The North Atlantic oscillation and European vegetation dynamics
The relationship between vegetation greenness and the North Atlantic Oscillation (NAO) is assessed over Europe. The study covers the 21-year period from 1982 to 2002 and is based on monthly composites of the Normalised Difference Vegetation Index (NDVI) and Brightness Temperature from the Global Inv...
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Royal Meteorological Society
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ftunivtecnical:oai:www.repository.utl.pt:10400.5/6004 2023-05-15T17:31:33+02:00 The North Atlantic oscillation and European vegetation dynamics Gouveia, Célia Trigo, Ricardo M. Camara, Carlos C. Libonati, Renata Pereira, J.M.C. 2008 http://hdl.handle.net/10400.5/6004 eng eng Royal Meteorological Society www.interscience.wiley.com "International Journal of Climatology". ISSN 0899-8418. 28 (2008) 1835-1847 0899-8418 http://hdl.handle.net/10400.5/6004 openAccess NDVI vegetation cycle NAO climate impacts Iberia Northeastern Europe article 2008 ftunivtecnical 2021-04-04T20:23:29Z The relationship between vegetation greenness and the North Atlantic Oscillation (NAO) is assessed over Europe. The study covers the 21-year period from 1982 to 2002 and is based on monthly composites of the Normalised Difference Vegetation Index (NDVI) and Brightness Temperature from the Global Inventory Monitoring and Modelling System (GIMMS) as well as on monthly precipitation from the Global Precipitation Climatology Centre (GPCC). A systematic analysis is first performed of point correlation fields over the 21-year period between the winter NAO index and spring and summer NDVI, followed by an assessment of the vegetation response to precipitation and temperature conditions in winter, over two contrasting regions, namely the Iberian Peninsula and Northeastern Europe. Finally, the impact of NAO on vegetation dynamics over the two regions is evaluated by studying the corresponding annual cycles of NDVI and comparing their behaviour for years associated with opposite NAO phases. Over the Iberian Peninsula there is strong evidence that positive (negative) values of winter NAO induce low (high) vegetation activity in the following spring and summer seasons. This feature is mainly associated with the impact of NAO on winter precipitation, together with the strong dependence of spring and summer NDVI on water availability during the previous winter. Northeastern Europe shows a different behaviour, with positive (negative) values of winter NAO inducing high (low) values of NDVI in spring, but low (high) values of NDVI in summer. This behaviour mainly results from the strong impact of NAO on winter temperature, associated with the critical dependence of vegetation growth on the combined effect of warm conditions and water availability during the winter season Article in Journal/Newspaper North Atlantic North Atlantic oscillation Technical University of Lisbon: UTL Repository |
institution |
Open Polar |
collection |
Technical University of Lisbon: UTL Repository |
op_collection_id |
ftunivtecnical |
language |
English |
topic |
NDVI vegetation cycle NAO climate impacts Iberia Northeastern Europe |
spellingShingle |
NDVI vegetation cycle NAO climate impacts Iberia Northeastern Europe Gouveia, Célia Trigo, Ricardo M. Camara, Carlos C. Libonati, Renata Pereira, J.M.C. The North Atlantic oscillation and European vegetation dynamics |
topic_facet |
NDVI vegetation cycle NAO climate impacts Iberia Northeastern Europe |
description |
The relationship between vegetation greenness and the North Atlantic Oscillation (NAO) is assessed over Europe. The study covers the 21-year period from 1982 to 2002 and is based on monthly composites of the Normalised Difference Vegetation Index (NDVI) and Brightness Temperature from the Global Inventory Monitoring and Modelling System (GIMMS) as well as on monthly precipitation from the Global Precipitation Climatology Centre (GPCC). A systematic analysis is first performed of point correlation fields over the 21-year period between the winter NAO index and spring and summer NDVI, followed by an assessment of the vegetation response to precipitation and temperature conditions in winter, over two contrasting regions, namely the Iberian Peninsula and Northeastern Europe. Finally, the impact of NAO on vegetation dynamics over the two regions is evaluated by studying the corresponding annual cycles of NDVI and comparing their behaviour for years associated with opposite NAO phases. Over the Iberian Peninsula there is strong evidence that positive (negative) values of winter NAO induce low (high) vegetation activity in the following spring and summer seasons. This feature is mainly associated with the impact of NAO on winter precipitation, together with the strong dependence of spring and summer NDVI on water availability during the previous winter. Northeastern Europe shows a different behaviour, with positive (negative) values of winter NAO inducing high (low) values of NDVI in spring, but low (high) values of NDVI in summer. This behaviour mainly results from the strong impact of NAO on winter temperature, associated with the critical dependence of vegetation growth on the combined effect of warm conditions and water availability during the winter season |
format |
Article in Journal/Newspaper |
author |
Gouveia, Célia Trigo, Ricardo M. Camara, Carlos C. Libonati, Renata Pereira, J.M.C. |
author_facet |
Gouveia, Célia Trigo, Ricardo M. Camara, Carlos C. Libonati, Renata Pereira, J.M.C. |
author_sort |
Gouveia, Célia |
title |
The North Atlantic oscillation and European vegetation dynamics |
title_short |
The North Atlantic oscillation and European vegetation dynamics |
title_full |
The North Atlantic oscillation and European vegetation dynamics |
title_fullStr |
The North Atlantic oscillation and European vegetation dynamics |
title_full_unstemmed |
The North Atlantic oscillation and European vegetation dynamics |
title_sort |
north atlantic oscillation and european vegetation dynamics |
publisher |
Royal Meteorological Society |
publishDate |
2008 |
url |
http://hdl.handle.net/10400.5/6004 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
www.interscience.wiley.com "International Journal of Climatology". ISSN 0899-8418. 28 (2008) 1835-1847 0899-8418 http://hdl.handle.net/10400.5/6004 |
op_rights |
openAccess |
_version_ |
1766129209720176640 |