Results 71 to 80 of about 732,743 (205)

Unlocking ecological insights from sub‐seasonal visible‐to‐shortwave infrared imaging spectroscopy: The SHIFT campaign

open access: yesEcosphere, Volume 16, Issue 3, March 2025.
Abstract We stand at the threshold of a transformative era in Earth observation, marked by space‐borne visible‐to‐shortwave infrared (VSWIR) imaging spectrometers that promise consistent global observations of ecosystem function, phenology, and inter‐ and intra‐annual change.
K. Dana Chadwick   +112 more
wiley   +1 more source

Inferring Species Diversity and Variability over Climatic Gradient with Spectral Diversity Metrics

open access: yesRemote Sensing, 2020
Filling in the void between forest ecology and remote sensing through monitoring biodiversity variables is of great interest. In this study, we utilized imaging spectroscopy data from the ISRO–NASA Airborne Visible InfraRed Imaging Spectrometer—Next ...
Amrita N. Chaurasia   +6 more
doaj   +1 more source

Towards CO2 emission monitoring with passive air- and space-borne sensors [PDF]

open access: yes, 2021
Coal-fueled power plants are responsible for 30 % of anthropogenic carbon dioxide (CO2) emissions and can therefore be considered important drivers of climate warming.
Wilzewski, Jonas S.
core   +1 more source

Uncertainty Analysis for Input Parameters of the Atmospheric Compensation Process in Airborne Imaging Spectroscopy. [PDF]

open access: yes, 2019
In airborne imaging spectroscopy for the Visible Shortwave Infrared (VSWIR) wavelength range the state of the atmosphere can have a large influence on the values detected by optical sensors like APEX or AVIRIS NG.
Gut, Tina
core   +1 more source

Decoding the Spatiotemporal Complexities of the Permafrost Carbon Feedback With Multimodal Ensemble Learning

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 1, March 2025.
Abstract Complex nonlinear relationships exist between the permafrost thermal state, active layer thickness, and terrestrial carbon cycle dynamics. In Arctic and boreal Alaska, significant uncertainties characterize the spatiotemporal rate and magnitude of permafrost degradation and the permafrost carbon feedback, with increasing recognition of the ...
B. A. Gay   +5 more
wiley   +1 more source

Deciphering the spectra of flowers to map landscape‐scale blooming dynamics

open access: yesEcosphere, Volume 16, Issue 2, February 2025.
Abstract Like leaves, floral coloration is driven by inherent optical properties, which are determined by pigments, scattering structure, and thickness. However, establishing the relative contribution of these factors to canopy spectral signals is usually limited to in situ observations.
Yoseline Angel   +7 more
wiley   +1 more source

Scaling Arctic Landscape and Permafrost Features Improves Active Layer Depth Modeling [PDF]

open access: yes
Tundra ecosystems in the Arctic store up to 40% of global below-ground organic carbon but are exposed to the fastest climate warming on Earth. However, accurately monitoring landscape changes in the Arctic is challenging due to the complex interactions ...
Fisher, Joshua B.   +4 more
core   +2 more sources

Comparing airborne algorithms for greenhouse gas flux measurements over the Alberta oil sands [PDF]

open access: yes, 2022
To combat global warming, Canada has committed to reducing greenhouse gases to be (GHGs) 40 %–45 % below 2005 emission levels by 2025. Monitoring emissions and deriving accurate inventories are essential to reaching these goals.
Adams, Cristen   +10 more
core   +1 more source

Comparing Point Source CO2 Emission Rate Estimates From Near‐Simultaneous OCO‐3 and EMIT Observations

open access: yesGeophysical Research Letters, Volume 51, Issue 23, 16 December 2024.
Abstract Carbon dioxide (CO2 ${\mathrm{C}\mathrm{O}}_{2}$) emissions from combustion sources are uncertain in many places across the globe. Here, we estimate CO2 ${\mathrm{C}\mathrm{O}}_{2}$ emission rates from a small number of collocated observations from the Orbiting Carbon Observatory‐3 (OCO‐3) and the Earth Surface Mineral Dust Source ...
R. R. Nelson   +6 more
wiley   +1 more source

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