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| Titel |
Assessing variability and long-term trends in burned area by merging multiple satellite fire products |
| VerfasserIn |
L. Giglio, J. T. Randerson, G. R. Werf, P. S. Kasibhatla, G. J. Collatz, D. C. Morton, R. S. DeFries |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 7, no. 3 ; Nr. 7, no. 3 (2010-03-31), S.1171-1186 |
| Datensatznummer |
250004602
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| Publikation (Nr.) |
 copernicus.org/bg-7-1171-2010.pdf |
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| Zusammenfassung |
| Long term, high quality estimates of burned area are needed
for improving both prognostic and diagnostic fire emissions
models and for assessing feedbacks between fire and the
climate system. We developed global, monthly burned area
estimates aggregated to 0.5° spatial resolution for
the time period July 1996 through mid-2009 using four
satellite data sets. From 2001–2009, our primary data source
was 500-m burned area maps produced using Moderate Resolution
Imaging Spectroradiometer (MODIS) surface reflectance imagery;
more than 90% of the global area burned during this time
period was mapped in this fashion. During times when the
500-m MODIS data were not available, we used a combination of
local regression and regional regression trees
developed over periods when burned area and Terra MODIS active fire
data were available to indirectly estimate burned area.
Cross-calibration with fire observations from the
Tropical Rainfall Measuring Mission (TRMM) Visible and
Infrared Scanner (VIRS) and the Along-Track Scanning
Radiometer (ATSR) allowed the data set to be extended prior to
the MODIS era. With our data set we estimated that the global
annual area burned for the years 1997–2008 varied between 330
and 431 Mha, with the maximum occurring in 1998. We compared
our data set to the recent GFED2, L3JRC, GLOBCARBON, and MODIS
MCD45A1 global burned area products and found substantial
differences in many regions. Lastly, we assessed the
interannual variability and long-term trends in global burned
area over the past 13 years. This burned area time series
serves as the basis for the third version of the Global Fire
Emissions Database (GFED3) estimates of trace gas and aerosol
emissions. |
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