Inputs

Space weather indices are provided here with a 45-day lag between the current day-of-year (DOY). The operational, real-time space weather indices can be requested via UDL.

• SOLFSMY.txt, solar indices (F10, S10, M10, Y10)
• SOLRESAP.txt, geomagnetic 3-hour Ap indices
• DSTFILE.txt, geomagnetic hourly Dst
• DTCFILE.txt, hourly DTC values

Note: JB2008 uses the hourly Dst values during moderate to high geomagnetic activity, and the 3-hour Ap values during low to no storm activity.