Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/1977
DC Field | Value | Language |
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dc.contributor.authorall | García-Haro, F. J.; Department of Thermodynamics, University of Valencia, Spain | en |
dc.contributor.authorall | Camacho-de Coca, F.; Department of Thermodynamics, University of Valencia, Spain | en |
dc.contributor.authorall | Meliá, J.; Department of Thermodynamics, University of Valencia, Spain | en |
dc.date.accessioned | 2006-12-07T14:41:20Z | en |
dc.date.available | 2006-12-07T14:41:20Z | en |
dc.date.issued | 2006-02 | en |
dc.identifier.uri | http://hdl.handle.net/2122/1977 | en |
dc.description.abstract | This work is aimed to demonstrate the feasibility of a methodology for retrieving bio-geophysical variables whilst at the same time fully accounting for additional information on directional anisotropy. A model-based approach has been developed to deconvolve the angular reflectance into single landcovers reflectances, attempting to solve the inconsistencies of 1D models and linear mixture approaches. The model combines the geometric optics of large scale canopy structure with principles of radiative transfer for volume scattering within individual crowns. The reliability of the model approach to retrieve LAI has been demonstrated using data from DAISEX- 99 campaign at Barrax, Spain. Airborne data include POLDER and HyMap data in which various field plots were observed under varying viewing/illumination angles. Nearly simultaneously, a comprehensive field data set was acquired on specific crop plots. The inversions provided accurate LAI values, revealing the model potential to combine spectral and directional information to increase the likely accuracy of the retrievals. In addition, the sensitivity of retrievals with the angular and spectral subset of observations was analysed, showing a high consistency between results. This study has contributed to assess the uncertainties with products derived from satellite data like SEVIRI/MSG. | en |
dc.format.extent | 867513 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.relation.ispartofseries | 1/49 (2006) | en |
dc.subject | LAI | en |
dc.subject | inversion | en |
dc.subject | POLDER | en |
dc.subject | HyMap | en |
dc.subject | multi-angular | en |
dc.title | Retrieving leaf area index from multi-angular airborne data | en |
dc.type | article | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.subject.INGV | 04. Solid Earth::04.02. Exploration geophysics::04.02.05. Downhole, radioactivity, remote sensing, and other methods | en |
dc.subject.INGV | 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous | en |
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GONZÁLEZ, J.R. RUIZ, C. MARTÍNEZ, A. PALACIOS and J. MORENO (2001): Vegetation Soil Measurements at Barrax (ESA Publication Division SP-499, ESTEC, The Netherlands), 79-87. GARCÍA-HARO, F.J., F. CAMACHO-DE COCA and J. MELIÁ (2002): Retrieval of biophysical parameters using directional spectral mixture analysis, in Proceedings of the 1st International Symposium on Recent Advances in Quantitative Remote Sensing, 16-20 September 2002, Torrent, Spain (Universitat de Valencia, Valencia), 963-970. GARCÍA-HARO, F.J, S. SOMMER and T. KEMPER (2003): Variable Multiple Endmember Spectral Mixture Analysis (VMESMA), Int. J. Remote Sensing (submitted). HAPKE, B. (1981): Bidirectional reflectance spectroscopy, 1. Theory, J. Geophys. Res., 86, 3039-3054. JASINSKI, M.F. and P.S. EAGLESON (1989): The structure of red-infrared scattergrams of semivegetated landscapes, IEEE Trans. Geosci. Remote Sensing, 27, 441¯451. JASINSKI, M.F. and P.S. 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CIHLAR (1997): Investigation of radiative transfer in boreal forests with an improved 4-scale model and airborne POLDER data, IEEE Trans. Geosci. Remote Sensing, 27, 1396¯1414. LEROY, M., O. HATECOEUR, F. PONCHAUT, L. ALONSO-CHORDA and J. MORENO (2001): The Airborne POLDER Data in the DAISEX’99 Campaign (ESA Publication Division SP-499, ESTEC, The Netherlands), 13-22. LI, X. and R.A. STRAHLER (1992): Geometrical-optical modeling of the discrete-crown vegetation canopy: effect of crown shape and mutual shadowing, IEEE Trans. Geosci. Remote Sensing, GE-30, 276¯292. NILSON, T. (1971): A theoretical analysis of the frequency of gaps in plant stands, Agric. Meteorol., 8, 25-38. QIN, W. and S.A.W. GERSTL (2000): 3D scene modeling of semidesert vegetation cover and its radiation regime, Remote Sensing Environ., 71, 197-206. QIN,W. and N.S. GOEL (1995): An evaluation hotspot models for vegetation canopies, Remote Sensing Rev., 13, 121-159. RAHMAN, H., M.M. VERSTRAETE and B. PINTY (1993): Coupled Surface-Atmosphere Reflectance (CSAR) model, Part 1. Model description and inversion on synthetic Data, J. Geophys. Res., 98, 20,779-20,789. ROSS, J.K. (1981): The Radiation Regime and Architecture of Plants Stands (Dr. W. Junk Publishers, Norwell, MA), pp. 391. ROUJEAN, J.L. (2000): A parametric hot spot model for optical remote sensing application, Remote Sensing Environ., 71, 197-206. ROUJEAN, J.L., M. LEROY, P.Y. DESCHAMPS and A. PODAIRE (1992): Evidence of surface reflectance bidirectional effects form a NOAA/AVHRR multitemporal data set, Int. J. Remote Sensing, 13, 685-698. SCHAFF, C.B., X. LI and R.A. STRAHLER (1994): Topographic effects on bidirectional and hemispherical reflectances calculated with a geometrical-optical canopy model, IEEE Trans. Geosci. Remote Sensing, GE-32, 1186¯1193. VAN-LEEUWEN, W.J.D. and J.L. ROUJEAN (2002): Land surface albedo from the synergistic use of polar (EPS) and geo-stationary (MSG) observing systems. An assessment of physical uncertainties, Remote Sensing Environ., 81, 273-289. WHITE, H.P., J.R. MILLER and J.M. CHEN (2001): Four scale linear model for anisotropic reflectance (FLAIR) for plant canopies, Part I. Model description and partial validation, IEEE Trans. Geosci. Remote Sensing, 39 (5), 1072-1083. | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | García-Haro, F. J. | en |
dc.contributor.author | Camacho-de Coca, F. | en |
dc.contributor.author | Meliá, J. | en |
dc.contributor.department | Department of Thermodynamics, University of Valencia, Spain | en |
dc.contributor.department | Department of Thermodynamics, University of Valencia, Spain | en |
dc.contributor.department | Department of Thermodynamics, University of Valencia, Spain | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Department of Thermodynamics, University of Valencia, Spain | - |
crisitem.author.dept | Department of Thermodynamics, University of Valencia, Spain | - |
crisitem.author.dept | Department of Thermodynamics, University of Valencia, Spain | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 05. General | - |
Appears in Collections: | Annals of Geophysics |
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