[OpenMadrigal-developers] F10.7 Multiday average proposal

Bill Rideout brideout at haystack.mit.edu
Fri Oct 20 11:53:15 EDT 2006


Phil Erickson has suggested we modify out definition of the F10.7 
Multiday average (FBAR).  Right now this is an 81 day average, where the 
81 days the center day, 40 days in the past, and 40 days in the future.  
The problem with this definition is that this parameter is never 
available for any day less than 40 days in the past.  For example, since 
MSIS uses FBAR as an input, this means that MSIS also cannot be run for 
any day less than 40 days in the past. 

Phil has suggested that for any day less than 40 days in the past, we 
calculate FBAR as an average over the most recent 81 days.  From the 
Madrigal point-of-view, this means that every time we reload geophysical 
data, the FBAR values for the latest 40 days might change slightly.  At 
present, FBAR is not loaded into Madrigal for days less than 40 days ago.

We would document this FBAR definition on the Madrigal help pages.  Any 
thoughts?

Bill Rideout



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