DOI: 10.1002/2017JD027291
Scopus记录号: 2-s2.0-85041531860
论文题名: Retrieving the Polar Mixed-Phase Cloud Liquid Water Path by Combining CALIOP and IIR Measurements
作者: Luo T. ; Wang Z. ; Li X. ; Deng S. ; Huang Y. ; Wang Y.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 3 起始页码: 1755
结束页码: 1770
语种: 英语
英文关键词: CALIOP
; cloud liquid water path
; IIR
; polar mixed-phase
英文摘要: Mixed-phase cloud (MC) is the dominant cloud type over the polar region, and there are challenging conditions for remote sensing and in situ measurements. In this study, a new methodology of retrieving the stratiform MC liquid water path (LWP) by combining Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) and infrared imaging radiometer (IIR) measurements was developed and evaluated. This new methodology takes the advantage of reliable cloud-phase discrimination by combining lidar and radar measurements. An improved multiple-scattering effect correction method for lidar signals was implemented to provide reliable cloud extinction near cloud top. Then with the adiabatic cloud assumption, the MC LWP can be retrieved by a lookup-table-based method. Simulations with error-free inputs showed that the mean bias and the root mean squared error of the LWP derived from the new method are −0.23 ± 2.63 g/m2, with the mean absolute relative error of ~4%. Simulations with erroneous inputs suggested that the new methodology could provide reliable retrieval of LWP to support the statistical or climatology analysis. Two-month A-train satellite retrievals over Arctic region showed that the new method can produce very similar cloud top temperature (CTT) dependence of LWP to the ground-based microwave radiometer measurements, with a bias of −0.78 g/m2 and a correlation coefficient of 0.95 between the two mean CTT-LWP relationships. The new approach can also produce reasonable pattern and value of LWP in spatial distribution over the Arctic region. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114468
Appears in Collections: 气候减缓与适应
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作者单位: Hefei Institute of physical science, Chinese Academy of Sciences, Hefei, China; Department Atmospheric Science, University of Wyoming, Laramie, WY, United States; Anhui Meteorological Institute, Hefei, China; Shouxian National Climatology Observatory, Shouxian, China
Recommended Citation:
Luo T.,Wang Z.,Li X.,et al. Retrieving the Polar Mixed-Phase Cloud Liquid Water Path by Combining CALIOP and IIR Measurements[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(3)