F10.7 Solar Flux & Ap Indices

Computes F10.7 solar flux and associated Ap magnetic indices for built-in function 'atmosnrlmsise00'

Appreciable errors in MSIS00 modeled temperatures can occur for altitudes above 75 km if solar flux and magnetic indices deviate significantly from their default values. This routine automatically downloads needed solar flux and magnetic indices from ftp.ngdc.noaa.gov and formats them for input to atmosnrlmsise00.

Example:

year = 2010;
doy = 216;
uts = 80000;

[x y z] = f107_aph(year,doy,uts);

alt = linspace(60000,105000,100);
lat = 40;
lon = -105;

[T rho] = atmosnrlmsise00(alt,lat,lon,year,doy,uts,x,y,z);