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Expose MSIS F10.7 forcing for GEOS-MLT ion drag #135

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Merged
Andrew-won-Lee merged 1 commit into from
Oct 5, 2026
Merged

Expose MSIS F10.7 forcing for GEOS-MLT ion drag #135

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28 changes: 23 additions & 5 deletions NRL_MSIS/msis_wrapper.F90
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Original file line number Diff line number Diff line change
Expand Up @@ -7,10 +7,11 @@ module msis_wrapper
use msis_init, only : msisinit

implicit none

private

public :: msis_wrapper_init, msis_prepare_time, msis_point
public :: msis_get_current_f107

! --- Local Variables ---
integer, allocatable :: r_iyd(:) ! stored as year*1000 + doy
Expand Down Expand Up @@ -63,7 +64,7 @@ subroutine msis_wrapper_init()
end if

call load_f107_file()

if (.not. loaded) then
print *, 'GEOS_MLT_MSIS_ERROR: F107/AP table was not loaded.'
error stop 'GEOS-MLT MSIS initialization failed'
Expand Down Expand Up @@ -118,6 +119,23 @@ subroutine msis_prepare_time(year, doy, ut_seconds)
end if
end subroutine msis_prepare_time


subroutine msis_get_current_f107(f107_daily, f107_81day)
! Return the F10.7 values selected by the most recent msis_prepare_time call.
! This allows other GEOS-MLT components, such as IRI, to use the same
! time-varying solar forcing as MSIS.
real, intent(out) :: f107_daily
real, intent(out) :: f107_81day

if (.not. index_cache_ready) then
error stop 'Call msis_prepare_time before msis_get_current_f107'
end if

f107_daily = cached_f107
f107_81day = cached_f107a
end subroutine msis_get_current_f107


subroutine msis_point(year, doy, ut_seconds, alt, glat, glong, stl, &
O_out, N2_out, O2_out, T_out)
integer, intent(in) :: year, doy, ut_seconds
Expand Down Expand Up @@ -149,7 +167,7 @@ subroutine msis_point(year, doy, ut_seconds, alt, glat, glong, stl, &
ut = real(ut_seconds, kind=4)
mass = 1
ap(:) = cached_ap

! Logging
!print *, 'F107, ap, stl, alt:', cached_f107, ap, stl, alt
!print *, iyd, ut
Expand Down Expand Up @@ -299,7 +317,7 @@ integer function find_record(iyd, hour)
end function find_record

function day_of_year(year, month, day) result(doy)

integer :: doy
integer, intent(in) :: year, month, day
integer :: mdays(12), m
Expand Down
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