Advances in Radio Science
Advances in Radio Science
ARS
Articles | Volume 15
Articles | Volume 15
https://doi.org/10.5194/ars-15-199-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/ars-15-199-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 15
21 Sep 2017
 | 21 Sep 2017

El Niño influence on the mesosphere/lower thermosphere circulation at midlatitudes as seen by a VHF meteor radar at Collm (51.3 ° N, 13 ° E)

Christoph Jacobi, Tatiana Ermakova, Daniel Mewes, and Alexander I. Pogoreltsev

Related authors

Non-zonal gravity wave forcing of the Northern Hemisphere winter circulation and effects on middle atmosphere dynamics
Sina Mehrdad, Sajedeh Marjani, Dörthe Handorf, and Christoph Jacobi
EGUsphere, https://doi.org/10.5194/egusphere-2025-3005,https://doi.org/10.5194/egusphere-2025-3005, 2025
This preprint is open for discussion and under review for Weather and Climate Dynamics (WCD).
Short summary
Observing mesoscale dynamics with multistatic specular meteor radars: first climatology of momentum flux, horizontal divergence and relative vorticity over central Europe
J. Federico Conte, Jorge L. Chau, Toralf Renkwitz, Ralph Latteck, Masaki Tsutsumi, Christoph Jacobi, Njål Gulbrandsen, and Satonori Nozawa
EGUsphere, https://doi.org/10.5194/egusphere-2025-1996,https://doi.org/10.5194/egusphere-2025-1996, 2025
This preprint is open for discussion and under review for Annales Geophysicae (ANGEO).
Short summary
Long-term changes and trends of mesosphere/lower thermosphere gravity waves over Collm, Germany
Christoph Jacobi, Khalil Karami, Ales Kuchar, Manfred Ern, Toralf Renkwitz, Ralph Latteck, and Jorge L. Chau
Adv. Radio Sci., 23, 21–31, https://doi.org/10.5194/ars-23-21-2025,https://doi.org/10.5194/ars-23-21-2025, 2025
Short summary
Arctic climate response to European radiative forcing: a deep learning study on circulation pattern changes
Sina Mehrdad, Dörthe Handorf, Ines Höschel, Khalil Karami, Johannes Quaas, Sudhakar Dipu, and Christoph Jacobi
Weather Clim. Dynam., 5, 1223–1268, https://doi.org/10.5194/wcd-5-1223-2024,https://doi.org/10.5194/wcd-5-1223-2024, 2024
Short summary
TIMED Doppler Interferometer Measurements of Neutral Winds at the Mesosphere and Lower Thermosphere and Comparison to Meteor Radar Winds
Arthur Gauthier, Claudia Borries, Alexander Kozlovsky, Diego Janches, Peter Brown, Denis Vida, Christoph Jacobi, Damian Murphy, Masaki Tsutsumi, Njål Gulbrandsen, Satonori Nozawa, Mark Lester, Johan Kero, Nicholas Mitchell, Tracy Moffat-Griffin, and Gunter Stober
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2024-13,https://doi.org/10.5194/angeo-2024-13, 2024
Revised manuscript accepted for ANGEO
Short summary
More articles (45)

Cited articles

Calvo, N., Giorgetta, M. A., Garcia-Herrera, R., and Manzini, E.: Nonlinearity of the combined warm ENSO and QBO effects on the Northern Hemisphere polar vortex in MAECHAM5 simulations, J. Geophys. Res., 114, D13109, https://doi.org/10.1029/2008JD011445, 2009.
Camp, C. D. and Tung, K.-K.: Stratospheric polar warming by ENSO in winter: A statistical study, Geophys. Res. Lett., 34, L04809, https://doi.org/10.1029/2006GL028521, 2007. 
Fischer, A. M., Shindell, D. T., Winter, B., Bourqui, M. S., Faluvegi, G., Rozanov, E., Schraner, M., and Brönnimann, S.: Stratospheric winter climate response to ENSO in three chemistry-climate models, Geophys. Res. Lett., 35, L13819, https://doi.org/10.1029/2008GL034289, 2008.
Fleming, E. L., Chandra, S., Barnett, J. J., and Corney, M: Zonal mean temperature, pressure, zonal wind and geopotential height as function of latitude, Adv. Space. Res., 10, 11–59, 1990.
Fomichev, V. I. and Shved, G. M.: Parameterization of the radiative flux divergence in the 9.6 µm O3 band, J. Atmos. Terr. Phys., 47, 1037–1049, https://doi.org/10.1016/0021-9169(85)90021-2, 1985.
More articles (26)
Download
Short summary
There is continuous interest in coupling processes between the lower and middle atmosphere. Here we analyse midlatitude winds measured by radar at 82–97 km and find that especially in February they are positively correlated with El Niño. The signal is strong for the upper altitudes accessible to the radar, but weakens below. The observations can be qualitatively reproduced by numerical experiments using a mechanistic global circulation model.
Read more
Share