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http://dx.doi.org/10.1016/j.jtcvs.2019.01.096 | DOI Listing |
Anal Chem
July 2024
Department of Chemistry, Indian Institute of Science Education and Research Tirupati, Tirupati 517507, India.
Water microdroplets are widespread in the atmosphere. We report a striking observation that micron-sized water droplets obtained from zero-volt spray sources (sonic spray, humidifier, spray bottle, steamer, etc.) spontaneously generate nitrogen oxides.
View Article and Find Full Text PDFSci Total Environ
December 2023
Institute of Mass Spectrometry and Atmospheric Environment, Jinan University, Guangzhou 511443, China; Institute of Tropical and Marine Meteorology, Guangdong Provincial Key Laboratory of Regional Numerical Weather Prediction, China Meteorological Administration, Guangzhou 510640, China.
Extremely high-temperature lightning generates NO by electrolyzing nitrogen and oxygen molecules, regulating ozone concentration. The Pearl River Delta (PRD) is located in the world's high-value area of lightning density, and lightning-generated NO (LNO) cannot be ignored. Using the flash data from Guangdong-Hong Kong-Macao Lightning Location System and multi-site atmospheric composition data, we estimate the NO variations in lightning activity and its impact on O across the PRD region.
View Article and Find Full Text PDFRev Sci Instrum
August 2022
Laboratoire GeePs, CNRS UMR8507, Université Paris Saclay, CentraleSupélec, 91190 Gif-sur-Yvette, France.
When aircraft are struck by lightning, the aircraft's structural fuselage and components are stressed by electrical and thermo-mechanical constraints, which imposes a need for reliable experimental test benches to design accurate and enhanced lightning protection. In order to reproduce the in-flight conditions of an aircraft in a laboratory, the aim of this work is to design and implement launch equipment able to propel aeronautical test samples at speeds characteristic of an aircraft- from 10 m/s for ultra-light gliders to 100 m/s for airliners-before striking it with an electric arc within the laboratory dimensions of several meters. After a comparison of several propulsion techniques, the selected solution is an augmented electromagnetic railgun launcher.
View Article and Find Full Text PDFElektrotech Informationstechnik
April 2022
Institute for Information and Communication Technologies, University of Applied Science and Arts Western Switzerland, Yverdon-les-Bains, Switzerland.
The Säntis Tower was instrumented in May 2010 to measure currents of lightning discharges striking the structure. Since then, the system has been recurrently updated and expanded. Presently, data associated with lightning striking the tower are collected at six different sites.
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