Results 121 to 130 of about 1,876,300 (167)

First data of the Colombia Lightning Mapping Array - COLMA

The first data set of VHF lightning mapping using a Lightning Mapping Array system - LMA in a tropical region is presented in this paper. Six sensors were installed at the north of Colombia near Santa Marta city. Since the installation of the LMA network
Van der Velde, Oscar Arnoud, López Trujillo, Jesús Alberto, Aranguren Fino, Harby Daniel, Montañá Puig, Juan, Martínez, Joaquin, Torres Sanchez, Horacio, Taborda, John, Romero Durán, David   +7 more
core  

Regional Models for Postfire Debris‐Flow Likelihood and Rainfall Thresholds Across the Western United States

Earth Surface Processes and Landforms, Volume 51, Issue 9, September 2026.
Using a newly expanded debris‐flow inventory, we calibrate a new set of region‐specific logistic models for predicting the likelihood of, and rainfall thresholds for, runoff‐generated postfire debris flows. The updated models consistently outperform a previous model and can improve assessment of debris‐flow hazards for burned areas across the western ...
Andrew P. Graber, Brittany D. Selander, Katherine R. Barnhart, Alexander N. Gorr, Jason W. Kean, Jonathan M. King, Jaime Kostelnik, Francis K. Rengers, Matthew A. Thomas   +8 more
wiley   +1 more source

Bath Vibration During Open Eye Formation in a Physical Model of a Steelmaking Ladle

steel research international, Volume 97, Issue 9, Page 4684-4713, September 2026.
Using a physical model, this study shows that vibration measurements reliably predict open eye size in steelmaking ladles, offering a practical alternative to visual monitoring. Vessel vibrations stabilize faster than the open eye, except at high frequencies near the bottom.
Mika Pylvänäinen, Juhani Nissilä, Ville‐Valtteri Visuri, Aki Sorsa, Matias Hauru, Jouni Laurila, Toni Liedes   +6 more
wiley   +1 more source

Development and Evaluation of the Simplified Tropospheric Chemistry Mechanism T4 in the Community Earth System Model (CESM) for Climate Simulations

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 9, September 2026.
Abstract Simulating atmospheric chemistry in Earth system models is critical for climate projections but remains computationally intensive. Comprehensive mechanisms, such as the MOZART‐T1 scheme in the Community Earth System Model (CESM), often limit the feasibility of long‐term or large‐ensemble simulations.
Jun Zhang, Louisa Emmons, John Orlando, Rebecca R. Buchholz, Benjamin Gaubert, Shawn Honomichl, Danny Leung, Simone Tilmes, Kyle Shores, Francis Vitt   +9 more
wiley   +1 more source

Lightning Impulse Ageing of HDPE

, 2009
This work is concerned with the hypothesis that lightning impulses can lead to accelerated ageing of extruded polymeric cables. The behaviour of an insulation material when suffering lightning impulses is different from that for DC or power frequency ...
Dao, N L, Swingler, S G, Lewin, P L
core   +1 more source

The Impacts of Tropospheric Gravity Wave‐Generated MSTIDs on Skywaves at Mid‐latitude North American Sector Observed and Modeled Using SuperDARN HF Radars

Radio Science, Volume 61, Issue 9, September 2026.
Abstract Trans‐ionospheric high frequency (HF: 3–30 MHz) response to atmospheric gravity waves (GWs) is studied in the middle‐latitude ionosphere in relation to thunderstorm activity. SuperDARN HF radar observations are compared against the model simulations to quantify the impact of GW‐generated medium‐scale traveling ionospheric disturbances (MSTID ...
S. Chakraborty, P. A. Inchin, S. Debchoudhury, B. Bergsson, M. Zettergren, J. M. Ruohoniemi   +5 more
wiley   +1 more source

The Characterization of Electric Field Pulses Observed in the Preliminary Breakdown Processes of Normal and Inverted Intracloud Flashes

Remote Sensing
We have studied the parameters of preliminary breakdown (PB) pulses in 395 normal and 319 inverted intracloud (IC) flashes observed in Gifu, Japan, and Ningxia, China, respectively, by using a low-frequency mapping system called fast antenna lightning ...
Dongdong Shi, Jinlai Zhang, Panliang Gao, Dong Zheng, Qi Qi, Jie Shao, Shiqi Kan, Daohong Wang, Ting Wu   +8 more
doaj   +1 more source

Spatio-temporal dimension of lightning flashes based on three-dimensional Lightning Mapping Array

3D mapping system like the LMA - Lightning Mapping Array - are a leap forward in lightning observation. LMA measurements has lead to an improvement on the analysis of the fine structure of lightning, allowing to characterize the duration and maximum ...
Pineda Rüegg, Nicolau, Van der Velde, Oscar Arnoud, Fabró Tàpia, Ferran, López Trujillo, Jesús Alberto, Montañá Puig, Juan, Romero Durán, David   +5 more
core  

Estimates of the Lightning NOx Profile in the Vicinity of the North Alabama Lightning Mapping Array [PDF]

, 2010
The NASA Marshall Space Flight Center Lightning Nitrogen Oxides Model (LNOM) is applied to August 2006 North Alabama Lightning Mapping Array (NALMA) data to estimate the (unmixed and otherwise environmentally unmodified) vertical source profile of ...
Blazar, Arastoo, Peterson, Harold S., McCaul, Eugene W., Koshak, William J.   +3 more
core  

Global Ozone Reduction Driven by Dust‐Catalyzed Halogen Chemistry

AGU Advances, Volume 7, Issue 6, September 2026.
Abstract Tropospheric ozone (O3) influences climate and poses risks to human health and crop productivity. Its distribution is shaped by complex interactions between chemical production, transport, and loss processes, including reactions with naturally occurring halogens.
D. Meidan, A. Bossolasco, C. A. Cuevas, J. Villamayor, R. P. Fernandez, Q. Li, X. Fu, X. Sun, A. Saiz‐Lopez   +8 more
wiley   +1 more source