Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Friederike Lilienthal"'
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 7 (2020)
Implementing a nonlinear gravity wave (GW) parameterization into a mechanistic middle and upper atmosphere model, which extends to the lower thermosphere (160 km), we study the response of the atmosphere in terms of the circulation patterns, temperat
Externí odkaz:
https://doaj.org/article/efea5d0d2788434eae0b5e3cf8376852
Publikováno v:
Advances in Space Research. 67:3250-3259
We have estimated temperatures from meteor radar measurements using the gradient method and the full width at half maximum method over Kazan (56°N 49°E) and Collm (51°N, 13°E). The time series cover the period 2016–2019. The temperature gradien
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3875c6a9b0573d124dcf7acf88af39b1
https://doi.org/10.1016/j.asr.2021.02.014
https://doi.org/10.1016/j.asr.2021.02.014
Autor:
Ch. Jacobi, D. Korotyshkin, Friederike Lilienthal, E. G. Merzlyakov, A. Yudakov, T. Solovyova
Publikováno v:
Advances in Space Research. 66:631-645
We present results on temporal and longitudinal modulations of semidiurnal tide amplitudes in the mesosphere and lower thermosphere winds. The wind data were obtained during October – December 2017 when six meteor radars operated simultaneously. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92b91a05dc58cb704b8c52977c31a22d
https://doi.org/10.1016/j.asr.2020.04.036
https://doi.org/10.1016/j.asr.2020.04.036
Publikováno v:
Annales Geophysicae, Vol 38, Pp 527-544 (2020)
We used a nonlinear mechanistic global circulation model to analyze the migrating quarterdiurnal tide (QDT) in the middle atmosphere with focus on its possible forcing mechanisms: the absorption of solar radiation by ozone and water vapor, nonlinear
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aecd7a5c8239293ed0cdcdb4b382232d
https://doi.org/10.5194/angeo-38-527-2020
https://doi.org/10.5194/angeo-38-527-2020
Autor:
Friederike Lilienthal, T. Solovyova, A. Yudakov, Ch. Jacobi, D. Korotyshkin, E. G. Merzlyakov
Publikováno v:
Advances in Space Research. 65:1529-1543
We present results of wind measurements near the mesopause carried out with meteor radars (MRs) at Collm (51°N, 13°E), Obninsk (55°N, 37°E), Kazan (56°N, 49°E), Angarsk (52°N, 104°E) and Anadyr (65°N, 178°E) from October 1, 2017 till March
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa3ae0c0f975c96cf9c31b351f30f86d
https://doi.org/10.1016/j.asr.2019.12.018
https://doi.org/10.1016/j.asr.2019.12.018
Publikováno v:
Annales Geophysicae, Vol 37, Pp 943-953 (2019)
We investigate the forcing mechanisms of the terdiurnal solar tide in the middle atmosphere using a mechanistic global circulation model. In order to quantify their individual contributions, we perform several model experiments and separate each forc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e1decb7650633a21541aaeb1ded5e5f
https://doi.org/10.5194/angeo-37-943-2019
https://doi.org/10.5194/angeo-37-943-2019
Publikováno v:
Advances in Space Research. 63:3154-3166
The mid-latitude mesosphere and lower thermosphere (MLT) wind speeds measured by two SKiYMET meteor radars (MRs) at Collm (51°N, 13°E) and Kazan (56°N, 49°E) during 2016–2017 were analyzed to study longitudinal wind structures. The differences
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::293f34cfcda4514ffd5002203f4c6eee
https://doi.org/10.1016/j.asr.2019.01.036
https://doi.org/10.1016/j.asr.2019.01.036
Publikováno v:
Annales Geophysicae, Vol 37, Pp 273-288 (2019)
Annales Geophysicae
Annales Geophysicae
The GPS radio occultation (RO) technique is used to study sporadic E (Es) layer plasma irregularities of the Earth's ionosphere on a global scale using GPS signal-to-noise ratio (SNR) profiles from the COSMIC/FORMOSAT-3 satellite. The maximum deviati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::884396a4adc6ebbd6ce0dbf1870f1f5d
https://www.ann-geophys.net/37/273/2019/angeo-37-273-2019.pdf
https://www.ann-geophys.net/37/273/2019/angeo-37-273-2019.pdf
Observations of upper mesosphere/lower thermosphere (MLT) wind have been performed at Collm (51°N, 13°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 a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::579f37fbe8c0de40e00c3abd26dcb018
https://doi.org/10.5194/egusphere-egu21-3163
https://doi.org/10.5194/egusphere-egu21-3163
Autor:
Kanykei Kandieva, Christina Arras, Friederike Lilienthal, Christoph Jacobi, Sahar Sobhkhiz-Miandehi, Yosuke Yamazaki
Publikováno v:
Proceedings
We analyze sporadic E (ES) occurrence rates (OR) obtained from ionospheric radio occultation measurements by the FORMOSAT-3/COSMIC constellation. Maximum OR are seen at 95 - 105 km altitude at lower midlatitudes. Midlatitude ES are mainly due to wind
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b7fa3ee0e8d4ab9da7b7bdedf8e59d4
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5009748
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5009748