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Validating the MYSTIC three-dimensional radiative transfer model with observations from the complex topography of Arizona's Meteor Crater
the MYSTIC three-dimensional radiative transfer model the complex topography Arizona's Meteor Crater
2010/9/21
The MYSTIC three-dimensional Monte-Carlo radiative transfer model has been extended to simulate solar and thermal irradiances with a rigorous consideration of topography. Forward as well as backward M...
Metal concentrations in the upper atmosphere during meteor showers
Metal concentrations upper atmosphere meteor showers
2010/2/21
Using the nadir-viewing Global Ozone Measuring Experiment (GOME) UV/VIS spectrometer on the ERS-2 satellite, we investigate short term variations in the vertical magnesium column densities in the atmo...
Diurnal and annual variations of meteor rates at the arctic circle
meteor rates arctic circle Diurnal and annual variations
2009/3/4
Meteors are an important source for (a) the metal atoms of the upper atmosphere metal layers and (b) for condensation nuclei, the existence of which are a prerequisite for the formation of noctilucent...
Radar observations of meteor trails, and their interpretation using Fresnel holography: a new tool in meteor science
meteor trails Fresnel holography meteor science
2009/2/27
A Fresnel transform technique has been developed at Adelaide to analyse radar meteor echoes detected in the transverse mode. The genesis for this technique was the study of the structure of the scatte...
Meteor velocity determination with plasma physics
Meteor velocity determination plasma physics
2009/2/26
Understanding the global meteor flux at Earth requires the measurement of meteor velocities. While several radar methods exist for measuring meteor velocity, they may be biased by plasma reflection me...
Aspect sensitivity of VHF echoes from field aligned irregularities in meteor trails and thin ionization layers
VHF echoes meteor trails thin ionization layers
2009/2/25
The aspect sensitivity of VHF echoes from field aligned irregularities (FAI) within meteor trails and thin ionization layers is studied using numerical models. Although the maximum power is obtained w...
The radar system described here (CMOR) comprises a basic 5-element receiving system, co-located with a pulsed transmitter, specifically designed to observe meteor echoes and to determine their positio...
The EISCAT meteor-head method – a review and recent observations
EISCAT meteor-head method Barker codes dual-frequency target sizes
2009/2/25
Since the very first meteor observations at EISCAT in December 1990, the experimental method has improved significantly. This is due to a better understanding of the phenomenon and a recent major upgr...
A time-resolved model of the mesospheric Na layer: constraints on the meteor input function
time-resolved model mesospheric Na layer meteor input function
2009/2/25
A time-resolved model of the Na layer in the mesosphere/lower thermosphere region is described, where the continuity equations for the major sodium species Na, Na+ and NaHCO3 are solved explicity, and...
Observations of meteor-head echoes using the Jicamarca 50MHz radar in interferometer mode
meteor-head echoes Jicamarca 50MHz radar interferometer mode
2009/2/24
We present results of recent observations of meteor-head echoes obtained with the high-power large-aperture Jicamarca 50MHz radar (11.95°S, 76.87°W) in an interferometric mode. The large power-apertur...