11 to 20 of 47 Results
Nov 27, 2023
Regina Eckert, 2023, "Spatially Constrained Atmosphere and Surface Retrieval for Imag- ing Spectroscopy", https://doi.org/10.48577/jpl.MLBSDT, Remote Sensing of Environment, JPL Open Repository
Imaging spectrometers provide important Earth surface data for terrestrial and aquatic ecology, hydrology, geology through retrieved surface reflectance spectra. Surface reflectance is generally recovered from measured radiance through model inversions of the surface and atmosphe... |
Oct 26, 2023
David Thompson, 2023, "Modeling dust mineralogical composition: sensitivity to soil mineralogy atlases and their expected climate impacts", https://doi.org/10.48577/jpl.IEJKBS, Atmospheric Chemistry and Physics, JPL Open Repository
Soil dust aerosols are a key component of the climate system, as they interact with short- and long-wave radiation, alter cloud formation processes, affect atmospheric chemistry and play a role in biogeochemical cycles by providing nutrient inputs such as iron and phosphorus. The... |
Sep 5, 2023
Regina Eckert, 2023, "Spatially Constrained Retrieval for Imaging Spectroscopy", https://doi.org/10.48577/jpl.89N1FR, Remote Sensing of Environment, JPL Open Repository
Imaging spectrometers provide important Earth surface data for terrestrial and aquatic ecology, hydrology, geology through retrieved surface reflectance spectra. Surface reflectance must be recovered from measured radiance through model inversions of the surface and atmospheric s... |
Jul 25, 2023
Andrew Thorpe, 2023, "Attribution of individual methane and carbon dioxide emission sources using 5 EMIT observations from space", https://doi.org/10.48577/jpl.7FJAGQ, Science Advances, JPL Open Repository
Carbon dioxide and methane emissions are the two primary anthropogenic climate-forcing agents and an important source of uncertainty in the global carbon budget. Uncertainties are further magnified when emissions occur at fine spatial scales (<1 km), making attribution challengin... |
Jun 1, 2023
David Thompson, 2023, "Estimation and Validation of Sub-Pixel Needleleaf Cover Fraction in the Boreal Forest of Alaska to Aid Fire Management", https://doi.org/10.48577/jpl.BPURCS, Remote Sensing, JPL Open Repository
Abstract: Wildfires are a natural part of the boreal ecosystem in Alaska. However, in recent years, Alaska is experiencing frequent and large fires. Environmental conditions (high tempera-ture, low precipitation, and high lightning events) are becoming favorable for severe fire e... |
Feb 7, 2023
Nimrod Carmon, 2023, "Shape from Spectra", https://doi.org/10.48577/jpl.HP66U7, Remote Sensing of Environment, JPL Open Repository
We introduce a new unified atmospheric-topographic correction approach that estimates surface geometry directly from the radiance measurement. Surface topography influences the at-sensor radiance measurement, making precise topography modeling critical in applications like vegeta... |
Nov 16, 2022
Miller, Charles E, 2022, "Error and Uncertainty Degrade Topographic Corrections of Remotely Sensed Data", https://doi.org/10.48577/jpl.XUIKKK, Journal of Geophysical Research: Biogeosciences, JPL Open Repository
Chemical and biological composition of surface materials and physical structure and arrangementof those materials determine the intrinsic reflectance of Earth's land surface. The apparent reflectance—asmeasured by a spaceborne or airborne sensor that has been corrected for atmosp... |
Dec 6, 2021
Baskaran, Latha, 2021, "Geomorphological Patterns of Remotely Sensed Methane Hot Spots in the Mackenzie Delta, Canada", https://doi.org/10.48577/jpl.GXDYP9, Environmental Research Letters, JPL Open Repository
We studied geomorphological controls on methane (CH4) hotspots in the Mackenzie Delta region in northern Canada using airborne imaging spectroscopy collected as part of the Arctic Boreal Vulnerability Experiment (ABoVE). Methane emissions hotspots were retrieved at ~25 m2 spatial... |
Nov 22, 2021
Elder, Clayton D, 2021, "Characterizing methane emission hotspots from thawing permafrost", https://doi.org/10.48577/jpl.ECH7DM, AGU Advances, JPL Open Repository
Methane (CH4) emissions from climate-sensitive ecosystems within the northern permafrost region represent a potentially large but highly uncertain source, with current estimates spanning a factor of seven (11 – 75 Tg CH4 yr-1). Accelerating permafrost thaw threatens significant i... |
Jul 23, 2021
Richardson, Mark T, 2021, "Boundary layer water vapour statistics from high spatial resolution spaceborne visible spectrometry", https://doi.org/10.48577/jpl.RRJHES, Atmospheric Measurement Techniques, JPL Open Repository
Daytime clear-sky total column water vapour (TCWV) is commonly retrieved from visible and shortwave infrared reflectance (VSWIR) measurements, and upcoming missions such as the Earth Surface Mineral Dust Source Investigation (EMIT) will offer unprecedented horizontal resolution o... |
