Regional distribution of large blowdown patches across Amazonia in 2005 caused by a single convective squall line
In mid-January 2005 a convective squall line traversed 4.5 × 106 km2 of Amazonia from southwest to northeast. As seen in Landsat images, this atypical convective storm left blowdown imprints with diffuse geometry, unlike the fan-shaped wind disturbance of much more frequent east-to-west propagating...
| Autor principal: | Araujo, Raquel Fernandes |
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| Outros Autores: | Nelson, Bruce Walker, Celes, Carlos Henrique Souza, Chambers, Jeffrey Quintin |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Geophysical Research Letters
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17069 |
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oai:repositorio:1-17069 |
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oai:repositorio:1-17069 Regional distribution of large blowdown patches across Amazonia in 2005 caused by a single convective squall line Araujo, Raquel Fernandes Nelson, Bruce Walker Celes, Carlos Henrique Souza Chambers, Jeffrey Quintin Damage Detection Forestry Geographical Distribution Convective Storms Mortality Natural Disturbance Squall Lines Windthrows Storms Convective System Damage Environmental Disturbance Forest Ecosystem Geometry Landsat Mortality Patch Dynamics Patch Size Regional Pattern Satellite Imagery Squall Line Storm Tree Windthrow Amazonia In mid-January 2005 a convective squall line traversed 4.5 × 106 km2 of Amazonia from southwest to northeast. As seen in Landsat images, this atypical convective storm left blowdown imprints with diffuse geometry, unlike the fan-shaped wind disturbance of much more frequent east-to-west propagating squall lines. Previous work reported 0.2% of the forest area damaged by this one relatively rare event within one Landsat image and assumed similar disturbance across the entire traverse. We mapped convective wind damage impact to the region in 2005 by identifying large-scale (>4 ha) blowdown imprints in 30 Landsat images. The diffuse-type imprints associated with this single squall line contributed up to 60–72% of total 2005 wind-disturbed area detected across the region, but damage was highly concentrated in central Amazonia. Consequently, the distribution of large wind damage patches in 2005 across Amazonia was very different from long-term average. Regional distribution of wind-driven tree mortality for smaller patch sizes remains unknown. ©2017. American Geophysical Union. All Rights Reserved. 2020-06-15T21:38:35Z 2020-06-15T21:38:35Z 2017 Artigo https://repositorio.inpa.gov.br/handle/1/17069 10.1002/2017GL073564 en Volume 44, Número 15, Pags. 7793-7798 Restrito Geophysical Research Letters |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Damage Detection Forestry Geographical Distribution Convective Storms Mortality Natural Disturbance Squall Lines Windthrows Storms Convective System Damage Environmental Disturbance Forest Ecosystem Geometry Landsat Mortality Patch Dynamics Patch Size Regional Pattern Satellite Imagery Squall Line Storm Tree Windthrow Amazonia |
| spellingShingle |
Damage Detection Forestry Geographical Distribution Convective Storms Mortality Natural Disturbance Squall Lines Windthrows Storms Convective System Damage Environmental Disturbance Forest Ecosystem Geometry Landsat Mortality Patch Dynamics Patch Size Regional Pattern Satellite Imagery Squall Line Storm Tree Windthrow Amazonia Araujo, Raquel Fernandes Regional distribution of large blowdown patches across Amazonia in 2005 caused by a single convective squall line |
| topic_facet |
Damage Detection Forestry Geographical Distribution Convective Storms Mortality Natural Disturbance Squall Lines Windthrows Storms Convective System Damage Environmental Disturbance Forest Ecosystem Geometry Landsat Mortality Patch Dynamics Patch Size Regional Pattern Satellite Imagery Squall Line Storm Tree Windthrow Amazonia |
| description |
In mid-January 2005 a convective squall line traversed 4.5 × 106 km2 of Amazonia from southwest to northeast. As seen in Landsat images, this atypical convective storm left blowdown imprints with diffuse geometry, unlike the fan-shaped wind disturbance of much more frequent east-to-west propagating squall lines. Previous work reported 0.2% of the forest area damaged by this one relatively rare event within one Landsat image and assumed similar disturbance across the entire traverse. We mapped convective wind damage impact to the region in 2005 by identifying large-scale (>4 ha) blowdown imprints in 30 Landsat images. The diffuse-type imprints associated with this single squall line contributed up to 60–72% of total 2005 wind-disturbed area detected across the region, but damage was highly concentrated in central Amazonia. Consequently, the distribution of large wind damage patches in 2005 across Amazonia was very different from long-term average. Regional distribution of wind-driven tree mortality for smaller patch sizes remains unknown. ©2017. American Geophysical Union. All Rights Reserved. |
| format |
Artigo |
| author |
Araujo, Raquel Fernandes |
| author2 |
Nelson, Bruce Walker Celes, Carlos Henrique Souza Chambers, Jeffrey Quintin |
| author2Str |
Nelson, Bruce Walker Celes, Carlos Henrique Souza Chambers, Jeffrey Quintin |
| title |
Regional distribution of large blowdown patches across Amazonia in 2005 caused by a single convective squall line |
| title_short |
Regional distribution of large blowdown patches across Amazonia in 2005 caused by a single convective squall line |
| title_full |
Regional distribution of large blowdown patches across Amazonia in 2005 caused by a single convective squall line |
| title_fullStr |
Regional distribution of large blowdown patches across Amazonia in 2005 caused by a single convective squall line |
| title_full_unstemmed |
Regional distribution of large blowdown patches across Amazonia in 2005 caused by a single convective squall line |
| title_sort |
regional distribution of large blowdown patches across amazonia in 2005 caused by a single convective squall line |
| publisher |
Geophysical Research Letters |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17069 |
| _version_ |
1787145269801910272 |
| score |
11.680425 |