Publications
Filter Total Items: 336
Unlocking ecological insights from sub-seasonal visible-to-shortwave infrared imaging spectroscopy: The SHIFT campaign Unlocking ecological insights from sub-seasonal visible-to-shortwave infrared imaging spectroscopy: The SHIFT campaign
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. However, the full value of repeat spectroscopy, the information embedded within different temporal scales, and the...
Authors
K. Chadwick, Frank W. Davis, Kimberley Miner, Ryan Pavlick, Mark Reynolds, Philip Townsend, Philip Brodrick, Christiana Ade, Jean Allen, Leander D. L. Anderegg, Yoseline Angel, Indra Boving, Kristin Byrd, Petya Campbell, Luke Carberry, Katherine Cavanaugh, Kyle Cavanaugh, Kelly Easterday, Regina Eckert, Michelle Gierach, Kaitlin Gold, Erin Hestir, Fred Huemmrich, Maggie Klope, Raymond Kokaly, Piper Lovegreen, Kelly Luis, Conor McMahon, Nicholas Nidzieko, Francisco Ochoa, Anna Ongjoco, Elsa Ordway, Madeleine Pascolini-Campbell, Natalie Queally, Dar Roberts, Clare Saiki, Fabian Schneider, Alexey Shiklomanov, German Silva, Jordan Snyder, Michele Thornton, Anna Trugman, Nidhi Vinod, Ting Zheng, Dulcinea M. Avouris, Brianna Baker, Latha Baskaran, Tom Bell, Megan Berg, Michael Bernas, Niklas Bohn, Renato Braghiere, Zach Breuer, Andrew Brooks, Nolan Burkard, Julia Burmistrova, Kerry-Anne Cawse-Nicholson, John Chapman, Johana Chazaro-Haraksin, Joel Cryer, K.C. Cushman, Kyla M. Dahlin, Phuong Dao, Athena DiBartolo, Michael Eastwood, Clayton Elder, Angela Giordani, Kathleen Grant, Robert Green, Alexa Hanson, Brendan Heberlein, Mark Helmlinger, Simon Hook, Daniel Jensen, Emma Johnson, Marie Johnson, Michael Kiper, Christopher Kibler, Jennifer King, Kyle Kovach, Aaron Kreisberg, Daniel Lacey, Evan Lang, Christine Lee, Amanda M Lopez, Brittany Lopez Barreto, Andrew Maguire, Elliott Marsh, Charles Miller, Dieu My Nguyen, Cassandra Nickles, Jonathan Ocón, Elijah Papen, Maria Park, Benjamin Poulter, Ann Raiho, Porter Reim, Timothy J. Robinson, Fernando Romero Galvan, Ethan Shafron, Brenen R. Skalitzky, Sydney Stroschein, Nicole Taylor, David Thompson, Kate Thompson, Cecily Tye, Joelie Van Beek, Cecilia Vanden Heuvel, Jonathan Vellanoweth, Evert Vermeer, Claire Villanueva-Weeks, Kristen Zumdahl, David Schimel
The EnMAP spaceborne imaging spectroscopy mission: Initial scientific results two years after launch The EnMAP spaceborne imaging spectroscopy mission: Initial scientific results two years after launch
Imaging spectroscopy has been a recognized and established remote sensing technology since the 1980s, mainly using airborne and field-based platforms to identify and quantify key bio- and geo-chemical surface and atmospheric compounds, based on characteristic spectral reflectance features in the visible-near infrared (VNIR) and short-wave infrared (SWIR). Spaceborne missions, a leap in...
Authors
Sabine Chabrillat, Saskia Foerster, Karl Segl, Alison Beamish, Maximilian Brell, Saeid Asadzadeh, Robert Milewski, Kathrin J. Ward, Arlena Brosinsky, Katrin Koch, Daniel Scheffler, Stephane Guillaso, Alexander Kokhanovsky, Sigrid Roessner, Luis Guanter, Hermann Kauffman, Nicole Pinnel, Emiliano Carmona, Tobias Storch, Tobias Hank, Katja Berger, Mathias Wocher, Patrick Hostert, Sebastian van der Linden, Akpona Okujeni, Andreas Janz, Benjamin Jakimow, Astrid Bracher, Mariana Soppa, L.M.A. Alvarado, H. Buddenbaum, Birgit Heim, Uta Heiden, Jose Moreno, Cindy Ong, Niklas Bohn, Robert O. Green, Martin Bachmann, Raymond Kokaly, Martin Schodlok, Thomas H. Painter, Ferran Gascon, Fabrizia Buongiorno, Matti Mottus, Vittorio Ernesto Brando, Hannes Feilhauer, Matthias Betz, Simon Baur, Rupert Feckl, Anke Schickling, Vera Krieger, Michael Bock, Laura La Porta, Sebastian Fischer
Hyperspectral (VNIR-SWIR) analysis of roll front uranium host rocks and industrial minerals from Karnes and Live Oak Counties, Texas Coastal Plain Hyperspectral (VNIR-SWIR) analysis of roll front uranium host rocks and industrial minerals from Karnes and Live Oak Counties, Texas Coastal Plain
VNIR-SWIR (400–2500 nm) reflectance measurements were made on the surfaces of various cores, cuttings and sample splits of sedimentary rocks from the Tertiary Jackson Group, and Catahoula, Oakville and Goliad Formations. These rocks vary in composition and texture from mudstone and claystone to sandstone and are known host rocks for roll front uranium occurrences in Karnes and Live Oak...
Authors
Bernard Hubbard, Tanya J. Gallegos, Victoria Stengel, Todd Hoefen, Raymond Kokaly, Brent Elliott
The EnMAP imaging spectroscopy mission towards operations The EnMAP imaging spectroscopy mission towards operations
EnMAP (Environmental Mapping and Analysis Program) is a high-resolution imaging spectroscopy remote sensing mission that was successfully launched on April 1st, 2022. Equipped with a prism-based dual-spectrometer, EnMAP performs observations in the spectral range between 418.2 nm and 2445.5 nm with 224 bands and a high radiometric and spectral accuracy and stability. EnMAP products, with...
Authors
Tobias Storch, Hans-Peter Honold, Sabine Chabrillat, Martin Habermeyer, Paul Tucker, Maximilian Brell, Andreas Ohndorf, Katrin Wirth, Matthias Betz, Michael Kuchler, Helmut Muhle, Emiliano Carmona, Simon Baur, Martin Mucke, Sebastian Low, Daniel Schulze, Steffen Zimmermann, Christoph Lenzen, Sebastian Wiesner, Saika Aida, Ralph Kahle, Peter Willburger, Sebastian Hartung, Daniele Dietrich, Nicolae Plesia, Mirco Tegler, Katharina Schork, Kevin Alonso, David Marshall, Birgit Gerasch, Peter Schwind, Miguel Pato, Mathias Schneider, Raquel de los Reyes, Maximilian Langheinrich, Julian Wenzel, Martin Bachmann, Stefanie Holzwarth, Nicole Pinnel, Luis Guanter, Karl Segl, Daniel Scheffler, Saskia Foerster, Niklas Bohn, Astrid Bracher, Mariana Soppa, Ferran Gascon, Robert O. Green, Raymond Kokaly, Jose Moreno, Cindy Ong, Manuela Sornig, Ricarda Wernitz, Klaus Bagschik, Detlef Reintsema, Laura La Porta, Anke Schickling, Sebastian Fischer
Hyperspectral remote sensing of white mica: A review of imaging and point-based spectrometer studies for mineral resources, with spectrometer design considerations Hyperspectral remote sensing of white mica: A review of imaging and point-based spectrometer studies for mineral resources, with spectrometer design considerations
Over the past ~30 years, hyperspectral remote sensing of chemical variations in white mica have proven to be useful for ore deposit studies in a range of deposit types. To better understand mineral deposits and to guide spectrometer design, this contribution reviews relevant papers from the fields of remote sensing, spectroscopy, and geology that have utilized spectral changes caused by...
Authors
John Meyer, Elizabeth Holley, Raymond Kokaly
Multiscale hyperspectral imaging of hydrothermal alteration in Yellowstone National Park, USA Multiscale hyperspectral imaging of hydrothermal alteration in Yellowstone National Park, USA
Imaging spectroscopy (hyperspectral imaging) data have mainly been used to map surface materials covering relatively small areas from airborne sensors over the past 20+ years. As part of the U.S. Geological Survey Integrated hyperspectral, geophysical and geochemical studies of Yellowstone National Park hydrothermal systems project, we have collected multiscale imaging spectrometer data...
Authors
Todd Hoefen, Raymond Kokaly, Keith Eric Livo, John Meyer, JoAnn Holloway
Mineral Mapping of the Battle Mountain District, Nevada, USA, Using AVIRIS-Classic and SpecTIR Inc. AisaFENIX 1K Imaging Spectrometer Datasets Mineral Mapping of the Battle Mountain District, Nevada, USA, Using AVIRIS-Classic and SpecTIR Inc. AisaFENIX 1K Imaging Spectrometer Datasets
Imaging spectroscopy (hyperspectral imaging) has been used to successfully map minerals at the outcrop, deposit, district, and regional scale. This contribution presents spectral-based mineral maps of the Battle Mountain mining district, Nevada, USA, generated using multi-scale airborne imaging and ground-based point spectrometers. Airborne Visible/Infrared Imaging Spectrometer (AVIRIS)...
Authors
John Meyer, Elizabeth Holley, Raymond Kokaly, Gregg Swayze, Todd Hoefen
Quantifying uncertainty for remote spectroscopy of surface composition Quantifying uncertainty for remote spectroscopy of surface composition
Remote surface measurements by imaging spectrometers play an important role in planetary and Earth science. To make these measurements, investigators calibrate instrument data to absolute units, invert physical models to estimate atmospheric effects, and then determine surface properties from the spectral reflectance. This study quantifies the uncertainty in this process. Global missions...
Authors
David Thompson, Amy Braverman, Philip Brodrick, Alberto Candela, Nimrod Carmon, Roger N. Clark, David Connelly, Robert O. Green, Raymond Kokaly, Longlei Li, Natalie Mahowald, Ronald Miller, Gregory Okin, Thomas H. Painter, Gregg Swayze, Michael Turmon, Jouni Susilouto, David Wettergreen
Dust deposited on snow cover in the San Juan Mountains, Colorado, 2011-2016: Compositional variability bearing on snow-melt effects Dust deposited on snow cover in the San Juan Mountains, Colorado, 2011-2016: Compositional variability bearing on snow-melt effects
Light-absorbing particles in atmospheric dust deposited on snow cover (dust-on-snow, DOS) diminish albedo and accelerate the timing and rate of snow melt. Identification of these particles and their effects are relevant to snow-radiation modeling and thus water-resource management. Laboratory-measured reflectance of DOS samples from the San Juan Mountains (USA) were compared with DOS...
Authors
Richard Reynolds, Harland Goldstein, Bruce Moskowitz, Raymond Kokaly, Seth Munson, Peat Solheid, George Breit, Corey Lawrence, Jeff Derry
Classification of oil spill by thicknesses using multiple remote sensors Classification of oil spill by thicknesses using multiple remote sensors
Satellite Synthetic Aperture Radar (SAR) is an operational tool for monitoring and assessment of oil spills. Satellite SAR has primarily been used to detect the presence/absence of oil, yet its ability to discriminate oil emulsions within a detected oil slick has not been fully exploited. Additionally, one of the challenges in the past has been the ability to deliver strategic...
Authors
Oscar Garcia-Pineda, Gordon Staples, Cathleen E Jones, Chuanmin Hu, Benjamin Holt, Villy Kourafalou, George Graettinger, Lisa DiPinto, Ellen Ramirez, David Street, Jay Cho, Gregg Swayze, Shaojie Sun, Diana Garcia, Francisco Haces-Garcia
Comparison of methods for modeling fractional cover using simulated satellite hyperspectral imager spectra Comparison of methods for modeling fractional cover using simulated satellite hyperspectral imager spectra
Remotely sensed data can be used to model the fractional cover of green vegetation (GV), non-photosynthetic vegetation (NPV), and soil in natural and agricultural ecosystems. NPV and soil cover are difficult to estimate accurately since absorption by lignin, cellulose, and other organic molecules cannot be resolved by broadband multispectral data. A new generation of satellite...
Authors
Philip Dennison, Yi Qi, Susan Meerdink, Raymond Kokaly, David R. Thompson, Craig Daughtry, Miguel Quemada, Dar Roberts, Paul Gader, Erin Wetherley, Izaya Numata, Keely Roth
Imaging spectroscopy for the detection, assessment and monitoring of natural and anthropogenic hazards Imaging spectroscopy for the detection, assessment and monitoring of natural and anthropogenic hazards
Natural and anthropogenic hazards have the potential to impact all aspects of society including its economy and the environment. Diagnostic data to inform decision-making are critical for hazard management whether for emergency response, routine monitoring or assessments of potential risks. Imaging spectroscopy (IS) has unique contributions to make via the ability to provide some key...
Authors
Cindy Ong, Veronique Carrere, Sabine Chabrillat, Roger N. Clark, Todd Hoefen, Raymond Kokaly, Rodolphe Marion, Carlos Souza Filho, Gregg Swayze, David Thompson