Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Christine Smith-Johnsen"'
Autor:
Josephine Salice, Hilde Nesse, Noora Partamies, Emilia Kilpua, Andrew Kavanagh, Margot Decotte, Eldho Babu, Christine Smith-Johnsen
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
Compositional NOx changes caused by energetic electron precipitation (EEP) at a specific altitude and those co-dependent on vertical transport are referred to as the EEP direct and indirect effect, respectively. The direct effect of EEP at lower meso
Externí odkaz:
https://doaj.org/article/b2e185d5f6e14b80b07d060b66156ed7
Autor:
Josephine Salice, Hilde Nesse, Noora Partamies, Emilia Kilpua, Andrew Kavanagh, Eldho Babu, Christine Smith-Johnsen
Publikováno v:
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Compositional NOx changes caused by energetic electron precipitation (EEP) at a specific altitude are called the EEP direct effect. Changes co-dependent on vertical transport are referred to as the EEP indirect effect. The relative importance of EEP
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9dcfa9324636927db03ba1aaab29dc17
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016818
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016818
Medium energy electron (MEE) (>30 keV) precipitation into the Earth's atmosphere is acknowledged as a relevant part of solar forcing as collisions between electrons and atmospheric gasses initiate several chemical reactions which can reduce ozone con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a34f42c8c98bc1d7d65ee74c868d3789
https://doi.org/10.5194/egusphere-egu22-2745
https://doi.org/10.5194/egusphere-egu22-2745
Autor:
Christine Smith‐Johnsen, Daniel Robert Marsh, Anne K. Smith, Hilde Nesse Tyssøy, Ville Maliniemi
Publikováno v:
e2021JA029998
Journal of Geophysical Research (JGR): Space Physics
Journal of Geophysical Research (JGR): Space Physics
Energetic particle precipitation (EPP) causes ionization of the main constituents of the Earth's atmosphere which leads to the production of nitric oxide (NO) throughout the polar mesosphere and lower thermosphere (MLT). Due to the long lifetime of N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c002db4703444a72ba46f80a12c5633
https://hdl.handle.net/11250/3061660
https://hdl.handle.net/11250/3061660
Publikováno v:
e2022GL097812
Geophysical Research Letters
Geophysical Research Letters
Medium energy electron (MEE) (30–1,000 keV) precipitation enhances the production of nitric (NOx) and hydrogen oxides (HOx) throughout the mesosphere, which can destroy ozone (O3) in catalytic reactions. The dynamical effect of the direct mesospher
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97216b9313c10a10284167316c09b00e
https://hdl.handle.net/11250/3028898
https://hdl.handle.net/11250/3028898
Autor:
Mark A. Clilverd, Thomas Reddmann, Eugene Rozanov, Olesya Yakovchuk, Bernd Funke, Christine Smith-Johnsen, Pekka T. Verronen, Cora E. Randall, Hilde Nesse Tyssøy, Joshua Pettit, Max van de Kamp, J. M. Wissing, Timofei Sukhodolov, Timo Asikainen, Craig J. Rodger, Miriam Sinnhuber, Stefan Bender
Precipitating auroral and radiation belt electrons are considered an important part of the natural forcing of the climate system. Recent studies suggest that this forcing is underestimated in current chemistry-climate models. The HEPPA III intercompa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9166dcd6c968ada89a35188ca0408477
https://doi.org/10.5194/egusphere-egu21-5287
https://doi.org/10.5194/egusphere-egu21-5287
Autor:
Eldho Midhun Babu, Hilde Nesse Tyssøy, Christine Smith-Johnsen, Ville Maliniemi, Josephine Alessandra Salice, Robyn Millan
Energetic Electron Precipitation (EEP) from the plasma sheet and the radiation belts ionize the polar lower thermosphere and mesosphere. EEP increase the production of NOx and HOx, which will catalytically destroy stratospheric ozone, an important el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::087d541f036756f3bc194ba52029f066
https://doi.org/10.5194/egusphere-egu21-1240
https://doi.org/10.5194/egusphere-egu21-1240
Energetic electron precipitation (EEP) into the Earth's atmosphere can collide with gases and deposit their energy there. The collisions between electrons and atmospheric gasses initiate several chemical reactions which can reduce the ozone concentra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68f718fbc250af20e71cc30977344d83
https://doi.org/10.5194/egusphere-egu21-1084
https://doi.org/10.5194/egusphere-egu21-1084
Energetic electron precipitation (EEP) ionizes the Earth's atmosphere and leads to production of nitric oxide (NO) throughout the polar Mesosphere and Lower Thermosphere (MLT). In this study we investigate the direct and indirect NO response to the E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::863ffbf10740a5628c4903b91c4c6aab
https://doi.org/10.5194/egusphere-egu21-4525
https://doi.org/10.5194/egusphere-egu21-4525
Autor:
Christine Smith-Johnsen, Ville Maliniemi, Daniel R. Marsh, Pavle Arsenovic, Hilde Nesse Tyssøy
Ozone is expected to fully recover from the CFC-era by the end of the 21st century. Furthermore, because of anthropogenic climate change, a cooler stratosphere accelerates ozone production and is projected to lead to a super recovery of ozone. We inv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::311622d369346396171913b2aa2b8faa
https://acp.copernicus.org/preprints/acp-2021-149/
https://acp.copernicus.org/preprints/acp-2021-149/