Changes in Onset of Vegetation Growth on Svalbard, 2000–2020
The global temperature is increasing, and this is affecting the vegetation phenology in many parts of the world. The most prominent changes occur at northern latitudes such as our study area, which is Svalbard, located between 76°30′N and 80°50′N. A cloud-free time series of MODIS-NDVI data was proc...
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ftdoajarticles:oai:doaj.org/article:9611663a1c3843e097ca8264671203b6 2023-05-15T15:08:25+02:00 Changes in Onset of Vegetation Growth on Svalbard, 2000–2020 Stein Rune Karlsen Arve Elvebakk Hans Tømmervik Santiago Belda Laura Stendardi 2022-12-01T00:00:00Z https://doi.org/10.3390/rs14246346 https://doaj.org/article/9611663a1c3843e097ca8264671203b6 EN eng MDPI AG https://www.mdpi.com/2072-4292/14/24/6346 https://doaj.org/toc/2072-4292 doi:10.3390/rs14246346 2072-4292 https://doaj.org/article/9611663a1c3843e097ca8264671203b6 Remote Sensing, Vol 14, Iss 6346, p 6346 (2022) MODIS NDVI time series onset of vegetation growth trend Arctic Science Q article 2022 ftdoajarticles https://doi.org/10.3390/rs14246346 2022-12-30T19:30:26Z The global temperature is increasing, and this is affecting the vegetation phenology in many parts of the world. The most prominent changes occur at northern latitudes such as our study area, which is Svalbard, located between 76°30′N and 80°50′N. A cloud-free time series of MODIS-NDVI data was processed. The dataset was interpolated to daily data during the 2000–2020 period with a 231.65 m pixel resolution. The onset of vegetation growth was mapped with a NDVI threshold method which corresponds well with a recent Sentinel-2 NDVI-based mapping of the onset of vegetation growth, which was in turn validated by a network of in-situ phenological data from time lapse cameras. The results show that the years 2000 and 2008 were extreme in terms of the late onset of vegetation growth. The year 2020 had the earliest onset of vegetation growth on Svalbard during the 21-year study. Each year since 2013 had an earlier or equally early timing in terms of the onset of the growth season compared with the 2000–2020 average. A linear trend of 0.57 days per year resulted in an earlier onset of growth of 12 days on average for the entire archipelago of Svalbard in 2020 compared to 2000. Article in Journal/Newspaper Arctic Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Remote Sensing 14 24 6346 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
MODIS NDVI time series onset of vegetation growth trend Arctic Science Q |
spellingShingle |
MODIS NDVI time series onset of vegetation growth trend Arctic Science Q Stein Rune Karlsen Arve Elvebakk Hans Tømmervik Santiago Belda Laura Stendardi Changes in Onset of Vegetation Growth on Svalbard, 2000–2020 |
topic_facet |
MODIS NDVI time series onset of vegetation growth trend Arctic Science Q |
description |
The global temperature is increasing, and this is affecting the vegetation phenology in many parts of the world. The most prominent changes occur at northern latitudes such as our study area, which is Svalbard, located between 76°30′N and 80°50′N. A cloud-free time series of MODIS-NDVI data was processed. The dataset was interpolated to daily data during the 2000–2020 period with a 231.65 m pixel resolution. The onset of vegetation growth was mapped with a NDVI threshold method which corresponds well with a recent Sentinel-2 NDVI-based mapping of the onset of vegetation growth, which was in turn validated by a network of in-situ phenological data from time lapse cameras. The results show that the years 2000 and 2008 were extreme in terms of the late onset of vegetation growth. The year 2020 had the earliest onset of vegetation growth on Svalbard during the 21-year study. Each year since 2013 had an earlier or equally early timing in terms of the onset of the growth season compared with the 2000–2020 average. A linear trend of 0.57 days per year resulted in an earlier onset of growth of 12 days on average for the entire archipelago of Svalbard in 2020 compared to 2000. |
format |
Article in Journal/Newspaper |
author |
Stein Rune Karlsen Arve Elvebakk Hans Tømmervik Santiago Belda Laura Stendardi |
author_facet |
Stein Rune Karlsen Arve Elvebakk Hans Tømmervik Santiago Belda Laura Stendardi |
author_sort |
Stein Rune Karlsen |
title |
Changes in Onset of Vegetation Growth on Svalbard, 2000–2020 |
title_short |
Changes in Onset of Vegetation Growth on Svalbard, 2000–2020 |
title_full |
Changes in Onset of Vegetation Growth on Svalbard, 2000–2020 |
title_fullStr |
Changes in Onset of Vegetation Growth on Svalbard, 2000–2020 |
title_full_unstemmed |
Changes in Onset of Vegetation Growth on Svalbard, 2000–2020 |
title_sort |
changes in onset of vegetation growth on svalbard, 2000–2020 |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/rs14246346 https://doaj.org/article/9611663a1c3843e097ca8264671203b6 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Svalbard |
genre_facet |
Arctic Svalbard |
op_source |
Remote Sensing, Vol 14, Iss 6346, p 6346 (2022) |
op_relation |
https://www.mdpi.com/2072-4292/14/24/6346 https://doaj.org/toc/2072-4292 doi:10.3390/rs14246346 2072-4292 https://doaj.org/article/9611663a1c3843e097ca8264671203b6 |
op_doi |
https://doi.org/10.3390/rs14246346 |
container_title |
Remote Sensing |
container_volume |
14 |
container_issue |
24 |
container_start_page |
6346 |
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1766339787693752320 |