Changes in greening in the High Arctic - insights from a 30-year AVHRR max NDVI dataset for Svalbard
Satellite-aided studies of vegetation cover, biomass and productivity are becoming increasingly important formonitoring the effects of a changing climate on the biosphere. With their large spatial coverage and good temporal resolution, space-borne instruments are ideal to observe remote areas over e...
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ftninstnf:oai:brage.nina.no:11250/2419193 2023-05-15T15:10:58+02:00 Changes in greening in the High Arctic - insights from a 30-year AVHRR max NDVI dataset for Svalbard Vickers, Hannah Høgda, Kjell Arild Solbø, Stian Karlsen, Stein Rune Tømmervik, Hans Aanes, Ronny Hansen, Brage Bremset Svalbard 2016 application/pdf http://hdl.handle.net/11250/2419193 eng eng Environmental Research Letters 11 2016 urn:issn:1748-9326 http://hdl.handle.net/11250/2419193 cristin:1386686 Navngivelse 3.0 Norge http://creativecommons.org/licenses/by/3.0/no/ CC-BY 11 Environmental Research Letters reduced greening trend satellite observations of vegetation 30 year time series of NDVI on Svalbard effects of warming on vegetation productivity Journal article Peer reviewed 2016 ftninstnf 2021-12-23T07:17:21Z Satellite-aided studies of vegetation cover, biomass and productivity are becoming increasingly important formonitoring the effects of a changing climate on the biosphere. With their large spatial coverage and good temporal resolution, space-borne instruments are ideal to observe remote areas over extended time periods.However, long time series datasets with global coverage have inmany cases too lowspatial resolution for sparsely vegetated high latitude areas. This study hasmade use of a newly developed 30 year 1 km spatial resolution dataset from1986 to 2015, provided by theNOAAAVHRR series of satellites, in order to calculate the annualmaximumNDVI over parts of Svalbard (78°N). This parameter is indicative of vegetation productivity and has therefore enabled us to study long-term changes in greeningwithin the Inner Fjord Zone on Svalbard. In addition, localmeteorological data are available to linkmaximumNDVI values to the temporal behavior of themean growing season (summer) temperature for the study area.Over the 30 year period,we find positive trends in bothmaximum NDVI (average increase of 29%) and mean summer temperature (59%),which were significantly positively correlated with each other. This suggests a temporal greening trendmediated by summer warming. However, as also recently reported for lower latitudes, the strength of the year-to-year correlation between maximumNDVI andmean summer temperature decreased, suggesting that the response of vegetation to summerwarming has not remained the same over the entire study period. Article in Journal/Newspaper Arctic Svalbard Norwegian Institute for Nature Research: Brage NINA Arctic Svalbard |
institution |
Open Polar |
collection |
Norwegian Institute for Nature Research: Brage NINA |
op_collection_id |
ftninstnf |
language |
English |
topic |
reduced greening trend satellite observations of vegetation 30 year time series of NDVI on Svalbard effects of warming on vegetation productivity |
spellingShingle |
reduced greening trend satellite observations of vegetation 30 year time series of NDVI on Svalbard effects of warming on vegetation productivity Vickers, Hannah Høgda, Kjell Arild Solbø, Stian Karlsen, Stein Rune Tømmervik, Hans Aanes, Ronny Hansen, Brage Bremset Changes in greening in the High Arctic - insights from a 30-year AVHRR max NDVI dataset for Svalbard |
topic_facet |
reduced greening trend satellite observations of vegetation 30 year time series of NDVI on Svalbard effects of warming on vegetation productivity |
description |
Satellite-aided studies of vegetation cover, biomass and productivity are becoming increasingly important formonitoring the effects of a changing climate on the biosphere. With their large spatial coverage and good temporal resolution, space-borne instruments are ideal to observe remote areas over extended time periods.However, long time series datasets with global coverage have inmany cases too lowspatial resolution for sparsely vegetated high latitude areas. This study hasmade use of a newly developed 30 year 1 km spatial resolution dataset from1986 to 2015, provided by theNOAAAVHRR series of satellites, in order to calculate the annualmaximumNDVI over parts of Svalbard (78°N). This parameter is indicative of vegetation productivity and has therefore enabled us to study long-term changes in greeningwithin the Inner Fjord Zone on Svalbard. In addition, localmeteorological data are available to linkmaximumNDVI values to the temporal behavior of themean growing season (summer) temperature for the study area.Over the 30 year period,we find positive trends in bothmaximum NDVI (average increase of 29%) and mean summer temperature (59%),which were significantly positively correlated with each other. This suggests a temporal greening trendmediated by summer warming. However, as also recently reported for lower latitudes, the strength of the year-to-year correlation between maximumNDVI andmean summer temperature decreased, suggesting that the response of vegetation to summerwarming has not remained the same over the entire study period. |
format |
Article in Journal/Newspaper |
author |
Vickers, Hannah Høgda, Kjell Arild Solbø, Stian Karlsen, Stein Rune Tømmervik, Hans Aanes, Ronny Hansen, Brage Bremset |
author_facet |
Vickers, Hannah Høgda, Kjell Arild Solbø, Stian Karlsen, Stein Rune Tømmervik, Hans Aanes, Ronny Hansen, Brage Bremset |
author_sort |
Vickers, Hannah |
title |
Changes in greening in the High Arctic - insights from a 30-year AVHRR max NDVI dataset for Svalbard |
title_short |
Changes in greening in the High Arctic - insights from a 30-year AVHRR max NDVI dataset for Svalbard |
title_full |
Changes in greening in the High Arctic - insights from a 30-year AVHRR max NDVI dataset for Svalbard |
title_fullStr |
Changes in greening in the High Arctic - insights from a 30-year AVHRR max NDVI dataset for Svalbard |
title_full_unstemmed |
Changes in greening in the High Arctic - insights from a 30-year AVHRR max NDVI dataset for Svalbard |
title_sort |
changes in greening in the high arctic - insights from a 30-year avhrr max ndvi dataset for svalbard |
publishDate |
2016 |
url |
http://hdl.handle.net/11250/2419193 |
op_coverage |
Svalbard |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Svalbard |
genre_facet |
Arctic Svalbard |
op_source |
11 Environmental Research Letters |
op_relation |
Environmental Research Letters 11 2016 urn:issn:1748-9326 http://hdl.handle.net/11250/2419193 cristin:1386686 |
op_rights |
Navngivelse 3.0 Norge http://creativecommons.org/licenses/by/3.0/no/ |
op_rightsnorm |
CC-BY |
_version_ |
1766341891849191424 |