DOI: 10.1029/2017JD028032
Scopus记录号: 2-s2.0-85047616797
论文题名: Photopolarimetric Sensitivity to Black Carbon Content of Wildfire Smoke: Results From the 2016 ImPACT-PM Field Campaign
作者: Kalashnikova O.V. ; Garay M.J. ; Bates K.H. ; Kenseth C.M. ; Kong W. ; Cappa C.D. ; Lyapustin A.I. ; Jonsson H.H. ; Seidel F.C. ; Xu F. ; Diner D.J. ; Seinfeld J.H.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 10 起始页码: 5376
结束页码: 5396
语种: 英语
英文关键词: AirMSPI
; black carbon
; smoke
英文摘要: Detailed characterization of the aerosol content of wildfire smoke plumes is typically performed through in situ aircraft observations, which have limited temporal and spatial coverage. Extending such observations to regional or global scales requires new remote sensing approaches, such as retrievals that make use of spectropolarimetric, multiangle imaging. In this work measurements made during the Imaging Polarimetric Assessment and Characterization of Tropospheric Particulate Matter (ImPACT-PM) field campaign in a smoke plume near the town of Lebec in Southern California by the Navy Center for Interdisciplinary Remotely Piloted Aircraft Studies Twin Otter aircraft on 8 July 2016 are used in conjunction with near-coincident measurements from the Airborne Multiangle SpectroPolarimetric Imager (AirMSPI) on the National Aeronautics and Space Administration ER-2 high-altitude research aircraft to assess the sensitivity of spectropolarimetric measurements to the black carbon content of the plume. Tracking visible features in the smoke through the sequence of AirMSPI observations allowed the height of the plume to be estimated through geometric techniques. Then, by constraining the fractional amounts of the aerosol constituents with the in situ data, radiative closure was obtained through simulations performed with a polarimetric radiative transfer code, demonstrating the ability to constrain the black carbon mass fraction to approximately 5%, given the uncertainties in the AirMSPI measurements and the assumption of external mixing of aerosol components. The AirMSPI retrieval, made using a limited set of observations from the 470 nm polarimetric spectral band alone, was also generally consistent with operational retrievals of aerosol optical depth and surface reflectance made by the Multi-Angle Implementation of Atmospheric Correction algorithm at 1 km resolution. ©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/113857
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Department of Chemical Engineering, California Institute of Technology, Pasadena, CA, United States; Now at Harvard University Center for the Environment, Cambridge, MA, United States; Department of Civil and Environmental Engineering, University of California, Davis, CA, United States; NASA Goddard Flight Space Center, Greenbelt, MD, United States; CIRPAS, Naval Postgraduate School, Monterey, CA, United States
Recommended Citation:
Kalashnikova O.V.,Garay M.J.,Bates K.H.,et al. Photopolarimetric Sensitivity to Black Carbon Content of Wildfire Smoke: Results From the 2016 ImPACT-PM Field Campaign[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(10)