English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/35522
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Influence of seasonal pressure patterns on temporal variability of vegetation activity in Central Siberia

AutorVicente Serrano, Sergio M. ; Kergoat, Laurent
Palabras claveVegetation activity
NDVI
Atmospheric circulation
Teleconnections
Principal component analysis
Climate–vegetation relationships
Siberia
Fecha de publicación15-mar-2006
EditorWiley-Blackwell
Royal Meteorological Society (Great Britain)
CitaciónInternational Journal of Climatology 26(3): 303-321 (2006)
ResumenThis paper analyses the spatial distribution of the inter-annual variability of vegetation activity in central Siberia and its relationship with atmospheric circulation variability. We used NOAA-AVHRR NDVI series from Pathfinder Land Data Set at 1° of spatial resolution, and we calculated the annual vegetation activity in each pixel (aNDVI) from 1982 to 2001. Principal component analysis (PCA) was used to determine the general spatial patterns of inter-annual variability of vegetation activity. We identified three main modes, which explain more than 50% of the total variance, each corresponding to a large region. By means of surface pressure grids, we analysed the main patterns of the seasonal atmospheric circulation in the study area: its variability was summarised by means of a few circulation modes and the patterns differ significantly between winter, spring and summer. However, a pattern with a North–South dipole structure represents the general spatial pattern of atmospheric circulation. We investigated the effect of seasonal atmospheric circulation patterns on the inter-annual variation of vegetation activity. In general, the strongest relationships between the atmospheric circulation variability, climate and the aNDVI variability were found in areas where the climatic characteristics are more limiting for the vegetation development, such as the northern regions. This may be explained by the fact that in these areas the variability of atmospheric circulation modes determines summer temperatures, which have a direct impact on vegetation activity.
Descripción19 páginas, 11 figuras, 6 tablas.-- El documento se encuentra en su versión post-print.-- et al.
Versión del editorhttp://dx.doi.org/10.1002/joc.1244
URIhttp://hdl.handle.net/10261/35522
DOI10.1002/joc.1244
ISSN0899-8418
Aparece en las colecciones: (IPE) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
international journal of climatology, (2006) 26, 303-321.doc473 kBMicrosoft WordVisualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.