Comparison between seasonal variations in tidal and internal gravity wave activity as derived from observations at Maimaga and Tiksi

Since 2015, simultaneous observations of temperature of the high-latitude mesopause (87 km) have been made at Maimaga (63.04° N, 129.51° E) and Tiksi (71.58° N, 128.77° E) stations. These stations record spectra with Shamrock (Andor) photosensitive infrared spectrographs detecting the OH (3, 1) band...

Full description

Bibliographic Details
Published in:Solar-Terrestrial Physics
Main Authors: Sivtseva V.I., Ammosov P.P., Gavrilyeva G.A., Koltovskoi I.I., Ammosova A.M.
Format: Article in Journal/Newspaper
Language:English
Published: INFRA-M 2018
Subjects:
high-latitude mesopause
hydroxyl emission
internal gravity waves
tidal waves
Astrophysics
QB460-466
Tiksi
Online Access:https://doi.org/10.12737/stp-41201811
https://doaj.org/article/61cf0acc15284497a249cf0dc3c03e18
Description
Summary:Since 2015, simultaneous observations of temperature of the high-latitude mesopause (87 km) have been made at Maimaga (63.04° N, 129.51° E) and Tiksi (71.58° N, 128.77° E) stations. These stations record spectra with Shamrock (Andor) photosensitive infrared spectrographs detecting the OH (3, 1) band in the near-infrared region (about 1.5 μm). We analyze temperature data obtained in observation seasons from 2015 to 2017. Standard deviations of temperature σ from its mean values are taken as characteristics of wave activity at night. We have obtained standard temperature deviations corresponding to internal gravity waves (IGW) (σgw) and tidal waves (σtd). Mean night rotational temperatures of hydroxyl emission almost coincide, and seasonal variations of gravity and tidal waves have a similar form during two seasons of simultaneous observations at Tiksi and Maimaga.

Similar Items