Results 31 to 40 of about 1,783 (172)

Comparison of Absorbed and Intercepted Fractions of PAR for Individual Trees Based on Radiative Transfer Model Simulations

Remote Sensing, 2021
The fraction of absorbed photosynthetically active radiation (fAPAR) is a key parameter for estimating the gross primary production (GPP) of trees. For continuous, dense forest canopies, fAPAR, is often equated with the intercepted fraction, fIPAR.
Wojciech Wojnowski, Shanshan Wei, Wenjuan Li, Tiangang Yin, Xian-Xiang Li, Genevieve Lai Fern Ow, Mohamed Lokman Mohd Yusof, Andrew J. Whittle   +7 more
doaj   +1 more source

OEMC Hackathon 2023: Global FAPAR Modeling Dataset

, 2023
Dataset organized by the Open-Earth-Monitor (OEMC) project within the context of Hackathon 2023. The dataset contains monthly mean FAPAR values aggregated by each ground station.
Hackländer, Julia, Hengl, Tomislav, Parente, Leandro   +2 more
core   +1 more source

La formación de la cultura jurídica brasilera en la segunda mitad del siglo XIX

Precedente, 2010
Este estudio tiene por objeto identificar la existencia de una efectiva cultura jurídica brasilera en la segunda mitad del siglo XIX; nos preguntamos cuáles fueron las efectivas contribuciones para la formación de esta cultura jurídica en nuestro país ...
Breezy Vizeu
doaj   +1 more source

Cross-ECV consistency at global scale: LAI and FAPAR changes.

Remote Sens Environ, 2021
A framework is proposed for assessing the physical consistency between two terrestrial Essential Climate Variables (ECVs) products retrieved from Earth Observation at global scale. The methodology assessed the level of agreement between the temporal variations of Leaf Area Index (LAI) and Fraction of Absorbed Photosynthetically Active Radiation (FAPAR).
Mota B, Gobron N, Morgan O, Cappucci F, Lanconelli C, Robustelli M.   +5 more
europepmc   +3 more sources

Variations of Foliage Chlorophyll fAPAR and Foliage Non-Chlorophyll fAPAR (fAPAR$_{\rm chl}$, fAPAR$_{\rm non\mathchar "702D chl}$) at the Harvard Forest

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2013
In the last three decades, substantial advancements have been made in understanding the global carbon cycle. Some of these advancements involve using the fraction of absorbed photosynthetically active radiation (fAPAR) by an entire canopy (fAPARcanopy) and/or the Normalized Difference Vegetation Index (NDVI) in modeling studies.
Qingyuan Zhang, Elizabeth M. Middleton, Yen-Ben Cheng, David R. Landis   +3 more
openaire   +1 more source

A RELAÇÃO ENTRE DIREITO E MORAL: uma análise a partir do princípio da moralidade

Revista Eletrônica Direito e Política, 2008
O presente trabalho tem como objeto central a tratativa da relação entre direito e moral. Dessa forma, desde o início dos tempos esses dois institutos se entrelaçam e se separam de forma abrupta (dependendo do contexto).
Carolina de Freitas Paladino
doaj   +1 more source

Ensemble Machine Learning Prediction of Potential FAPAR: Monthly time-series 2021 and Long-Term Comparison with Actual FAPAR

, 2023
General Description The dataset contains composites at 250 m spatial resolution of (1) monthly potential FAPAR for the year 2021 from ensemble ML model predictions, (2) the model deviance for each prediction, (3) the yearly average of potential FAPAR, (4) the yearly average of actual FAPAR and (5) the yearly average of the difference between actual and
Julia Hackländer;, Leandro Parente, Davide Consoli, Tomislav Hengl   +3 more
openaire   +5 more sources

Retrieval of Leaf Area Index (LAI) and Fraction of Absorbed Photosynthetically Active Radiation (FAPAR) from VIIRS Time-Series Data

Remote Sensing, 2016
Long-term high-quality global leaf area index (LAI) and fraction of absorbed photosynthetically active radiation (FAPAR) products are urgently needed for the study of global change, climate modeling, and many other problems.
Zhiqiang Xiao, Shunlin Liang, Tongtong Wang, Bo Jiang   +3 more
doaj   +1 more source

Mapping the density of giant trees in the Amazon. [PDF]

New Phytol
Summary Tall trees (height ≥ 60 m) are keystone elements of tropical forests, strongly influencing biodiversity, carbon storage, and ecosystem resilience. Yet, their density and spatial distribution remain poorly quantified, especially in remote Amazonian regions, limiting our understanding of their ecological roles and contribution to forest–climate ...
de Lima RB, da Silva DAS, Nunes MH, Bittencourt PRL, Groenendyk P, de Oliveira CP, Granato-Souza D, Caraciolo Ferreira RL, Aleixo da Silva JA, Aguirre-Gutiérrez J, Jackson T, de Matos Filho JR, Aparício PDS, da Silva JPG, de Toledo JJ, Guedes MC, de Almeida DRA, Higuchi N, Wagner FH, Ometto JP, Görgens EB.   +20 more
europepmc   +2 more sources

Evaluating the Performance of Sentinel-3A OLCI Land Products for Gross Primary Productivity Estimation Using AmeriFlux Data

Remote Sensing, 2020
Accurate and reliable estimation of gross primary productivity (GPP) is of great significance in monitoring global carbon cycles. The fraction of absorbed photosynthetically active radiation (FAPAR) and vegetation index products of the Moderate ...
Zhijiang Zhang, Lin Zhao, Aiwen Lin
doaj   +1 more source