0000000000161827

AUTHOR

Holger Lange

0000-0001-7099-8740

showing 5 related works from this author

Data synergy between leaf area index and clumping index Earth Observation products using photon recollision probability theory

2018

International audience; Clumping index (CI) is a measure of foliage aggregation relative to a random distribution of leaves in space. The CI can help with estimating fractions of sunlit and shaded leaves for a given leaf area index (LAI) value. Both the CI and LAI can be obtained from global Earth Observation data from sensors such as the Moderate Resolution Imaging Spectrometer (MODIS). Here, the synergy between a MODIS-based CI and a MODIS LAI product is examined using the theory of spectral invariants, also referred to as photon recollision probability ('p-theory'), along with raw LAI-2000/2200 Plant Canopy Analyzer data from 75 sites distributed across a range of plant functional types.…

0106 biological sciencesCanopyEarth observationPhoton010504 meteorology & atmospheric sciencesF40 - Écologie végétalehttp://aims.fao.org/aos/agrovoc/c_1920Soil Science01 natural sciencesMeasure (mathematics)http://aims.fao.org/aos/agrovoc/c_7701Multi-angle remote sensingProbability theoryhttp://aims.fao.org/aos/agrovoc/c_718Foliage clumping indexRange (statistics)http://aims.fao.org/aos/agrovoc/c_3081[SDV.BV]Life Sciences [q-bio]/Vegetal BiologyComputers in Earth SciencesLeaf area indexhttp://aims.fao.org/aos/agrovoc/c_4039http://aims.fao.org/aos/agrovoc/c_4116Photon recollision probabilityhttp://aims.fao.org/aos/agrovoc/c_10672http://aims.fao.org/aos/agrovoc/c_32450105 earth and related environmental sciencesMathematicsRemote sensinghttp://aims.fao.org/aos/agrovoc/c_8114GeologyVegetationhttp://aims.fao.org/aos/agrovoc/c_5234http://aims.fao.org/aos/agrovoc/c_7558Leaf area indexhttp://aims.fao.org/aos/agrovoc/c_7273http://aims.fao.org/aos/agrovoc/c_1236http://aims.fao.org/aos/agrovoc/c_1556U30 - Méthodes de recherchehttp://aims.fao.org/aos/agrovoc/c_4026010606 plant biology & botanyhttp://aims.fao.org/aos/agrovoc/c_6124
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Abstracts of the 6th FECS Conference 1998 Lectures.

1998

International audience

[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere010504 meteorology & atmospheric sciencesHealth Toxicology and MutagenesisMEDLINE[CHIM.CATA]Chemical Sciences/CatalysisGeneral Medicine010501 environmental sciences01 natural sciencesPollutionEngineering physics[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Environmental ChemistryEnvironmental scienceEngineering ethics[PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]ComputingMilieux_MISCELLANEOUS0105 earth and related environmental sciencesEnvironmental science and pollution research international
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Twenty-three unsolved problems in hydrology (UPH) – a community perspective

2019

Publisher's version (útgefin grein)

hydrology science questions research agenda interdisciplinary knowledge gaps0208 environmental biotechnologyUT-Hybrid-DWASShydrology02 engineering and technologyOceanografi hydrologi och vattenresurserHydrology and Quantitative Water ManagementOceanography Hydrology and Water ResourcesQEÞekking910 Geography & travelVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Hydrologi: 454ComputingMilieux_MISCELLANEOUSmedia_commonWater Science and Technologyknowledge gap[SHS.SOCIO]Humanities and Social Sciences/SociologyVDP::Landbruks- og Fiskerifag: 900Hydroglogy6. Clean waterJustice and Strong InstitutionsTASpitescience questionsDisciplineHydrologie en Kwantitatief Waterbeheerhydrology;science questions;research agenda;knowledge gaps;interdisciplinarySDG 16 - PeaceProcess (engineering)media_common.quotation_subjectHidrologiaVatnafræðiresearch agendaContext (language use)Digital mediaknowledge gapsITC-HYBRID[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrologyhydrology; science questions; research agenda; interdisciplinary; knowledge gapsHydrologyWIMEKhydrology; interdisciplinary; knowledge gaps; research agenda; science questionsbusiness.industrySDG 16 - Peace Justice and Strong InstitutionsPublic consultationRannsóknir500 ScienceBodemfysica en Landbeheer/dk/atira/pure/sustainabledevelopmentgoals/peace_justice_and_strong_institutions[SDE.ES]Environmental Sciences/Environmental and SocietyWater Resources Management020801 environmental engineeringSoil Physics and Land ManagementSocio-hydrologyITC-ISI-JOURNAL-ARTICLEinterdisciplinaryAðferðafræðibusinessDiversity (politics)
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Twenty-three unsolved problems in hydrology (UPH) – a community perspective

2019

This paper is the outcome of a community initiative to identify major unsolved scientific problems in hydrology motivated by a need for stronger harmonisation of research efforts. The procedure involved a public consultation through online media, followed by two workshops through which a large number of potential science questions were collated, prioritised, and synthesised. In spite of the diversity of the participants (230 scientists in total), the process revealed much about community priorities and the state of our science: a preference for continuity in research questions rather than radical departures or redirections from past and current work. Questions remain focused on the process-…

13. Climate action6. Clean water
researchProduct

Twenty-three unsolved problems in hydrology (UPH) – a community perspective

2019

This paper is the outcome of a community initiative to identify major unsolved scientific problems in hydrology motivated by a need for stronger harmonisation of research efforts. The procedure involved a public consultation through online media, followed by two workshops through which a large number of potential science questions were collated, prioritised, and synthesised. In spite of the diversity of the participants (230 scientists in total), the process revealed much about community priorities and the state of our science: a preference for continuity in research questions rather than radical departures or redirections from past and current work. Questions remain focused on the process-…

13. Climate action6. Clean water
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