EGU21-14312
https://doi.org/10.5194/egusphere-egu21-14312
EGU General Assembly 2021
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Exploring MLT momentum fluxes and horizontal wind gradients over the Andes at four different latitudinal sectors using multistatic configurations

J. Federico Conte1, Jorge Chau1, Diego Janches2, David Fritts3, Alan Liu4, Zishun Qiao4, Jacobo Salvador5,7, and José Hormaechea7,6
J. Federico Conte et al.
  • 1Leibniz-Institute of Atmospheric Physics, Radar Remote Sensing, Kühlungsborn, Germany (conte@iap-kborn.de)
  • 2ITM Physics Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
  • 3GATS Inc., Boulder, Colorado, USA
  • 4Embry-Riddle Aeronautical University, Daytona Beach, USA
  • 5Universidad Nacional de la Patagonia Austral, Río Gallegos, Argentina
  • 6Facultad de Ciencias Astronómicas y Geofísicas, UNLP, Argentina
  • 7CONICET, Argentina

The middle atmosphere over the southern Andes is known as one of the most dynamically active regions in the world. Previous studies have investigated wave dynamics at mesosphere and lower thermosphere (MLT) altitudes within this region, but only a handful of them have made use of continuous measurements provided by specular meteor radars (SMRs). Furthermore, it was only until recently that MLT horizontal wind gradients were estimated for the first time using a multistatic SMR network located in southern Patagonia. By observing larger amounts of meteors from different viewing angles, multistatic SMRs allow estimating not only more reliable momentum fluxes, but also parameters such us relative vorticity. In this work, we explore and compare MLT wave dynamics at low and middle latitudes around the Andes Mountain range. For this purpose, we investigate mean momentum fluxes and horizontal wind gradients obtained using four multistatic SMR networks: SIMONe Peru (12° S), CONDOR (30° S), SIMONe Argentina (50° S) and MMARIA-SAAMER (54° S).

How to cite: Conte, J. F., Chau, J., Janches, D., Fritts, D., Liu, A., Qiao, Z., Salvador, J., and Hormaechea, J.: Exploring MLT momentum fluxes and horizontal wind gradients over the Andes at four different latitudinal sectors using multistatic configurations, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-14312, https://doi.org/10.5194/egusphere-egu21-14312, 2021.

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