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Browsing Публикации сотрудников КФУ Scopus by Author "Jacobi C."

Now showing items 1-18 of 18

Amplitude modulation of the semidiurnal tide based on MLT wind measurements with a European/Siberian meteor radar network in October – December 2017

Merzlyakov E.; Solovyova T.; Yudakov A.; Korotyshkin D.; Jacobi C.; Lilienthal F. (2020)

© 2020 COSPAR 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 ...
Annual and semiannual harmonics of wind in the Northern stratosphere, mesosphere, and lower thermosphere

Guryanov V.; Jacobi C.; Eliseev A.; Fahrutdinova A. (2015)

© 2015 COSPAR. Published by Elsevier Ltd. All rights reserved. Based on the UK MetOffice gridded analysis in the altitudes from the tropopause to the mesopause of the Northern Hemisphere and the meteor radar observations ...
Climatology of the semidiurnal tide at 52-56°N from ground-based radar wind measurements 1985-1995

Jacobi C.; Portnyagin Y.; Solovjova T.; Hoffmann P.; Singer W.; Fahrutdinova A.; Ishmuratov R.; Beard A.; Mitchell N.; Muller H.; Schminder R.; Kürschner D.; Manson A.; Meek C. (1999)

Long-term wind measurements carried out at 6 northern midlatitude sites (Saskatoon, Sheffield, Juliusruh, Collm, Obninsk, Kazan) are investigated to establish a climatology of the semidiurnal tide in the mesopause region ...
Global-scale tidal variability during the PSMOS campaign of June-August 1999: Interaction with planetary waves

Pancheva D.; Merzlyakov E.; Mitchell N.; Portnyagin Y.; Manson A.; Jacobi C.; Meek C.; Luo Y.; Clark R.; Hocking W.; MacDougall J.; Muller H.; Kürschner D.; Jones G.; Vincent R.; Reid I.; Singer W.; Igarashi K.; Fraser G.; Fahrutdinova A.; Stepanov A.; Poole L.; Malinga S.; Kashcheyev B.; Oleynikov A. (2002)

During the PSMOS Global-scale tidal variability experiment campaign of June 1-August 31, 1999, a network of radars made measurements of winds, waves and tides in the mesosphere/lower-thermosphere region over a wide range ...
Influence of geomagnetic disturbances on mean winds and tides in the mesosphere/lower thermosphere at midlatitudes

Jacobi C.; Lilienthal F.; Korotyshkin D.; Merzlyakov E.; Stober G. (2021)

Observations of upper mesosphere/lower thermosphere (MLT) wind have been performed at Collm (51.3N, 13.0E) and Kazan (56N, 49E), using two SKiYMET all-sky meteor radars with similar configuration. Daily vertical profiles ...
Long-period meteor radar temperature variations over Collm (51°N, 13°E) and Kazan (56°N, 49°E)

Merzlyakov E.; Korotyshkin D.; Jacobi C.; Lilienthal F. (2021)

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. ...
Longitude variability of the solar semidiurnal tide in the lower thermosphere through assimilation of ground- and space-based wind measurements

Cierpik K.; Forbes J.; Miyahara S.; Miyoshi Y.; Fahmtdinova A.; Jacobi C.; Manson A.; Meek C.; Mitchell N.; Portnyagin Y. (2003)

Wind measurements from the Upper Atmosphere Research Satellite (UARS) and model output from the Middle Atmosphere General Circulation Model (GCM) at Kyushu University are used to investigate the nature of nonmigrating ...
Longitudinal MLT wind structure at higher mid-latitudes as seen by meteor radars at central and Eastern Europe (13°E/49°E)

Korotyshkin D.; Merzlyakov E.; Jacobi C.; Lilienthal F.; Wu Q. (2019)

© 2019 COSPAR 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 ...
Longitudinal variability of the zonal and meridional circulation and the intensity of planetary waves in the lower and middle atmosphere

Fahrutdinova A.; Guryanov V.; Korotyshkin D.; Manson A.; Meek C.; Jacobi C.; Kürschner D. (2003)

Mesosphere/lower thermosphere wind data sets from three midlatitude sites and UKMO assimilated wind data in the height range 0-55 km at 55°N were used to show the altitudinal and longitudinal variability of mean winds and ...
Mesopause region semidiurnal tide over Europe as seen from ground-based wind measurements

Jacobi C.; Portnyagin Y.; Solovjova T.; Hoffmann P.; Singer W.; Kashcheyev B.; Oleynikov A.; Fahrutdinova A.; Solntsev R.; Beard A.; Mitchell N.; Muller H.; Schminder R.; Kürschner D. (1999)

Wind measurements carried out at 6 European sites are investigated to set up a climatology of the semidiurnal tide in the mesopause region over Europe for the latitudinal range between 50°N and 56°N. Intercomparison of ...
Mesosphere/lower thermosphere prevailing wind model

Portnyagin Y.; Solovjova T.; Merzlyakov E.; Forbes J.; Palo S.; Ortland D.; Hocking W.; MacDougall J.; Thayaparan T.; Manson A.; Meek C.; Hoffmann P.; Singer W.; Mitchell N.; Pancheva D.; Igarashi K.; Murayama Y.; Jacobi C.; Kuerschner D.; Fahrutdinova A.; Korotyshkin D.; Clark R.; Taylor M.; Franke S.; Fritts D.; Tsuda T.; Nakamura T.; Gurubaran S.; Rajaram R.; Vincent R.; Kovalam S.; Batista P.; Poole G.; Malinga S.; Fraser G.; Murphy D.; Riggin D.; Aso T.; Tsutsumi M. (2004)

The mesosphere/lower thermosphere (MLT) wind data from the 46 ground-based (GB) MF and meteor radar (MR) stations, located at the different latitudes over the globe, and the space-based (SB) HRDI data were used for ...
Mesosphere/lower thermosphere winds measured with nearby SKiYMET meteor radars at Collm and Juliusruh, and comparison with Kazan winds

Jacobi C.; Lilienthal F.; Stober G.; Korotyshkin D.; Merzlyakov E. (2019)

© 2019 URSI Landesausschuss in der Bundesrepublik Deutschland e.V. Mesosphere/lower thermosphere winds have been measured by VHF meteor radars at Collm (51.3°N, 13.0°E) and Juliusruh (54.6°N, 13.4°E) for more than a decade. ...
On the longitudinal structure of the transient day-to-day variation of the semidiurnal tide in the mid-latitude lower thermosphere - I. Winter season

Merzlyakov E.; Portnyagin Y.; Jacobi C.; Mitchell N.; Muller H.; Manson A.; Fachrutdinova A.; Singer W.; Hoffmann P. (2001)

The longitudinal structure of the day-to-day variations of semidiurnal tide amplitudes is analysed based on coordinated mesosphere/lower thermosphere wind measurements at several stations during three winter campaigns. ...
Planetary wave activity and rotational effects in the mid-latitudes of the lower and middle atmosphere (0-100KM)

Fahrutdinova A.; Guryanov V.; Korotyshkin D.; Manson A.; Meek C.; Jacobi C.; Kürschner D. (2003)

Investigation of the wind regime during solstices (1998-1999) allowed the presentation of the vertical structure of the intensity of planetary waves in the zonal and meridional wind. The seasonal dependence of the vertical ...
Semi-empirical model of middle atmosphere wind from the ground to the lower thermosphere

Jacobi C.; Fröhlich K.; Portnyagin Y.; Merzlyakov E.; Solovjova T.; Makarov N.; Rees D.; Fahrutdinova A.; Guryanov V.; Fedorov D.; Korotyshkin D.; Forbes J.; Pogoreltsev A.; Kürschner D. (2009)

During recent years, special attention has been paid to understanding the background circulation of the middle atmosphere. Particularly in the mesosphere/lower thermosphere (MLT) region, this has involved including data ...
Some features of the day-to-day MLT wind variability in winter 2017–2018 as seen with a European/Siberian meteor radar network

Merzlyakov E.; Solovyova T.; Yudakov A.; Korotyshkin D.; Jacobi C.; Lilienthal F. (2020)

© 2019 COSPAR 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) ...
Some results of S-transform analysis of the transient planetary-scale wind oscillations in the lower thermosphere

Portnyagin Y.; Merzlyakov E.; Jacobi C.; Mitchell N.; Muller H.; Manson A.; Singer W.; Hoffmann P.; Fachrutdinova A. (1999)

Technique appropriate to the analysis of lower thermospheric wind data recorded by global-scale networks of ground-based instruments are discussed. The S-transform technique is shown to be effective in the analysis of the ...
Variability of the quasi-2-day wave observed in the MLT region during the PSMOS campaign of June-August 1999

Pancheva D.; Mitchell N.; Manson A.; Meek C.; Jacobi C.; Portnyagin Y.; Merzlyakov E.; Hocking W.; MacDougall J.; Singer W.; Igarashi K.; Clark R.; Riggin D.; Franke S.; Kürschner D.; Fahrutdinova A.; Stepanov A.; Kashcheyev B.; Oleynikov A.; Muller H. (2004)

A network of 15 northern hemisphere radars has been used to measure horizontal winds in the mesosphere and lower thermosphere during the PSMOS campaign of Summer 1999. The radars are sited at latitudes ranging from 21°N ...

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