Identification

Title

Investigation of the southern hemisphere mid‐high latitude thermospheric ∑o/n2 responses to the Space‐X storm

Abstract

The geomagnetic storm on February 3, 2022 caused the loss of 38 Starlink satellites of Space-X. The Global-scale Observations of the Limb and Disk (GOLD) observations and Multi-Scale Atmosphere Geospace Environment (MAGE) model simulations are utilized to investigate the thermospheric composition responses to the Space-X storm. The percentage difference of the GOLD observed thermospheric O and N-2 column density ratio (n-ary sumation sigma O/N-2) between the storm time (February 3, Day-of-Year [DOY] 34) and quiet time (DOY 32) shows a depletion region in the local noon sector mid-high latitudes in the southern hemisphere, which corresponds to the east side of GOLD field-of-view (FOV). This is different from the classic theory of thermospheric composition disturbance during geomagnetic storms, under which the n-ary sumation sigma O/N-2 depletion is usually generated at local midnight and high latitudes, and thus, appear on the west side of GOLD FOV. MAGE simulations reproduce the observations qualitatively and indicate that the n-ary sumation sigma O/N-2 depletion is formed due to strong upwelling in the local morning caused by strong Joule heating. Interestingly, enhanced equatorward winds appear near local midnight, but also in the local morning sector, which transports n-ary sumation sigma O/N-2 depletion equatorward. The depletion corotates toward the local afternoon and is observed in the GOLD FOV. The equatorward winds in the local morning are due to the ion-neutral coupling under the conditions of a dominant positive interplanetary magnetic field east-west component (B-y) during the storm.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d74j0k2t

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Text

originating controlled vocabulary

title

Resource Type

reference date

date type

publication

effective date

2016-01-01T00:00:00Z

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2023-03-10T00:00:00Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Limitations on public access

None

Responsible organisations

Responsible party

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact