Changes in greening in the High Arctic - insights from a 30-year AVHRR max NDVI dataset for Svalbard
Satellite-aided studies ofvegetation cover, biomass and productivity are becoming increasingly important for monitoring the effects ofa changing climate on the biosphere. With their large spatial coverage and good temporal resolution, space-borne instruments are ideal to observe remote areas over ex...
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Online Access: | http://hdl.handle.net/11250/2420133 https://doi.org/10.1088/1748-9326/11/10/105004 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2420133 2023-05-15T15:12:46+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 2016-11-02T12:46:15Z http://hdl.handle.net/11250/2420133 https://doi.org/10.1088/1748-9326/11/10/105004 eng eng IOP Publishing Environmental Research Letters 2016 urn:issn:1748-9326 http://hdl.handle.net/11250/2420133 https://doi.org/10.1088/1748-9326/11/10/105004 cristin:1386686 https://creativecommons.org/licenses/by/3.0/ 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 ftntnutrondheimi https://doi.org/10.1088/1748-9326/11/10/105004 2019-09-17T06:52:02Z Satellite-aided studies ofvegetation cover, biomass and productivity are becoming increasingly important for monitoring the effects ofa 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 seriesdatasets with global coverage have in many cases too lowspatial resolution for sparsely vegetated high latitude areas. Thisstudy has made use ofa newly developed 30 year 1 kmspatial resolution dataset from 1986 to 2015, provided bythe NOAAAVHRR series ofsatellites, in order to calculate the annual maximum NDVI over parts of Svalbard ( 78 ° N ) .This parameterisindicative ofvegetation productivity and has therefore enabled usto study long-term changes in greeningwithin the Inner Fjord Zone on Svalbard. In addition, local meteorological data are availabletolinkmaximumNDVIvaluesto the temporalbehaviorofthe meangrowingseason ( summer ) temperature for the study area. Overthe 30 yearperiod, we fi nd positive trends in both maximum NDVI ( average increase of29% ) and mean summer temperature ( 59% ) , which were signi fi cantly positively correlated with each other.Thissuggests a temporal greening trend mediated by summer warming. However, as also recently reported for lower latitudes, the strength ofthe year-to-year correlation between maximum NDVI and mean summer temperature decreased, suggestingthatthe response of vegetationto summer warming has not remainedthe same overthe entire study period. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence . Any further distribution of this work must maintain attribution to the author ( s ) and the title of the work, journal citation and DO Article in Journal/Newspaper Arctic Svalbard NTNU Open Archive (Norwegian University of Science and Technology) Arctic Svalbard Environmental Research Letters 11 10 105004 |
institution |
Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
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 ofvegetation cover, biomass and productivity are becoming increasingly important for monitoring the effects ofa 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 seriesdatasets with global coverage have in many cases too lowspatial resolution for sparsely vegetated high latitude areas. Thisstudy has made use ofa newly developed 30 year 1 kmspatial resolution dataset from 1986 to 2015, provided bythe NOAAAVHRR series ofsatellites, in order to calculate the annual maximum NDVI over parts of Svalbard ( 78 ° N ) .This parameterisindicative ofvegetation productivity and has therefore enabled usto study long-term changes in greeningwithin the Inner Fjord Zone on Svalbard. In addition, local meteorological data are availabletolinkmaximumNDVIvaluesto the temporalbehaviorofthe meangrowingseason ( summer ) temperature for the study area. Overthe 30 yearperiod, we fi nd positive trends in both maximum NDVI ( average increase of29% ) and mean summer temperature ( 59% ) , which were signi fi cantly positively correlated with each other.Thissuggests a temporal greening trend mediated by summer warming. However, as also recently reported for lower latitudes, the strength ofthe year-to-year correlation between maximum NDVI and mean summer temperature decreased, suggestingthatthe response of vegetationto summer warming has not remainedthe same overthe entire study period. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence . Any further distribution of this work must maintain attribution to the author ( s ) and the title of the work, journal citation and DO |
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 |
publisher |
IOP Publishing |
publishDate |
2016 |
url |
http://hdl.handle.net/11250/2420133 https://doi.org/10.1088/1748-9326/11/10/105004 |
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 2016 urn:issn:1748-9326 http://hdl.handle.net/11250/2420133 https://doi.org/10.1088/1748-9326/11/10/105004 cristin:1386686 |
op_rights |
https://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1088/1748-9326/11/10/105004 |
container_title |
Environmental Research Letters |
container_volume |
11 |
container_issue |
10 |
container_start_page |
105004 |
_version_ |
1766343410898173952 |