Disappearing “alpine tundra” Koppen climatic type in the western United
[1] We examine changes in the areal extent of the Köppen ‘‘alpine tundra’ ’ climate classification type for the mountainous western United States following the work of Kottek et al. (2006). We find a significant decline in the area occupied by this climate category. In the early decades of the 20th...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.560.828 2023-05-15T18:39:36+02:00 Disappearing “alpine tundra” Koppen climatic type in the western United Henry F. Diaz Jon K. Eischeid The Pennsylvania State University CiteSeerX Archives 2007 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.560.828 http://www.colorado.edu/geography/class_homepages/geog_4430_s09/Diaz_WarmingAlpineTundra_GRL2007.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.560.828 http://www.colorado.edu/geography/class_homepages/geog_4430_s09/Diaz_WarmingAlpineTundra_GRL2007.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.colorado.edu/geography/class_homepages/geog_4430_s09/Diaz_WarmingAlpineTundra_GRL2007.pdf text 2007 ftciteseerx 2016-01-08T12:02:16Z [1] We examine changes in the areal extent of the Köppen ‘‘alpine tundra’ ’ climate classification type for the mountainous western United States following the work of Kottek et al. (2006). We find a significant decline in the area occupied by this climate category. In the early decades of the 20th century, the mean temperature of the warmest month in the areas of the western U.S. with nominal alpine tundra climates ranged largely between 8.5C and 9.5C. In the last 20 years (1987–2006), rising temperatures have caused a significant fraction of these areas to exceed the 10C threshold for alpine tundra classification. The result has been a 73 % reduction in coverage of this climatic type. The remaining classified alpine tundra in the last 20 years now averages between 9C–10C during the warmest month, so that continued warming past the classification threshold, would imply that areas where this climate type is found today in the West will no longer be present. Text Tundra Unknown Koppen ENVELOPE(13.327,13.327,66.509,66.509) |
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ftciteseerx |
language |
English |
description |
[1] We examine changes in the areal extent of the Köppen ‘‘alpine tundra’ ’ climate classification type for the mountainous western United States following the work of Kottek et al. (2006). We find a significant decline in the area occupied by this climate category. In the early decades of the 20th century, the mean temperature of the warmest month in the areas of the western U.S. with nominal alpine tundra climates ranged largely between 8.5C and 9.5C. In the last 20 years (1987–2006), rising temperatures have caused a significant fraction of these areas to exceed the 10C threshold for alpine tundra classification. The result has been a 73 % reduction in coverage of this climatic type. The remaining classified alpine tundra in the last 20 years now averages between 9C–10C during the warmest month, so that continued warming past the classification threshold, would imply that areas where this climate type is found today in the West will no longer be present. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Henry F. Diaz Jon K. Eischeid |
spellingShingle |
Henry F. Diaz Jon K. Eischeid Disappearing “alpine tundra” Koppen climatic type in the western United |
author_facet |
Henry F. Diaz Jon K. Eischeid |
author_sort |
Henry F. Diaz |
title |
Disappearing “alpine tundra” Koppen climatic type in the western United |
title_short |
Disappearing “alpine tundra” Koppen climatic type in the western United |
title_full |
Disappearing “alpine tundra” Koppen climatic type in the western United |
title_fullStr |
Disappearing “alpine tundra” Koppen climatic type in the western United |
title_full_unstemmed |
Disappearing “alpine tundra” Koppen climatic type in the western United |
title_sort |
disappearing “alpine tundra” koppen climatic type in the western united |
publishDate |
2007 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.560.828 http://www.colorado.edu/geography/class_homepages/geog_4430_s09/Diaz_WarmingAlpineTundra_GRL2007.pdf |
long_lat |
ENVELOPE(13.327,13.327,66.509,66.509) |
geographic |
Koppen |
geographic_facet |
Koppen |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
http://www.colorado.edu/geography/class_homepages/geog_4430_s09/Diaz_WarmingAlpineTundra_GRL2007.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.560.828 http://www.colorado.edu/geography/class_homepages/geog_4430_s09/Diaz_WarmingAlpineTundra_GRL2007.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766228528770056192 |