AFFECTS
Advanced Forecast For Ensuring Communications Through Space
 

 

Dst index

The Dst index is an index of magnetic activity derived from a network of near-equatorial geomagnetic observatories that measures the intensity of the globally symmetrical equatorial electrojet (the "ring current"). Dst is maintained at WDC Kyoto and NGDC.

Provision of Dst index data for AFFECTS

NRT data and data of the last month required for different FSI processing modules are internally provided in the FSI. Automatic processes are established, downloading the corresponding files (see below) from the website and ftp servers and storing them on the FSI Pickup Point. The Pickup Point inhabits the input data for the FSI. All data stored there is then provided to the FSI processing modules.

For the processor development and scientific purpose, the geomagnetic indices can be directly downloaded from the websites and ftp servers given below.

Dst Observations in near real time

Dst Forecast

Forecast of Dst is provided in the course of the AFFECTS project by SRI NASU-NSAU.

Product description: DSTForecast_INFO.pdf

Dst Archive

http://wdc.kugi.kyoto-u.ac.jp/dst_final/index.html

ftp://ftp.ngdc.noaa.gov/STP/GEOMAGNETIC_DATA/INDICES/DST/

Use of Dst index data in AFFECTS

The data will be primarily used to develop and validate the forecasts proposed in WP4 and WP5. The use of the geomagnetic indices data by the AFFECTS users/beneficiaries is described in the table below.

Description of application

Beneficiary

Data access

Development of forecast for geomagnetic indices

SRI-NASU-NSAU

online

Implementation of operational forecast tool for forecasting geomagnetic indices

SRI-NASU-NSAU

FSI

Preliminary analyses during the development of a perturbation TEC model

DLR

Online

Implementation of forecast tool for forecasting perturbed TEC

DLR

FSI

Comparison of Dst, Kp, ap, Ap and UoT magnetometer data (also for items below) with forecasted activity levels based on solar observations, validation of solar wind and CME forecasts

UGOE

Online

Determination of resulting geomagnetic disturbance levels in response to solar wind parameters measured by ACE, validation of solar wind – magnetosphere coupling functions

UGOE

Online

Analysis of magnetospheric ionospheric coupling during geomagnetic storms

UGOE

Online

Analysis of polar electro jet and ring current distributions during geomagnetic storms, with special emphasis on polar electro jet movements to lower latitudes, including dTEC variations

UGOE

Online

Comparisons of magnetospheric and ionospheric disturbance levels of present and past storms

UGOE

Online

Integration into space weather mobile phone application (later)

UGOE

Online