Identification

Title

Comparisons of ion density from IVM with the GNSS differential TEC-derived electron density on the FORMOSAT-7/COSMIC-2 mission

Abstract

We report on a new method to derive the on-orbit electron density using the Tri Global Navigation Satellite System (GNSS) Radio-occultation System (Tri-GNSS Radio occultation System (TGRS)) differential total electron content data and compare it to the Constellation Observing System for Meteorology Ionosphere and Climate-2 Ion Velocity Meter (IVM) ion density data. We found that the IVM ion density is about 8%-15% lower than the TGRS derived density at the insertion orbit (similar to 710 km) and 5% higher at the mission operation orbit (similar to 540 km) for reasons that are currently unknown. Using a linear coefficient, we scaled the IVM data to remove the offset between TGRS-derived electron density and the IVM ion density for the two orbital heights. We believe the scaled IVM densities eliminate any inter-spacecraft discrepancy, making the IVM data suitable for use in high precision multi-satellite scientific investigations of longitudinal and local time variations of non-migrating tides, planetary waves and space weather operational applications.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7fr01c3

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

2022-08-01T00:00:00Z

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