Top-Down CO Emissions Based On IASI Observations and Hemispheric Constraints on OH Levels

Muller, J. F.; Stavrakou, T.; Bauwens, M.; George, M.; Hurtmans, D.; Coheur, P. F.; Clerbaux, C.; Sweeney, C.

doi:10.1002/2017gl076697

Back to Previous Page

- Add this to...
- Twitter
- Facebook
- Google Bookmarks
- LinkedIn

Top-Down CO Emissions Based On IASI Observations and Hemispheric Constraints on OH Levels

Published Date:

2018

Source:

Geophysical Research Letters, 45(3), 1621-1629.

[PDF-7.16 MB]

This document cannot be previewed automatically as it exceeds 5 MB

Please click the thumbnail image to view the document.

Top-Down CO Emissions Based On IASI Observations and Hemispheric Constraints on OH Levels

Details:

Personal Author:

Muller, J. F. ; Stavrakou, T. ; Bauwens, M. ; George, M. ; Hurtmans, D. ; ... More ▼

Description:

Assessments of carbon monoxide emissions through inverse modeling are dependent on the modeled abundance of the hydroxyl radical (OH) which controls both the primary sink of CO and its photochemical source through hydrocarbon oxidation. However, most chemistry transport models (CTMs) fall short of reproducing constraints on hemispherically averaged OH levels derived from methylchloroform (MCF) observations. Here we construct five different OH fields compatible with MCF-based analyses, and we prescribe those fields in a global CTM to infer CO fluxes based on Infrared Atmospheric Sounding Interferometer (IASI) CO columns. Each OH field leads to a different set of optimized emissions. Comparisons with independent data (surface, ground-based remotely sensed, aircraft) indicate that the inversion adopting the lowest average OH level in the Northern Hemisphere (7.8 x 10(5) molec cm(-3), approximate to 18% lower than the best estimate based on MCF measurements) provides the best overall agreement with all tested observation data sets.

DOI:

http://dx.doi.org/10.1002/2017gl076697

Document Type:

Journal Article

Collection(s):

Office of Oceanic and Atmospheric Research (OAR)
NOAA Cooperative Institutes

Main Document Checksum:

[+]

Supporting Files:

No Additional Files

You May Also Like:

Stratospheric aerosol-Observations, processes, and impact on climate

Personal Author:

Kremser, S.; Thomason, L. W.; von Hobe, M.; Hermann, M.; Deshler, T.; Timmreck, C.; Toohey, M.; Stenke, A.; Schwarz, J. P.; Weigel, R.; Fueglistaler, S.; Prata, F. J.; Vernier, J. P.; Schlager, H.; Barnes, J. E.; Antuna-Marrero, J. C.; Fairlie, D.; Palm, M.; Mahieu, E.; Notholt, J.; Rex, M.; Bingen, C.; Vanhellemont, F.; Bourassa, A.; Plane, J. M. C.; Klocke, D.; Carn, S. A.; Clarisse, L.; Trickl, T.; Neely, R.; James, A. D.; Rieger, L.; Wilson, J. C.; Meland, B.;

Published Date:

2016

Source:

Reviews of Geophysics, 54(2), 278-335.

Description:

Interest in stratospheric aerosol and its role in climate have increased over the last decade due to the observed increase in stratospheric aerosol since 2000 and the potential for changes in the sulfur cycle induced by climate change. This review pr...

File Type:

[PDF - 4.29 MB]
Variability and quasi-decadal changes in the methane budget over the period 2000-2012

Personal Author:

Saunois, M.; Bousquet, P.; Poulter, B.; Peregon, A.; Ciais, P.; Canadell, J. G.; Dlugokencky, E. J.; Etiope, G.; Bastviken, D.; Houweling, S.; Janssens-Maenhout, G.; Tubiello, F. N.; Castaldi, S.; Jackson, R. B.; Alexe, M.; Arora, V. K.; Beerling, D. J.; Bergamaschi, P.; Blake, D. R.; Brailsford, G.; Bruhwiler, L.; Crevoisier, C.; Crill, P.; Covey, K.; Frankenberg, C.; Gedney, N.; Hoglund-Isaksson, L.; Ishizawa, M.; Ito, A.; Joos, F.; Kim, H. S.; Kleinen, T.; Krummel, P.; Lamarque, J. F.; Langenfelds, R.; Locatelli, R.; Machida, T.; Maksyutov, S.; Melton, J. R.; Morino, I.; Naik, V.; O'Doherty, S.; Parmentier, F. J.; Patra, P. K.; Peng, C. H.; Peng, S. S.; Peters, G. P.; Pison, I.; Prinn, R.; Ramonet, M.; Riley, W. J.; Saito, M.; Santini, M.; Schroeder, R.; Simpson, I. J.; Spahni, R.; Takizawa, A.; Thornton, B. F.; Tian, H. Q.; Tohjima, Y.; Viovy, N.; Voulgarakis, A.; Weiss, R.; Wilton, D. J.; Wiltshire, A.; Worthy, D.; Wunch, D.; Xu, X. Y.; Yoshida, Y.; Zhang, B. W.; Zhang, Z.; Zhu, Q. A.;

Published Date:

2017

Source:

Atmospheric Chemistry and Physics, 17(18), 11135-11161.

Description:

Following the recent Global Carbon Project (GCP) synthesis of the decadal methane (CH4) budget over 2000-2012 (Saunois et al., 2016), we analyse here the same dataset with a focus on quasi-decadal and inter-annual variability in CH4 emissions. The GC...

File Type:

[PDF - 3.85 MB]
Rising atmospheric methane: 2007-2014 growth and isotopic shift

Personal Author:

Nisbet, E. G.; Dlugokencky, E. J.; Manning, M. R.; Lowry, D.; Fisher, R. E.; France, J. L.; Michel, S. E.; Miller, J. B.; White, J. W. C.; Vaughn, B.; Bousquet, P.; Pyle, J. A.; Warwick, N. J.; Cain, M.; Brownlow, R.; Zazzeri, G.; Lanoiselle, M.; Manning, A. C.; Gloor, E.; Worthy, D. E. J.; Brunke, E. G.; Labuschagne, C.; Wolff, E. W.; Ganesan, A. L.;

Published Date:

2016

Source:

Global Biogeochemical Cycles, 30(9), 1356-1370.

Series:

CIRES (Cooperative Institute for Research in Environmental Sciences)

Description:

From 2007 to 2013, the globally averaged mole fraction of methane in the atmosphere increased by 5.7 +/- 1.2 ppb yr(-1). Simultaneously, delta C-13(CH4) (a measure of the C-13/C-12 isotope ratio in methane) has shifted to significantly more negative ...

File Type:

[PDF - 1.72 MB]