References

ACPD

Atmospheric Chemistry and Physics Discussions

ACPD

1680-7375

Copernicus GmbH

Göttingen, Germany

10.5194/acpd-7-9183-2007

The influence of biogenic emissions on upper-tropospheric methanol as revealed from space

Dufour

¹ ⁶ Szopa

² Hauglustaine

D. A.

² Boone

C. D.

³ Rinsland

C. P.

⁴ Bernath

P. F.

³ ⁵

Laboratoire de Météorologie Dynamique/Institut Pierre Simon Laplace (LMD/IPSL), Palaiseau, France

Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), CNRS-CEA-UVSQ Gif-sur-Yvette, France

Department of Chemistry, University of Waterloo, Ontario, N2L 3G1, Canada

NASA Langley Research Center, Hampton, VA, USA

Deparment of Chemistry, University of York, Heslington, York, YO10 5DD, UK

now at: Laboratoire Inter-universitaire des Systèmes Atmosphériques (LISA), Universités Paris 12 et Paris 7, CNRS, Créteil, France

28 06 2007

7 3 9183 9202

This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

This article is available from http://www.atmos-chem-phys-discuss.net/7/9183/2007/acpd-7-9183-2007.html

The full text article is available as a PDF file from http://www.atmos-chem-phys-discuss.net/7/9183/2007/acpd-7-9183-2007.pdf

The distribution and budget of oxygenated organic compounds in the atmosphere and their impact on tropospheric chemistry are still poorly constrained. Near-global space-borne measurements of seasonally resolved upper tropospheric profiles of methanol by the ACE Fourier transform spectrometer provide a unique opportunity to evaluate our understanding of this important oxygenated organic species. The comparison with distributions simulated by a state-of-the-art chemistry transport model shows fair agreement during the March 2004 to August 2005 period with about 50% of the measurements reproduced by the model within 50%. However, in the northern hemisphere and during summertime, the satellite measurements reveal that the emissions from the continental biosphere lead to upper-tropospheric methanol concentrations significantly higher than expected.

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