Results 91 to 100 of about 313 (123)
Some of the next articles are maybe not open access.
The spatial scaling effect of canopy FAPAR retrieved by remote sensing
2014 IEEE Geoscience and Remote Sensing Symposium, 2014Climate and land-atmosphere models rely on accurate land-surface parameters, such as the Fraction of Absorbed Photo synthetically Active Radiation (FAPAR). It is known that FAPAR values retrieved from remote sensing images suffer from scaling effects. Scaling transformation aims to derive accurate FAPAR values at a specific scale from values at other ...
Lu Wang +3 more
openaire +1 more source
FAPAR and BRDF simulation for row crop using Monte Carlo method
2014 IEEE Geoscience and Remote Sensing Symposium, 2014Row crop is an important cultivation form in China. It is considered to be a transitional canopy structure between continuous vegetation and discrete vegetation. Lots of physical models of row crop were established to invert vegetation parameters of row crop. Monte Carlo model is a reliable reference for those physical models.
Beitong Zhang +3 more
openaire +1 more source
Estimation of LAI, fAPAR and fCover of Sahel rangelands (Gourma, Mali)
Agricultural and Forest Meteorology, 2014Abstract Leaf area index, LAI , fraction of absorbed photosynthetic active radiation, fAPAR , and vegetation cover fraction, fCover , drive the main vegetation canopy processes and are key variables in ecosystem, climate, hydrology and biogeochemistry models. The present study aims to evaluate the joint use of hemispherical photographs and the CAN-
E. Mougin +5 more
openaire +1 more source
On the bias of instantaneous FAPAR estimates in open-canopy forests
Agricultural and Forest Meteorology, 2010Abstract Global products of the fraction of absorbed photosynthetically active radiation (FAPAR) are operationally available from a variety of space agencies. A proper validation of these products is essential and hinges on the acquisition of accurate ground-based FAPAR estimates of the vegetation contained within the field of view of the space ...
openaire +1 more source
Monitoring FAPAR over land surfaces with remote sensing data
SPIE Proceedings, 2004Temporal changes of terrestrial vegetation have traditionally been monitored using empirical remote sensing tools, which are sensitive to perturbations as well as to the spectral properties of the sensor. Advances in the understanding of radiation transfer theory, and the availability of higher performance modern instruments, have led to the ...
Nadine Gobron +5 more
openaire +1 more source
An Improved FAPAR-P Model for Cloudy Conditions
IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium, 2023Yunzhu Tao +6 more
openaire +1 more source
Retrieving of LAI and fAPAR with airborne POLDER data over various biomes
IGARSS'97. 1997 IEEE International Geoscience and Remote Sensing Symposium Proceedings. Remote Sensing - A Scientific Vision for Sustainable Development, 2002The objectives of the paper is to study a method of retrieval of LAI and fAPAR parameters based on the inversion of a BRDF model against remote sensing data from forthcoming wide field of view optical satellite sensors such as POLDER/ADEOS, VGT/SPOT4, MODIS/EOS, MISR/EOS. The model used is that of Kuusk (1994).
P. Bicheron, M. Leroy, O. Hautecoeur
openaire +1 more source
Remote sensing of seasonal variation of LAI and fAPAR in a deciduous broadleaf forest
Agricultural and Forest Meteorology, 2022Leticia X. Lee +4 more
openaire +2 more sources
Estimation of daily FAPAR from MODIS instantaneous observations at forest sites
Agricultural and Forest Meteorology, 2023Yinghui Zhang +2 more
exaly