elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Datenschutz | Kontakt | English
Schriftgröße: [-] Text [+]

Relationship between Spatiotemporal Variations of Climate, Snow Cover and Plant Phenology over the Alps - An Earth Observation-Based Analysis

Asam, Sarah und Callegari, Mattia und Matiu, Michael und Fiore, Giuseppe und De Gregorio, Ludovica und Jacob, Alexander und Menzel, Annette und Zebisch, Marc und Notarnicola, Claudia (2018) Relationship between Spatiotemporal Variations of Climate, Snow Cover and Plant Phenology over the Alps - An Earth Observation-Based Analysis. Remote Sensing, 10 (11), Seiten 1-26. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/rs10111757. ISSN 2072-4292.

[img] PDF
7MB

Offizielle URL: https://www.mdpi.com/2072-4292/10/11/1757

Kurzfassung

Alpine ecosystems are particularly sensitive to climate change, and therefore it is of significant interest to understand the relationships between phenology and its seasonal drivers in mountain areas. However, no alpine-wide assessment on the relationship between land surface phenology (LSP) patterns and its climatic drivers including snow exists. Here, an assessment of the influence of snow cover variations on vegetation phenology is presented, which is based on a 17-year time-series of MODIS data. From this data snow cover duration (SCD) and phenology metrics based on the Normalized Difference Vegetation Index (NDVI) have been extracted at 250 m resolution for the entire European Alps. The combined influence of additional climate drivers on phenology are shown on a regional scale for the Italian province of South Tyrol using reanalyzed climate data. The relationship between vegetation and snow metrics strongly depended on altitude. Temporal trends towards an earlier onset of vegetation growth, increasing monthly mean NDVI in spring and late summer, as well as shorter SCD were observed, but they were mostly non-significant and the magnitude of these tendencies differed by altitude. Significant negative correlations between monthly mean NDVI and SCD were observed for 15-55% of all vegetated pixels, especially from December to April and in altitudes from 1000-2000 m. On the regional scale of South Tyrol, the seasonality of NDVI and SCD achieved the highest share of correlating pixels above 1500 m, while at lower elevations mean temperature correlated best. Examining the combined effect of climate variables, for average altitude and exposition, SCD had the highest effect on NDVI, followed by mean temperature and radiation. The presented analysis allows to assess the spatiotemporal patterns of earth-observation based snow and vegetation metrics over the Alps, as well as to understand the relative importance of snow as phenological driver with respect to other climate variables

elib-URL des Eintrags:https://elib.dlr.de/123049/
Dokumentart:Zeitschriftenbeitrag
Titel:Relationship between Spatiotemporal Variations of Climate, Snow Cover and Plant Phenology over the Alps - An Earth Observation-Based Analysis
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Asam, Sarahsarah.asam (at) dlr.dehttps://orcid.org/0000-0002-7302-6813NICHT SPEZIFIZIERT
Callegari, Mattiamattia.callegari (at) eurac.eduNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Matiu, Michaelmichaelmatiu (at) gmail.comNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Fiore, GiuseppeNICHT SPEZIFIZIERTNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
De Gregorio, LudovicaLudovica.DeGregorio (at) eurac.eduNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Jacob, Alexanderalexander.jacob (at) eurac.eduNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Menzel, Annetteamenzel (at) wzw.tum.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Zebisch, Marcmarc.zebisch (at) eurac.eduNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Notarnicola, Claudiaclaudia.notarnicola (at) eurac.eduNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:7 November 2018
Erschienen in:Remote Sensing
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:10
DOI:10.3390/rs10111757
Seitenbereich:Seiten 1-26
Verlag:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:2072-4292
Status:veröffentlicht
Stichwörter:mountains; phenology; NDVI; snow cover; climate variability; impact of climate change; MODIS; Alps
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Fernerkundung u. Geoforschung
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Deutsches Fernerkundungsdatenzentrum > Dynamik der Landoberfläche
Hinterlegt von: Asam, Dr. Sarah
Hinterlegt am:13 Nov 2018 13:33
Letzte Änderung:02 Nov 2023 09:39

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Gestaltung Webseite und Datenbank: Copyright © Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.