Spatial patterns and fire response of recent Amazonian droughts
There has been an increasing awareness of the possibility of climate change causing increased drought frequency in Amazonia, with ensuing impacts on ecosystems and human populations. This debate has been brought into focus by the 1997/1998 and 2005 Amazonian droughts. We analysed the spatial extent...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
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American Geophysical Union
2007
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| Subjects: |
| _version_ | 1797058488130600960 |
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| author | Aragão, L Malhi, Y Roman-Cuesta, R Saatchi, S Anderson, L Shimabukuro, Y |
| author_facet | Aragão, L Malhi, Y Roman-Cuesta, R Saatchi, S Anderson, L Shimabukuro, Y |
| author_sort | Aragão, L |
| collection | OXFORD |
| description | There has been an increasing awareness of the possibility of climate change causing increased drought frequency in Amazonia, with ensuing impacts on ecosystems and human populations. This debate has been brought into focus by the 1997/1998 and 2005 Amazonian droughts. We analysed the spatial extent of these droughts and fire response to the 2005 drought with TRMM and NOAA-12 data, respectively. Both droughts had distinct fingerprints. The 2005 drought was characterized by its intensification throughout the dry season in south-western Amazonia. During 2005 the annual cumulative number of hot pixels in Amazonia increased 33% in relation to the 1999-2005 mean. In the Brazilian state of Acrem at the epicentre of the 2005 drought, the area of leakage forest fires was more than five times greater than the area directly deforested. Fire leakage into flammable forests may be the major agent of biomne transformation in the event of increasing drought frequency. |
| first_indexed | 2024-03-06T19:50:58Z |
| format | Journal article |
| id | oxford-uuid:23f646c5-bab2-4730-b09b-efb4a7073d41 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:50:58Z |
| publishDate | 2007 |
| publisher | American Geophysical Union |
| record_format | dspace |
| spelling | oxford-uuid:23f646c5-bab2-4730-b09b-efb4a7073d412022-03-26T11:47:12ZSpatial patterns and fire response of recent Amazonian droughtsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:23f646c5-bab2-4730-b09b-efb4a7073d41EnvironmentEnglishOxford University Research Archive - ValetAmerican Geophysical Union2007Aragão, LMalhi, YRoman-Cuesta, RSaatchi, SAnderson, LShimabukuro, YThere has been an increasing awareness of the possibility of climate change causing increased drought frequency in Amazonia, with ensuing impacts on ecosystems and human populations. This debate has been brought into focus by the 1997/1998 and 2005 Amazonian droughts. We analysed the spatial extent of these droughts and fire response to the 2005 drought with TRMM and NOAA-12 data, respectively. Both droughts had distinct fingerprints. The 2005 drought was characterized by its intensification throughout the dry season in south-western Amazonia. During 2005 the annual cumulative number of hot pixels in Amazonia increased 33% in relation to the 1999-2005 mean. In the Brazilian state of Acrem at the epicentre of the 2005 drought, the area of leakage forest fires was more than five times greater than the area directly deforested. Fire leakage into flammable forests may be the major agent of biomne transformation in the event of increasing drought frequency. |
| spellingShingle | Environment Aragão, L Malhi, Y Roman-Cuesta, R Saatchi, S Anderson, L Shimabukuro, Y Spatial patterns and fire response of recent Amazonian droughts |
| title | Spatial patterns and fire response of recent Amazonian droughts |
| title_full | Spatial patterns and fire response of recent Amazonian droughts |
| title_fullStr | Spatial patterns and fire response of recent Amazonian droughts |
| title_full_unstemmed | Spatial patterns and fire response of recent Amazonian droughts |
| title_short | Spatial patterns and fire response of recent Amazonian droughts |
| title_sort | spatial patterns and fire response of recent amazonian droughts |
| topic | Environment |
| work_keys_str_mv | AT aragaol spatialpatternsandfireresponseofrecentamazoniandroughts AT malhiy spatialpatternsandfireresponseofrecentamazoniandroughts AT romancuestar spatialpatternsandfireresponseofrecentamazoniandroughts AT saatchis spatialpatternsandfireresponseofrecentamazoniandroughts AT andersonl spatialpatternsandfireresponseofrecentamazoniandroughts AT shimabukuroy spatialpatternsandfireresponseofrecentamazoniandroughts |