SET now produces an improved version of the JB2008 solar indices (SOLFSMY.TXT.zip) and geomagnetic storm indices (DTCFILE.TXT.zip) which are updated daily.

To run the JB2008 model you will need both the solar and storm indices from the two downloadable files above. The storm indices are generated from hourly Dst values during moderate to high geomagnetic activity, and from 3-hour ap values during low to no storm activity.

If you desire to compute the storm indices yourself then you need to download the code file (DTCMAKEDR_code.zip), which contains the Dst and ap values from 1997 through 2007. You then need to use the updated Dst values (DSTFILE.TXT.zip) and ap values (SOLRESAP.TXT.zip), which are updated here daily. The DTCMAKEDR.FOR program will then generate the new DTCFILE.TXT file. This file is the one above currently being automatically generated on this web site.

Kyoto DST data are reprocessed intermittently for periods over the past year. We regularly check for reprocessed data and update our DSTFILE.TXT, which affects DTCFILE.TXT values. Please be advised that DTCFILE.TXT data may change during the past year. We recommend that the most recent files be used.

Note: if the compressed zip files fail to download, you can acquire the files by opening the text files below in your browser and then saving the text to your disk without the .txt extension.

Indices

SOLFSMY.TXT	DTCFILE.TXT	DSTFILE.TXT	SOLRESAP.TXT