DOI: 10.1002/jgrd.50216
论文题名: Impact of model errors in convective transport on CO source estimates inferred from MOPITT CO retrievals
作者: Jiang Z. ; Jones D.B.A. ; Worden H.M. ; Deeter M.N. ; Henze D.K. ; Worden J. ; Bowman K.W. ; Brenninkmeijer C.A.M. ; Schuck T.J.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 4 起始页码: 2073
结束页码: 2083
语种: 英语
英文关键词: carbon monoxide
; inversion analysis
; MOPITT v5
Scopus关键词: Aircraft
; Atmospheric composition
; Carbon monoxide
; Errors
; Estimation
; Surface measurement
; Troposphere
; Upper atmosphere
; Biogenic volatile organic compounds
; Chemical transport models
; Convective transport
; Goddard earth observing systems
; Inversion analysis
; MOPITT v5
; Trace gas measurement
; Vertical transports
; Uncertainty analysis
; atmospheric convection
; atmospheric pollution
; carbon monoxide
; EOS
; error analysis
; MOPITT
; NOAA satellite
; remote sensing
; surface flux
; trace gas
; troposphere
; vertical profile
; India
; Southeast Asia
英文摘要: Estimates of surface fluxes of carbon monoxide (CO) inferred from remote sensing observations or free tropospheric trace gas measurements using global chemical transport models can have significant uncertainties because of discrepancies in the vertical transport in the models, which make it challenging to unequivocally relate the observations back to the surface fluxes in the models. The new Measurement of Pollution in the Troposphere (MOPITT) version 5 retrievals provide greater sensitivity to lower tropospheric CO over land relative to the previous versions and are, therefore, useful for evaluating vertical transport in models. We have assimilated the new MOPITT CO retrievals, using the Goddard Earth Observing System (GEOS)-Chem model, to study the influence of vertical transport errors on inferred CO sources. We compared the source estimates obtained by assimilating the CO profiles, the column amounts, and the surface level retrievals for June-August 2006. The three different inversions produced large differences in the source estimates in regions of convection and strong CO emissions. The inversion using the CO profiles suggested an 85% increase in emissions in India/Southeast Asia, which exacerbated the model bias in the lower and middle troposphere, whereas using the surface level retrievals produced a 37% decrease in Indian/Southeast Asian emissions, which exacerbated the underestimate of CO in the upper troposphere. Globally, the inversion with the surface retrievals suggested a 22% reduction in emissions from the a priori estimate of 161 Tg CO/month (from combustion and the oxidation of biogenic volatile organic compounds), averaged in June-August 2006. The analysis results were validated with independent surface CO measurements from NOAA Global Monitoring Division (GMD) network and upper troposphere CO measurements from the Civil Aircraft for the Regular Investigation of the Atmosphere Based on an Instrumented Container (CARIBIC). We found that the inversion with the surface retrievals agreed best with surface CO data but produced the largest discrepancy with the CARIBIC aircraft data in the upper troposphere, suggesting the influence of vertical transport errors in the model. Our results show that the comparison of the a posteriori CO distributions obtained from the inversions using the surface and profile retrievals provides a means of characterizing the potential impact of the vertical transport biases on the source estimates and the CO distribution. Key Points Use new MOPITT V5 data to obtain greater sensitivity on low troposphere.Model errors on vertical transport have significant effect on the inversion.MOPITT V5 can be used to estimate the influence of vertical transport error. © 2013. American Geophysical Union. All Rights Reserved. 资助项目: NNX09AN77G
; NNX10AT42G
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63907
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 Physics, University of Toronto, Toronto, ON M5S 1A7, Canada; JIFRESSE, University of California, Los Angeles, Los Angeles, CA, United States; NCAR, Boulder, CO, United States; University of Colorado, Boulder, CO, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Max-Planck-Institut fur Chemie, Air Chemistry Division, Mainz, Germany
Recommended Citation:
Jiang Z.,Jones D.B.A.,Worden H.M.,et al. Impact of model errors in convective transport on CO source estimates inferred from MOPITT CO retrievals[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(4)