DOI: 10.1002/2017JD027309
Scopus记录号: 2-s2.0-85040789771
论文题名: AOT Retrieval Procedure for Distributed Measurements With Low-Cost Sun Photometers
作者: Toledo F. ; Garrido C. ; Díaz M. ; Rondanelli R. ; Jorquera S. ; Valdivieso P.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 2 起始页码: 1113
结束页码: 1131
语种: 英语
英文关键词: AOT
; distributed measurement
; Sun photometer
Scopus关键词: AERONET
; aerosol
; calibration
; electrode
; energy planning
; glacier
; metropolitan area
; photometer
; solar power
; spatial resolution
; urban area
; Andes
; Chile
; Metropolitana
英文摘要: We propose a new application of inexpensive light-emitting diode (LED)-based Sun photometers, consisting of measuring the aerosol optical thickness (AOT) with high resolution within metropolitan scales. Previously, these instruments have been used at continental scales by the GLOBE program, but this extension is already covered by more expensive and higher-precision instruments of the AERONET global network. For this we built an open source two-channeled LED-based Sun photometer based on previous developments, with improvements in the hardware, software, and modifications on the calibration procedure. Among these we highlight the use of MODTRAN to characterize the effect introduced by using LED sensors in the AOT retrieval, an open design available for the scientific community and a calibration procedure that takes advantage of a CIMEL Sun photometer located within the city, enables the intercomparison of several LED Sun photometers with a common reference. We estimated the root-mean-square error in the AOT retrieved by the prototypes as 0.006 at the 564 nm and 0.009 at the 408 nm. This error is way under the magnitude of the AOT daily cycle variability measured by us in our campaigns, even for distances closer than 15 km. In addition to inner city campaigns, we also show aerosol-tracing applications by measuring AOT variations from the city of Santiago to the Andes glaciers. Measuring AOT at high spatial resolution in urban areas can improve our understanding of urban scale aerosol circulation, providing information for solar energy planning, health policies, and climatological studies, among others. ©2017. 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/114674
Appears in Collections: 气候减缓与适应
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作者单位: Electrical Engineering Department, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile; Space and Planetary Exploration Laboratory, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile; Department of Mechanical Engineering, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile; Department of Geophysics, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile; Center for Climate and Resilience Research, University of Chile, Santiago, Chile
Recommended Citation:
Toledo F.,Garrido C.,Díaz M.,et al. AOT Retrieval Procedure for Distributed Measurements With Low-Cost Sun Photometers[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(2)