|
Last change
on this file since 2662 was
2,
checked in by lmdz, 25 years ago
|
|
Initial revision
|
-
Property svn:eol-style set to
native
-
Property svn:keywords set to
Author Date Id Revision
|
|
File size:
1.5 KB
|
| Rev | Line | |
|---|
| [2] | 1 | FUNCTION q_sat(kelvin, millibar) |
|---|
| 2 | c |
|---|
| 3 | IMPLICIT none |
|---|
| 4 | c====================================================================== |
|---|
| 5 | c Autheur(s): Z.X. Li (LMD/CNRS) |
|---|
| 6 | c Objet: calculer la vapeur d'eau saturante (formule Centre Euro.) |
|---|
| 7 | c====================================================================== |
|---|
| 8 | c Arguments: |
|---|
| 9 | c kelvin---input-R: temperature en Kelvin |
|---|
| 10 | c millibar--input-R: pression en mb |
|---|
| 11 | c |
|---|
| 12 | c q_sat----output-R: vapeur d'eau saturante en kg/kg |
|---|
| 13 | c====================================================================== |
|---|
| 14 | c |
|---|
| 15 | REAL q_sat, kelvin, millibar |
|---|
| 16 | c |
|---|
| 17 | REAL r2es |
|---|
| 18 | PARAMETER (r2es=611.14 *18.0153/28.9644) |
|---|
| 19 | c |
|---|
| 20 | REAL r3les, r3ies, r3es |
|---|
| 21 | PARAMETER (R3LES=17.269) |
|---|
| 22 | PARAMETER (R3IES=21.875) |
|---|
| 23 | c |
|---|
| 24 | REAL r4les, r4ies, r4es |
|---|
| 25 | PARAMETER (R4LES=35.86) |
|---|
| 26 | PARAMETER (R4IES=7.66) |
|---|
| 27 | c |
|---|
| 28 | REAL rtt |
|---|
| 29 | PARAMETER (rtt=273.16) |
|---|
| 30 | c |
|---|
| 31 | REAL retv |
|---|
| 32 | PARAMETER (retv=28.9644/18.0153 - 1.0) |
|---|
| 33 | c |
|---|
| 34 | REAL zqsat |
|---|
| 35 | REAL temp, pres |
|---|
| 36 | C ------------------------------------------------------------------ |
|---|
| 37 | c |
|---|
| 38 | c |
|---|
| 39 | temp = kelvin |
|---|
| 40 | pres = millibar * 100.0 |
|---|
| 41 | c write(*,*)'kelvin,millibar=',kelvin,millibar |
|---|
| 42 | c write(*,*)'temp,pres=',temp,pres |
|---|
| 43 | c |
|---|
| 44 | IF (temp .LE. rtt) THEN |
|---|
| 45 | r3es = r3ies |
|---|
| 46 | r4es = r4ies |
|---|
| 47 | ELSE |
|---|
| 48 | r3es = r3les |
|---|
| 49 | r4es = r4les |
|---|
| 50 | ENDIF |
|---|
| 51 | c |
|---|
| 52 | zqsat=r2es/pres * EXP ( r3es*(temp-rtt) / (temp-r4es) ) |
|---|
| 53 | zqsat=MIN(0.5,ZQSAT) |
|---|
| 54 | zqsat=zqsat/(1.-retv *zqsat) |
|---|
| 55 | c |
|---|
| 56 | q_sat = zqsat |
|---|
| 57 | c |
|---|
| 58 | RETURN |
|---|
| 59 | END |
|---|
Note: See
TracBrowser
for help on using the repository browser.
