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 for monitoring 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...
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Online Access: | https://doi.org/10.1088/1748-9326/11/10/105004 https://doaj.org/article/91f84b4482c14b33a38f5ab9cb1a9256 |
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ftdoajarticles:oai:doaj.org/article:91f84b4482c14b33a38f5ab9cb1a9256 2023-09-05T13:17:40+02:00 Changes in greening in the high Arctic: insights from a 30 year AVHRR max NDVI dataset for Svalbard Hannah Vickers Kjell Arild Høgda Stian Solbø Stein Rune Karlsen Hans Tømmervik Ronny Aanes Brage B Hansen 2016-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/11/10/105004 https://doaj.org/article/91f84b4482c14b33a38f5ab9cb1a9256 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/11/10/105004 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/11/10/105004 1748-9326 https://doaj.org/article/91f84b4482c14b33a38f5ab9cb1a9256 Environmental Research Letters, Vol 11, Iss 10, p 105004 (2016) reduced greening trend satellite observations of vegetation 30 year time series of NDVI on Svalbard effects of warming on vegetation productivity Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2016 ftdoajarticles https://doi.org/10.1088/1748-9326/11/10/105004 2023-08-13T00:37:52Z Satellite-aided studies of vegetation cover, biomass and productivity are becoming increasingly important for monitoring 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 in many cases too low spatial resolution for sparsely vegetated high latitude areas. This study has made use of a newly developed 30 year 1 km spatial resolution dataset from 1986 to 2015, provided by the NOAA AVHRR series of satellites, in order to calculate the annual maximum NDVI over parts of Svalbard (78°N). This parameter is indicative of vegetation productivity and has therefore enabled us to study long-term changes in greening within the Inner Fjord Zone on Svalbard. In addition, local meteorological data are available to link maximum NDVI values to the temporal behavior of the mean growing season (summer) temperature for the study area. Over the 30 year period, we find positive trends in both maximum NDVI (average increase of 29%) and mean summer temperature (59%), which were significantly positively correlated with each other. This suggests a temporal greening trend mediated by summer warming. However, as also recently reported for lower latitudes, the strength of the year-to-year correlation between maximum NDVI and mean summer temperature decreased, suggesting that the response of vegetation to summer warming has not remained the same over the entire study period. Article in Journal/Newspaper Arctic Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Environmental Research Letters 11 10 105004 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
reduced greening trend satellite observations of vegetation 30 year time series of NDVI on Svalbard effects of warming on vegetation productivity Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
reduced greening trend satellite observations of vegetation 30 year time series of NDVI on Svalbard effects of warming on vegetation productivity Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Hannah Vickers Kjell Arild Høgda Stian Solbø Stein Rune Karlsen Hans Tømmervik Ronny Aanes Brage B Hansen 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 Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
Satellite-aided studies of vegetation cover, biomass and productivity are becoming increasingly important for monitoring 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 in many cases too low spatial resolution for sparsely vegetated high latitude areas. This study has made use of a newly developed 30 year 1 km spatial resolution dataset from 1986 to 2015, provided by the NOAA AVHRR series of satellites, in order to calculate the annual maximum NDVI over parts of Svalbard (78°N). This parameter is indicative of vegetation productivity and has therefore enabled us to study long-term changes in greening within the Inner Fjord Zone on Svalbard. In addition, local meteorological data are available to link maximum NDVI values to the temporal behavior of the mean growing season (summer) temperature for the study area. Over the 30 year period, we find positive trends in both maximum NDVI (average increase of 29%) and mean summer temperature (59%), which were significantly positively correlated with each other. This suggests a temporal greening trend mediated by summer warming. However, as also recently reported for lower latitudes, the strength of the year-to-year correlation between maximum NDVI and mean summer temperature decreased, suggesting that the response of vegetation to summer warming has not remained the same over the entire study period. |
format |
Article in Journal/Newspaper |
author |
Hannah Vickers Kjell Arild Høgda Stian Solbø Stein Rune Karlsen Hans Tømmervik Ronny Aanes Brage B Hansen |
author_facet |
Hannah Vickers Kjell Arild Høgda Stian Solbø Stein Rune Karlsen Hans Tømmervik Ronny Aanes Brage B Hansen |
author_sort |
Hannah Vickers |
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 |
https://doi.org/10.1088/1748-9326/11/10/105004 https://doaj.org/article/91f84b4482c14b33a38f5ab9cb1a9256 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Svalbard |
genre_facet |
Arctic Svalbard |
op_source |
Environmental Research Letters, Vol 11, Iss 10, p 105004 (2016) |
op_relation |
https://doi.org/10.1088/1748-9326/11/10/105004 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/11/10/105004 1748-9326 https://doaj.org/article/91f84b4482c14b33a38f5ab9cb1a9256 |
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_ |
1776198752166477824 |