DOI: 10.1002/2014GL062749
论文题名: Remote sensing measurements of the CO<inf>2</inf> mixing ratio in the planetary boundary layer using cloud slicing with airborne lidar
作者: Ramanathan A.K. ; Mao J. ; Abshire J.B. ; Allan G.R.
刊名: Geophysical Research Letters
ISSN: 0094-8847
EISSN: 1944-8578
出版年: 2015
卷: 42, 期: 6 起始页码: 2055
结束页码: 2062
语种: 英语
英文关键词: carbon dioxide
; cloud slicing
; CO2
; lidar
; remote sensing
Scopus关键词: Atmospheric thermodynamics
; Boundary layers
; Carbon dioxide
; Clouds
; Gases
; Mixing
; Remote sensing
; Space optics
; Differential absorption
; Planetary boundary layers
; Retrieval algorithms
; Shallow cumulus clouds
; Simultaneous measurement
; Time-resolved detection
; Vertical trace gas profiles
; Volume mixing ratios
; Optical radar
; absorption
; algorithm
; atmospheric chemistry
; boundary layer
; carbon dioxide
; cumulus
; lidar
; mixing ratio
; remote sensing
; trace gas
; Iowa
; United States
英文摘要: We have measured the CO2 volume mixing ratio (VMR) within the planetary boundary layer (PBL) using cloud slicing with an airborne pulsed integrated path differential absorption (IPDA) lidar from flight altitudes of up to 13km. During a flight over Iowa in summer 2011, simultaneous measurement of the optical range and CO2 absorption to clouds and the ground were made using time-resolved detection of pulse echoes from each scattering surface. We determined the CO2 absorption in the PBL by differencing the two lidar-measured absorption line shapes, one to a broken shallow cumulus cloud layer located at the top of the PBL and the other to the ground. Solving for the CO2 VMR in the PBL and that of the free troposphere, we measured a ≈15ppm (4%) drawdown in the PBL. Both CO2 VMRs were within ≈3ppm of in situ CO2 profile measurements. We have also demonstrated cloud slicing using scatter from thin, diffuse cirrus clouds and cumulus clouds, which allowed solving for the CO2 VMR for three vertical layers. The technique and retrieval algorithm are applicable to a space-based lidar instrument as well as to lidar IPDA measurements of other trace gases. Thus, lidar cloud slicing also offers promise toward space-based remote sensing of vertical trace gas profiles in the atmosphere using a variety of clouds. Key Points Cloud slicing with lidar can sense CO2 in the planetary boundary layer Lidar cloud slicing has been demonstrated using cumulus and cirrus clouds Lidar cloud slicing was validated with in situ measurements ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84927749819&doi=10.1002%2f2014GL062749&partnerID=40&md5=f3bc8ba0c7647e1b915c3ca1c4e78fb2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8463
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
Recommended Citation:
Ramanathan A.K.,Mao J.,Abshire J.B.,et al. Remote sensing measurements of the CO<inf>2</inf> mixing ratio in the planetary boundary layer using cloud slicing with airborne lidar[J]. Geophysical Research Letters,2015-01-01,42(6).