DOI: 10.1002/2015GL063204
论文题名: A new method for global retrievals of HCHO total columns from the Suomi National Polar-orbiting Partnership Ozone Mapping and Profiler Suite
作者: Li C. ; Joiner J. ; Krotkov N.A. ; Dunlap L.
刊名: Geophysical Research Letters
ISSN: 0094-8818
EISSN: 1944-8549
出版年: 2015
卷: 42, 期: 7 起始页码: 2515
结束页码: 2522
语种: 英语
英文关键词: HCHO
; OMPS
; retrieval algorithm
Scopus关键词: Algorithms
; Interference suppression
; Loading
; Mapping
; Orbits
; Ozone
; Ultraviolet spectrometers
; Global retrievals
; HCHO
; OMPS
; Ozone mapping and profiler suites
; Ozone monitoring instruments
; Principal Components
; Retrieval algorithms
; Rotational Raman scattering
; Principal component analysis
; algorithm
; climate modeling
; estimation method
; formaldehyde
; ozone
; principal component analysis
; satellite imagery
; spatial distribution
; Finland
英文摘要: We introduce a new method for retrieving formaldehyde (HCHO) based on principal component analysis (PCA) of satellite-measured radiances. Applying the technique to the Suomi National Polar-orbiting Partnership/Ozone Mapping and Profiler Suite (S-NPP/OMPS) radiances between 328.5 and 356.5 nm, we extract principal components (PCs) associated with various physical processes (e.g., ozone absorption and rotational Raman scattering) and measurement details (e.g., wavelength shift). These PCs, along with precomputed HCHO Jacobians, are utilized in spectral fitting to estimate HCHO loading and reduce interferences. Comparisons with model simulations and independent Ozone Monitoring Instrument (OMI) retrievals indicate that our algorithm can detect enhanced HCHO signals over source regions such as the southeast U.S., producing HCHO total columns with similar spatial distributions and seasonal patterns. While our OMPS retrievals are ∼15-20% lower than OMI retrievals from a different algorithm, the differences may be attributed to several instrumental and algorithmic factors. This study demonstrates the potential of PCA algorithms and of OMPS for continuing the long-term satellite HCHO data record. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928699962&doi=10.1002%2f2015GL063204&partnerID=40&md5=52eeb27946d3b845c71afad03839441c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8434
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:
Li C.,Joiner J.,Krotkov N.A.,et al. A new method for global retrievals of HCHO total columns from the Suomi National Polar-orbiting Partnership Ozone Mapping and Profiler Suite[J]. Geophysical Research Letters,2015-01-01,42(7).