 |
| Titel |
Multi-scale meteorological conceptual analysis of observed active fire hotspot activity and smoke optical depth in the Maritime Continent |
| VerfasserIn |
J. S. Reid, P. Xian, E. J. Hyer, M. K. Flatau, E. M. Ramirez, F. J. Turk, C. R. Sampson, C. Zhang, E. M. Fukada, E. D. Maloney |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 12, no. 4 ; Nr. 12, no. 4 (2012-02-27), S.2117-2147 |
| Datensatznummer |
250010743
|
| Publikation (Nr.) |
 copernicus.org/acp-12-2117-2012.pdf |
|
|
|
|
|
| Zusammenfassung |
| Much research and speculation exists about the meteorological and
climatological impacts of biomass burning in the Maritime Continent (MC) of
Indonesia and Malaysia, particularly during El Nino events. However, the MC
hosts some of the world's most complicated meteorology, and we wish to
understand how tropical phenomena at a range of scales influence observed
burning activity. Using Moderate Resolution Imaging Spectroradiometer (MODIS)
derived active fire hotspot patterns coupled with aerosol data assimilation
products, satellite based precipitation, and meteorological indices, the
meteorological context of observed fire prevalence and smoke optical depth in
the MC are examined. Relationships of burning and smoke transport to such
meteorological and climatic factors as the interannual El Nino-Southern
Oscillation (ENSO), El Nino Modoki, Indian Ocean Dipole (IOD), the seasonal
migration of the Intertropical Convergence Zone, the 30–90 day Madden Julian
Oscillation (MJO), tropical waves, tropical cyclone activity, and diurnal
convection were investigated. A conceptual model of how all of the differing
meteorological scales affect fire activity is presented. Each island and its
internal geography have different sensitivities to these factors which are
likely relatable to precipitation patterns and land use practices. At the
broadest scales as previously reported, we corroborate ENSO is indeed the
largest factor. However, burning is also enhanced by periods of El Nino
Modoki. Conversely, IOD influences are unclear. While interannual phenomena
correlate to total seasonal burning, the MJO largely controls when visible
burning occurs. High frequency phenomena which are poorly constrained in
models such as diurnal convection and tropical cyclone activity also have an
impact which cannot be ignored. Finally, we emphasize that these phenomena
not only influence burning, but also the observability of burning, further
complicating our ability to assign reasonable emissions. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|