Open AccessCoordinated incoherent scatter radar study of the January 1997 storm
Author(s) -
Buonsanto M. J.,
González S. A.,
Lu G.,
Reinisch B. W.,
Thayer J. P.
Publication year - 1999
Publication title -
journal of geophysical research: space physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/1999ja900358
Subject(s) - millstone hill , ionosphere , incoherent scatter , storm , thermosphere , radar , atmospheric sciences , f region , environmental science , latitude , electric field , geomagnetic storm , geology , geophysics , meteorology , physics , geodesy , plasma , telecommunications , quantum mechanics , computer science , solar wind
We describe many important features of the ionospheric F region as observed by the Sondrestrom, Millstone Hill, and Arecibo incoherent scatter radars (ISRs) and the Millstone Hill and Ramey Digisondes during January 6–10, 1997, with emphasis on the January 10, 1997 storm. Coordinated analysis of the data provides evidence for traveling atmospheric disturbances (TADs) and for two likely electric field penetration events linking these stations. Large and rapid changes in hmF 2 were seen at Arecibo and nearby Ramey which are related to the TADs and penetrating electric fields. Results are compared with simulations by the thermosphere‐ionosphere electrodynamics general circulation model (TIEGCM), which utilizes high‐latitude inputs given by the assimilative mapping of ionospheric electrodynamics (AMIE) technique. An important result of this study is that the TIEGCM is able to predict TADs similar to those observed. Exceptional features observed during this storm at Millstone Hill are a very large nighttime T e enhancement on January 10 and a larger decrease in NmF 2 than predicted by the TIEGCM throughout the storm period. The latter appears to be related to an underestimation of the neutral temperature by the model.