DYNAMITE project (2016-2018)

Understanding the role of mesosphere and lower thermosphere (MLT) dynamics at mid and high latitudes on the ionosphere/thermosphere weather


Scientific objectives

  1. Quantification of the gravity waves (GW) activity in the MLT region using Lidar measurements (figure 1), and estimation of their corresponding momentum flux at middle and high latitudes using Radar observations.
  2. Investigation of the semidiurnal solar and lunar tides in the MLT region during sudden stratospheric warmings (SSW) and their relation to splitting and displacing stratospheric polar vortex events, using observations and simulations (figure 2).
  3. Evaluation of the observed MLT solar and lunar tides during SSW and non-SSW events on the I/T weather, by comparing special WACCM-X + TIMEGCM simulations with satellite and ground-based I/T observations.
  4. Investigation of the interactions of planetary waves (PW), mean winds and tides in the MLT region and their relation to thermospheric parameters as observed by SWARM and other satellites (e.g., CHAMP, GRACE, GOCE) at middle and high latitudes.


List of participants

  • Prof. Dr. J. L. Chau
  • Prof. Dr. F.-J. Lübken
  • Dr. F. Conte
  • Dr. G. Stober
  • Dr. M. Gerding
  • Dr. G. Baumgarten
  • Dr. J. Höffner
  • Dr. R. Latteck
  • Dr. K. Baumgarten
  • Dr. D. Pokhotelov

External collaborators

  • Dr. N. Pedatella (NCAR)
  • Dr. L. Goncharenko (MIT-Haystack Observatory)
  • Prof. C. Jacobi (University of Leipzig)
  • Dr. H. L. Liu (HAO)
  • Dr. J. Matzka (GFZ)
  • Dr. H. Schmidt (MPI)
  • Dr. D. Murphy (CPC-AAD)

Related publications

  • Baumgarten, K., M. Gerding, G. Baumgarten and F.-J. Lübken (2018), Temporal variability of tidal and gravity waves during a record long 10 day continuous lidar sounding, Atmos. Chem. Phys., 18, 371-384, doi:10.5194/acp-18-371-2018
  • Baumgarten, K., M. Gerding, and F.-J. Lübken (2017), Seasonal variation of gravity wave parameters using different filter methods with daylight lidar measurements at midlatitudes, J. Geophys. Res. Atmos., 122, 2683-2695, doi:10.1002/2016JD025916
  • Chau, J. L., P. Hoffmann, N. M. Pedatella, V. Matthias, and G. Stober (2015), Upper mesospheric lunar tides over middle and high latitudes during sudden stratospheric warming events, J. Geophys. Res. Space Physics, 120, doi:10.1002/2015JA020998
  • Conte, J. F., J. L. Chau, G. Stober, N. Pedatella, A. Maute, P. Hoffmann, D. Janches, D. Fritts, and D. J. Murphy (2017), Climatology of semidiurnal lunar and solar tides at middle and high latitudes: Interhemispheric comparison, J. Geophys. Res. Space Physics, 122, doi:10.1002/2017JA024396
  • Conte, J. F., and C. Brunini, Ingestion of FORMOSAT-3/COSMIC GPS data into La Plata Ionospheric Model: A preliminary assessment (2017), Adv. Space Res., 60, 677 691, doi:10.1016/j.asr.2017.04.025
  • Conte, J. F., J. L. Chau, F. I. Laskar, G. Stober, H. Schmidt, and P. Brown (2018), Semidiurnal solar tide differences between fall and spring transition times in the Northern Hemisphere, Ann. Geophys., 36, 999-1008, doi.org/10.5194/angeo-36-999-2018
  • He, M., J. L. Chau, G. Stober, C. M. Hall, M. Tsutsumi und P. Hoffmann (2017), Application of Manley-Rowe relation in analyzing nonlinear interactions between planetary waves and the solar semidiurnal tide during 2009 sudden stratospheric warming event, J. Geophys. Res., 122, 10783-10795, doi:10.1002/2017JA024630
  • Hysell, D. L., D. C. Fritts, B. Laughman und J. L. Chau (2017), Gravity wave-induced ionospheric irregularities in the postsunset equatorial valley region, J. Geophys. Res., 122, 11579-11590, doi:10.1002/2017JA024514
  • Pedatella, N. M., H. L. Liu, F. Sassi, J. Lei, J. L. Chau, and X. Zhang (2014), Ionosphere variability during the 2009 SSW: Influence of the lunar semidiurnal tide and mechanisms producing electron density variability, J. Geophys. Res. Space Physics, 119, 3828-3843, doi:10.1002/2014JA019849
  • Pedatella, N. M., J. L. Chau, H. Schmidt, L. P. Goncharenko, C. Stolle, K. Hocke, V. L. Harvey, B. Funke und T. A. Siddiqui (2018), How sudden stratospheric warming affects the whole atmosphere, EOS Earth & Space Science News, 99, doi:10.1029/2018EO092441
  • Pokhotelov, D., E. Becker, G. Stober und J. L. Chau (2018), Seasonal variability of atmospheric tides in the mesosphere and lower thermosphere: Meteor radar data and simulations, Ann. Geophys., 36, 825-830, doi:10.5194/angeo-36-825-2018