Retrieval and validation of forest background reflectivity from daily Moderate Resolution Imaging Spectroradiometer (MODIS) bidirectional reflectance distribution function (BRDF) data across European forests
Jan Pisek
(1)
,
Angela Erb
(2)
,
Lauri Korhonen
(3)
,
Tobias Biermann
(4)
,
Arnaud Carrara
(5)
,
Edoardo Cremonese
(6)
,
Matthias Cuntz
(7)
,
Silvano Fares
(8)
,
Giacomo Gerosa
(9)
,
Thomas Grünwald
(10)
,
Niklas Hase
(11)
,
Michal Heliasz
(4)
,
Andreas Ibrom
(12)
,
Alexander Knohl
(13)
,
Johannes Kobler
(14)
,
Bart Kruijt
(15)
,
Holger Lange
(16)
,
Leena Leppänen
(17)
,
Jean-Marc Limousin
(18)
,
Francisco Ramon Lopez Serrano
(19)
,
Denis Loustau
(20)
,
Petr Lukeš
,
Lars Lundin
(21)
,
Riccardo Marzuoli
(22)
,
Meelis Mölder
(4)
,
Leonardo Montagnani
(23, 24)
,
Johan Neirynck
(25)
,
Matthias Peichl
(21)
,
Corinna Rebmann
(11)
,
Eva Rubio
(19)
,
Margarida Santos-Reis
(26)
,
Crystal Schaaf
(2)
,
Marius Schmidt
(27)
,
Guillaume Simioni
(28)
,
Kamel Soudani
(29)
,
Caroline Vincke
(30)
1
Tartu Observatory
2 UMass Boston - University of Massachusetts [Boston]
3 University of Eastern Finland
4 Skane University Hospital [Lund]
5 Fundacion CEAM
6 ARPA Valle d'Aosta (Aosta Valley Regional Environmental Protection Agency)
7 SILVA - SILVA
8 CNR - National Research Council of Italy | Consiglio Nazionale delle Ricerche
9 Unicatt - Università cattolica del Sacro Cuore [Milano]
10 TU Dresden - Technische Universität Dresden = Dresden University of Technology
11 UFZ - Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research
12 DTU - Danmarks Tekniske Universitet = Technical University of Denmark
13 Georg-August-University = Georg-August-Universität Göttingen
14 Umweltbundesamt GmbH = Environment Agency Austria
15 WUR - Wageningen University and Research [Wageningen]
16 NIBIO - Norsk institutt for bioøkonomi=Norwegian Institute of Bioeconomy Research
17 FMI - Finnish Meteorological Institute
18 CEFE - Centre d’Ecologie Fonctionnelle et Evolutive
19 UCLM - Universidad de Castilla-La Mancha = University of Castilla-La Mancha
20 UMR ISPA - Interactions Sol Plante Atmosphère
21 SLU - Swedish University of Agricultural Sciences = Sveriges lantbruksuniversitet
22 Unicatt - Università cattolica del Sacro Cuore [Brescia]
23 Free University of Bozen-Bolzano
24 APB - Autonomous Province of Bolzano
25 INBO - Research Institute for Nature and Forest
26 cE3c - Centre for Ecology - Evolution and Environmental Changes
27 FZJ - Forschungszentrum Jülich GmbH | Centre de recherche de Jülich | Jülich Research Centre
28 URFM - Ecologie des Forêts Méditerranéennes
29 ESE - Ecologie Systématique et Evolution
30 UCL - Université Catholique de Louvain = Catholic University of Louvain
2 UMass Boston - University of Massachusetts [Boston]
3 University of Eastern Finland
4 Skane University Hospital [Lund]
5 Fundacion CEAM
6 ARPA Valle d'Aosta (Aosta Valley Regional Environmental Protection Agency)
7 SILVA - SILVA
8 CNR - National Research Council of Italy | Consiglio Nazionale delle Ricerche
9 Unicatt - Università cattolica del Sacro Cuore [Milano]
10 TU Dresden - Technische Universität Dresden = Dresden University of Technology
11 UFZ - Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research
12 DTU - Danmarks Tekniske Universitet = Technical University of Denmark
13 Georg-August-University = Georg-August-Universität Göttingen
14 Umweltbundesamt GmbH = Environment Agency Austria
15 WUR - Wageningen University and Research [Wageningen]
16 NIBIO - Norsk institutt for bioøkonomi=Norwegian Institute of Bioeconomy Research
17 FMI - Finnish Meteorological Institute
18 CEFE - Centre d’Ecologie Fonctionnelle et Evolutive
19 UCLM - Universidad de Castilla-La Mancha = University of Castilla-La Mancha
20 UMR ISPA - Interactions Sol Plante Atmosphère
21 SLU - Swedish University of Agricultural Sciences = Sveriges lantbruksuniversitet
22 Unicatt - Università cattolica del Sacro Cuore [Brescia]
23 Free University of Bozen-Bolzano
24 APB - Autonomous Province of Bolzano
25 INBO - Research Institute for Nature and Forest
26 cE3c - Centre for Ecology - Evolution and Environmental Changes
27 FZJ - Forschungszentrum Jülich GmbH | Centre de recherche de Jülich | Jülich Research Centre
28 URFM - Ecologie des Forêts Méditerranéennes
29 ESE - Ecologie Systématique et Evolution
30 UCL - Université Catholique de Louvain = Catholic University of Louvain
Lauri Korhonen
- Fonction : Auteur
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- ORCID : 0000-0002-9352-0114
Tobias Biermann
- Fonction : Auteur
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- ORCID : 0000-0001-8538-1495
Edoardo Cremonese
- Fonction : Auteur
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- ORCID : 0000-0002-6708-8532
Matthias Cuntz
- Fonction : Auteur
- PersonId : 737030
- IdHAL : mcuntzinrae
- ORCID : 0000-0002-5966-1829
- IdRef : 189761067
Silvano Fares
- Fonction : Auteur
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- ORCID : 0000-0002-1990-0928
Giacomo Gerosa
- Fonction : Auteur
- PersonId : 786069
- ORCID : 0000-0002-5352-3222
Thomas Grünwald
- Fonction : Auteur
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- ORCID : 0000-0003-2263-0073
Niklas Hase
- Fonction : Auteur
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- ORCID : 0000-0002-3342-9239
Michal Heliasz
- Fonction : Auteur
- PersonId : 802568
- ORCID : 0000-0003-2635-9604
Andreas Ibrom
- Fonction : Auteur
- PersonId : 774818
- ORCID : 0000-0002-1341-921X
Alexander Knohl
- Fonction : Auteur
- PersonId : 770175
- ORCID : 0000-0002-7615-8870
Bart Kruijt
- Fonction : Auteur
- PersonId : 774815
- ORCID : 0000-0002-6186-1731
Holger Lange
- Fonction : Auteur
- PersonId : 796957
- ORCID : 0000-0001-7099-8740
Leena Leppänen
- Fonction : Auteur
- PersonId : 814757
- ORCID : 0000-0003-1605-8306
Francisco Ramon Lopez Serrano
- Fonction : Auteur
- PersonId : 807978
- ORCID : 0000-0002-3351-9023
Denis Loustau
- Fonction : Auteur
- PersonId : 747851
- IdHAL : denis-loustau
- ORCID : 0000-0003-3990-400X
Petr Lukeš
- Fonction : Auteur
Riccardo Marzuoli
- Fonction : Auteur
- PersonId : 793644
- ORCID : 0000-0001-5946-9530
Meelis Mölder
- Fonction : Auteur
- PersonId : 774821
- ORCID : 0000-0001-6767-3195
Leonardo Montagnani
- Fonction : Auteur
- PersonId : 770089
- ORCID : 0000-0003-2957-9071
Matthias Peichl
- Fonction : Auteur
- PersonId : 786278
- ORCID : 0000-0002-9940-5846
Corinna Rebmann
- Fonction : Auteur
- PersonId : 772710
- ORCID : 0000-0002-8665-0375
Marius Schmidt
- Fonction : Auteur
- PersonId : 801058
- ORCID : 0000-0001-5292-7092
Guillaume Simioni
- Fonction : Auteur
- PersonId : 1193254
- IdHAL : guillaume-simioni
Kamel Soudani
- Fonction : Auteur
- PersonId : 760777
- ORCID : 0000-0002-3468-5648
Résumé
Information about forest background reflectance is needed for accurate biophysical parameter retrieval from forest canopies (overstory) with remote sensing. Separating under- and overstory signals would enable more accurate modeling of forest carbon and energy fluxes. We retrieved values of the normalized difference vegetation index (NDVI) of the forest understory with the multi-angular Moderate Resolution Imaging Spectroradiometer (MODIS) bidirectional reflectance distribution function (BRDF)/albedo data (gridded 500 m daily Collection 6 product), using a method originally developed for boreal forests. The forest floor background reflectance estimates from the MODIS data were compared with in situ understory reflectance measurements carried out at an extensive set of forest ecosystem experimental sites across Europe. The reflectance estimates from MODIS data were, hence, tested across diverse forest conditions and phenological phases during the growing season to examine their applicability for ecosystems other than boreal forests. Here we report that the method can deliver good retrievals, especially over different forest types with open canopies (low foliage cover). The performance of the method was found to be limited over forests with closed canopies (high foliage cover), where the signal from understory becomes too attenuated. The spatial heterogeneity of individual field sites and the limitations and documented quality of the MODIS BRDF product are shown to be important for the correct assessment and validation of the retrievals obtained with remote sensing.
Domaines
Ecosystèmes
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