elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

CTIPe physics based model during the extreme geomagnetic storm on the 20th November 2003

Fernandez Gomez, Isabel and Borries, Claudia and Codrescu, M. V. (2016) CTIPe physics based model during the extreme geomagnetic storm on the 20th November 2003. SWW 2016, 25-29 Apr 2015, Broomfield, CO, USA.

[img] PDF - Registered users only
397kB

Abstract

Significant perturbations were produced in the thermosphere-ionosphere-magnetosphere system during the geomagnetic storm of the 20th November of 2003, one of the largest ever recorded. Under these extreme conditions, modelling the ionosphere will be a challenging task due to energy flow uncertainties. This work addresses the ionospheric perturbations over Europe, reproduced by the Coupled Thermosphere Ionosphere Plasmasphere electrodynamics (CTIPe) physic based numerical code [1,2] and compared with observations of the Total Electron Content (TEC) derived from Global Navigation Satellite System (GNSS) measurements [3] and ionosonde measurements. Travelling Ionsopheric Disturbances (TIDs) are the signatures of atmospheric surges causing neutral composition changes, and are associated with strong TEC enhancement as the one observed during the 20th November 2003 storm. CTIPe reproduce the strong perturbations in Joule heating and neutral winds over Europe, located at exactly the location of the source region of TIDs. Even the signatures of atmospheric surges with similar characteristics of the observed TIDs are reproduced by CTIPe. Joule heating initiated meridional winds [4] and the associated storm-time neutral circulation seem to be the main driver of the ionospheric perturbations observed over Europe. However, comparisons with GNSS measurements show that the TEC enhancement (Fig.1) and TEC rate over Europe are underestimated by the CTIPe model. Nevertheless, the results provide valuable information on the physics of the processes that operate in the ionosphere/thermosphere during this extreme geomagnetic storm, and they may be improved by using better estimates of the thermosphere/ionosphere forcing during the storm.

Item URL in elib:https://elib.dlr.de/104591/
Document Type:Conference or Workshop Item (Poster)
Title:CTIPe physics based model during the extreme geomagnetic storm on the 20th November 2003
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Fernandez Gomez, IsabelIsabel.FernandezGomez (at) dlr.deUNSPECIFIED
Borries, ClaudiaClaudia.Borries (at) dlr.deUNSPECIFIED
Codrescu, M. V.SWPC, NOAA, BoulderUNSPECIFIED
Date:28 April 2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:CTIPe, Ionosphere, Storm, GNSS, TEC
Event Title:SWW 2016
Event Location:Broomfield, CO, USA
Event Type:Workshop
Event Dates:25-29 Apr 2015
Organizer:Space Weather Prediction Center (SWPC) - NOAA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben Ionosphäre
Location: Neustrelitz
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Fernandez Gomez, PhD. Isabel
Deposited On:14 Jun 2016 15:44
Last Modified:14 Jun 2016 15:44

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.