Seasonal Variation of Thermospheric Composition Observed by NASA GOLD

We examine characteristics of the seasonal variation of thermospheric composition using column number density ratio ∑O/N2 observed by the NASA Global Observations of Limb and Disk (GOLD) mission from low-mid to mid-high latitudes. We found that the ∑O/N2 seasonal variation is hemispherically asymmetric: in the southern hemisphere, it exhibits the well-known annual and seminal pattern, with highs near the equinoxes, and primary and secondary lows near the solstices. In the northern hemisphere, it is dominated by an annual variation, with a minor semiannual component with the highs shifting towards the wintertime. We also found that the durations of the December and June solstice seasons in terms of thermospheric composition are highly variable with longitude. Our hypothesis is that ion-neutral collisional heating in the equatorial ionization anomaly region and auroral Joule heating play substantial roles in this longitudinal dependency.

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  • Liying Qian
    UCAR/NCAR - High Altitude Observatory

Temporal Range

  • Begin:  2018-10-05
    End:  2021-09-30


Resource Type dataset
Temporal Range Begin 2018-10-05
Temporal Range End 2021-09-30
Temporal Resolution N/A
Bounding Box North Lat 60.0
Bounding Box South Lat -60.0
Bounding Box West Long -180.0
Bounding Box East Long 180.0
Spatial Representation N/A
Spatial Resolution 5.0 degreesLatitude
5.0 degreesLongitude
Related Links N/A
Additional Information N/A
Resource Format application/octet-stream
Standardized Resource Format Binary
Asset Size N/A
Legal Constraints

Creative Commons Attribution 4.0 International License.

Access Constraints None
Software Implementation Language N/A

Resource Support Name Liying Qian
Resource Support Email
Resource Support Organization UCAR/NCAR - High Altitude Observatory
Distributor N/A
Metadata Contact Name GDEX Curator
Metadata Contact Email
Metadata Contact Organization UCAR/NCAR - GDEX

Author Qian, Liying
Publisher UCAR/NCAR - GDEX
Publication Date 2022-02-10
Digital Object Identifier (DOI)
Alternate Identifier N/A
Resource Version N/A
Topic Category N/A
Progress N/A
Metadata Date 2022-02-10T13:37:35-07:00
Metadata Record Identifier edu.ucar.gdex::4b271389-d4b2-47f9-a394-76c2a69f1f74
Metadata Language eng; USA
Suggested Citation Qian, Liying. (2022). Seasonal Variation of Thermospheric Composition Observed by NASA GOLD. UCAR/NCAR - GDEX. Accessed 08 December 2023.

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