Results 141 to 150 of about 53,616 (283)

Spectral Library of Plant Species from Montesinho Natural Park in Portugal

open access: yesData
In this work, we present and describe a spectral library (SL) with 15 vascular plant species from Montesinho Natural Park (MNP), a protected area in Northeast Portugal.
Isabel Pôças   +7 more
doaj   +1 more source

Satellite Data Trace Seasonal Freshwater Dispersion in Hudson and James Bays

open access: yesGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Freshwater dispersal controls stratification, circulation, and biogeochemical processes in Hudson and James Bay (HJB); however, limited field observations hinder understanding of how different freshwater types drive change. This study uses Aqua‐Moderate Resolution Imaging Spectroradiometer and Soil Moisture and Ocean Salinity‐Microwave Imaging
Atreya Basu   +9 more
wiley   +1 more source

Modeling energy flow and nutrient cycling in natural semiarid grassland ecosystems with the aid of thematic mapper data [PDF]

open access: yes
Energy flow and nutrient cycling were modeled as affected by herbivory on selected intensive sites along gradients of precipitation and soils, validating the model output by monitoring selected parameters with data derived from the Thematic Mapper (TM ...
Lewis, James K.
core   +1 more source

Improving Sandstorm Simulations by Parameterizing Form Drag From Subgrid Sand Dunes Using 30‐m‐Resolution Terrain Data

open access: yesGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Surface and near‐surface wind speeds, critical factors for dust emission, are often overestimated in desert regions by models, leading to exaggerated predictions of sandstorm extent and dust concentration. This study implements a new turbulent orographic form drag (TOFD) parameterization scheme using 30‐m‐resolution terrain data in the WRF ...
Huoqing Li   +6 more
wiley   +1 more source

Ultraviolet corona detection sensor study [PDF]

open access: yes
The feasibility of detecting electrical corona discharge phenomena in a space simulation chamber via emission of ultraviolet light was evaluated. A corona simulator, with a hemispherically capped point to plane electrode geometry, was used to generate ...
MATHERN, Schmitt, R. J.
core   +1 more source

Full 3D BSDF spectroradiometer

open access: yes, 2006
To expedite colour and gloss measurements, the CIE and ASTM have recommended some basic geometries regarding illumination and viewing angles. There are, however, many surfaces that cannot be adequately measured using such limited conditions. Any gloss and colour measurement can be related to some particular value of the general spectral Bidirectional ...
Leloup, Frédéric   +4 more
openaire   +1 more source

Impact and Variability of Cloud Types on Earth's Top‐of‐Atmosphere Energy Balance in the Tropics: A 19‐Year Analysis of High‐Resolution CERES Data

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 2, 28 January 2026.
Abstract Cloud radiative effects (CREs) play a critical role in Earth's energy balance and climate variability, yet the variability and specific contributions of distinct cloud types remain poorly understood. Using the Clouds and the Earth's Radiant Energy System FluxByCldTyp data set, this study investigates how temporal variations in total top‐of‐the‐
Kuan‐Man Xu, Moguo Sun
wiley   +1 more source

Variability of Particulate Organic Carbon Stock in the South China Sea With Reference to Profile Structures

open access: yesGeophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract Accurate characterization of particulate organic carbon (POC) stock is essential for understanding regional biological pump processes, yet the roles of vertical structure and integration depth in regulating POC stock variability remain unclear in marginal seas. Using a performance‐evaluated 3D POC data set, we assessed POC stock changes in the
Teng Li   +9 more
wiley   +1 more source

Compact spectroradiometer [PDF]

open access: yes
Development and characteristics of spectroradiometer with wedge filters to eliminate adverse effect of pinholes in ...
Davidson, G. A.   +2 more
core   +1 more source

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