Identification

Title

Dependence of Pedersen conductance in the and regions and their ratio on the solar and geomagnetic activities

Abstract

Ionospheric conductivity plays an important role in the magnetosphere-ionosphere coupling. The altitudinal distribution of Pedersen conductivity gives us a rough idea about the altitudinal distribution of Joule heating at high latitudes, which is of great significance regarding the response of upper atmosphere to geomagnetic energy inputs. Based on the electron density profiles derived from the Constellation Observing System for Meteorology, Ionosphere, and Climate measurements during 2009-2014, Pedersen conductivity has been estimated. A climatologic study of the height-integrated Pedersen conductivity in both E (100-150 km) and F (150-600km) regions, i.e., Sigma(PE) and Sigma(PF), and their ratio (gamma(P)=Sigma(PE)/Sigma(PF)) under different solar and geomagnetic conditions has been conducted. Both Sigma(PE) and Sigma(PF) increase with F-10.7 and Ap indices. Their ratio is smaller at higher solar flux but larger under more disturbed geomagnetic conditions. Meanwhile, an interhemispheric asymmetry has been identified in the Ap and F-10.7 dependencies of gamma(P), which also varies with local time. These results will help to improve our understanding of the variations of the altitudinal energy distribution under different solar and geomagnetic conditions and the interhemispheric asymmetry of the high-latitude electrodynamics.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7f191jh

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

2017-03-01T00:00:00Z

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