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DOI	10.1016/j.atmosres.2019.104801
	Aircraft observed diurnal variations of the planetary boundary layer under heat waves
	Zhang Y.; Wang L.; Santanello J.A.; Jr; Pan Z.; Gao Z.; Li D.
发表日期	2020
ISSN	0169-8095
卷号	235
英文摘要	This study investigates the diurnal variations of the planetary boundary layer (PBL) properties during heat waves (HWs) based on a decade-long data record of hourly profiles from the Aircraft Meteorological Data Reports (AMDAR) at 54 major airports over the Continental United States. The results are also corroborated by surface observations from weather stations. HWs are defined as periods of at least two consecutive days with daily mean temperature higher than the 95th percentile of the warm season (May to September) climatology. Temperature differences between HW and non-HW periods show strong vertical variations throughout the PBL. Under HWs, the daytime convective PBL is deeper while the nocturnal residual layer is excessively hotter. The difference between HWs and non-HWs in the PBL wind and humidity are not uniform, with clear diurnal and vertical variations at some sites. HW-related changes in PBL wind components are strongly associated with changes in atmospheric circulation patterns, especially in the northeastern region. The specific humidity in the PBL shows increases in humid regions but decreases in arid regions under HWs. Moisture transport and surface evaporation are found to play an important role in modulating the changes in PBL humidity. This study highlights that HW-related changes in the PBL structure are not uniform and are affected by both synoptic and local factors. © 2019 Elsevier B.V.
英文关键词	AMDAR; Atmospheric circulation; Heat wave; Planetary boundary layer; WVSS
学科领域	Aircraft; Atmospheric humidity; Atmospheric thermodynamics; Climatology; AMDAR; Atmospheric circulation; Heat waves; Planetary boundary layers; WVSS; Atmospheric boundary layer; airborne survey; atmospheric circulation; boundary layer; climatology; diurnal variation; heat wave; humidity; planetary atmosphere; United States
语种	英语
scopus关键词	Aircraft; Atmospheric humidity; Atmospheric thermodynamics; Climatology; AMDAR; Atmospheric circulation; Heat waves; Planetary boundary layers; WVSS; Atmospheric boundary layer; airborne survey; atmospheric circulation; boundary layer; climatology; diurnal variation; heat wave; humidity; planetary atmosphere; United States
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/120492
作者单位	Climate and Weather Disasters Collaborative Innovation Center, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, China; Department of Earth and Environment, Boston University, Boston, MA, United States; Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Department of Earth and Atmospheric Sciences, Saint Louis University, St. Louis, MO, United States
推荐引用方式 GB/T 7714	Zhang Y.,Wang L.,Santanello J.A.,et al. Aircraft observed diurnal variations of the planetary boundary layer under heat waves[J],2020,235.
APA	Zhang Y..,Wang L..,Santanello J.A..,Jr.,Pan Z..,...&Li D..(2020).Aircraft observed diurnal variations of the planetary boundary layer under heat waves.Atmospheric Research,235.
MLA	Zhang Y.,et al."Aircraft observed diurnal variations of the planetary boundary layer under heat waves".Atmospheric Research 235(2020).