|
Last change
on this file since 3994 was
2696,
checked in by kanani, 7 years ago
|
|
Merge of branch palm4u into trunk
|
|
File size:
704 bytes
|
| Line | |
|---|
| 1 | SUBROUTINE Update_SUN() |
|---|
| 2 | !USE KPP_ROOT_Parameters |
|---|
| 3 | !USE KPP_ROOT_Global |
|---|
| 4 | |
|---|
| 5 | IMPLICIT NONE |
|---|
| 6 | |
|---|
| 7 | KPP_REAL :: SunRise, SunSet |
|---|
| 8 | KPP_REAL :: Thour, Tlocal, Ttmp |
|---|
| 9 | ! PI - Value of pi |
|---|
| 10 | KPP_REAL, PARAMETER :: PI = 3.14159265358979d0 |
|---|
| 11 | |
|---|
| 12 | SunRise = 4.5_dp |
|---|
| 13 | SunSet = 19.5_dp |
|---|
| 14 | Thour = TIME/3600.0_dp |
|---|
| 15 | Tlocal = Thour - (INT(Thour)/24)*24 |
|---|
| 16 | |
|---|
| 17 | IF ((Tlocal>=SunRise).AND.(Tlocal<=SunSet)) THEN |
|---|
| 18 | Ttmp = (2.0*Tlocal-SunRise-SunSet)/(SunSet-SunRise) |
|---|
| 19 | IF (Ttmp.GT.0) THEN |
|---|
| 20 | Ttmp = Ttmp*Ttmp |
|---|
| 21 | ELSE |
|---|
| 22 | Ttmp = -Ttmp*Ttmp |
|---|
| 23 | END IF |
|---|
| 24 | SUN = ( 1.0_dp + COS(PI*Ttmp) )/2.0_dp |
|---|
| 25 | ELSE |
|---|
| 26 | SUN = 0.0_dp |
|---|
| 27 | END IF |
|---|
| 28 | |
|---|
| 29 | END SUBROUTINE Update_SUN |
|---|
| 30 | |
|---|
Note: See
TracBrowser
for help on using the repository browser.
