An Investigation of the Influence on Daytime and Evening Vertical ExB Drifts on the Evolution of the Nighttime Equatorial Ionization Anomaly using SAMI3

Details An Investigation of the Influence on Daytime and Evening Vertical ExB Drifts on the Evolution of the Nighttime Equatorial Ionization Anomaly using SAMI3 An Investigation of the Influence on Daytime and Evening Vertical ExB Drifts on the Evolution of the Nighttime Equatorial Ionization Anomaly using SAMI3

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa11a1484m&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SA11A-1484

Physics

2415 Equatorial Ionosphere, 2427 Ionosphere/Atmosphere Interactions (0335), 2437 Ionospheric Dynamics, 2447 Modeling And Forecasting

Scientific paper

It has recently been suggested that E region dynamo winds that enhance daytime vertical ExB plasma drifts are the mechanism by which tides generated in the lower atmosphere couple with the F region ionosphere. But it is well known that nighttime ionospheric densities are significantly affected by the pre-reversal enhancement of the ExB drifts, which is primarily driven by the F region dynamo. In this work we investigate the relative contributions of the daytime and evening vertical ExB drifts to the nighttime plasma distributions in the low-latitude F region ionosphere under both solar minimum and maximum conditions. We perform simulation runs using the NRL SAMI3 (Sami3 is Also a Model of the Ionosphere), a three-dimensional physics-based model of the ionosphere, and modulate the vertical velocities of the daytime and prereversal enhancement of the plasma drifts to investigate the effects on the density and separation of the Equatorial Ionization Anomaly (EIA) crests. The role of F region neutral winds is also explored. We discuss our results in light of recent observations of longitudinal variations in the EIA attributed to non-migrating tides generated in the troposphere.

Affiliated with

Also associated with

No associations

Rating

An Investigation of the Influence on Daytime and Evening Vertical ExB Drifts on the Evolution of the Nighttime Equatorial Ionization Anomaly using SAMI3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with An Investigation of the Influence on Daytime and Evening Vertical ExB Drifts on the Evolution of the Nighttime Equatorial Ionization Anomaly using SAMI3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Investigation of the Influence on Daytime and Evening Vertical ExB Drifts on the Evolution of the Nighttime Equatorial Ionization Anomaly using SAMI3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1243585