气候变化领域集成服务门户(CCPortal): An Assessment of PBL Heights and Low Cloud Profiles in CAM5 and CAM5-CLUBB Over the Southeast Pacific Using Satellite Observations

CCPortal

DOI	10.1029/2019GL084498
	An Assessment of PBL Heights and Low Cloud Profiles in CAM5 and CAM5-CLUBB Over the Southeast Pacific Using Satellite Observations
	Kubar T.L.; Xie F.; Ao C.O.; Adhikari L.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:2
英文摘要	Instantaneous satellite cloud top height (CTH) data from Moderate Resolution Imaging Spectroradiometer and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation, as well as planetary boundary layer (PBL) heights corresponding to the minimum refractivity gradient (PBLHN) from GPS radio occultation over the Southeast Pacific, are jointly used for the first time to assess the ability of three versions of National Center for Atmospheric Research Community Atmosphere Model 5 (CAM5) to simulate low-level cloud extent and boundary layer heights. Observed CTH and PBLHN match most closely in the stratocumulus and stratocumulus-to-cumulus transition region, but CTH becomes lower than PBLHN since not all trade cumulus clouds reach the inversion. Simulated CTH and PBLHN are too shallow, but clouds with a new subgrid low cloud parameterization, Cloud Layers Unified by Binormals (CAM5-CLUBB), have a reduced bias, with the CTH-PBLHN distribution from Hi-Res CAM5-CLUBB, the most similar to observations. For PBLHN > 2.7 km, the base CAM5 model shows a bimodal cloud structure and surface-to-500 hPa ascent not seen in observations and European Centre for Medium-Range Weather Forecasts Re analysis Interim data. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric thermodynamics; Climate models; Clouds; Global positioning system; Radiometers; Remote sensing; Satellites; Weather forecasting; Boundary layer heights; Cloud-aerosol lidar and infrared pathfinder satellite observations; European centre for medium-range weather forecasts; GPS radio occultations; Moderate resolution imaging spectroradiometer; National center for atmospheric researches; Planetary boundary layers; stratocumulus-to-cumulus transition; Atmospheric boundary layer; accuracy assessment; assessment method; boundary layer; cumulus; GPS; MODIS; observational method; stratocumulus; Pacific Ocean; Pacific Ocean (Southeast)
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170820
作者单位	Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, CA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Texas A&M University-Corpus Christi, Corpus Christi, TX, United States
推荐引用方式 GB/T 7714	Kubar T.L.,Xie F.,Ao C.O.,et al. An Assessment of PBL Heights and Low Cloud Profiles in CAM5 and CAM5-CLUBB Over the Southeast Pacific Using Satellite Observations[J],2020,47(2).
APA	Kubar T.L.,Xie F.,Ao C.O.,&Adhikari L..(2020).An Assessment of PBL Heights and Low Cloud Profiles in CAM5 and CAM5-CLUBB Over the Southeast Pacific Using Satellite Observations.Geophysical Research Letters,47(2).
MLA	Kubar T.L.,et al."An Assessment of PBL Heights and Low Cloud Profiles in CAM5 and CAM5-CLUBB Over the Southeast Pacific Using Satellite Observations".Geophysical Research Letters 47.2(2020).