Seasonal Variations of Medium-Scale Waves Observed by ICON-MIGHTI

Chihoko Y. Cullens; Scott L. England; Thomas J. Immel; Astrid Maute; Brian J. Harding; Colin C. Triplett; Jonathan J. Makela; Michael H. Stevens

doi:10.1029/2022GL099383

Seasonal Variations of Medium-Scale Waves Observed by ICON-MIGHTI

Chihoko Y. Cullens, Scott L. England, Thomas J. Immel, Astrid Maute, Brian J. Harding, Colin C. Triplett, Jonathan J. Makela, Michael H. Stevens

Research output: Contribution to journal › Article › peer-review

Abstract

This work presents an analysis of seasonal variations of medium-scale perturbations (∼500 to ∼5,700 km) spanning altitudes from 90 to 250 km using temperature and wind measurements made by the Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) instrument onboard the Ionospheric Connection Explorer (ICON) in the latitude range of 0°–40°N during 2020–2021. Both medium-scale perturbations (MSP) in temperature and winds below ∼120 km show semi-annual variations, whereas annual variations of MSP for winds become dominant between 160 and 250 km. The largest wind MSP was observed at ∼110–120 km throughout the year. Spatial variations of MSP at 90–250 km do not show clear geographic patterns in either temperature or wind. Our analysis suggests both seasonal variations of MSP between 90 and 250 km altitudes are influenced by variation on both the sources of MSP and changes in the background wind.

Original language	English (US)
Article number	e2022GL099383
Journal	Geophysical Research Letters
Volume	49
Issue number	17
DOIs	https://doi.org/10.1029/2022GL099383
State	Published - Sep 16 2022

Keywords

ICON
MIGHTI
gravity waves

ASJC Scopus subject areas

Geophysics
General Earth and Planetary Sciences

Online availability

10.1029/2022GL099383

Library availability

Discover UIUC Full Text

Cite this

@article{b6bbf39a6ace44a085bd8b512bce1343,

title = "Seasonal Variations of Medium-Scale Waves Observed by ICON-MIGHTI",

abstract = "This work presents an analysis of seasonal variations of medium-scale perturbations (∼500 to ∼5,700 km) spanning altitudes from 90 to 250 km using temperature and wind measurements made by the Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) instrument onboard the Ionospheric Connection Explorer (ICON) in the latitude range of 0°–40°N during 2020–2021. Both medium-scale perturbations (MSP) in temperature and winds below ∼120 km show semi-annual variations, whereas annual variations of MSP for winds become dominant between 160 and 250 km. The largest wind MSP was observed at ∼110–120 km throughout the year. Spatial variations of MSP at 90–250 km do not show clear geographic patterns in either temperature or wind. Our analysis suggests both seasonal variations of MSP between 90 and 250 km altitudes are influenced by variation on both the sources of MSP and changes in the background wind.",

keywords = "ICON, MIGHTI, gravity waves",

author = "Cullens, {Chihoko Y.} and England, {Scott L.} and Immel, {Thomas J.} and Astrid Maute and Harding, {Brian J.} and Triplett, {Colin C.} and Makela, {Jonathan J.} and Stevens, {Michael H.}",

year = "2022",

month = sep,

day = "16",

doi = "10.1029/2022GL099383",

language = "English (US)",

volume = "49",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "John Wiley & Sons, Ltd.",

number = "17",

}

TY - JOUR

T1 - Seasonal Variations of Medium-Scale Waves Observed by ICON-MIGHTI

AU - Cullens, Chihoko Y.

AU - England, Scott L.

AU - Immel, Thomas J.

AU - Maute, Astrid

AU - Harding, Brian J.

AU - Triplett, Colin C.

AU - Makela, Jonathan J.

AU - Stevens, Michael H.

PY - 2022/9/16

Y1 - 2022/9/16

N2 - This work presents an analysis of seasonal variations of medium-scale perturbations (∼500 to ∼5,700 km) spanning altitudes from 90 to 250 km using temperature and wind measurements made by the Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) instrument onboard the Ionospheric Connection Explorer (ICON) in the latitude range of 0°–40°N during 2020–2021. Both medium-scale perturbations (MSP) in temperature and winds below ∼120 km show semi-annual variations, whereas annual variations of MSP for winds become dominant between 160 and 250 km. The largest wind MSP was observed at ∼110–120 km throughout the year. Spatial variations of MSP at 90–250 km do not show clear geographic patterns in either temperature or wind. Our analysis suggests both seasonal variations of MSP between 90 and 250 km altitudes are influenced by variation on both the sources of MSP and changes in the background wind.

AB - This work presents an analysis of seasonal variations of medium-scale perturbations (∼500 to ∼5,700 km) spanning altitudes from 90 to 250 km using temperature and wind measurements made by the Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) instrument onboard the Ionospheric Connection Explorer (ICON) in the latitude range of 0°–40°N during 2020–2021. Both medium-scale perturbations (MSP) in temperature and winds below ∼120 km show semi-annual variations, whereas annual variations of MSP for winds become dominant between 160 and 250 km. The largest wind MSP was observed at ∼110–120 km throughout the year. Spatial variations of MSP at 90–250 km do not show clear geographic patterns in either temperature or wind. Our analysis suggests both seasonal variations of MSP between 90 and 250 km altitudes are influenced by variation on both the sources of MSP and changes in the background wind.

KW - ICON

KW - MIGHTI

KW - gravity waves

UR - http://www.scopus.com/inward/record.url?scp=85138002206&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85138002206&partnerID=8YFLogxK

U2 - 10.1029/2022GL099383

DO - 10.1029/2022GL099383

M3 - Article

AN - SCOPUS:85138002206

SN - 0094-8276

VL - 49

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 17

M1 - e2022GL099383

ER -

Seasonal Variations of Medium-Scale Waves Observed by ICON-MIGHTI

Abstract

Keywords

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this