Articles | Volume 37, issue 5
https://doi.org/10.5194/angeo-37-851-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-37-851-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Climatologies and long-term changes in mesospheric wind and wave measurements based on radar observations at high and mid latitudes
Sven Wilhelm
CORRESPONDING AUTHOR
Leibniz Institute of Atmospheric Physics at the University of Rostock, Kühlungsborn, Germany
Gunter Stober
Leibniz Institute of Atmospheric Physics at the University of Rostock, Kühlungsborn, Germany
Institute of Applied Physics, University of Bern, Bern, Switzerland
Oeschger Centre for Climate Change Research, University of Bern, Switzerland
Peter Brown
Department of Physics and Astronomy, Western University, London, Ontario, Canada
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Ales Kuchar, Gunter Stober, Dimitry Pokhotelov, Huixin Liu, Han-Li Liu, Manfred Ern, Damian Murphy, Diego Janches, Tracy Moffat-Griffin, Nicholas Mitchell, and Christoph Jacobi
EGUsphere, https://doi.org/10.5194/egusphere-2025-2827, https://doi.org/10.5194/egusphere-2025-2827, 2025
This preprint is open for discussion and under review for Annales Geophysicae (ANGEO).
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We studied how the healing of the Antarctic ozone layer is affecting winds high above the South Pole. Using ground-based radar, satellite data, and computer models, we found that winds in the upper atmosphere have become stronger over the past two decades. These changes appear to be linked to shifts in the lower atmosphere caused by ozone recovery. Our results show that human efforts to repair the ozone layer are also influencing climate patterns far above Earth’s surface.
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., 43, 427–440, https://doi.org/10.5194/angeo-43-427-2025, https://doi.org/10.5194/angeo-43-427-2025, 2025
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This study focuses on a TIMED Doppler Interferometer (TIDI)–meteor radar (MR) comparison of zonal and meridional winds and their dependence on local time and latitude. The correlation calculation between TIDI wind measurements and MR winds shows good agreement. A TIDI–MR seasonal comparison and analysis of the altitude–latitude dependence for winds are performed. TIDI reproduces the mean circulation well when compared with MRs and may be a useful lower boundary for general circulation models.
Florian Günzkofer, Gunter Stober, Johan Kero, David R. Themens, Anders Tjulin, Njål Gulbrandsen, Masaki Tsutsumi, and Claudia Borries
Ann. Geophys., 43, 331–348, https://doi.org/10.5194/angeo-43-331-2025, https://doi.org/10.5194/angeo-43-331-2025, 2025
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The Earth’s magnetic field is not closed at high latitudes. Electrically charged particles can penetrate the Earth’s atmosphere, deposit their energy, and heat the local atmosphere–ionosphere. This presumably causes an upwelling of the neutral atmosphere, which affects the atmosphere–ionosphere coupling. We apply a new analysis technique to infer the atmospheric density from incoherent scatter radar measurements. We identify signs of particle precipitation impact on the neutral atmosphere.
Alistair Bell, Axel Murk, and Gunter Stober
EGUsphere, https://doi.org/10.5194/egusphere-2025-1396, https://doi.org/10.5194/egusphere-2025-1396, 2025
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Increases in middle atmospheric water vapour from the 2022 Hunga eruption have been measured worldwide. This study uses remote sensing measurements at two latitudes and accurate radiative transfer modeling to show significant long-wave heating effects. Though minimal at the surface, the water vapour enhancement can alter middle-atmospheric dynamics, potentially affecting ozone chemistry and weather patterns.
Zishun Qiao, Alan Z. Liu, Gunter Stober, Javier Fuentes, Fabio Vargas, Christian L. Adami, and Iain M. Reid
Atmos. Meas. Tech., 18, 1091–1104, https://doi.org/10.5194/amt-18-1091-2025, https://doi.org/10.5194/amt-18-1091-2025, 2025
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This paper describes the installation of the Chilean Observation Network De Meteor Radars (CONDOR) and its initial results. The routine winds are point-to-point comparable to the co-located lidar winds. The retrievals of spatially resolved horizontal wind fields and vertical winds are also facilitated, benefiting from the extensive meteor detections. The successful deployment and maintenance of CONDOR provide 24/7 and state-of-the-art wind measurements to the research community.
Alistair Bell, Eric Sauvageat, Gunter Stober, Klemens Hocke, and Axel Murk
Atmos. Meas. Tech., 18, 555–567, https://doi.org/10.5194/amt-18-555-2025, https://doi.org/10.5194/amt-18-555-2025, 2025
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Hardware and software developments have been made on a 22 GHz microwave radiometer for the measurement of middle-atmospheric water vapour near Bern, Switzerland. Previous measurements dating back to 2010 have been re-calibrated and an improved optimal estimation retrieval performed on these measurements, giving a 13-year dataset. Measurements made with new and improved instrumental hardware are used to correct previous measurements, which show better agreement than the non-corrected dataset.
Guochun Shi, Hanli Liu, Masaki Tsutsumi, Njål Gulbrandsen, Alexander Kozlovsky, Dimitry Pokhotelov, Mark Lester, Kun Wu, and Gunter Stober
EGUsphere, https://doi.org/10.5194/egusphere-2024-3749, https://doi.org/10.5194/egusphere-2024-3749, 2024
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People are increasingly concerned about climate change due to its widespread impacts, including rising temperatures, extreme weather events, and ecosystem disruptions. Addressing these challenges requires urgent global action to reduce greenhouse gas emissions and adapt to a rapidly changing environment.
Guochun Shi, Witali Krochin, Eric Sauvageat, and Gunter Stober
Atmos. Chem. Phys., 24, 10187–10207, https://doi.org/10.5194/acp-24-10187-2024, https://doi.org/10.5194/acp-24-10187-2024, 2024
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Here we investigated ozone anomalies over polar regions during sudden stratospheric and final stratospheric warming with ground-based microwave radiometers at polar latitudes compared with reanalysis and satellite data. The underlying dynamical and chemical mechanisms are responsible for the observed ozone anomalies in both events. Our research sheds light on these processes, emphasizing the need for a deeper understanding of these processes for more accurate climate modeling and forecasting.
Witali Krochin, Axel Murk, and Gunter Stober
Atmos. Meas. Tech., 17, 5015–5028, https://doi.org/10.5194/amt-17-5015-2024, https://doi.org/10.5194/amt-17-5015-2024, 2024
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Atmospheric tides are global-scale oscillations with periods of a fraction of a day. Their observation in the middle atmosphere is challenging and rare, as it requires continuous measurements with a high temporal resolution. In this paper, temperature time series of a ground-based microwave radiometer were analyzed with a spectral filter to derive thermal tide amplitudes and phases in an altitude range of 25–50 km at the geographical locations of Payerne and Bern (Switzerland).
Gunter Stober, Sharon L. Vadas, Erich Becker, Alan Liu, Alexander Kozlovsky, Diego Janches, Zishun Qiao, Witali Krochin, Guochun Shi, Wen Yi, Jie Zeng, Peter Brown, Denis Vida, Neil Hindley, Christoph Jacobi, Damian Murphy, Ricardo Buriti, Vania Andrioli, Paulo Batista, John Marino, Scott Palo, Denise Thorsen, Masaki Tsutsumi, Njål Gulbrandsen, Satonori Nozawa, Mark Lester, Kathrin Baumgarten, Johan Kero, Evgenia Belova, Nicholas Mitchell, Tracy Moffat-Griffin, and Na Li
Atmos. Chem. Phys., 24, 4851–4873, https://doi.org/10.5194/acp-24-4851-2024, https://doi.org/10.5194/acp-24-4851-2024, 2024
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On 15 January 2022, the Hunga Tonga-Hunga Ha‘apai volcano exploded in a vigorous eruption, causing many atmospheric phenomena reaching from the surface up to space. In this study, we investigate how the mesospheric winds were affected by the volcanogenic gravity waves and estimated their propagation direction and speed. The interplay between model and observations permits us to gain new insights into the vertical coupling through atmospheric gravity waves.
Florian Günzkofer, Gunter Stober, Dimitry Pokhotelov, Yasunobu Miyoshi, and Claudia Borries
Atmos. Meas. Tech., 16, 5897–5907, https://doi.org/10.5194/amt-16-5897-2023, https://doi.org/10.5194/amt-16-5897-2023, 2023
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Electric currents in the ionosphere can impact both satellite and ground-based infrastructure. These currents depend strongly on the collisions of ions and neutral particles. Measuring ion–neutral collisions is often only possible via certain assumptions. The direct measurement of ion–neutral collision frequencies is possible with multifrequency incoherent scatter radar measurements. This paper presents one analysis method of such measurements and discusses its advantages and disadvantages.
Florian Günzkofer, Dimitry Pokhotelov, Gunter Stober, Ingrid Mann, Sharon L. Vadas, Erich Becker, Anders Tjulin, Alexander Kozlovsky, Masaki Tsutsumi, Njål Gulbrandsen, Satonori Nozawa, Mark Lester, Evgenia Belova, Johan Kero, Nicholas J. Mitchell, and Claudia Borries
Ann. Geophys., 41, 409–428, https://doi.org/10.5194/angeo-41-409-2023, https://doi.org/10.5194/angeo-41-409-2023, 2023
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Gravity waves (GWs) are waves in Earth's atmosphere and can be observed as cloud ripples. Under certain conditions, these waves can propagate up into the ionosphere. Here, they can cause ripples in the ionosphere plasma, observable as oscillations of the plasma density. Therefore, GWs contribute to the ionospheric variability, making them relevant for space weather prediction. Additionally, the behavior of these waves allows us to draw conclusions about the atmosphere at these altitudes.
Guochun Shi, Witali Krochin, Eric Sauvageat, and Gunter Stober
Atmos. Chem. Phys., 23, 9137–9159, https://doi.org/10.5194/acp-23-9137-2023, https://doi.org/10.5194/acp-23-9137-2023, 2023
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We present the interannual and climatological behavior of ozone and water vapor from microwave radiometers in the Arctic.
By defining a virtual conjugate latitude station in the Southern Hemisphere, we investigate altitude-dependent interhemispheric differences and estimate the ascent and descent rates of water vapor in both hemispheres. Ozone and water vapor measurements will create a deeper understanding of the evolution of middle atmospheric ozone and water vapor.
Gunter Stober, Alan Liu, Alexander Kozlovsky, Zishun Qiao, Witali Krochin, Guochun Shi, Johan Kero, Masaki Tsutsumi, Njål Gulbrandsen, Satonori Nozawa, Mark Lester, Kathrin Baumgarten, Evgenia Belova, and Nicholas Mitchell
Ann. Geophys., 41, 197–208, https://doi.org/10.5194/angeo-41-197-2023, https://doi.org/10.5194/angeo-41-197-2023, 2023
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The Hunga Tonga–Hunga Ha‘apai volcanic eruption was one of the most vigorous volcanic explosions in the last centuries. The eruption launched many atmospheric waves traveling around the Earth. In this study, we identify these volcanic waves at the edge of space in the mesosphere/lower-thermosphere, leveraging wind observations conducted with multi-static meteor radars in northern Europe and with the Chilean Observation Network De Meteor Radars (CONDOR).
Gunter Stober, Alan Liu, Alexander Kozlovsky, Zishun Qiao, Ales Kuchar, Christoph Jacobi, Chris Meek, Diego Janches, Guiping Liu, Masaki Tsutsumi, Njål Gulbrandsen, Satonori Nozawa, Mark Lester, Evgenia Belova, Johan Kero, and Nicholas Mitchell
Atmos. Meas. Tech., 15, 5769–5792, https://doi.org/10.5194/amt-15-5769-2022, https://doi.org/10.5194/amt-15-5769-2022, 2022
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Precise and accurate measurements of vertical winds at the mesosphere and lower thermosphere are rare. Although meteor radars have been used for decades to observe horizontal winds, their ability to derive reliable vertical wind measurements was always questioned. In this article, we provide mathematical concepts to retrieve mathematically and physically consistent solutions, which are compared to the state-of-the-art non-hydrostatic model UA-ICON.
Witali Krochin, Francisco Navas-Guzmán, David Kuhl, Axel Murk, and Gunter Stober
Atmos. Meas. Tech., 15, 2231–2249, https://doi.org/10.5194/amt-15-2231-2022, https://doi.org/10.5194/amt-15-2231-2022, 2022
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This study leverages atmospheric temperature measurements performed with a ground-based radiometer making use of data that was collected during a 4-year observational campaign applying a new retrieval algorithm that improves the maximal altitude range from 45 to 55 km. The measurements are validated against two independent data sets, MERRA2 reanalysis data and the meteorological analysis of NAVGEM-HA.
Sumanta Sarkhel, Gunter Stober, Jorge L. Chau, Steven M. Smith, Christoph Jacobi, Subarna Mondal, Martin G. Mlynczak, and James M. Russell III
Ann. Geophys., 40, 179–190, https://doi.org/10.5194/angeo-40-179-2022, https://doi.org/10.5194/angeo-40-179-2022, 2022
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A rare gravity wave event was observed on the night of 25 April 2017 over northern Germany. An all-sky airglow imager recorded an upward-propagating wave at different altitudes in mesosphere with a prominent wave front above 91 km and faintly observed below. Based on wind and satellite-borne temperature profiles close to the event location, we have found the presence of a leaky thermal duct layer in 85–91 km. The appearance of this duct layer caused the wave amplitudes to diminish below 91 km.
Christoph Jacobi, Friederike Lilienthal, Dmitry Korotyshkin, Evgeny Merzlyakov, and Gunter Stober
Adv. Radio Sci., 19, 185–193, https://doi.org/10.5194/ars-19-185-2021, https://doi.org/10.5194/ars-19-185-2021, 2021
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We compare winds and tidal amplitudes in the upper mesosphere/lower thermosphere region for cases with disturbed and undisturbed geomagnetic conditions. The zonal winds in both the mesosphere and lower thermosphere tend to be weaker during disturbed conditions. The summer equatorward meridional wind jet is weaker for disturbed geomagnetic conditions. The effect of geomagnetic variability on tidal amplitudes, except for the semidiurnal tide, is relatively small.
Gunter Stober, Alexander Kozlovsky, Alan Liu, Zishun Qiao, Masaki Tsutsumi, Chris Hall, Satonori Nozawa, Mark Lester, Evgenia Belova, Johan Kero, Patrick J. Espy, Robert E. Hibbins, and Nicholas Mitchell
Atmos. Meas. Tech., 14, 6509–6532, https://doi.org/10.5194/amt-14-6509-2021, https://doi.org/10.5194/amt-14-6509-2021, 2021
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Wind observations at the edge to space, 70–110 km altitude, are challenging. Meteor radars have become a widely used instrument to obtain mean wind profiles above an instrument for these heights. We describe an advanced mathematical concept and present a tomographic analysis using several meteor radars located in Finland, Sweden and Norway, as well as Chile, to derive the three-dimensional flow field. We show an example of a gravity wave decelerating the mean flow.
Gunter Stober, Ales Kuchar, Dimitry Pokhotelov, Huixin Liu, Han-Li Liu, Hauke Schmidt, Christoph Jacobi, Kathrin Baumgarten, Peter Brown, Diego Janches, Damian Murphy, Alexander Kozlovsky, Mark Lester, Evgenia Belova, Johan Kero, and Nicholas Mitchell
Atmos. Chem. Phys., 21, 13855–13902, https://doi.org/10.5194/acp-21-13855-2021, https://doi.org/10.5194/acp-21-13855-2021, 2021
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Little is known about the climate change of wind systems in the mesosphere and lower thermosphere at the edge of space at altitudes from 70–110 km. Meteor radars represent a well-accepted remote sensing technique to measure winds at these altitudes. Here we present a state-of-the-art climatological interhemispheric comparison using continuous and long-lasting observations from worldwide distributed meteor radars from the Arctic to the Antarctic and sophisticated general circulation models.
Gunter Stober, Diego Janches, Vivien Matthias, Dave Fritts, John Marino, Tracy Moffat-Griffin, Kathrin Baumgarten, Wonseok Lee, Damian Murphy, Yong Ha Kim, Nicholas Mitchell, and Scott Palo
Ann. Geophys., 39, 1–29, https://doi.org/10.5194/angeo-39-1-2021, https://doi.org/10.5194/angeo-39-1-2021, 2021
Gunter Stober, Kathrin Baumgarten, John P. McCormack, Peter Brown, and Jerry Czarnecki
Atmos. Chem. Phys., 20, 11979–12010, https://doi.org/10.5194/acp-20-11979-2020, https://doi.org/10.5194/acp-20-11979-2020, 2020
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This paper presents a first cross-comparison of meteor ground-based observations and a meteorological analysis (NAVGEM-HA) to compare a seasonal climatology of winds and temperatures at the mesosphere/lower thermosphere. The validation is insofar unique as we not only compare the mean state but also provide a detailed comparison of the short time variability of atmospheric tidal waves. Our analysis questions previous results claiming the importance of lunar tides.
Leonie Bernet, Elmar Brockmann, Thomas von Clarmann, Niklaus Kämpfer, Emmanuel Mahieu, Christian Mätzler, Gunter Stober, and Klemens Hocke
Atmos. Chem. Phys., 20, 11223–11244, https://doi.org/10.5194/acp-20-11223-2020, https://doi.org/10.5194/acp-20-11223-2020, 2020
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With global warming, water vapour increases in the atmosphere. Water vapour is an important gas because it is a natural greenhouse gas and affects the formation of clouds, rain and snow. How much water vapour increases can vary in different regions of the world. To verify if it increases as expected on a regional scale, we analysed water vapour measurements in Switzerland. We found that water vapour generally increases as expected from temperature changes, except in winter.
Franziska Schranz, Jonas Hagen, Gunter Stober, Klemens Hocke, Axel Murk, and Niklaus Kämpfer
Atmos. Chem. Phys., 20, 10791–10806, https://doi.org/10.5194/acp-20-10791-2020, https://doi.org/10.5194/acp-20-10791-2020, 2020
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We measured middle-atmospheric ozone, water vapour and zonal and meridional wind with two ground-based microwave radiometers which are located at Ny-Alesund, Svalbard, in the Arctic. In this article we present measurements of the small-scale horizontal ozone gradients during winter 2018/2019. We found a distinct seasonal variation of the ozone gradients which is linked to the planetary wave activity. We further present the signatures of the SSW in the ozone, water vapour and wind measurements.
Cited articles
Baumgarten, K. and Stober, G.: On the evaluation of the phase relation between temperature and wind tides based on ground-based measurements and reanalysis data in the middle atmosphere, Ann. Geophys., 37, 581–602, https://doi.org/10.5194/angeo-37-581-2019, 2019. a
Baumgarten, K., Gerding, M., Baumgarten, G., and Lübken, F.-J.: Temporal variability of tidal and gravity waves during a record long 10-day continuous lidar sounding, Atmos. Chem. Phys., 18, 371–384, https://doi.org/10.5194/acp-18-371-2018, 2018. a, b
Becker, E.: Dynamical Control of the Middle Atmosphere, Space Sci. Rev.,
168, 283–314, https://doi.org/10.1007/s11214-011-9841-5, 2012. a
Beig, G.: Long-term trends in the temperature of the mesosphere/lower
thermosphere region: 1. Anthropogenic influences, J. Geophys.
Res., 116, A00H11, 2011. a
Brown, P., Weryk, R., Wong, D., and Jones, J.: A meteoroid stream survey using
the Canadian Meteor Orbit Radar: I. Methodology and radiant catalogue,
Icarus, 195, 317–339, https://doi.org/10.1016/j.icarus.2007.12.002,
2008. a
Chau, J. L., Hoffmann, P., Pedatella, N. M., Matthias, V., and Stober, G.:
Upper mesospheric lunar tides over middle and high latitudes during sudden
stratospheric warming events, J. Geophys. Res.-Space Phy.,
120, 3084–3096, https://doi.org/10.1002/2015JA020998,
2015. a
Conte, J. F., Chau, J. L., Stober, G., Pedatella, N., Maute, A., Hoffmann, P.,
Janches, D., Fritts, D., and Murphy, D. J.: Climatology of semidiurnal lunar
and solar tides at middle and high latitudes: Interhemispheric comparison,
J. Geophys. Res.-Space Phy., 122, 7750–7760,
https://doi.org/10.1002/2017JA024396,
2017. a
Conte, J. F., Chau, J. L., Laskar, F. I., Stober, G., Schmidt, H., and Brown, P.: Semidiurnal solar tide differences between fall and spring transition times in the Northern Hemisphere, Ann. Geophys., 36, 999–1008, https://doi.org/10.5194/angeo-36-999-2018, 2018. a
Dowdy, A., Vincent, R. A., Tsutsumi, M., Igarashi, K., Murayama, Y., Singer,
W., and Murphy, D. J.: Polar mesosphere and lower thermosphere dynamics: 1.
Mean wind and gravity wave climatologies, J. Geophys. Res.-Atmos., 112, D17104,
https://doi.org/10.1029/2006JD008126, 2007. a
Eckermann, S. D., Broutman, D., Ma, J., Doyle, J. D., Pautet, P. D., Taylor,
M. J., Bossert, K., Williams, B. P., Fritts, D. C., and Smith, R. B.:
Dynamics of Orographic Gravity Waves Observed in the Mesosphere over the
Auckland Islands during the Deep Propagation Gravity Wave Experiment
(DEEPWAVE), J. Atmos. Sci., 73, 3855–3876,
https://doi.org/10.1175/JAS-D-16-0059.1, 2016. a
Egito, F., Andrioli, V., and Batista, P.: Vertical winds and momentum fluxes
due to equatorial planetary scale waves using all-sky meteor radar over
Brazilian region, J. Atmos. Solar-Terr. Phy.,
149, 108–119, https://doi.org/10.1016/j.jastp.2016.10.005,
2016. a
Emmert, J. T., Picone, J. M., and Meier, R. R.: Thermospheric global average
density trends, 1967–2007, derived from oorbit of 5000 near-Earth objects,
Geophys. Res. Lett., 35, L05101, https://doi.org/10.1029/2007GL032809, 2008. a
Fritts, D. C. and Alexander, M. J.: Gravity wave dynamics and effects in the middle atmosphere, Rev. Geophys., 41, 1003,
https://doi.org/10.1029/2001RG000106, 2003. a, b
Fritts, D. C. and VanZandt, T. E.: Spectral Estimates of Gravity Wave Energy
and Momentum Fluxes. Part I: Energy Dissipation, Acceleration, and
Constraint., J. Atmos. Sci., 50, 3685–3694,
https://doi.org/10.1175/1520-0469(1993)050<3685:SEOGWE>2.0.CO;2,
1993. a
Fuller-Rowell, T. J., Fang, T.-W., Wang, H., Matthias, V., Hoffmann, P., Hocke,
K., and Studer, S.: Impact of Migrating Tides on Electrodynamics During the
January 2009 Sudden Stratospheric Warming, chap. 14, pp. 163–174, American
Geophysical Union (AGU), https://doi.org/10.1002/9781118929216.ch14,
2016. a
Hagan, M. E. and Forbes, J. M.: Migrating and nonmigrating diurnal tides in the
middle and upper Atmosphere excited by tropospheric latent heat release,
J. Geophys. Res., 107, 4754, https://doi.org/10.1029/2001JD001236, 2002. a
Hocking, W. K., Fuller, B., and Vandepeer, B.: Realtime determination of
meteor-related parameters utilizing modern digital technology, J. Atmos. Solar-Terr. Phy., 69, 155–169,
https://doi.org/10.1016/S1364-6826(00)00138-3, 2001. a
Hoffmann, P., Becker, E., Singer, W., and Placke, M.: Seasonal variation of
mesospheric waves at northern middle and high latitudes, J. Atmos. Solar-Terr. Phy., 72, 1068–1079,
https://doi.org/10.1016/j.jastp.2010.07.002, 2010. a, b
Hoffmann, P., Rapp, M., Singer, W., and Keuer, D.: Trends of mesospheric
gravity waves at northern middle latitudes during summer, J. Geophys. Res., 116, D00P08, https://doi.org/10.1029/2011JD015717, 2011. a, b, c
Hysell, D., Fritts, D., Laughman, B., and Chau, J. L.: Gravity Wave-Induced
Ionospheric Irregularities in the Postsunset Equatorial Valley Region,
J. Geophys. Res., 122, 579–590,
https://doi.org/10.1002/2017JA024514, 2017. a
Iimura, H., Fritts, D. C., Tsutsumi, M., Nakamura, T., Hoffmann, P., and
Singer, W.: Long-term observations of the wind field in the Antarctic and
Arctic mesosphere and lower-thermosphere at conjugate latitudes, J. Geophys. Res., 116, D20112, https://doi.org/10.1029/2011JD016003, 2011. a, b
Iimura, H., Fritts, D. C., Janches, D., Singer, W., and Mitchell, N. J.: Interhemispheric structure and variability of the 5-day planetary wave from meteor radar wind measurements, Ann. Geophys., 33, 1349–1359, https://doi.org/10.5194/angeo-33-1349-2015, 2015. a
Jacobi, Ch., Hoffmann, P., and Kürschner, D.: Trends in MLT region winds and planetary waves, Collm (52∘ N, 15∘ E), Ann. Geophys., 26, 1221–1232, https://doi.org/10.5194/angeo-26-1221-2008, 2008. a
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., and Kürschner, D.:
Semi-empirical model of middle atmosphere wind from the ground to the lower
thermosphere, Adv. Space Res., 43, 239–246, 2009. a
Jacobi, C., Lilienthal, F., Geißler, C., and Krug, A.: Long-term variability
of mid-latitude mesosphere-lower thermosphere winds over Collm (51 N, 13 E),
J. Atmos. Solar-Terr. Phy., 136, 174–186,
https://doi.org/10.1016/j.jastp.2015.05.006, 2015. a, b, c
Jones, J., Brown, P., Ellis, K., Webster, A., Campbell-Brown, M., Krzemenski,
Z., and Weryk, R.: The Canadian Meteor Orbit Radar: system overview and
preliminary results, Planet. Space Sci., 53, 413–421,
https://doi.org/10.1016/j.pss.2004.11.002,
2005. a
Keuer, D., Hoffmann, P., Singer, W., and Bremer, J.: Long-term variations of the mesospheric wind field at mid-latitudes, Ann. Geophys., 25, 1779–1790, https://doi.org/10.5194/angeo-25-1779-2007, 2007. a, b, c
Kishore Kumar, G. and Hocking, W. K.: Climatology of northern polar latitude MLT dynamics: mean winds and tides, Ann. Geophys., 28, 1859–1876, https://doi.org/10.5194/angeo-28-1859-2010, 2010. a
Las̆tovic̆ka, J., Solomon, S. C., and Qian, L.: Trends in the Neutral
and Ionized Upper Atmosphere, Space Sci. Rev., 168, 113–145,
https://doi.org/10.1007/s11214-011-9799-3, 2012. a
Latteck, R., Singer, W., Morris, R. J., Hocking, W. K., Murphy, D. J., Holdsworth, D. A., and Swarnalingam, N.: Similarities and differences in polar mesosphere summer echoes observed in the Arctic and Antarctica, Ann. Geophys., 26, 2795–2806, https://doi.org/10.5194/angeo-26-2795-2008, 2008. a
Lieberman, R. S. and Hays, P. B.: An estimate of the momentum deposition in the
lower thermosphere by the observed diurnal tide., J. Atmos.
Sci., 51, 3094–3105,
https://doi.org/10.1175/1520-0469(1994)051<3094:AEOTMD>2.0.CO;2,
1994. a
Lindzen, R. S. and Chapman, S.: Atmospheric tides, Space Sci. Rev., 10,
3–188, https://doi.org/10.1007/BF00171584, 1969. a
Lu, H., Gray, L. J., White, I. P., and Bracegirdle, T. J.: Stratospheric
Response to the 11-Yr Solar Cycle: Breaking Planetary Waves, Internal
Reflection, and Resonance, J. Climate, 30, 7169–7190,
https://doi.org/10.1175/JCLI-D-17-0023.1, 2017. a
Lukianova, R., Kozlovsky, A., and Lester, M.: Climatology and inter-annual
variability of the polar mesospheric winds inferred from meteor radar
observations over Sodankylä (67 N, 23 E) during solar cycle 24, J.
Atmos. Solar-Terr. Phy., 171, 241–249,
https://doi.org/10.1016/j.jastp.2017.06.005, 2018. a
Manson, A. H., Meek, C. E., Chshyolkova, T., Xu, X., Aso, T., Drummond, J. R., Hall, C. M., Hocking, W. K., Jacobi, Ch., Tsutsumi, M., and Ward, W. E.: Arctic tidal characteristics at Eureka (80∘ N, 86∘ W) and Svalbard (78∘ N, 16∘ E) for 2006/07: seasonal and longitudinal variations, migrating and non-migrating tides, Ann. Geophys., 27, 1153–1173, https://doi.org/10.5194/angeo-27-1153-2009, 2009. a
Matsuno, T.: A Dynamical Model of the Stratospheric Sudden Warming, J.
Atmos. Sci., 28, 1479–1494,
https://doi.org/10.1175/1520-0469(1971)028<1479:ADMOTS>2.0.CO;2, 1971. a, b
Matthias, V. and Ern, M.: On the origin of the mesospheric quasi-stationary planetary waves in the unusual Arctic winter 2015/2016, Atmos. Chem. Phys., 18, 4803–4815, https://doi.org/10.5194/acp-18-4803-2018, 2018. a, b
Middleton, H. R., Mitchell, N. J., and Muller, H. G.: Mean winds of the mesosphere and lower thermosphere at 52∘ N in the period 1988–2000, Ann. Geophys., 20, 81–91, https://doi.org/10.5194/angeo-20-81-2002, 2002. a, b
Pedatella, N., Liu, H.-L., and Hagan, M.: Day-to-day migrating and nonmigrating
tidal variability due to the six-day planetary wave, J. Geophys. Res., 117, A06301, https://doi.org/10.1029/2012JA017581, 2012. a
Portnyagin, Y. I., Solovjova, T. V., Makarov, N. A., Merzlyakov, E. G., Manson, A. H., Meek, C. E., Hocking, W., Mitchell, N., Pancheva, D., Hoffmann, P., Singer, W., Murayama, Y., Igarashi, K., Forbes, J. M., Palo, S., Hall, C., and Nozawa, S.: Monthly mean climatology of the prevailing winds and tides in the Arctic mesosphere/lower thermosphere, Ann. Geophys., 22, 3395–3410, https://doi.org/10.5194/angeo-22-3395-2004, 2004. a, b, c, d
Portnyagin, Y. I., Merzlyakov, E. G., Solovjova, T. V., Jacobi, C.,
Kürschner, D., Manson, A., and Meek, C.: Long-term trends and
year-to-year variability of mid-latitude mesosphere/lower thermosphere winds,
J. Atmos. Solar-Terr. Phy., 68, 1890–1901,
https://doi.org/10.1016/j.jastp.2006.04.004, 2006. a
Qian, L., Jacobi, C., and McInerney, J.: Trends and Solar Irradiance Effects in
the Mesosphere, J. Geophys. Res., 124, 1343–1360,
https://doi.org/10.1029/2018JA026367, 2019. a
Rind, D., Lean, J., Lerner, J., Lonergan, P., and Leboissitier, A.: Exploring
the stratospheric/tropospheric response to solar forcing, J. Geophys. Res., 113, D24103, https://doi.org/10.1029/2008JD010114, 2008. a
Salby, M. L. and Callaghan, P. F.: Influence of the Solar cycle on the
Gerneral circulation of the Stratosphere and Upper Troposphere, Space Sci.
Rev., 124, 287–303, https://doi.org/10.1007/s11214-006-9064-3, 2006. a
Schminder, R. and Kürschner, D.: Permanent monitoring of the upper
mesosphere and lower thermosphere wind fields (prevailing and semidiurnal
tidal components) obtained from LF D1 measurements in 1991 at the Collm
Geophysical Observatory, J. Atmos. Terr. Phys., 56,
1263–1269, https://doi.org/10.1016/0021-9169(94)90064-7,
1994. a
Shibuya, R., Sato, K., Tsutsumi, M., Sato, T., Tomikawa, Y., Nishimura, K., and Kohma, M.: Quasi-12 h inertia–gravity waves in the lower mesosphere observed by the PANSY radar at Syowa Station (39.6∘ E, 69.0∘ S), Atmos. Chem. Phys., 17, 6455–6476, https://doi.org/10.5194/acp-17-6455-2017, 2017. a
Stober, G. and Chau, J. L.: A multistatic and multifrequency novel approach for
specular meteor radars to improve wind measurements in the MLT region,
Radio Sci., 50, 431–442, https://doi.org/10.1002/2014RS005591, 2015. a
Stober, G., Jacobi, C., and Keuer, D.: Distortion of meteor count rates due to cosmic radio noise and atmospheric particularities, Adv. Radio Sci., 8, 237–241, https://doi.org/10.5194/ars-8-237-2010, 2010. a
Stober, G., Jacobi, C., Matthias, V., Hoffmann, P., and Gerding, M.: Neutral
air density variations during strong planetary wave activity in the mesopause
region derived from meteor radar observations, J. Atmos. Solar-Terr. Phy., 74, 55–63, https://doi.org/10.1016/j.jastp.2011.10.007,
2012. a
Stober, G., Matthias, V., Brown, P., and Chau, J. L.: Neutral density variation
from specularmeteor echo observations spanning one solar cycle, Geophys.
Res. Lett., 41, 6919–6925, https://doi.org/10.1002/2014GL061273, 2014. a
Stober, G., Matthias, V., Jacobi, C., Wilhelm, S., Höffner, J., and Chau, J. L.: Exceptionally strong summer-like zonal wind reversal in the upper mesosphere during winter 2015/16, Ann. Geophys., 35, 711–720, https://doi.org/10.5194/angeo-35-711-2017, 2017. a, b, c, d
Stober, G., Chau, J. L., Vierinen, J., Jacobi, C., and Wilhelm, S.: Retrieving horizontally resolved wind fields using multi-static meteor radar observations, Atmos. Meas. Tech., 11, 4891–4907, https://doi.org/10.5194/amt-11-4891-2018, 2018.
a, b, c
Tsuda, T.: Characteristics of atmospheric gravity waves observed using the MU
(Middle and Upper atmosphere) radar and GPS (Global Positioning System) radio
occultation, P. Jpn. Acad., B-Phys., 90, 12–27,
https://doi.org/10.2183/pjab.90.12, 2014. a
Tsuda, T., Kato, S., and Vincent, R.: Long period wind oscillations observed by
the Kyoto meteor radar and comparison of the quasi-2-day wave with Adelaide
HF radar observations, J. Atmos. Terr. Phys., 50, 225–230,
https://doi.org/10.1016/0021-9169(88)90071-2, 1988. a
Tsuda, T., Nishida, M., Rocken, C., and Ware, R. H.: A Global Morphology of
Gravity Wave Activity in the Stratosphere Revealed by the GPS Occultation
Data (GPS/MET), J. Geophys. Res., 105, 7257–7273,
https://doi.org/10.1029/1999JD901005, 2000. a
Webster, A. R., Brown, P. G., Jones, J., Ellis, K. J., and Campbell-Brown, M.: Canadian Meteor Orbit Radar (CMOR), Atmos. Chem. Phys., 4, 679–684, https://doi.org/10.5194/acp-4-679-2004, 2004. a
Yiğit, E. and Medvedev, A.: Internal wave coupling processes in Earth’s
atmosphere, Adv. Space Res., 55, 983–1003,
https://doi.org/10.1016/j.asr.2014.11.020,
2015. a
Yiğit, E. K. K. P., Georgieva, K., and Ward, W.: A review of vertical
coupling in the Atmosphere–Ionosphere system: Effects of waves, sudden
stratospheric warmings, space weather, and of solar activity, J. Atmos. Solar-Terr. Phy., 141, 1–12,
https://doi.org/10.1016/j.jastp.2016.02.011, 2016. a
Yuan, T., Schmidt, H., She, C. Y., Krueger, D. A., and Reising, S.: Seasonal
variations of semidiurnal tidal perturbations in mesopause region temperature
and zonal and meridional winds above Fort Collins, Colorado (40.6∘ N,
105.1∘ W), J. Geophys. Res., 113, D20103, https://doi.org/10.1029/2007JD009687,
2008a. a, b
Yuan, T., She, C.-Y., Krueger, D. A., Sassi, F., Garcia, R., Roble, R. G.,
Liu, H.-L., and Schmidt, H.: Climatology of mesopause region temperature,
zonal wind, and meridional wind over Fort Collins, Colorado (41∘ N,
105∘ W), and comparison with model simulations, J. Geophys. Res., 113, D03105, https://doi.org/10.1029/2007JD008697, 2008b. a
Short summary
We report on long-term observations of atmospheric parameters in the mesosphere and lower thermosphere made over the last 2 decades for the northern-latitude locations of Andenes, Juliusruh, and Tavistock. The observations are based on meteor wind measurements and further include the long-term variability of winds, tides, and the kinetic energy of gravity waves and planetary waves. Furthermore, the influence on an 11-year oscillation on the winds and tides is presented.
We report on long-term observations of atmospheric parameters in the mesosphere and lower...