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Nowcast and Forecast Indices for Atmospheric Drag Calculation
This page provides nowcasts and forecasts of geomagnetic and solar indices needed for atmospheric modelling in support of atmospheric drag calculation.
Available products (please make a selection):
Selection time interval:
Start: End:
Format: JSON CSV PNG

This web page forms part of the European Space Agency's network of space weather service development activities, and is supported under ESA contract number 4000134036/21/D/MRP. For further product-related information or enquiries contact helpdesk. E-mail: helpdesk.swe@esa.int

All publications and presentations using data obtained from this site should acknowledge the appropriate data provider(s) from this list:

and The ESA Space Safety Programme.

For further information about space weather in the ESA Space Safety Programme see: www.esa.int/spaceweather

Access the ESA SWE portal here: swe.ssa.esa.int


Web interface usage:

  1. Select the desired product from the "Available Products" tab.
  2. Select the desired time interval or click on the "Last week" button for the last week of available data for the chosen product.
    Note: For forecast products, the selected date represents the date when the forecast is made.
  3. Choose the format :
    • JSON - JavaScript Object Notation
    • CSV - Comma-separated Values, provided as a downloadable file: result.txt
    • PNG - Portable Network Graphics file, resolution 2000x1000 pixels
  4. Click Submit

REST interface usage:

Our service provides access via a REST interface in the following format:
https://ssa.spacescience.ro/forecast.php?parameter=&output_type=&start_date=&end_date=
  • parameter: desired product. Product name for REST query can be obtained either from the Detailed description page or, after selecting the desired product, from the "Selected Product Details" tab.
  • output_type: can be JSON, CSV or PNG
  • start_date: start of the desired interval in UTC
  • end_date: end of the desired interval in UTC
Note: All parameters are mandatory and for forecast products, the selected date represents the date when the forecast is made.

Example :

For obtaining the Sunspot Number Nowcast 1-day (SIDC) for the interval 2017-06-14 00:00:00 - 2017-06-21 00:00:00, in JSON format, the query is:
https://ssa.spacescience.ro/forecast.php?parameter=EISN_SIDC&output_type=JSON&start_date=2017-06-14%2000:00:00&end_date=2017-06-21%2000:00:00

Multiple parameters can be obtained using repeated queries.