Investigating Mesospheric Turbulence by Multistatic Specular Meteor Radars: Results from the SIMONe Campaign 2018
Abstract
Observing the velocity field at high resolution in the Mesosphere and Lower Thermosphere [MLT] is a challenging task. State of the art specular meteor RADARs represent a valid option to study the spatial and temporal evolution of the wind velocity field in the MLT over extended domains and for long periods, the primary constraint being the limited number of meteors crossing the middle-upper atmosphere per unit of time in a given region. The recently developed MMARIA (Multi-static, Multi-frequency Agile Radar for Investigations of the Atmosphere) concept (Stober and Chau 2015) allows to maximize the number of observed meteor echoes and provides new ways to estimate the kinetic energy spectra in the MLT (Stober et al. 2018, Vierinen et al. 2019). We present preliminary results from the SIMONe (Spread-spectrum Interferometric Multistatic meteor radar Observing Network) initiative 2018, a 7-day field campaign based on 11 different meteor radar links installed and operated in the Northern part of Germany and southern Denmark. The SIMONe campaign benefited from the implementation of the MMARIA concept combined multiple transmitters and multiple receivers, spread-spectrum and compressed sensing approaches (Vierinen et al., 2016, Chau et al., 2019, Urco et al. 2019). During the campaign, we obtained a unique database (containing 10-20 times more measurements per day than usual single meteor radar records) of meteor trail events within a large geographic area (600km x 600km). We will present the results from a novel method using second-order statistics as well as from derived wind fields, for different horizontal scales.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFMNG43A0908C
- Keywords:
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- 4415 Cascades;
- NONLINEAR GEOPHYSICS;
- 4568 Turbulence;
- diffusion;
- and mixing processes;
- OCEANOGRAPHY: PHYSICAL;
- 5405 Atmospheres;
- PLANETARY SCIENCES: SOLID SURFACE PLANETS;
- 5430 Interiors;
- PLANETARY SCIENCES: SOLID SURFACE PLANETS