Divergent Arctic-Boreal Vegetation Changes between North America and Eurasia over the Past 30 Years
Abstract: Arctic-Boreal region—mainly consisting of tundra, shrub lands, and boreal forests—has been experiencing an amplified warming over the past 30 years. As the main driving force of vegetation growth in the north, temperature exhibits tight coupling with the Normalized Difference Vegetation In...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.310.4288 2023-05-15T14:43:51+02:00 Divergent Arctic-Boreal Vegetation Changes between North America and Eurasia over the Past 30 Years Jian Bi Liang Xu Arindam Samanta Zaichun Zhu Ranga Myneni The Pennsylvania State University CiteSeerX Archives 2013 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.310.4288 http://cybele.bu.edu/download/manuscripts/jian-bi-rs-2013.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.310.4288 http://cybele.bu.edu/download/manuscripts/jian-bi-rs-2013.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://cybele.bu.edu/download/manuscripts/jian-bi-rs-2013.pdf GIMMS NDVI vegetation change North America Eurasia text 2013 ftciteseerx 2016-01-07T22:30:29Z Abstract: Arctic-Boreal region—mainly consisting of tundra, shrub lands, and boreal forests—has been experiencing an amplified warming over the past 30 years. As the main driving force of vegetation growth in the north, temperature exhibits tight coupling with the Normalized Difference Vegetation Index (NDVI)—a proxy to photosynthetic activity. However, the comparison between North America (NA) and northern Eurasia (EA) shows a weakened spatial dependency of vegetation growth on temperature changes in NA during the past decade. If this relationship holds over time, it suggests a 2/3 decrease in vegetation growth under the same rate of warming in NA, while the vegetation response in EA stays the same. This divergence accompanies a circumpolar widespread greening trend, but 20 times more browning in the Boreal NA compared to EA, and comparative greening and browning trends in the Arctic. These observed spatial patterns of NDVI are consistent with the temperature record, except in the Arctic NA, where vegetation exhibits a similar long-term trend of greening to EA under less warming. This unusual growth pattern in Arctic NA could be due to a lack of precipitation velocity compared to the temperature velocity, when taking velocity as a measure of northward migration of climatic conditions. Remote Sens. 2013, 5 2094 Text Arctic Tundra Unknown Arctic Browning ENVELOPE(164.050,164.050,-74.617,-74.617) |
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ftciteseerx |
language |
English |
topic |
GIMMS NDVI vegetation change North America Eurasia |
spellingShingle |
GIMMS NDVI vegetation change North America Eurasia Jian Bi Liang Xu Arindam Samanta Zaichun Zhu Ranga Myneni Divergent Arctic-Boreal Vegetation Changes between North America and Eurasia over the Past 30 Years |
topic_facet |
GIMMS NDVI vegetation change North America Eurasia |
description |
Abstract: Arctic-Boreal region—mainly consisting of tundra, shrub lands, and boreal forests—has been experiencing an amplified warming over the past 30 years. As the main driving force of vegetation growth in the north, temperature exhibits tight coupling with the Normalized Difference Vegetation Index (NDVI)—a proxy to photosynthetic activity. However, the comparison between North America (NA) and northern Eurasia (EA) shows a weakened spatial dependency of vegetation growth on temperature changes in NA during the past decade. If this relationship holds over time, it suggests a 2/3 decrease in vegetation growth under the same rate of warming in NA, while the vegetation response in EA stays the same. This divergence accompanies a circumpolar widespread greening trend, but 20 times more browning in the Boreal NA compared to EA, and comparative greening and browning trends in the Arctic. These observed spatial patterns of NDVI are consistent with the temperature record, except in the Arctic NA, where vegetation exhibits a similar long-term trend of greening to EA under less warming. This unusual growth pattern in Arctic NA could be due to a lack of precipitation velocity compared to the temperature velocity, when taking velocity as a measure of northward migration of climatic conditions. Remote Sens. 2013, 5 2094 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Jian Bi Liang Xu Arindam Samanta Zaichun Zhu Ranga Myneni |
author_facet |
Jian Bi Liang Xu Arindam Samanta Zaichun Zhu Ranga Myneni |
author_sort |
Jian Bi |
title |
Divergent Arctic-Boreal Vegetation Changes between North America and Eurasia over the Past 30 Years |
title_short |
Divergent Arctic-Boreal Vegetation Changes between North America and Eurasia over the Past 30 Years |
title_full |
Divergent Arctic-Boreal Vegetation Changes between North America and Eurasia over the Past 30 Years |
title_fullStr |
Divergent Arctic-Boreal Vegetation Changes between North America and Eurasia over the Past 30 Years |
title_full_unstemmed |
Divergent Arctic-Boreal Vegetation Changes between North America and Eurasia over the Past 30 Years |
title_sort |
divergent arctic-boreal vegetation changes between north america and eurasia over the past 30 years |
publishDate |
2013 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.310.4288 http://cybele.bu.edu/download/manuscripts/jian-bi-rs-2013.pdf |
long_lat |
ENVELOPE(164.050,164.050,-74.617,-74.617) |
geographic |
Arctic Browning |
geographic_facet |
Arctic Browning |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_source |
http://cybele.bu.edu/download/manuscripts/jian-bi-rs-2013.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.310.4288 http://cybele.bu.edu/download/manuscripts/jian-bi-rs-2013.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766315443605209088 |