@InProceedings{AndrioliEgitBatiClem:2015:TeSKMe,
author = "Andrioli, V{\^a}nia F{\'a}tima and Egito, F. and Batista, Paulo
Prado and Clemesha, Barclay Robert",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidade Federal do Oeste da Bahia} and {Instituto Nacional
de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Testing SKiYMET Meteor Radar capability for inferring vertical
winds in the MLT region",
year = "2015",
organization = "IUGG General Assembly, 26.",
abstract = "Meteor radars have been used as an important instrument for
improving our knowledge about dynamics in the Mesosphere and Lower
Thermosphere (MLT) region. However, instrumental limitations
hinder its use for measuring the vertical winds and momentum
fluxes. According to Babu et al. (2012) all-sky meteor radars are
able to infer vertical wind when using a large number of meteor
echoes centered at the meteor ablation peak. On the other hand,
simpler all-sky meteor radars can not reach this condition,
leading low confidence on its results. In order to evaluate the
accuracy of vertical winds values we have performed several tests
based on a simple model considering real meteor distributions and
theoretical equations of MLT winds motion. Moreover, we have also
considered a random error simulating instrumental measurements
errors on radial velocities. As a result of our tests, Brazilian
SKYiMETs radars data can be used for this purpose with an accuracy
of ~ 1 m/s, what means that we can not measure weaker flows. This
is reasonable once planetary scale waves, like Kelvin waves, can
reach vertical winds around 4 m/s, and also gravity waves can
reach values even larger as 20 m/s. Furthermore, we could recover
very well the period of about 3.5 days for Kelvin Wave. These
results are important since they support the use of meteor radars
with the purpose of inferring vertical fluxes of horizontal
momentum.",
conference-location = "Prague, Czech Republic",
conference-year = "22 June - 02 July",
urlaccessdate = "29 mar. 2024"
}