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First mesospheric wind images using the Michelson interferometer for airglow dynamics imaging.

J A Langille, W E Ward, T Nakamura

|December 14, 2016

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The Michelson interferometer for airglow dynamics imaging (MIADI) successfully remotely detected mesopause region winds. This instrument provides simultaneous wind and irradiance images, validating its imaging capabilities for geophysical studies.

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Area of Science:

Atmospheric Physics
Geophysics
Optical Instrumentation

Background:

The mesopause region is crucial for understanding atmospheric dynamics.
Remote sensing of upper atmospheric winds requires advanced instrumentation.
Airglow emissions provide valuable data for atmospheric studies.

Purpose of the Study:

To describe the measurement and analysis approach of the Michelson interferometer for airglow dynamics imaging (MIADI).
To present the extraction of line-of-sight Doppler wind and irradiance fields from MIADI observations.
To validate the imaging capability of MIADI for detecting geophysical perturbations.

Main Methods:

Utilizing Doppler Michelson interferometry combined with imaging.
Employing spectrally isolated airglow emissions (O(S1) at 557.73 nm and OH (6, 2) P1 (2) at 839.918 nm).
Developing a measurement and analysis approach for simultaneous wind and irradiance imaging.

Main Results:

Successful 6-hour measurement campaign conducted in July 2014.
Obtained simultaneous images of line-of-sight Doppler wind and irradiance fields.
Identified large-scale and small-scale geophysical perturbations in the obtained images.

Conclusions:

The MIADI instrument and its analysis approach are effective for remote wind detection in the mesopause.
MIADI's imaging capability is validated by the detection of atmospheric perturbations.
The study demonstrates the potential of MIADI for studying airglow dynamics.