DOI: 10.1002/jgrd.50752
论文题名: SPARC Data Initiative: Comparison of water vapor climatologies from international satellite limb sounders
作者: Hegglin M.I. ; Tegtmeier S. ; Anderson J. ; Froidevaux L. ; Fuller R. ; Funke B. ; Jones A. ; Lingenfelser G. ; Lumpe J. ; Pendlebury D. ; Remsberg E. ; Rozanov A. ; Toohey M. ; Urban J. ; Von Clarmann T. ; Walker K.A. ; Wang R. ; Weigel K.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 20 起始页码: 11824
结束页码: 11846
语种: 英语
英文关键词: data validation
; multi-instrument comparison
; satellite limb sounders
; SPARC Data Initiative
; stratospheric water vapor
; water vapor climatologies
Scopus关键词: Acoustic devices
; Climatology
; Satellites
; Spacecraft instruments
; Tape recorders
; Time series
; Tropics
; Water vapor
; Comprehensive assessment
; Data validation
; Interannual variability
; Limb sounder
; multi-instrument comparison
; Relative uncertainty
; Satellite instruments
; SPARC Data Initiative
; Merging
; acoustic equipment
; annual variation
; climate variation
; climatology
; comparative study
; data processing
; data set
; dehydration
; satellite imagery
; stratosphere
; temporal period
; time series analysis
; troposphere
; water vapor
英文摘要: Within the SPARC Data Initiative, the first comprehensive assessment of the quality of 13 water vapor products from 11 limb-viewing satellite instruments (LIMS, SAGE II, UARS-MLS, HALOE, POAM III, SMR, SAGE III, MIPAS, SCIAMACHY, ACE-FTS, and Aura-MLS) obtained within the time period 1978-2010 has been performed. Each instrument's water vapor profile measurements were compiled into monthly zonal mean time series on a common latitude-pressure grid. These time series serve as basis for the "climatological" validation approach used within the project. The evaluations include comparisons of monthly or annual zonal mean cross sections and seasonal cycles in the tropical and extratropical upper troposphere and lower stratosphere averaged over one or more years, comparisons of interannual variability, and a study of the time evolution of physical features in water vapor such as the tropical tape recorder and polar vortex dehydration. Our knowledge of the atmospheric mean state in water vapor is best in the lower and middle stratosphere of the tropics and midlatitudes, with a relative uncertainty of ±2-6% (as quantified by the standard deviation of the instruments' multiannual means). The uncertainty increases toward the polar regions (±10-15%), the mesosphere (±15%), and the upper troposphere/lower stratosphere below 100 hPa (±30-50%), where sampling issues add uncertainty due to large gradients and high natural variability in water vapor. The minimum found in multiannual (1998-2008) mean water vapor in the tropical lower stratosphere is 3.5 ppmv (±14%), with slightly larger uncertainties for monthly mean values. The frequently used HALOE water vapor data set shows consistently lower values than most other data sets throughout the atmosphere, with increasing deviations from the multi-instrument mean below 100 hPa in both the tropics and extratropics. The knowledge gained from these comparisons and regarding the quality of the individual data sets in different regions of the atmosphere will help to improve model-measurement comparisons (e.g., for diagnostics such as the tropical tape recorder or seasonal cycles), data merging activities, and studies of climate variability. Key Points Validation of H2O climatologies from limb-viewing satellite instruments Key information on uncertainty for data merging or climate variability studies Best quality of H2O in middle stratosphere, worst in UTLS ©2013. 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/63205
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Meteorology, University of Reading, Earley Gate, Reading, RG6 6BB, United Kingdom; GEOMAR, Helmholtz Centre for Ocean Research Kiel, Kiel, Germany; Department of Atmospheric and Planetary Sciences, Hampton University, Hampton VA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Instituto de Astrofísica de Andalucía, CSIC, Granada, Spain; Department of Physics, University of Toronto, Toronto, Canada; NASA Langley Research Center, Hampton VA, United States; Computational Physics, Inc., Boulder CO, United States; Institute of Environmental Physics (IUP), University of Bremen, Bremen, Germany; Department of Earth and Space Sciences, Chalmers University of Technology, Gothenburg, Sweden; Institute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germany; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta GA, United States
Recommended Citation:
Hegglin M.I.,Tegtmeier S.,Anderson J.,et al. SPARC Data Initiative: Comparison of water vapor climatologies from international satellite limb sounders[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(20)