Results 1 to 10 of about 5,255,664 (297)

"Lietuvos chirurgija" Index Copernicus duomenų bazėje

open access: yesLietuvos Chirurgija, 2004
Raimundas Lunevičius Vyriausiasis redaktorius, habilituotas daktaras, Vilniaus universiteto docentas, Vilniaus universitetinės greitosios pagalbos ligoninės chirurgas El paštas:rlunevichus@yahoo.com Praėjo daugiau nei metai, kai buvo atnaujinta žurnalo
Raimundas Lunevičius
doaj   +3 more sources

Integrating Copernicus LMS With Ground Measurements Data for Leaf Area Index and Biomass Assessment for Grasslands in Poland and Norway

open access: yesInternational Journal of Digital Earth
The integration of satellite data from the Copernicus Land Monitoring Service (CLMS) with ground-based measurements represents a pioneering approach to the assessment of leaf area index (LAI) and in situ biomass at grasslands in Poland highlighting the ...
Katarzyna Dąbrowska-Zielińska   +11 more
exaly   +4 more sources

Evaluation of Global Leaf Area Index and Fraction of Absorbed Photosynthetically Active Radiation Products Over North America Using Copernicus Ground Based Observations for Validation Data [PDF]

open access: yesRemote Sensing of Environment, 2020
Abstract With a growing number of Earth observation (EO) products available through operational programmes such as the European Union’s Copernicus, there is increasing emphasis on product accuracy and uncertainty, necessitating evaluation against in situ reference measurements.
Jadunandan Dash   +2 more
exaly   +3 more sources

OPERATIONAL 333m BIOPHYSICAL PRODUCTS OF THE COPERNICUS GLOBAL LAND SERVICE FOR AGRICULTURE MONITORING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
The Copernicus Global Land service provides continuously a set of bio-geophysical variables describing, over the whole globe, the vegetation dynamic, the energy budget at the continental surface and some components of the water cycle.
R. Lacaze   +9 more
doaj   +3 more sources

Evaluating the Influence of Missing Data from the Crop Vegetation Index Time Series on Copernicus HR-VPP Phenological Products

open access: yesEngineering Proceedings
Phenological parameters extracted from time series (TS) of spectral indices are essential to characterizing crops. However, the lack of data in the TS can affect their accuracy.
Alexey Valero-Jorge   +2 more
doaj   +3 more sources

Error Characteristics of Pan-Arctic Digital Elevation Models and Elevation Derivatives in Northern Sweden

open access: yesRemote Sensing, 2021
Many biochemical processes and dynamics are strongly controlled by terrain topography, making digital elevation models (DEM) a fundamental dataset for a range of applications. This study investigates the quality of four pan-Arctic DEMs (Arctic DEM, ASTER
Martin Karlson   +2 more
doaj   +1 more source

Validation of FABDEM, a global bare-earth elevation model, against UAV-lidar derived elevation in a complex forested mountain catchment

open access: yesEnvironmental Research Communications, 2023
Space-based, global-extent digital elevation models (DEMs) are key inputs to many Earth sciences applications. However, many of these applications require the use of a ‘bare-Earth’ DEM versus a digital surface model (DSM), the latter of which may include
Christopher B Marsh   +2 more
doaj   +1 more source

Road Risk-Index Analysis Using Satellite Products

open access: yesSensors, 2023
This paper proposes a service called intelligent routing using satellite products (IRUS) that can be used in order to analyze risks to the road infrastructure during bad weather conditions, such as heavy rainfall, storms, or floods.
Bogdan-Cristian Firuți   +5 more
doaj   +1 more source

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