Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Home
Search
Quick Search
Advanced
Fulltext
Browse
Collections
Persons
My eDoc
Session History
Login
Name:
Password:
Documentation
Help
Support Wiki
Direct access to
document ID:


          Institute: MPI für Kernphysik     Collection: Physics of Atmospheric Molecular Processes     Display Documents



ID: 62323.0, MPI für Kernphysik / Physics of Atmospheric Molecular Processes
On the relationship between acetone and carbon monoxide in different air masses
Authors:de Reus, M.; Fischer, H.; Arnold, Frank; de Gouw, J.; Holzinger, R.; Warneke, C.; Williams, J.
Language:English
Date of Publication (YYYY-MM-DD):2003-10-14
Title of Journal:Atmospheric Chemistry and Physics
Journal Abbrev.:Atmos. Chem. Phys.
Volume:3
Start Page:1709
End Page:1723
Copyright:© European Geosciences Union 2003
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Carbon monoxide and acetone measurements are presented for five aircraft measurement campaigns at mid-latitudes, polar and tropical regions in the northern hemisphere. Throughout all campaigns, free tropospheric air masses, which were influenced by anthropogenic emissions, showed a similar linear relation between acetone and CO, with a slope of 21-25 pptv acetone/ppbv CO. Measurements in the anthropogenically influenced marine boundary layer revealed a slope of 13-16 pptv acetone/ppbv CO. The different slopes observed in the marine boundary layer and the free troposphere indicate that acetone is emitted by the ocean in relatively clean air masses and taken up by the ocean in polluted air masses. In the lowermost stratosphere, a good correlation between acetone and CO was observed as well, however, with a much smaller slope (~5 pptv acetone/ppbv CO) compared to the troposphere. This is caused by the longer photochemical lifetime of CO compared to acetone in the lower stratosphere, due to the increasing photolytic loss of acetone and the decreasing OH concentration with altitude. No significant correlation between acetone and CO was observed over the tropical rain forest due to the large direct and indirect biogenic emissions of acetone.

The common slopes of the linear acetone-CO relation in various layers of the atmosphere, during five field experiments, makes them useful for model calculations. Often a single observation of the acetone-CO correlation, determined from stratospheric measurements, has been used in box model applications. This study shows that different slopes have to be considered for marine boundary layer, free tropospheric and stratospheric air masses, and that the acetone-CO relation cannot be used for air masses which are strongly influenced by biogenic emissions.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group K. Mauersberger/Atmospheric Trace Gas Environmental Physics (F. Arnold)
MPI für Chemie/Chemie der Atmosphäre
External Affiliations:National Oceanic and Atmospheric Administration (NOAA), Aeronomy Laboratory, Boulder, USA
Identifiers:URL:www.atmos-chem-phys.org/acp/3/1709/
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.