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DOI	10.1016/j.atmosres.2020.105050
	Atmospheric boundary layer height and surface parameters: Trends and relationships over the west coast of India
	Sudeepkumar B.L.; Babu C.A.; Varikoden H.
发表日期	2020
ISSN	0169-8095
卷号	245
英文摘要	Trends and features of Atmospheric Boundary Layer (ABL) over southern part of the west coast of India has been studied using MERRA datasets for 1980–2018 during different seasons incorporating the marine and continental influences. A significant decrease in the ABL height (ABLH) has been observed in the westerly regimes of the west coast. The shallow ABL is expected to cause amplified response in the atmosphere and enhance the formation of extreme events over the region. It is also observed that its variation is related with other surface layer parameters such as specific humidity, temperature, surface zonal wind, Richardson number, CAPE (Convective Available Potential Energy) and sensible & latent heat fluxes. A significant increasing (decreasing) trend in specific humidity (surface zonal wind) is observed in pre-monsoon, monsoon and post monsoon seasons and this trend has significant correlation with the ABL height. The CAPE has a significant increasing trend in daytime of pre-monsoon season, which can lead to formation of intense thunderstorms. A significant reduction in the surface dynamic instability due to decrease in surface westerly zonal wind is observed and it has a significant role in the decreasing trend of ABL height. Surface sensible heat flux possesses a significant decreasing (increasing) trend during the pre-monsoon and post monsoon seasons (monsoon season). Surface latent heat flux shows a decreasing trend during the monsoon which may be attributed to the combined effect of decrease in ABL height and trapping of moisture at lower levels together with an increase in surface temperature. © 2020 Elsevier B.V.
关键词	Atmospheric humidity Atmospheric thermodynamics Boundary layer flow Heat flux Latent heat Potential energy Convective available potential energies Richardson number Sensible heat flux Specific humidity Surface dynamics Surface latent heat fluxes Surface parameter Surface temperatures Atmospheric boundary layer atmospheric dynamics boundary layer coastal zone data set height latent heat flux marine atmosphere monsoon sensible heat flux surface layer surface temperature trend analysis zonal wind India
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/132371
推荐引用方式 GB/T 7714	Sudeepkumar B.L.,Babu C.A.,Varikoden H.. Atmospheric boundary layer height and surface parameters: Trends and relationships over the west coast of India[J]. Atmospheric Research,2020,245.
APA	Sudeepkumar B.L.,Babu C.A.,&Varikoden H..(2020).Atmospheric boundary layer height and surface parameters: Trends and relationships over the west coast of India.,245.
MLA	Sudeepkumar B.L.,et al."Atmospheric boundary layer height and surface parameters: Trends and relationships over the west coast of India".245(2020).