气候变化领域集成服务门户(CCPortal): Analysis of local land-atmosphere coupling in rainy season over a typical underlying surface in Tibetan Plateau based on field measurements and ERA5

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DOI	10.1016/j.atmosres.2020.105025
	Analysis of local land-atmosphere coupling in rainy season over a typical underlying surface in Tibetan Plateau based on field measurements and ERA5
	Sun G.; Hu Z.; Ma Y.; Xie Z.; Yang S.; Wang J.
发表日期	2020
ISSN	0169-8095
卷号	243
英文摘要	This study investigates the local land-atmosphere coupling (LoCo) in the rainy season by applying a mixing diagram method to the field measurements and ERA5 data over a typical underlying surface in Tibetan Plateau (TP). Comparison of frequencies of meteorological variables in June, July, August, and September (JJAS) in 2011 in the two datasets suggests that the ranges of meteorological variables are similar although the ERA5 shows a cold and wet bias. The mixing diagram analysis on 12 July, and 7–8 August 2011 calculated based on the two datasets reveals that the ERA5 could provide similar curves of the mixing diagram in the sunny days, although it tends to overestimate surface sensible and latent heat fluxes (Hsfc, LEsfc), and entrainment sensible heat fluxes (Hent), underestimate entrainment latent heat fluxes (LEent) in sunny days. The mixing diagram analysis under four different weather conditions based on ERA5 shows that LoCo behaves differently under different weather conditions and that as cloud amount increases, less heat and more water vapor are transported into the PBL from the land surface. Study of the monthly mean mixing diagram in JJAS from 2011 to 2014 based on the two datasets indicates the curves of the monthly-mean Cpθ and Lvq and PBL energy budgets exhibit a monthly variation, which relates to Southern Asian monsoon (ASM). Discussion of the relationship between mean Hsfc and max PBLH in the daytime reveals that the role of Hsfc in PBL growth at the daily scale is weakest in July due to the impact of ASM. © 2020 Elsevier B.V.
关键词	Budget control Heat flux Latent heat Meteorology Diagram analysis Field measurement Land-atmosphere couplings Meteorological variables Sensible and latent heat fluxes Sensible heat flux Tibetan Plateau Underlying surface Mixing air-sea interaction atmosphere-ocean coupling boundary layer diagram entrainment latent heat flux monsoon sensible heat flux water vapor China Qinghai-Xizang Plateau
语种	英语
来源机构	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132425
推荐引用方式 GB/T 7714	Sun G.,Hu Z.,Ma Y.,et al. Analysis of local land-atmosphere coupling in rainy season over a typical underlying surface in Tibetan Plateau based on field measurements and ERA5[J]. Atmospheric Research,2020,243.
APA	Sun G.,Hu Z.,Ma Y.,Xie Z.,Yang S.,&Wang J..(2020).Analysis of local land-atmosphere coupling in rainy season over a typical underlying surface in Tibetan Plateau based on field measurements and ERA5.,243.
MLA	Sun G.,et al."Analysis of local land-atmosphere coupling in rainy season over a typical underlying surface in Tibetan Plateau based on field measurements and ERA5".243(2020).