Identification

Title

Multiple longitude sector storm-enhanced density (SED) and long-lasting subauroral polarization stream (SAPS) during the 26–28 February 2023 geomagnetic storm

Abstract

This paper conducts a multi-instrument analysis and data assimilation study of midlatitude ionospheric disturbances over the European and North American longitude sectors during a strong geomagnetic storm on 26-28 February 2023. The study uses a set of ground-based (GNSS receivers, ionosondes) observations, space-borne (DMSP, GOLD) measurements, and a new TEC-based ionospheric data assimilation system (TIDAS). We observed a series of distinct storm-time features with regard to storm-enhanced density (SED) and subauroral polarization stream (SAPS) as follows: (a) Under multiple ring current intensifications, the storm-time subauroral ionosphere produced long-lasting duskside SAPS for similar to 36 hr along with considerable dawnside SAPS for several hours. (b) Associated with long-lived SAPS, strong SED occurred consecutively in the European longitude sector near local noon during a positive ionospheric storm and later in the North American longitude sector near local dusk during a negative ionospheric storm. (c) The 3-D morphology of SED in multiple longitude sectors was reconstructed using TIDAS data assimilation technique with fine-scale details, which revealed a narrow ionospheric plasma channel with electron density enhancement and layer uplift.

Resource type

document

Resource locator

Unique resource identifier

code

https://n2t.org/ark:/85065/d77m0czm

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

2023-09-01T00:00:00Z

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