|
Last change
on this file since 374 was
135,
checked in by aslmd, 14 years ago
|
|
CHANGEMENT ARBORESCENCE ETAPE 2 -- NON COMPLET
|
|
File size:
981 bytes
|
| Line | |
|---|
| 1 | subroutine watersat_grad(T,qsat,dqsat) |
|---|
| 2 | |
|---|
| 3 | use watercommon_h, only: T_coup, RLVTT, RCPD |
|---|
| 4 | implicit none |
|---|
| 5 | |
|---|
| 6 | !================================================================== |
|---|
| 7 | ! Purpose |
|---|
| 8 | ! ------- |
|---|
| 9 | ! Compute the water mass mixing ratio at saturation (kg/kg) |
|---|
| 10 | ! for a given pressure (Pa) and temperature (K) |
|---|
| 11 | ! |
|---|
| 12 | ! Authors |
|---|
| 13 | ! ------- |
|---|
| 14 | ! Robin Wordsworth (2010) |
|---|
| 15 | ! |
|---|
| 16 | !================================================================== |
|---|
| 17 | |
|---|
| 18 | ! input |
|---|
| 19 | real T,qsat |
|---|
| 20 | |
|---|
| 21 | ! output |
|---|
| 22 | real dqsat |
|---|
| 23 | |
|---|
| 24 | if (T.lt.T_coup) then ! solid / vapour |
|---|
| 25 | dqsat = RLVTT/RCPD*qsat*(3.56654/T & |
|---|
| 26 | +2484.896*LOG(10.)/T**2 & |
|---|
| 27 | -0.00320991*LOG(10.)) |
|---|
| 28 | else ! liquid / vapour |
|---|
| 29 | dqsat = RLVTT/RCPD*qsat*LOG(10.)* & |
|---|
| 30 | (2948.964/T**2-5.028/LOG(10.)/T & |
|---|
| 31 | +25.21935*2999.924/T**2*EXP(-2999.924/T) & |
|---|
| 32 | +29810.16*0.0699382*EXP(-0.0699382*T)) |
|---|
| 33 | end if |
|---|
| 34 | |
|---|
| 35 | return |
|---|
| 36 | end subroutine watersat_grad |
|---|
| 37 | |
|---|
Note: See
TracBrowser
for help on using the repository browser.
