|
Last change
on this file since 3538 was
2696,
checked in by kanani, 7 years ago
|
|
Merge of branch palm4u into trunk
|
|
File size:
690 bytes
|
| Line | |
|---|
| 1 | SUBROUTINE Update_SUN() |
|---|
| 2 | |
|---|
| 3 | IMPLICIT NONE |
|---|
| 4 | INCLUDE 'KPP_ROOT_Parameters.h' |
|---|
| 5 | INCLUDE 'KPP_ROOT_Global.h' |
|---|
| 6 | |
|---|
| 7 | KPP_REAL SunRise, SunSet |
|---|
| 8 | KPP_REAL Thour, Tlocal, Ttmp, PI |
|---|
| 9 | PARAMETER (PI = 3.14159265358979d0) |
|---|
| 10 | |
|---|
| 11 | SunRise = 4.5 |
|---|
| 12 | SunSet = 19.5 |
|---|
| 13 | Thour = TIME/3600. |
|---|
| 14 | Tlocal = Thour - (INT(Thour)/24)*24 |
|---|
| 15 | |
|---|
| 16 | IF ((Tlocal.GE.SunRise).AND.(Tlocal.LE.SunSet)) THEN |
|---|
| 17 | Ttmp = (2.0*Tlocal-SunRise-SunSet)/(SunSet-SunRise) |
|---|
| 18 | IF (Ttmp.GT.0) THEN |
|---|
| 19 | Ttmp = Ttmp*Ttmp |
|---|
| 20 | ELSE |
|---|
| 21 | Ttmp = -Ttmp*Ttmp |
|---|
| 22 | END IF |
|---|
| 23 | SUN = ( 1.0 + COS(PI*Ttmp) )/2.0 |
|---|
| 24 | ELSE |
|---|
| 25 | SUN = 0.0 |
|---|
| 26 | END IF |
|---|
| 27 | |
|---|
| 28 | RETURN |
|---|
| 29 | END |
|---|
| 30 | |
|---|
Note: See
TracBrowser
for help on using the repository browser.
