Influence of geomagnetic disturbances on mean winds and tides in the mesosphere/lower thermosphere at midlatitudes
Abstract. ∘ N, 13.0∘ E) and Kazan (56∘ N, 49∘ E), using two SKiYMET all-sky meteor radars with similar configuration. Daily vertical profiles of mean winds and tidal amplitudes have been constructed from hourly horizontal winds. We analyse the response of mean winds and tidal amplitudes to geomagnetic disturbances. To this end, we compare winds and amplitudes for very quiet (Ap ≤ 5) and unsettled/disturbed (Ap ≥ 20) geomagnetic conditions. Zonal winds in both the mesosphere and lower thermosphere are weaker during disturbed conditions for both summer and winter. The summer equatorward meridional wind jet is weaker for disturbed geomagnetic conditions. Tendencies for geomagnetic effects on mean winds over Collm and Kazan qualitatively agree during most of the year. For the diurnal tide, amplitudes in summer are smaller in the mesosphere and greater in the lower thermosphere, but no clear tendency is seen for winter. Semidiurnal tidal amplitudes increase during geomagnetic active days in summer and winter. Terdiurnal amplitudes are slightly reduced in the mesosphere during disturbed days, but no clear effect is visible for the lower thermosphere. Overall, while there is a noticeable effect of geomagnetic variability on the mean wind, the effect on tidal amplitudes, except for the semidiurnal tide, is relatively small and partly different over Collm and Kazan.
- Location
-
Deutsche Nationalbibliothek Frankfurt am Main
- Extent
-
Online-Ressource
- Language
-
Englisch
- Bibliographic citation
-
Influence of geomagnetic disturbances on mean winds and tides in the mesosphere/lower thermosphere at midlatitudes ; volume:19 ; year:2021 ; pages:185-193 ; extent:9
Advances in radio science ; 19 (2021), 185-193 (gesamt 9)
- Creator
- DOI
-
10.5194/ars-19-185-2021
- URN
-
urn:nbn:de:101:1-2021122304283288380198
- Rights
-
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
-
15.08.2025, 7:26 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Jacobi, Christoph
- Lilienthal, Friederike
- Korotyshkin, Dmitry
- Merzlyakov, Evgeny
- Stober, Gunter
Other Objects (12)
Long-term trends and decadal variability of upper mesosphere/lower thermosphere gravity waves at midlatitudes
High-time resolution analysis of meridional tides in the upper mesosphere and lower thermosphere at mid-latitudes measured by the Falkland Islands SuperDARN radar
High-time-resolution analysis of meridional tides in the upper mesosphere and lower thermosphere at mid-latitudes measured by the Falkland Islands SuperDARN radar
Effects of Nonmigrating Diurnal Tides on the Na Layer in the Mesosphere and Lower Thermosphere
Observations of lunar tides in the mesosphere and lower thermosphere at Arctic and middle latitudes
Monthly mean climatology of the prevailing winds and tides in the Arctic mesosphere/lower thermosphere
Seasonal variability of atmospheric tides in the mesosphere and lower thermosphere: meteor radar data and simulations
Development of Optical Mesosphere Thermosphere Imagers (OMTI)
New perspectives on thermosphere tides: 2. Penetration to the upper thermosphere
Seasonal evolution of winds, atmospheric tides and Reynolds stress components in the Southern hemisphere mesosphere/lower thermosphere in 2019
Interhemispheric differences of mesosphere/lower thermosphere winds and tides investigated from three whole atmosphere models and meteor radar observations
Climatology of mesosphere and lower thermosphere diurnal tides over Jicamarca (12 $$^\circ$$ ∘ S, 77 $$^\circ$$ ∘ W): observations and simulations
Long-term trends and decadal variability of upper mesosphere/lower thermosphere gravity waves at midlatitudes
High-time resolution analysis of meridional tides in the upper mesosphere and lower thermosphere at mid-latitudes measured by the Falkland Islands SuperDARN radar
High-time-resolution analysis of meridional tides in the upper mesosphere and lower thermosphere at mid-latitudes measured by the Falkland Islands SuperDARN radar
Effects of Nonmigrating Diurnal Tides on the Na Layer in the Mesosphere and Lower Thermosphere
Observations of lunar tides in the mesosphere and lower thermosphere at Arctic and middle latitudes
Monthly mean climatology of the prevailing winds and tides in the Arctic mesosphere/lower thermosphere
Seasonal variability of atmospheric tides in the mesosphere and lower thermosphere: meteor radar data and simulations
Development of Optical Mesosphere Thermosphere Imagers (OMTI)
New perspectives on thermosphere tides: 2. Penetration to the upper thermosphere
Seasonal evolution of winds, atmospheric tides and Reynolds stress components in the Southern hemisphere mesosphere/lower thermosphere in 2019
Interhemispheric differences of mesosphere/lower thermosphere winds and tides investigated from three whole atmosphere models and meteor radar observations
Climatology of mesosphere and lower thermosphere diurnal tides over Jicamarca (12 $$^\circ$$ ∘ S, 77 $$^\circ$$ ∘ W): observations and simulations
Long-term trends and decadal variability of upper mesosphere/lower thermosphere gravity waves at midlatitudes
High-time resolution analysis of meridional tides in the upper mesosphere and lower thermosphere at mid-latitudes measured by the Falkland Islands SuperDARN radar
High-time-resolution analysis of meridional tides in the upper mesosphere and lower thermosphere at mid-latitudes measured by the Falkland Islands SuperDARN radar
Effects of Nonmigrating Diurnal Tides on the Na Layer in the Mesosphere and Lower Thermosphere
Observations of lunar tides in the mesosphere and lower thermosphere at Arctic and middle latitudes
Monthly mean climatology of the prevailing winds and tides in the Arctic mesosphere/lower thermosphere
Seasonal variability of atmospheric tides in the mesosphere and lower thermosphere: meteor radar data and simulations
Development of Optical Mesosphere Thermosphere Imagers (OMTI)
New perspectives on thermosphere tides: 2. Penetration to the upper thermosphere
Seasonal evolution of winds, atmospheric tides and Reynolds stress components in the Southern hemisphere mesosphere/lower thermosphere in 2019
Interhemispheric differences of mesosphere/lower thermosphere winds and tides investigated from three whole atmosphere models and meteor radar observations