Results 81 to 90 of about 50,845 (215)

Advanced Fade Mitigation Techniques for Q/V Band SATCOM Systems

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Adaptive fade mitigation techniques, such as smart gateway diversity (SGD), are essential in addressing atmospheric fading affecting the operation of high throughput and very high throughput satellite systems at Ka‐band and beyond. Specifically, the Q/V‐band, offering up to 5 GHz of available spectrum, is very attractive for future high data ...
Marianna Biscarini, Arijit De, Lorenzo Luini, Carlo Riva, Antonio Martellucci, Roberto Nebuloni   +5 more
wiley   +1 more source

Foraging plasticity and physiological adaptations enable hummingbirds to subsist on dilute nectars

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Hummingbirds frequently feed on small volumes (<30 μL) of sucrose‐rich nectars. Climate change is expected to affect both the abundance and the concentrations of accumulated nectar.
Rosalee L. Elting, Anusha Shankar, Catherine H. Graham, Holger Beck, Alejandro Rico‐Guevara, Donald R. Powers   +5 more
wiley   +1 more source

Study on the Impact of Urbanization on Summer Heat Waves in Yangtze River Delta

Gaoyuan qixiang
Under the background of global climate warming and rapid urbanization, extreme heat events have become a significant threat to human health and social sustainable development, particularly in Yangtze River Delta (YRD), a densely populated and ...
WU Yujia, LI Yarong, HE Jianjun, CHEN Liang   +3 more
doaj   +1 more source

Late‐Holocene evolution of a small Sub‐Arctic glacier, Gljúfurárjökull (Tröllaskagi, northern Iceland)

Boreas, EarlyView.
Gljúfurárjökull, located on the Tröllaskagi Peninsula in northern Iceland, is a small glacier approximately 3.8 km in length. This study analyses the glacier's evolution through a combination of methods including: (i) geomorphological mapping, (ii) Cosmic‐Ray Exposure (CRE) dating, (iii) lichenometry and (iv) palaeoglacier reconstruction (volume ...
Nuria Andrés, José M. Fernández‐Fernández, David Palacios, Irene Schimmelpfennig, Leopoldo G. Sancho, Skafti Brynjólfsson, Þorsteinn Sæmundsson, Wesley R. Farnsworth, Luis M. Tanarro, Mariano Brito, Javier Santos‐González, Rosa B. González‐Gutiérrez, ASTER Team, Georges Aumaître, Karim Keddadouche   +14 more
wiley   +1 more source

Hybrid Hydrodynamic‐Machine Learning Modelling for Rapid Flood Scenario Assessment: A Case Study in Aotearoa New Zealand

Journal of Flood Risk Management, Volume 19, Issue 2, June 2026.
ABSTRACT Flooding is one of the most devastating natural disasters worldwide. It is also expected to become more severe as climate change impacts are realised. Two‐dimensional (2D) hydrodynamic models are used to obtain reliable inundation estimations.
Andrea Pozo, Matthew Wilson, Marwan Katurji, Fernando J. Méndez, Cyprien Bosserelle, Emily Lane   +5 more
wiley   +1 more source

Characterizing Point‐Source Carbon Emissions by Combining TROPOMI CO and OCO CO2 Data

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract Understanding and independently validating carbon emissions from concentrated point sources is vital to support climate policy. Satellite‐based quantifications of CO2 ${\text{CO}}_{2}$ point source emissions have been limited by the spatial coverage of current satellite instruments. We combine three different satellite instruments to determine
Gijs Leguijt, Joannes D. Maasakkers, Hugo A. C. Denier van der Gon, Arjo J. Segers, Hannah Nesser, Ilse Aben   +5 more
wiley   +1 more source

Analysis on the effects of different horizontal resolutions and microphysical schemes on the simulation of a rainstorm in central China

暴雨灾害, 2019
Using the Weather Research and Forecasting (WRF) model, a heavy rainfall in central China during 30 June to 1 Jul 2016 is simulated to explore the effects of different horizontal resolutions and microphysical schemes. The results show that:(1) all of the
Zhaoping KANG, Zhiming ZHOU, Hongli LI
doaj   +1 more source

CW3E’s West-WRF 200-Member Ensemble

Monthly Weather Review
Abstract A 200-member ensemble developed at the Center for Western Weather and Water Extremes based on the Weather Research and Forecasting atmospheric model tailored for the prediction of atmospheric rivers and associated heavy-to-extreme precipitation events over the western United States (West-WRF) is presented.
Luca Delle Monache, Daniel F. Steinhoff, Rachel Weihs, Matthew Simpson, Mohammadvaghef Ghazvinian, Vesta Afzali Gorooh, Kevin M. Lupo, Patrick Mulrooney, Caroline Papadopoulos, F. Martin Ralph   +9 more
openaire   +2 more sources

An Evaluation of WRF‐Chem's Performance in Simulating PM2.5 in West African Cities

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract West Africa experiences some of the highest particulate pollution levels globally due to Saharan dust, biomass burning and urban emissions. Despite the severe health burden, air quality monitoring remains sparse. This study evaluates WRF‐Chem's performance in simulating PM2.5 levels across seven West African cities in 2021 using newly ...
Aara’L Y. Yarber, Gregory S. Jenkins
wiley   +1 more source

Regional Transport in the Arctic: Sensitivity of NOx and Particulate Matter in Wintertime Urban Alaska to Background Air

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract Fairbanks, Alaska is an example of a subarctic city that experiences severe wintertime air quality episodes characterized by high concentrations of fine particulate matter (PM2.5) and nitrogen oxides (NO and NO2 = NOx). Previous research into these air quality episodes has focused on the impact of surface‐based inversions that trap local ...
Alicia Hoffman, Steve R. Arnold, Dwayne Heard, Lisa Whalley, Natalie Brett, Kathy S. Law, Jean‐Christophe Raut, Tatsuo Onishi, Slimane Bekki, William R. Simpson, Meeta Cesler‐Maloney, Brice Barret, Roman Pohorsky, Julia Schmale, Brice Temime‐Roussel, Barbara D’Anna   +15 more
wiley   +1 more source