Perturbation in the stratosphere due to intense geomagnetic storms: Study Cases.

A.M GULISANO; S. DASSO; O. ARESO; M. PEREIRA

Davos

Conferencia; SCAR/IASC Open Science Conference; 2018

We analyzed balloon sounding data gathered at the Argentinean Marambio Antarctic station from 1998 to2016 (inclusive) by the National Meteorological Service of Argentina, in order to study the atmospheric profileswith height of temperature and pressure variables. During the study, and taking into account seasonality, wehave found the associated climatology at Marambio station in order to compare the same profiles during 5cases of intense geomagnetic storms (GS) where the balloon measurements where available. We compute thetemperature anomalies for the day of the GS, and 14 days after the event at different height levels. Theknowledge of the deviation of the seasonal profile during a geomagnetic storm will help to assess the possibledeviation from the expected cosmic ray flux at the station during these GS events. The atmospheric profile withheight is necessary to perform the Monte Carlo simulations of secondary cosmic rays showers, so this kind ofstudy will help to improve them.