SWACI - Total Electron Content (TEC) Level 2 - Europe

SWACI is a research project of DLR supported by the State Government of Mecklenburg-Vorpommern. Radio signals, transmitted by modern communication and navigation systems may be heavily disturbed by space weather hazards. Thus, severe temporal and spatial changes of the electron density in the ionosphere may significantly degrade the signal quality of various radio systems which even may lead to a complete loss of the signal. By providing specific space weather information, in particular now- and forecast of the ionospheric state, the accuracy and reliability of impacted communication and navigation systems shall be improved.

The total electron content (TEC) is defined as the integral of the electron density along the ray path between satellite and receiver. Thus, TEC provides the number of electrons per square meter. The most frequently used unit is 1TECU = 1x1016 electrons / m2.

TEC is derived from dual frequency code and carrier phase measurements provided by Global Navigation Satellite Systems (GNSS). SWACI uses GPS measurements from various European GNSS networks such as the International GNSS Service (IGS), European Reference Frame (EUREF), Norwegian Mapping Authority (NMA), and ascos distributed by the Federal Agency of Cartography and Geodesy (BKG) Frankfurt. The global TEC maps are mainly created by using data provided by the International GNSS Service Real-Time Pilot Project (IGS-RTPP).

To generate TEC maps of vertical TEC, the slant measurements have to be transformed to the vertical. In a first approximation the ionospheric range error in GNSS is proportional to TEC.

These TEC maps are used to derive latitudinal and zonal gradients, rate of change of TEC (5 min increments), 27 days medians, hourly forecasts of TEC, and corresponding error estimates.

Spatial resolution (latitude x longitude): 2 °x 2° (Europe), 2.5° x 5° (globally)

 
Citation proposal
German Aerospace Center (DLR). SWACI - Total Electron Content (TEC) Level 2 - Europe. https://gdk.gdi-de.org/geonetwork/srv/api/records/9520a2d1-2e69-42e7-85ca-a902b83a93a9
 

Simple

Date ( Creation )
2015-03-10T00:00:00
Edition
Identifier
https://geoservice.dlr.de/catalogue/srv/metadata/9520a2d1-2e69-42e7-85ca-a902b83a93a9
Presentation form
Digital map
Status
Completed

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  Author

Maintenance and update frequency
Not planned
GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Atmospheric conditions
Keywords
  • urn:eop:DLR:EOWEB:SWACI.GROUNDBASED.TEC.EU.L2
  • SWACI
  • total electron content
  • Ionosphere
  • TEC
  • EU
Use limitation
Conditional
Access constraints
Other restrictions
Use constraints
License
Other constraints

Limited for public use

SWACI License

Spatial representation type
Grid
Denominator
0
Metadata language
eng
Character set
UTF8
Topic category
  • Climatology, meteorology, atmosphere
N
S
E
W


Reference system identifier
EPSG / WGS 84 (EPSG:4326) / 7.4
Distribution format
  • ()

OnLine resource
Ionosphere Monitoring and Prediction Center Homepage  

Ionosphere Monitoring and Prediction Center Homepage

Hierarchy level
Series

Domain consistency

Measure identification
INSPIRE / Conformity_001

Conformance result

Date ( Publication )
2010-12-08
Explanation
See the referenced specification
Pass
true
Statement

For details see:

https://impc.dlr.de/products/

Description
Please refer to https://impc.dlr.de/products/ for more details.

gmd:MD_Metadata

File identifier
9520a2d1-2e69-42e7-85ca-a902b83a93a9   XML
Metadata language
English
Character set
UTF8
Hierarchy level
Series
Hierarchy level name
Dataseries
Date stamp
2024-06-20T14:12:14
Metadata standard name
ISO 19115-1:2014/19139
Metadata standard version
1.0

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