Relationships between declining summer sea ice, increasing temperatures and changing vegetation in the Siberian Arctic tundra from MODIS time series (2000–11)
The concern about Arctic greening has grown recently as the phenomenon is thought to have significant influence on global climate via atmospheric carbon emissions. Earlier work on Arctic vegetation highlighted the role of summer sea ice decline in the enhanced warming and greening phenomena observed...
Published in: | Environmental Research Letters |
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Online Access: | https://doi.org/10.1088/1748-9326/7/4/044028 https://doaj.org/article/06e1fe2fcb1649a79de7cc7d8d9bb28e |
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ftdoajarticles:oai:doaj.org/article:06e1fe2fcb1649a79de7cc7d8d9bb28e 2023-09-05T13:16:05+02:00 Relationships between declining summer sea ice, increasing temperatures and changing vegetation in the Siberian Arctic tundra from MODIS time series (2000–11) L P Dutrieux H Bartholomeus M Herold J Verbesselt 2012-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/7/4/044028 https://doaj.org/article/06e1fe2fcb1649a79de7cc7d8d9bb28e EN eng IOP Publishing https://doi.org/10.1088/1748-9326/7/4/044028 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/7/4/044028 1748-9326 https://doaj.org/article/06e1fe2fcb1649a79de7cc7d8d9bb28e Environmental Research Letters, Vol 7, Iss 4, p 044028 (2012) 93.30.Sq Arctic vegetation change sea ice concentration TI-NDVI SWI MODIS Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2012 ftdoajarticles https://doi.org/10.1088/1748-9326/7/4/044028 2023-08-13T00:37:44Z The concern about Arctic greening has grown recently as the phenomenon is thought to have significant influence on global climate via atmospheric carbon emissions. Earlier work on Arctic vegetation highlighted the role of summer sea ice decline in the enhanced warming and greening phenomena observed in the region, but did not contain enough details for spatially characterizing the interactions between sea ice, temperature and vegetation photosynthetic absorption. By using 1 km resolution data from the Moderate Resolution Imaging Spectrometer (MODIS) as a primary data source, this study presents detailed maps of vegetation and temperature trends for the Siberian Arctic region, using the time integrated normalized difference vegetation index (TI-NDVI) and summer warmth index (SWI) calculated for the period 2000–11 to represent vegetation greenness and temperature respectively. Spatio-temporal relationships between the two indices and summer sea ice conditions were investigated with transects at eight locations using sea ice concentration data from the Special Sensor Microwave/Imager (SSM/I). In addition, the derived vegetation and temperature trends were compared among major Arctic vegetation types and bioclimate subzones. The fine resolution trend map produced confirms the overall greening (+1% yr ^−1 ) and warming (+0.27% yr ^−1 ) of the region, reported in previous studies, but also reveals browning areas. The causes of such local decreases in vegetation, while surrounding areas are experiencing the opposite reaction to changing conditions, are still unclear. Overall correlations between sea ice concentration and SWI as well as TI-NDVI decreased in strength with increasing distance from the coast, with a particularly pronounced pattern in the case of SWI. SWI appears to be driving TI-NDVI in many cases, but not systematically, highlighting the presence of limiting factors other than temperature for plant growth in the region. Further unravelling those limiting factors constitutes a priority in future research. ... Article in Journal/Newspaper Arctic Greening Arctic Sea ice Tundra Directory of Open Access Journals: DOAJ Articles Arctic Browning ENVELOPE(164.050,164.050,-74.617,-74.617) Environmental Research Letters 7 4 044028 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
93.30.Sq Arctic vegetation change sea ice concentration TI-NDVI SWI MODIS Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
93.30.Sq Arctic vegetation change sea ice concentration TI-NDVI SWI MODIS Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 L P Dutrieux H Bartholomeus M Herold J Verbesselt Relationships between declining summer sea ice, increasing temperatures and changing vegetation in the Siberian Arctic tundra from MODIS time series (2000–11) |
topic_facet |
93.30.Sq Arctic vegetation change sea ice concentration TI-NDVI SWI MODIS Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
The concern about Arctic greening has grown recently as the phenomenon is thought to have significant influence on global climate via atmospheric carbon emissions. Earlier work on Arctic vegetation highlighted the role of summer sea ice decline in the enhanced warming and greening phenomena observed in the region, but did not contain enough details for spatially characterizing the interactions between sea ice, temperature and vegetation photosynthetic absorption. By using 1 km resolution data from the Moderate Resolution Imaging Spectrometer (MODIS) as a primary data source, this study presents detailed maps of vegetation and temperature trends for the Siberian Arctic region, using the time integrated normalized difference vegetation index (TI-NDVI) and summer warmth index (SWI) calculated for the period 2000–11 to represent vegetation greenness and temperature respectively. Spatio-temporal relationships between the two indices and summer sea ice conditions were investigated with transects at eight locations using sea ice concentration data from the Special Sensor Microwave/Imager (SSM/I). In addition, the derived vegetation and temperature trends were compared among major Arctic vegetation types and bioclimate subzones. The fine resolution trend map produced confirms the overall greening (+1% yr ^−1 ) and warming (+0.27% yr ^−1 ) of the region, reported in previous studies, but also reveals browning areas. The causes of such local decreases in vegetation, while surrounding areas are experiencing the opposite reaction to changing conditions, are still unclear. Overall correlations between sea ice concentration and SWI as well as TI-NDVI decreased in strength with increasing distance from the coast, with a particularly pronounced pattern in the case of SWI. SWI appears to be driving TI-NDVI in many cases, but not systematically, highlighting the presence of limiting factors other than temperature for plant growth in the region. Further unravelling those limiting factors constitutes a priority in future research. ... |
format |
Article in Journal/Newspaper |
author |
L P Dutrieux H Bartholomeus M Herold J Verbesselt |
author_facet |
L P Dutrieux H Bartholomeus M Herold J Verbesselt |
author_sort |
L P Dutrieux |
title |
Relationships between declining summer sea ice, increasing temperatures and changing vegetation in the Siberian Arctic tundra from MODIS time series (2000–11) |
title_short |
Relationships between declining summer sea ice, increasing temperatures and changing vegetation in the Siberian Arctic tundra from MODIS time series (2000–11) |
title_full |
Relationships between declining summer sea ice, increasing temperatures and changing vegetation in the Siberian Arctic tundra from MODIS time series (2000–11) |
title_fullStr |
Relationships between declining summer sea ice, increasing temperatures and changing vegetation in the Siberian Arctic tundra from MODIS time series (2000–11) |
title_full_unstemmed |
Relationships between declining summer sea ice, increasing temperatures and changing vegetation in the Siberian Arctic tundra from MODIS time series (2000–11) |
title_sort |
relationships between declining summer sea ice, increasing temperatures and changing vegetation in the siberian arctic tundra from modis time series (2000–11) |
publisher |
IOP Publishing |
publishDate |
2012 |
url |
https://doi.org/10.1088/1748-9326/7/4/044028 https://doaj.org/article/06e1fe2fcb1649a79de7cc7d8d9bb28e |
long_lat |
ENVELOPE(164.050,164.050,-74.617,-74.617) |
geographic |
Arctic Browning |
geographic_facet |
Arctic Browning |
genre |
Arctic Greening Arctic Sea ice Tundra |
genre_facet |
Arctic Greening Arctic Sea ice Tundra |
op_source |
Environmental Research Letters, Vol 7, Iss 4, p 044028 (2012) |
op_relation |
https://doi.org/10.1088/1748-9326/7/4/044028 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/7/4/044028 1748-9326 https://doaj.org/article/06e1fe2fcb1649a79de7cc7d8d9bb28e |
op_doi |
https://doi.org/10.1088/1748-9326/7/4/044028 |
container_title |
Environmental Research Letters |
container_volume |
7 |
container_issue |
4 |
container_start_page |
044028 |
_version_ |
1776197804175130624 |