Show simple item record

dc.contributor.authorSmith-Johnsen, Christine
dc.contributor.authorMarsh, Daniel R.
dc.contributor.authorOrsolini, Yvan
dc.contributor.authorTyssøy, Hilde Nesse
dc.contributor.authorHendrickx, Koen
dc.contributor.authorSandanger, Marit Irene J.
dc.contributor.authorØdegaard, Linn-Kristine Glesnes
dc.contributor.authorStordal, Frode
dc.PublishedSmith-Johnsen C, Marsh DR, Orsolini Y, Tyssøy H, Hendrickx K, Sandanger MIS, Ødegaard LKG, Stordal F. Nitric Oxide Response to the April 2010 Electron Precipitation Event: Using WACCM and WACCM‐D With and Without Medium‐Energy Electrons. Journal of Geophysical Research - Space Physics. 2018;123:5232-5245eng
dc.description.abstractEnergetic electrons from the magnetosphere deposit their energy in the atmosphere and lead to production of nitric oxide (NO) in the mesosphere and lower thermosphere. We study the atmospheric NO response to a geomagnetic storm in April 2010 with WACCM (Whole Atmosphere Community Climate Model). Modeled NO is compared to observations by Solar Occultation For Ice Experiment/Aeronomy of Ice in the Mesosphere at 72–82°S latitudes. We investigate the modeled NOs sensitivity to changes in energy and chemistry. The electron energy model input is either a parameterization of auroral electrons or a full range energy spectrum (1–750 keV) from National Oceanic and Atmospheric Administration/Polar Orbiting Environmental Satellites and European Organisation for the Exploitation of Meteorological Satellites/Meteorological Operational satellites. To study the importance of ion chemistry for the production of NO, WACCM‐D, which has more complex ion chemistry, is used. Both standard WACCM and WACCM‐D underestimate the storm time NO increase in the main production region (90–110 km), using both electron energy inputs. At and below 80 km, including medium‐energy electrons (>30 keV) is important both for NO directly produced at this altitude region and for NO transported from other regions (indirect effect). By using WACCM‐D the direct NO production is improved, while the indirect effects on NO suffer from the downward propagating deficiency above. In conclusion, both a full range energy spectrum and ion chemistry is needed throughout the mesosphere and lower thermosphere region to increase the direct and indirect contribution from electrons on NO.en_US
dc.publisherAmerican Geophysical Unionen_US
dc.rightsAttribution CC BY-NC-NDeng
dc.titleNitric Oxide Response to the April 2010 Electron Precipitation Event: Using WACCM and WACCM‐D With and Without Medium‐Energy Electronsen_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright 2018 The Authorsen_US
dc.source.journalJournal of Geophysical Research - Space Physics
dc.relation.projectNorges forskningsråd: 222390
dc.relation.projectNorges forskningsråd: 223252

Files in this item


This item appears in the following Collection(s)

Show simple item record

Attribution CC BY-NC-ND
Except where otherwise noted, this item's license is described as Attribution CC BY-NC-ND