Characterizing the Response of Vegetation Cover to Water Limitation in Africa Using Geostationary Satellites

Detalhes bibliográficos
Autor(a) principal: Küçük, Çağlar
Data de Publicação: 2022
Outros Autores: Koirala, Sujan, Carvalhais, Nuno, Miralles, Diego G., Reichstein, Markus, Jung, Martin
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/144486
Resumo: Publisher Copyright: © 2022 The Authors. Journal of Advances in Modeling Earth Systems published by Wiley Periodicals LLC on behalf of American Geophysical Union.
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spelling Characterizing the Response of Vegetation Cover to Water Limitation in Africa Using Geostationary SatellitesAfricaecohydrologyfractional vegetation covergeostationarywater limitationGlobal and Planetary ChangeEnvironmental ChemistryEarth and Planetary Sciences(all)Publisher Copyright: © 2022 The Authors. Journal of Advances in Modeling Earth Systems published by Wiley Periodicals LLC on behalf of American Geophysical Union.Hydrological interactions between vegetation, soil, and topography are complex, and heterogeneous in semi-arid landscapes. This along with data scarcity poses challenges for large-scale modeling of vegetation-water interactions. Here, we exploit metrics derived from daily Meteosat data over Africa at ca. 5 km spatial resolution for ecohydrological analysis. Their spatial patterns are based on Fractional Vegetation Cover (FVC) time series and emphasize limiting conditions of the seasonal wet to dry transition: the minimum and maximum FVC of temporal record, the FVC decay rate and the FVC integral over the decay period. We investigate the relevance of these metrics for large scale ecohydrological studies by assessing their co-variation with soil moisture, and with topographic, soil, and vegetation factors. Consistent with our initial hypothesis, FVC minimum and maximum increase with soil moisture, while the FVC integral and decay rate peak at intermediate soil moisture. We find evidence for the relevance of topographic moisture variations in arid regions, which, counter-intuitively, is detectable in the maximum but not in the minimum FVC. We find no clear evidence for wide-spread occurrence of the “inverse texture effect” on FVC. The FVC integral over the decay period correlates with independent data sets of plant water storage capacity or rooting depth while correlations increase with aridity. In arid regions, the FVC decay rate decreases with canopy height and tree cover fraction as expected for ecosystems with a more conservative water-use strategy. Thus, our observation-based products have large potential for better understanding complex vegetation-water interactions from regional to continental scales.CENSE - Centro de Investigação em Ambiente e SustentabilidadeDCEA - Departamento de Ciências e Engenharia do AmbienteRUNKüçük, ÇağlarKoirala, SujanCarvalhais, NunoMiralles, Diego G.Reichstein, MarkusJung, Martin2022-10-05T22:16:00Z2022-032022-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article29application/pdfhttp://hdl.handle.net/10362/144486eng1942-2466PURE: 46293159https://doi.org/10.1029/2021MS002730info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T05:24:08Zoai:run.unl.pt:10362/144486Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:51:35.554265Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Characterizing the Response of Vegetation Cover to Water Limitation in Africa Using Geostationary Satellites
title Characterizing the Response of Vegetation Cover to Water Limitation in Africa Using Geostationary Satellites
spellingShingle Characterizing the Response of Vegetation Cover to Water Limitation in Africa Using Geostationary Satellites
Küçük, Çağlar
Africa
ecohydrology
fractional vegetation cover
geostationary
water limitation
Global and Planetary Change
Environmental Chemistry
Earth and Planetary Sciences(all)
title_short Characterizing the Response of Vegetation Cover to Water Limitation in Africa Using Geostationary Satellites
title_full Characterizing the Response of Vegetation Cover to Water Limitation in Africa Using Geostationary Satellites
title_fullStr Characterizing the Response of Vegetation Cover to Water Limitation in Africa Using Geostationary Satellites
title_full_unstemmed Characterizing the Response of Vegetation Cover to Water Limitation in Africa Using Geostationary Satellites
title_sort Characterizing the Response of Vegetation Cover to Water Limitation in Africa Using Geostationary Satellites
author Küçük, Çağlar
author_facet Küçük, Çağlar
Koirala, Sujan
Carvalhais, Nuno
Miralles, Diego G.
Reichstein, Markus
Jung, Martin
author_role author
author2 Koirala, Sujan
Carvalhais, Nuno
Miralles, Diego G.
Reichstein, Markus
Jung, Martin
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv CENSE - Centro de Investigação em Ambiente e Sustentabilidade
DCEA - Departamento de Ciências e Engenharia do Ambiente
RUN
dc.contributor.author.fl_str_mv Küçük, Çağlar
Koirala, Sujan
Carvalhais, Nuno
Miralles, Diego G.
Reichstein, Markus
Jung, Martin
dc.subject.por.fl_str_mv Africa
ecohydrology
fractional vegetation cover
geostationary
water limitation
Global and Planetary Change
Environmental Chemistry
Earth and Planetary Sciences(all)
topic Africa
ecohydrology
fractional vegetation cover
geostationary
water limitation
Global and Planetary Change
Environmental Chemistry
Earth and Planetary Sciences(all)
description Publisher Copyright: © 2022 The Authors. Journal of Advances in Modeling Earth Systems published by Wiley Periodicals LLC on behalf of American Geophysical Union.
publishDate 2022
dc.date.none.fl_str_mv 2022-10-05T22:16:00Z
2022-03
2022-03-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/144486
url http://hdl.handle.net/10362/144486
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1942-2466
PURE: 46293159
https://doi.org/10.1029/2021MS002730
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 29
application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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