Zobrazeno 1 - 10
of 179
pro vyhledávání: '"Nikolai Østgaard"'
Autor:
Oscar A. van der Velde, Javier Navarro-González, Ferran Fabró, Víctor Reglero, Paul Connell, Olivier Chanrion, Jesús A. López, Joan Montanyà, Torsten Neubert, Nikolai Østgaard
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract The Atmosphere-Space Interactions Monitor (ASIM) on the International Space Station (ISS) includes an instrument designed to geolocate Terrestrial Gamma-ray Flashes (TGF) produced by thunderstorms. It does so with a coded aperture system sha
Externí odkaz:
https://doaj.org/article/f8d2e2f39f2646c88afe88111f8baccd
Autor:
Feifan Liu, Gaopeng Lu, Torsten Neubert, Jiuhou Lei, Oliver Chanrion, Nikolai Østgaard, Dongshuai Li, Alejandro Luque, Francisco J. Gordillo-Vázquez, Victor Reglero, Weitao Lyu, Baoyou Zhu
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)
Strong thunderstorms can reach the lower stratosphere and produce cloud-top blue emissions, affecting the exchange of greenhouse gases between the troposphere and stratosphere. Here, the authors reveal the direct link of blue emissions with the radio
Externí odkaz:
https://doaj.org/article/7c3e7bf39e1c4b2880fd40b6e6aa9457
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
The By component of the magnetic field inside the magnetosphere is positively correlated with the By component of the Interplanetary Magnetic Field (IMF). This leads to asymmetries in aurora, plasma convection and electric currents between the northe
Externí odkaz:
https://doaj.org/article/4f4d3d7427d64e9298f591978061940e
Autor:
Francisco J. Pérez-Invernón, Francisco J. Gordillo-Vázquez, María Passas-Varo, Torsten Neubert, Olivier Chanrion, Victor Reglero, Nikolai Østgaard
Publikováno v:
Remote Sensing, Vol 14, Iss 9, p 2057 (2022)
We present spectroscopic diagnostic methods that allow us to estimate the gas and the electron temperature in emerged lightning stroke channels (from thunderclouds) observed by the photometers and cameras of the Atmosphere Space Interaction Monitor (
Externí odkaz:
https://doaj.org/article/257c6c731ff64d2f8eead36ad87c1ee0
Autor:
Oscar A. van derVelde, Joan Montanyà, Torsten Neubert, Olivier Chanrion, Nikolai Østgaard, Steven Goodman, Jesús A. López, Ferran Fabró, Victor Reglero
Publikováno v:
Earth and Space Science, Vol 7, Iss 10, Pp n/a-n/a (2020)
Abstract We analyze a nighttime negative cloud‐to‐ground lightning flash in Colombia observed from the ground with a high‐speed camera at 5,000 images per second and from space by the Atmosphere‐Space Interactions Monitor (ASIM) on the Intern
Externí odkaz:
https://doaj.org/article/4465f42dae91443f8feb03de3c24df4d
Autor:
Andreas Ramsli, Martino Marisaldi, Anastasia Tsvetkova, Cristiano Guidorzi, David Sarria, Andrey Mezentsev, Anders Lindanger, Nikolai Østgaard, Torsten Neubert, Victor Reglero, Dmitry Svinkin, Alexandra Lysenko, Dmitry Frederiks
The Atmosphere-Space Interactions Monitor (ASIM) is a mission of the European Space Agency launched in April 2018 and hosted onboard the International Space Station (ISS). ASIM is dedicated to study the physics of Transient Luminous Events (TLEs) and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c0fb5156b871edd0eeac2202b53806e
https://doi.org/10.5194/egusphere-egu23-14736
https://doi.org/10.5194/egusphere-egu23-14736
Autor:
Dongshuai Li, Torsten Neubert, Olivier Chanrion, Lasse Skaaning Husbjerg, Alejandro Luque, Yanan Zhu, Nikolai Østgaard, Víctor Reglero
The Atmosphere-Space Interactions Monitor (ASIM) on the International Space Station (ISS) observes lightning and Transient Luminous Events (TLEs) above the thunderstorm clouds. ASIM includes three photometers that sample at 100 kHz and two cameras th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::198665e67b6543c3a5eb1db365237ba8
https://doi.org/10.5194/egusphere-egu23-9041
https://doi.org/10.5194/egusphere-egu23-9041
Autor:
Alejandro Luque Estepa, Ingrid Bjørge-Engeland, Dongshuai Li, Nikolai Østgaard, Martino Marisaldi
ELVEs are quickly expanding rings of light emissions excited in the lower ionosphere by the electromagnetic pulse of an electric discharge in a thundercloud. They are commonly observed from space platforms and have been reported in conjunction with o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6509252a9213cf2f5d355574e4e00e35
https://doi.org/10.5194/egusphere-egu23-16046
https://doi.org/10.5194/egusphere-egu23-16046
Autor:
Lasse Husbjerg, Torsten Neubert, Olivier Chanrion, Martino Marisaldi, Martin Stendel, Eigil Kaas, Nikolai Østgaard, Victor Reglero
We present the largest catalogue compiled to date of TGFs and associated lightning activity, geostationary satellite cloud images and ERA5 reanalysis data. The TGFs are observed from AGILE, ASIM, FERMI and RHESSI, and the lightning activity by the WW
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f2a3f7619defd8ca5da79f460f3cc37
https://doi.org/10.5194/egusphere-egu23-9459
https://doi.org/10.5194/egusphere-egu23-9459
Autor:
Javier Navarro-González, Paul Connell, Chris Eyles, Víctor Reglero, Jesús Alberto López, Joan Montanyà, Martino Marisaldi, Andrey Mezentzev, Anders Lindanger, David Sarria, Nikolai Østgaard, Olivier Chanrion, Freddy Christiansen, Torsten Neubert
In the first two years of ASIM operations from June 2018 till the end of 2019 486 TGFs have been observed, with a TGF rate of 0.84 per day. Their geographical distribution is consistent with the three main lightning chimneys Central America, Central
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18e65275946a94a5cabe6b203e138f88
https://doi.org/10.5194/egusphere-egu23-15876
https://doi.org/10.5194/egusphere-egu23-15876