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| Titel |
A study of the impact of land use change in Borneo on atmospheric composition using a global model |
| VerfasserIn |
Nicola Warwick, Ben Langford, Pawel Misztal, Glenn Carver, John Pyle |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250041944
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| Zusammenfassung |
| A high resolution version of the Cambridge p-TOMCAT model has been used
to analyse results from the recent NERC-funded OP3 measurement campaign
in Borneo. By using the chemical transport model at 50 km resolution, we
have begun to understand the impact of emissions and other physical
processes on regional chemistry. In particular, we have run several
model scenarios looking at the potential impact of land use change of
forest to oil palm in Borneo, and the corresponding change in isoprene
emissions, on local and regional atmospheric composition. Oil palm is
one of the World’s most rapidly expanding equatorial crops, with
Indonesia and Malaysia being the two largest producing countries.
Several model emission scenarios are run for the OP3 measurement
period, including emissions from global datasets and local flux
measurements. Isoprene fluxes observed during OP3 at a forest site were
considerably less than fluxes based on the global GEIA dataset. Using
the OP3 observed fluxes in the model substantially improved the
comparison between modelled and observed isoprene mixing ratios, and had
a significant impact on modeled O3 and OH over Borneo. Further model
scenarios performed show that replacing forest with oil palm has the
potential to significantly alter the atmospheric oxidizing capacity
over Borneo. |
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