,...&Maqueda G..(2019).Radiation and cloud-base lowering fog events: Observational analysis and evaluation of WRF and HARMONIE.Atmospheric Research,229.
MLA	Román-Cascón C.,et al."Radiation and cloud-base lowering fog events: Observational analysis and evaluation of WRF and HARMONIE".Atmospheric Research 229(2019).