Quarterdiurnal signature in sporadic E occurrence rates and comparison with neutral wind shear

Jacobi, Christoph; Arras, Christina; Geißler, Christoph; Lilienthal, Friederike

doi:https://doi.org/10.5194/angeo-37-273-2019

Articles | Volume 37, issue 3

https://doi.org/10.5194/angeo-37-273-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Vertical coupling in the atmosphere–ionosphere system

https://doi.org/10.5194/angeo-37-273-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 37, issue 3

Regular paper

|

06 May 2019

Regular paper |

| 06 May 2019

Quarterdiurnal signature in sporadic E occurrence rates and comparison with neutral wind shear

Christoph Jacobi, Christina Arras, Christoph Geißler, and Friederike Lilienthal

Data sets

Radio occultation data UCAR http://cdaac-www.cosmic.ucar.edu/cdaac/products.html

Short summary

Sporadic E (Es) layers in the Earth's ionosphere are produced by ion convergence due to vertical wind shear in the presence of a horizontal component of the Earth's magnetic field. We present analyses of the 6 h tidal signatures in ES occurrence rates derived from GPS radio observations. Times of maxima in ES agree well with those of negative wind shear obtained from radar observation. The global distribution of ES amplitudes agrees with wind shear amplitudes from numerical modeling.