Identification

Title

Day‐to‐day variability of prereversal enhancement in the vertical ion drift in response to large‐scale forcing from the lower atmosphere

Abstract

Equatorial plasma bubbles (EPBs) are plasma density irregularities found in the equatorial ionosphere after sunset and are closely related to the upward ExB drift before it reverses to the generally downward direction at nighttime, referred to as prereversal enhancement (PRE). Although the seasonal variation of PRE and EPB have been generally associated with F and E region dynamo, large variability of EPB occurrence from one day to the next is still puzzling and poses a challenge for equatorial space weather research and forecast. This study shows that the PRE variability is strongly affected by the large-scale lower atmosphere variability on day-to-day weather scales through the E region dynamo at middle latitudes in the summer hemisphere. The whole atmosphere general circulation model with interactive ionosphere electrodynamics employed in the study does not resolve EPB due to insufficient model resolution, but EPB occurrence rate can be deduced from the simulated PRE using an empirical relation. The deduced EPB rate is in good agreement with the observed rates, suggesting the important role of large-scale dynamics and electrodynamics in preconditioning EPB and the feasibility of probabilistic forecast of EPB using a whole atmosphere model.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7cf9t9d

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

2020-04-01T00:00:00Z

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