Results 31 to 40 of about 493 (122)

Inter–Annual Variability of Model Parameters Improves Simulation of Annual Gross Primary Production

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 6, June 2026.
Abstract Parametric uncertainty can hinder land surface models (LSM) from accurately simulating carbon fluxes, such as gross primary production (GPP). These models generally cannot capture inter–annual variability (IAV) of fluxes well due to missing processes, and temporally varying parameters can partially alleviate this limitation.
Ranit De, Alexander Brenning, Markus Reichstein, Ladislav Šigut, Borja Ruiz Reverter, Mika Korkiakoski, Eugénie Paul‐Limoges, Peter D. Blanken, T. Andrew Black, Bert Gielen, Torbern Tagesson, Georg Wohlfahrt, Leonardo Montagnani, Sebastian Wolf, Jiquan Chen, Michael Liddell, Ankur R. Desai, Sujan Koirala, Nuno Carvalhais   +18 more
wiley   +1 more source

High spatiotemporal resolution vegetation FAPAR estimation from Sentinel-2 based on the spectral invariant theory

Science of Remote Sensing
The fraction of absorbed photosynthetically active radiation (FAPAR) is a key input parameter that drives photosynthesis in terrestrial ecosystem models.
Yunzhu Tao, Naijie Peng, Wenjie Fan, Xihan Mu, Husi Letu, Run Ma, Siqi Yang, Qunchao He, Dechao Zhai, Huangzhong Ren   +9 more
doaj   +1 more source

GEOV2: Improved smoothed and gap filled time series of LAI, FAPAR and FCover 1 km Copernicus Global Land products

International Journal of Applied Earth Observations and Geoinformation, 2023
Essential vegetation variables including leaf area index (LAI), fraction of absorbed photosynthetic active radiation (FAPAR) and fraction of green vegetation cover (FCover) are produced and distributed in the Copernicus Global Land Service.
Aleixandre Verger, Jorge Sánchez-Zapero, Marie Weiss, Adrià Descals, Fernando Camacho, Roselyne Lacaze, Frédéric Baret   +6 more
doaj   +1 more source

Fluorescence Quantum Efficiency Data for Europe 2018–2025

Geoscience Data Journal, Volume 13, Issue 2, April 2026.
We present a new dataset of fluorescence quantum efficiency (ΦF) across Europe and northern Africa (2018–2025). Derived from TROPOMI SIF and MODIS PAR at 0.05° resolution, the dataset provides daily, decadal and monthly coverage. The dataset includes input bands and quality layers, enabling applications in vegetation stress monitoring and drought ...
David Herrera, Uwe Rascher, Zbyněk Malenovský, Bastian Siegmann   +3 more
wiley   +1 more source

The Future of Forest Microclimate in Southeast Asia

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Forest microclimates regulate biodiversity, ecosystem functioning, and species' thermal tolerance, yet tropical forest disturbances (logging, fire and fragmentation) increasingly disrupt these conditions. Southeast Asia, home to 15% of the world's tropical forests, faces rapid deforestation and degradation, but large‐scale changes in maximum ...
Erone Ghizoni Santos, Ali Ismaeel, Heveakore Maraia, Jan Altman, Jiří Doležal, Kateřina Sam, Martin Kopecký, Martin Svátek, Radim Matula, Roman Plichta, Ronald C. Estoque, Eduardo Eiji Maeda   +11 more
wiley   +1 more source

Validation of Global Moderate-Resolution FAPAR Products over Boreal Forests in North America Using Harmonized Landsat and Sentinel-2 Data

Remote Sensing
The fraction of absorbed photosynthetically active radiation (FAPAR) stands as a pivotal parameter within the Earth system, quantifying the energy exchange between vegetation and solar radiation.
Yinghui Zhang, Hongliang Fang, Zhongwen Hu, Yao Wang, Sijia Li, Guofeng Wu   +5 more
doaj   +1 more source

Harmonizing Terrestrial Carbon Cycle Observations Over CONUS NEON Sites: Assessing the Information Contributions of Multiple Data Constraints

Global Change Biology, Volume 32, Issue 2, February 2026.
The Workflow of the State Data Assimilation (SDA). ABSTRACT Accurate inventories of terrestrial carbon pools and fluxes are crucial for understanding ecosystem processes, tracking climate change impacts, and meeting the monitoring, reporting, and verification (MRV) requirements in international treaties and voluntary carbon markets.
Dongchen Zhang, Qianyu Li, Alexis Helgeson, Shawn P. Serbin, Michael Dietze   +4 more
wiley   +1 more source

Estimating FAPAR of Rice Growth Period Using Radiation Transfer Model Coupled with the WOFOST Model for Analyzing Heavy Metal Stress

Remote Sensing, 2017
Timely assessment of crop growth conditions under heavy metal pollution is of great significance for agricultural decision-making and estimation of crop productivity.
Gaoxiang Zhou, Xiangnan Liu, Shuang Zhao, Ming Liu, Ling Wu   +4 more
doaj   +1 more source

Intra‐annual variation of fecal nitrogen of red deer in Mediterranean habitats and its relationship with NDVI and bioclimatic indices

The Journal of Wildlife Management, Volume 90, Issue 1, January 2026.
This study on red deer in a fenced Mediterranean estate found strong intra‐annual variation in fecal nitrogen, reflecting seasonal diet quality changes. Fecal nitrogen was associated with normalized difference vegetation index (NDVI) from herbaceous vegetation but not with bioclimatic indices (real bioclimatic intensity [RBI], standardized ...
Eva de la Peña, Jesús Fernández‐Habas, Rafael Villafuerte‐Jordán, José M. García del Barrio, Juan Carranza, María Martínez‐Jauregui   +5 more
wiley   +1 more source

Characterisation of Functional-Trait Dynamics at High Spatial Resolution in a Mediterranean Forest from Sentinel-2 and Ground-Truth Data

Remote Sensing, 2018
The characterisation of functional-trait dynamics of vegetation from remotely sensed data complements the structural characterisation of ecosystems. In this study we characterised for the first time the spatial heterogeneity of the intra-annual dynamics ...
Santiago Schauman, Aleixandre Verger, Iolanda Filella, Josep Peñuelas   +3 more
doaj   +1 more source