A
Aleixandre Verger
Researcher at Spanish National Research Council
Publications - 80
Citations - 2739
Aleixandre Verger is an academic researcher from Spanish National Research Council. The author has contributed to research in topics: Leaf area index & Vegetation. The author has an hindex of 25, co-authored 65 publications receiving 1996 citations. Previous affiliations of Aleixandre Verger include University of Valencia & University of Liège.
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Journal ArticleDOI
Remote sensing of vegetation dynamics in drylands: Evaluating vegetation optical depth (VOD) using AVHRR NDVI and in situ green biomass data over West African Sahel
Feng Tian,Feng Tian,Martin Brandt,Yi Y. Liu,Aleixandre Verger,Torbern Tagesson,Abdoul Aziz Diouf,Kjeld Rasmussen,Cheikh Mbow,Yunjia Wang,Rasmus Fensholt +10 more
TL;DR: In this paper, the authors assess the capability of a long-term VOD dataset (1992-2011) to capture the temporal and spatial variability of in situ measured green biomass (herbaceous mass and woody plant foliage mass) in the semi-arid Senegalese Sahel.
Journal ArticleDOI
A comparison of methods for smoothing and gap filling time series of remote sensing observations - application to MODIS LAI products
Sivasathivel Kandasamy,Frédéric Baret,Aleixandre Verger,Aleixandre Verger,Philippe Neveux,Marie Weiss +5 more
TL;DR: In this paper, the authors compared eight methods to improve the continuity by filling gaps and consistency by smoothing the time course of the MODIS leaf area index product for the period 2000-2008.
Journal ArticleDOI
Satellite passive microwaves reveal recent climate-induced carbon losses in African drylands.
Martin Brandt,Jean-Pierre Wigneron,Jérôme Chave,Torbern Tagesson,Josep Peñuelas,Philippe Ciais,Kjeld Rasmussen,Feng Tian,Cheikh Mbow,Amen Al-Yaari,Nemesio Rodriguez-Fernandez,Guy Schurgers,Wenmin Zhang,Wenmin Zhang,Jinfeng Chang,Yann Kerr,Aleixandre Verger,Compton J. Tucker,Arnaud Mialon,Laura Vang Rasmussen,Lei Fan,Rasmus Fensholt +21 more
TL;DR: This study demonstrates the applicability of L-VOD to monitor the dynamics of carbon loss and gain due to weather variations, and the importance of the highly dynamic and vulnerable carbon pool of dryland savannahs for the global carbon balance, despite the relatively low carbon stock per unit area.
Journal ArticleDOI
Human population growth offsets climate-driven increase in woody vegetation in sub-Saharan Africa
Martin Brandt,Kjeld Rasmussen,Josep Peñuelas,Feng Tian,Guy Schurgers,Aleixandre Verger,Ole Mertz,John R. B. Palmer,Rasmus Fensholt +8 more
TL;DR: A nuanced picture of changes in woody cover in Africa is presented, which challenges widely held views of a general and ongoing reduction of the woody vegetation in Africa.
Journal ArticleDOI
Green area index from an unmanned aerial system over wheat and rapeseed crops
Aleixandre Verger,Nathalie Vigneau,Corentin Chéron,Jean-Marc Gilliot,Jean-Marc Gilliot,Alexis Comar,Frédéric Baret +6 more
TL;DR: In this paper, a physically based algorithm for estimating green area index (GAI) from UAS acquisitions was described. But the accuracy of UAS GAI estimates over wheat and rapeseed crops was around 0.17 compared to 0.26 GAI in terms of RMSE.