Results 141 to 150 of about 10,855 (288)

Satellite‐Based Assessment of Methane Emissions From the Darvaza Gas Crater

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Methane is a potent greenhouse gas, and the Darvaza crater in Turkmenistan is a rare, persistent emitter. There are uncertainties regarding its formation date (either 1963 or 1971), fire ignition, and the fire's influence on methane release. Using historical Landsat imagery, we reconstruct the fire history, identifying that combustion began ...
Adriana Valverde, Itziar Irakulis‐Loitxate, Javier Gorroño, Zhipeng Pei, Javier Roger, Luis Guanter   +5 more
wiley   +1 more source

Evaluation of FY-4B Surface Shortwave Radiation Products over China: Performance Improvement Induced by the Orbital Drift from 133°E to 105°E

Remote Sensing
The orbital drift of the Fengyun-4B (FY-4B) satellite from 133°E to 105°E in early 2024 significantly altered its viewing geometry over China, providing a unique opportunity to evaluate the impact of satellite positioning on the accuracy of downward ...
Ming Wang, Wanchun Zhang, Yang Cui, Bo Li   +3 more
doaj   +1 more source

Current and Future Changes in Earth's Outgoing Infrared Spectrum

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Hyperspectral infrared satellite observations provide an information‐rich, global record of climate mean state and change without the structural uncertainties often present satellite retrievals and reanalyses. Current and planned hyperspectral satellite missions will continuously observe changes in Earth's outgoing infrared spectrum into the ...
J. K. Shaw, J. E. Kay, S. DeSouza‐Machado, D. D. Turner, L. L. Strow   +4 more
wiley   +1 more source

Radiometric Calibration and Uncertainty Analysis of KOMPSAT-3A Using the Reflectance-Based Method. [PDF]

Sensors (Basel), 2020
Jin C, Ahn H, Seo D, Choi C.
europepmc   +1 more source

Satellite Remote Sensing of Alpine Vegetation Dynamics: Challenges and Perspectives. [PDF]

Glob Chang Biol
Satellite greening has become a key tool for monitoring alpine vegetation change, but a positive vegetation‐index trend is not an ecological observation in itself. This perspective shows that interpreting alpine greening requires addressing two sequential challenges: methodological complexity, which can bias trends during image processing, and ...
Bayle A.
europepmc   +2 more sources

Training‐Domain Gaps in Data‐Driven Ocean Color Algorithms

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Bio‐optical algorithms serve a critical role, enabling satellite‐based monitoring of the global ocean and its ecosystems. These largely empirical algorithms invert satellite measurements of water leaving reflectance (“ocean color”) to biogeochemical parameters such as chlorophyll a, but often fail to generalize beyond their training data ...
P. C. Gray, C. Begouen Demeaux, A. Chase, R. Frouin, E. S. Boss   +4 more
wiley   +1 more source

Vicarious Radiometric Calibration of Ocean Color Bands for FY-3D/MERSI-II at Lake Qinghai, China. [PDF]

Sensors (Basel), 2020
Chen S, Zheng X, Li X, Wei W, Du S, Guo F.   +5 more
europepmc   +1 more source

Spatial relationship of turfgrass tissue nitrogen content and several vegetation indices on sand‐capped golf course fairways

Agrosystems, Geosciences &Environment, Volume 9, Issue 2, June 2026.
Abstract Vegetation indices (VIs), such as normalized difference vegetation index (NDVI), are widely used to assess nitrogen (N) status in crop systems and are gaining interest in turfgrass management. However, most studies have been conducted in controlled settings, and their relevance under real‐world golf course conditions remains unclear.
Madan Sapkota, Opeyemi E. Alabi, Weston W. Floyd, Sarah G. Hong, Dallas M. Williams, Briana M. Wyatt, A. Peyton Smith, Chase M. Straw   +7 more
wiley   +1 more source

Application of Thermal Dynamic and Precipitation Parameters from FengYun Satellites in Tropical Cyclone Monitoring and Warning

Tropical Cyclone Research and Review
After more than 50 years of development, FengYun (FY) meteorological satellite has formed a polar orbit and geostationary orbit (GEO) meteorological satellite observation system, with the ability to operate four low earth orbit (LEO) meteorological ...
Suling Ren, Dongyan Mao, Di Xian, Xiang Fang, Bingyun Yang, Zhiqiang Cao, Yawen Ai, Chang Liu, Chunyi Xiang, Qifeng Qian, Xinyan Lü, Jian Shang   +11 more
doaj   +1 more source

Characterisation of the apparent reflectance of a concrete calibration surface over different time scales

This paper describes results from a detailed field spectral measurement campaign, designed to assess the temporal stability of calibration surface reflectance factors.
Anderson, Karen, Milton, E.J.
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