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Contents 1 Introduction 2 Chairs and Presenters 2.1 Presenters 3 Time and Location 4 Presentation Materials

Introduction

Impact of electric fields during ionospheric storms

Magnetic storms can cause very large disturbances in the global ionosphere. The IMF is strongly southward during the main phase of intense storms, and the interplanetary electric field can penetrate to the low-latitude ionosphere. In the equatorial ionosphere, enhanced electric fields move the F-region plasma upward, creating extremely deep depletions of the plasma density over the a large latitudinal range. The ionospheric plasma density is significantly increased at lower midlatitudes on the dayside and near dusk, producing the positive storm phase. Large density enhancements occur in the dusk sector, and an enhanced TEC band extends from the low latitudes to polar cap. Although significant progress has been achieved in these areas, a number of outstanding problems have not been fully understood.

In this workshop, we will discuss the following problems. What are the lifetimes of penetration and dynamo electric fields during the different phases of a storm on the day and nightside? What is the relative importance of penetration electric fields and disturbance dynamo effects in the generation of global ionospheric plasma density disturbances? How can the relative contributions from electric fields and neutral disturbances to ionospheric storms be separated?

Chairs and Presenters

Presenters

• J Foster (MIT): Conjugacy of ionospheric disturbances: what it tells us about stormtime processes,
• M Kelley (Cornell University): Suppression of a major SED event by a reversal of the y-component of the interplanetary electric field,
• S Sazykin (Rice University) : Modeling penetration electric fields with the Rice Convection Model,
• N Maruyama (NOAA): Relative importance of penetration and disturbance dynamo using a self consistently coupled RCM-CTIPe model,
• X Pi (JPL/NASA): Assimilative modeling of Ionospheric Disturbances Caused by Electric Field Perturbations,
• J Huba (NRL):

Storm simulation using a coupled SAMI3/LFM model,

• D Anderson (NOAA): Relating Interplanetary-induced Electric Field values with Low Latitude Electric Field values in the Peruvian, Philippine and Indian sectors under promptly penetrating electric field conditions,
• C-S Huang (MIT): Penetration electric fields in the evening sector and their effects on the generation of equatorial spread F.

Time and Location

Wednesday, 13:00 - 15:00 in Sunset

Presentation Materials

Images, power point, pdf

• slide presentation by J. Huba

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