| Full text | |
| Author(s): |
Guarnieri, Fernando L.
[1]
;
Tsurutani, Bruce T.
[2]
;
Vieira, Luis E. A.
[1]
;
Hajra, Rajkumar
[3]
;
Echer, Ezequiel
[1]
;
Mannucci, Anthony J.
[2]
;
Gonzalez, Walter D.
[1]
Total Authors: 7
|
| Affiliation: | [1] INPE, Sao Jose Dos Campos, SP - Brazil
[2] CALTECH, Jet Prop Lab, Pasadena, CA - USA
[3] CNRS, Lab Phys & Chim Environm & Espace, Orleans - France
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Nonlinear Processes in Geophysics; v. 25, n. 1, p. 67-76, JAN 31 2018. |
| Web of Science Citations: | 4 |
| Abstract | |
The purpose of this study is to present a wavelet interactive filtering and reconstruction technique and apply this to the solar wind magnetic field components detected at the L1 Lagrange point similar to 0.01AU upstream of the Earth. These filtered interplanetary magnetic field (IMF) data are fed into a model to calculate a time series which we call AE{*}. This model was adjusted assuming that magnetic reconnection associated with southward-directed IMF B-z is the main mechanism transferring energy into the magnetosphere. The calculated AE{*} was compared to the observed AE (auroral electrojet) index using cross-correlation analysis. The results show correlations as high as 0.90. Empirical removal of the high-frequency, short-wavelength Alfvenic component in the IMF by wavelet decomposition is shown to dramatically improve the correlation between AE{*} and the observed AE index. It is envisioned that this AE{*} can be used as the main input for a model to forecast relativistic electrons in the Earth's outer radiation belts, which are delayed by similar to 1 to 2 days from intense AE events. (AU) | |
| FAPESP's process: | 04/14784-4 - Study and forecasting of occurrence of storms, substorms and HILDCAAS |
| Grantee: | Fernando Luis Guarnieri |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |