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ocssw
V2022
web
ocssw
ocssw_src
src
libswfnav
earthsundist.f
Go to the documentation of this file.
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c --------------------------------------------------------------
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c Subroutine EarthSunDist
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c
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c Returns Earth-Sun distance in AU.
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c
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c Modification History:
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c
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c - More accurrate formulation. B Franz, 26 June 1998.
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c
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c --------------------------------------------------------------
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real*8
function
earthsundist
(day,dutc)
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c
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implicit none
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c
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integer*4
day
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real
*8 dutc
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real
*8 pi2
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real
*8 rjd
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c
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pi2 = 2.d0 * 3.141592654
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rjd = day + dutc/24.0
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c
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c EarthSunDist = 1.D0 + 0.0167 * cos(pi2*(rjd-3.0)/365.0)
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c
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earthsundist
= (1.00014
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. - 0.01671*cos(1.0*pi2*(0.9856002831*rjd-3.4532868)/360.0)
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. - 0.00014*cos(2.0*pi2*(0.9856002831*rjd-3.4532868)/360.0))
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c
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return
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end
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real
#define real
Definition:
DbAlgOcean.cpp:26
earthsundist
real *8 function earthsundist(day, dutc)
Definition:
earthsundist.f:12
