Description

Local full diurnal coverage of temperature variations across the turbopause (~ 90 km to 115 km altitude) is achieved by combining the nocturnal observations of a Sodium (Na) Doppler lidar on the Utah State University (USU) campus (41.7?N, 248.2?E) and NASA MIGHTI/ICON daytime observations made in the same vicinity. In this paper, utilizing this hybrid dataset during summer 2020 between June 12th and July 15th, we retrieve the temperature signatures of diurnal and semidiurnal tidal waves in this region. The tidal amplitudes are similar for both components: less than 5 K below ~ 98 km but increase considerably above, up to 19 K near 104 km, while experiencing significant dissipation near turbopause altitudes ~ 110 km. The tidal phase profiles show dominance of tidal components with long vertical wavelength (longer than 40 km) for the semidiurnal tide. The diurnal tide demonstrates close to evanescent wave behavior in the turbopause region.

OCLC

1236226073

Document Type

Dataset

DCMI Type

Dataset

File Format

.txt, .pro, .zip

Viewing Instructions

The data is contained within NetCDF (NC) files and normally zipped with tar using the command "tar -czf". Use the command "tar -xzf" on the files to extract the data. The ZIP format was uzed to ensure there is a CRC for each data file and to reduce the number of files (level 1 data often contains thousands of files per day per instrument).

Publication Date

2-1-2021

Funder

NASA, National Aeronautics and Space Administration

Publisher

Utah State University

Award Number

NASA, National Aeronautics and Space Administration NNG12FA45C; NASA, National Aeronautics and Space Administration NNG12FA42I

Methodology

The Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) onboard the NASA Ionospheric Connection Explorer (ICON) satellite, launched in October 2019, measures neutral temperature by imaging the molecular oxygen atmospheric band (A band) day and night

Start Date

6-12-2020

End Date

6-15-2020

Language

eng

Code Lists

MIGHTI: The Michelson Interferometer for Global High-resolution Thermospheric Imaging

ICON: Ionospheric Connection Explorer satellite

DOY: Day of Year

EUV: Extreme Ultra-Violet Instrument

FUV: Far Ultra-Violet Instrument

IVM: Ion Velocity Metere Instrument

MIGHTI:The Michelson Interferometer for Global High-resolution Thermospheric Imaging

NC: NetCDF

Comments

Special software required to use data: IDL

Disciplines

Physics

License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

Identifier

https://doi.org/10.26078/28kt-b283

Checksum

715c2b0b8fb70140910eeaf0ac33f000

Additional Files

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ICON_L2-3_MIGHTI-B_Temperature_2020-07-15_v04r000.ZIP (4565 kB)
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MPFIT.pro (138 kB)
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ReadICON_Temp2a.pro (4 kB)
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tidefit.pro (5 kB)
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