Results 71 to 80 of about 48,880 (203)

U‐Net Based Machine Learning for Identification of Auroras in Space‐Based Images

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract We use a Semantic Segmentation based U‐Net model to predict the appearance of various classifications of aurora present in near‐infrared images from the Fast Auroral Imager (FAI) onboard the CASSIOPE satellite. We manually labeled pixels from a set of 4091 FAI near‐infrared images into 7 different classes: no aurora, contaminated, diffuse ...
Amit Kain, Matthew G. Finley, Andrew D. Howarth, Andrew W. Yau, David M. Miles   +4 more
wiley   +1 more source

The Interplay of Fire and Vertical Strata Shaping Herbivorous Insect Communities in Altimontane Forest Islands

Biotropica, Volume 58, Issue 5, September 2026.
ABSTRACT Understanding how fire and vertical stratification interact to shape insect communities is essential in increasingly fire‐prone montane systems. We investigated how herbivorous insect communities vary across vertical strata (canopy and understory) and fire incidence in 14 altitudinal forest islands within the Espinhaço Range, Brazil.
Juliana Kuchenbecker, Flávio Camarota, Pedro Giovâni da Silva, Lucas Neves Perillo, Luiz Eduardo Macedo Reis, Milton Barbosa, Bernardo Puliero, Joaquin Hortal, Frederico Neves   +8 more
wiley   +1 more source

Tipping Points in Bacterial Richness Amplify Extracellular Enzyme Activities in Northern Peatlands

Global Change Biology, Volume 32, Issue 9, September 2026.
Using a trans‐Holarctic survey in Sphagnum‐dominated peatlands, we identify a critical bacterial biodiversity threshold. Below this threshold, ecosystem function shifts, increasing enzyme activities by 60%, potentially accelerating carbon turnover. This weakens the peatland carbon sink, emphasizing the need to safeguard diversity.
Vincent E. J. Jassey, Tristan Lafont Rapnouil, Marie Le Geay, Romain Walcker, Laure Gandois, Maialen Barret, Nicolas Fanin, Bjorn J. M. Robroek, Béatrice Lauga, Luke O. Andrews, Alix Badré Greuza, Mark R. Bakker, Guillaume Bertrand, Tobias Birkwald, Paulo A. V. Borges, Brian Branfireun, Francis Q. Brearley, Cécile Brousseau, Zhao‐Jun Bu, Jean‐François Carrias, Sarah Coffinet, Bruno Corbarra, Eduardo M. F. Dias, Ellen Dorrepaal, André‐Jean Francez, Yuwen Fu, Marvin Gabriel, Rosalina Gabriel, Stéphanie Gerin, Daniel Gilbert, Sébastien Gogo, Gustaf Granath, Emma Gray, Liam Heffernan, Thierry J. Heger, Sari Juutinen, Paul Kardol, Edgar Karofeld, Agata Klimkowska, Martin Küttim, Liisa Küttim, Olivia Kuuri‐Riutta, Terri Lacourse, Mariusz Lamentowicz, Gaël Le Roux, Zoë Lindo, Roy Mackenzie, Katarzyna Marcisz, Yuri A. Mazei, Natalia G. Mazei, Cândida M. F. Mendes, Edward A. D. Mitchell, Juanita Mora‐Gomez, Raphael Müller, Kathy Pouliot, Anna‐Helena Purre, Achim Quaiser, Brenda Riquelme‐del Río, Allison R. Rober, Line Rochefort, Ana C. Rodríguez, A. Britta K. Sannel, Fabian Seemann, Laurent Servière, Maria Strack, Graeme T. Swindles, Julie Talbot, Andrey N. Tsyganov, Eeva‐Stiina Tuittila, Alexander T. Tveit, Minna M. Väliranta, Kevin H. Wyatt, Henni Ylänne, Zicheng Yu, Evgeny A. Zarov, Samuel Hamard   +75 more
wiley   +1 more source

A GEO‐LEO Imager Data Set for Characterizing Rapid Changes of Global Aerosol Properties

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 15, 16 August 2026.
Abstract Aerosols, the ubiquitous small particulates in our atmosphere, have climate, air quality, and/or other impacts far from their original sources. The Dark Target Algorithm (DTA), originally developed for retrieving aerosol properties from satellite imagers in Low‐Earth Orbit (LEO), has been ported to imagers in Geostationary (GEO) orbit. Using a
R. C. Levy, P. Gupta, Y. R. Shi, L. A. Remer, M. Kim, M. M. Oo, J. Wei, V. R. Sawyer, V. P. Kiliyanpilakkil, R. E. Holz, B. Ramachandran, R. B. Pierce, S. Mattoo   +12 more
wiley   +1 more source

S-NPP VIIRS SDR data 2015-03-01 02:48

, 2015
<p>Suomi NPP VIIRS SDR data from the Norrköping DR station, covering Northern Europe including Scandinavia and surrounding seas.</p> <p>2015-03-01 02:48 - 03:03</p ...
Adam Dybbroe, Adam Dybbroe (4990967)
core   +1 more source

Vertical Coherence Dominates Decadal Land Water Storage Change Despite Hydroclimatic Extremes and Groundwater Pumping

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Whether surface and deeper water storage trends move in the same direction underpins assessments of freshwater availability. Theory predicts vertical coherence, yet it is untested globally and questioned under climate extremes and human management. Using depth‐sensitive satellite observations spanning surface soil moisture (SSM) (Soil Moisture
Meng Zhao, Runze Zhang, Geruo A, Dara Entekhabi   +3 more
wiley   +1 more source

Mesospheric Bore Observations Using Suomi-NPP VIIRS DNB during 2013–2017

Remote Sensing, 2018
This paper reports mesospheric bore events observed by Day/Night Band (DNB) of the Visible/Infrared Imaging Radiometer Suite (VIIRS) on the National Oceanic and Atmospheric Administration/National Aeronautics and Space Administration (NOAA/NASA) Suomi ...
Yucheng Su, Jia Yue, Xiao Liu, Steven D. Miller, William C. Straka, Steven M. Smith, Dong Guo, Shengli Guo   +7 more
doaj   +1 more source

How Well Is the Lake‐Land Breeze Circulation of Lake Victoria Captured in ECMWF Operational Analysis?

Atmospheric Science Letters, Volume 27, Issue 8, August 2026.
Lake‐breeze fronts (LBFs) strongly influence cloudiness, deep convection, and heavy rainfall around tropical lakes, yet their representation in global forecast systems remains uncertain. Using a newly developed objective detection algorithm, we evaluate LBF evolution and timing in ECMWF forecasts.
Musa Ssemujju, Marlon Maranan, Andreas H. Fink, Simon Ageet   +3 more
wiley   +1 more source

Analyzing parcel-level relationships between Luojia 1-01 nighttime light intensity and artificial surface features across Shanghai, China: A comparison with NPP-VIIRS data

International Journal of Applied Earth Observations and Geoinformation, 2020
Nighttime light (NTL) remote sensing data have been widely used to derive socioeconomic indices at national and regional scales. However, few studies analyzed the factors that may explain NTL variations at a fine scale due to the limited resolution of ...
Congxiao Wang, Zuoqi Chen, Chengshu Yang, Qiaoxuan Li, Qiusheng Wu, Jianping Wu, Guo Zhang, Bailang Yu   +7 more
doaj   +1 more source

Remote Sensing During the 2025 Los Angeles Wildfires

AGU Advances, Volume 7, Issue 5, August 2026.
Abstract The January 2025 Los Angeles County wildfires burned more than 50,000 acres, destroyed more than 16,000 structures, and caused 31 deaths. This Commentary examines how NASA's Disasters Program coordinated with response organizations to deliver 22 satellite and airborne products during the fires, even as the Eaton Fire forced the Jet Propulsion ...
Julie Rolla, Kimberley Miner, Clayton Elder, Eric Howard, Julia Milton, Nathan Spangler   +5 more
wiley   +1 more source