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SUBROUTINE readsulfate(r_day, first, sulfate) |
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! From LMDZ4/libf/phylmd/readsulfate.F,v 1.2 2005/05/19 08:27:15 fairhead |
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use dimens_m |
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use dimphy |
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use temps |
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use SUPHEC_M |
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use chem |
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IMPLICIT none |
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|
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! Content: |
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! -------- |
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! This routine reads in monthly mean values of sulfate aerosols and |
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! returns a linearly interpolated daily-mean field. |
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! |
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! |
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! Author: |
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! ------- |
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! Johannes Quaas (quaas@lmd.jussieu.fr) |
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! 26/04/01 |
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! |
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! Modifications: |
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! -------------- |
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! 21/06/01: Make integrations of more than one year possible ;-) |
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! ATTENTION!! runs are supposed to start with Jan, 1. 1930 |
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! (rday=1) |
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! |
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! 27/06/01: Correction: The model always has 360 days per year! |
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! 27/06/01: SO4 concentration rather than mixing ratio |
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! 27/06/01: 10yr-mean-values to interpolate |
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! 20/08/01: Correct the error through integer-values in interpolations |
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! 21/08/01: Introduce flag to read in just one decade |
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! |
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! |
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! Input: |
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! ------ |
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double precision, intent(in):: r_day ! Day of integration |
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LOGICAL, intent(in):: first ! First timestep |
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! (and therefore initialization necessary) |
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! |
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! Output: |
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! ------- |
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double precision sulfate (klon, klev) ! Mass of sulfate (monthly mean data, |
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! from file) [ug SO4/m3] |
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! |
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! Local Variables: |
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! ---------------- |
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INTEGER i, ig, k, it |
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INTEGER j, iday, ny, iyr, iyr1, iyr2 |
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parameter (ny=jjm+1) |
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|
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INTEGER ismaller |
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!JLD INTEGER idec1, idec2 ! The two decadal data read ini |
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CHARACTER*4 cyear |
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INTEGER im, day1, day2, im2 |
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double precision so4_1(iim, jjm+1, klev, 12) |
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double precision so4_2(iim, jjm+1, klev, 12) ! The sulfate distributions |
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|
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double precision so4(klon, klev, 12) ! SO4 in right dimension |
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SAVE so4 |
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double precision so4_out(klon, klev) |
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SAVE so4_out |
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|
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LOGICAL lnewday |
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LOGICAL lonlyone |
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PARAMETER (lonlyone=.FALSE.) |
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|
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iday = INT(r_day) |
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! Get the year of the run |
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iyr = iday/360 |
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! Get the day of the actual year: |
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iday = iday-iyr*360 |
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! 0.02 is about 0.5/24, namly less than half an hour |
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lnewday = (r_day-FLOAT(iday).LT.0.02) |
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|
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! --------------------------------------------- |
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! All has to be done only, if a new day begins! |
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! --------------------------------------------- |
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IF (lnewday.OR.first) THEN |
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im = iday/30 +1 ! the actual month |
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! annee_ref is the initial year (defined in temps.h) |
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iyr = iyr + annee_ref |
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! Do I have to read new data? (Is this the first day of a year?) |
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IF (first.OR.iday.EQ.1.) THEN |
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! Initialize values |
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DO it=1,12 |
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DO k=1,klev |
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DO i=1,klon |
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so4(i,k,it)=0. |
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ENDDO |
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ENDDO |
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ENDDO |
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IF (iyr .lt. 1850) THEN |
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cyear='.nat' |
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WRITE(*,*) 'getso4 iyr=', iyr,' ',cyear |
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CALL getso4fromfile(cyear, so4_1) |
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ELSE IF (iyr .ge. 2100) THEN |
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cyear='2100' |
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WRITE(*,*) 'getso4 iyr=', iyr,' ',cyear |
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CALL getso4fromfile(cyear, so4_1) |
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ELSE |
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! Read in data: |
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! a) from actual 10-yr-period |
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IF (iyr.LT.1900) THEN |
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iyr1 = 1850 |
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iyr2 = 1900 |
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ELSE IF (iyr.ge.1900.and.iyr.lt.1920) THEN |
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iyr1 = 1900 |
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iyr2 = 1920 |
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ELSE |
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iyr1 = INT(iyr/10)*10 |
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iyr2 = INT(1+iyr/10)*10 |
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ENDIF |
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WRITE(cyear,'(I4)') iyr1 |
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WRITE(*,*) 'getso4 iyr=', iyr,' ',cyear |
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CALL getso4fromfile(cyear, so4_1) |
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! If to read two decades: |
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IF (.NOT.lonlyone) THEN |
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! b) from the next following one |
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WRITE(cyear,'(I4)') iyr2 |
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WRITE(*,*) 'getso4 iyr=', iyr,' ',cyear |
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CALL getso4fromfile(cyear, so4_2) |
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|
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ENDIF |
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! Interpolate linarily to the actual year: |
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DO it=1,12 |
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DO k=1,klev |
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DO j=1,jjm |
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DO i=1,iim |
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so4_1(i,j,k,it)=so4_1(i,j,k,it) & |
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- FLOAT(iyr-iyr1)/FLOAT(iyr2-iyr1) & |
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* (so4_1(i,j,k,it) - so4_2(i,j,k,it)) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDIF !lonlyone |
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! Transform the horizontal 2D-field into the physics-field |
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! (Also the levels and the latitudes have to be inversed) |
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DO it=1,12 |
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DO k=1, klev |
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! a) at the poles, use the zonal mean: |
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DO i=1,iim |
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! North pole |
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so4(1,k,it)=so4(1,k,it)+so4_1(i,jjm+1,klev+1-k,it) |
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! South pole |
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so4(klon,k,it)=so4(klon,k,it)+so4_1(i,1,klev+1-k,it) |
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ENDDO |
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so4(1,k,it)=so4(1,k,it)/FLOAT(iim) |
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so4(klon,k,it)=so4(klon,k,it)/FLOAT(iim) |
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! b) the values between the poles: |
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ig=1 |
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DO j=2,jjm |
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DO i=1,iim |
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ig=ig+1 |
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if (ig.gt.klon) write (*,*) 'shit' |
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so4(ig,k,it) = so4_1(i,jjm+1-j,klev+1-k,it) |
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ENDDO |
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ENDDO |
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IF (ig.NE.klon-1) STOP 'Error in readsulfate (var conversion)' |
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ENDDO ! Loop over k (vertical) |
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ENDDO ! Loop over it (months) |
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|
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ENDIF ! Had to read new data? |
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! Interpolate to actual day: |
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IF (iday.LT.im*30-15) THEN |
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! in the first half of the month use month before and actual month |
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im2=im-1 |
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day2 = im2*30-15 |
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day1 = im2*30+15 |
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IF (im2.LE.0) THEN |
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! the month is january, thus the month before december |
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im2=12 |
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ENDIF |
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DO k=1,klev |
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DO i=1,klon |
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sulfate(i,k) = so4(i,k,im2) & |
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- FLOAT(iday-day2)/FLOAT(day1-day2) & |
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* (so4(i,k,im2) - so4(i,k,im)) |
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IF (sulfate(i,k).LT.0.) THEN |
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IF (iday-day2.LT.0.) write(*,*) 'iday-day2',iday-day2 |
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IF (so4(i,k,im2) - so4(i,k,im).LT.0.) & |
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write(*,*) 'so4(i,k,im2) - so4(i,k,im)', & |
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so4(i,k,im2) - so4(i,k,im) |
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IF (day1-day2.LT.0.) write(*,*) 'day1-day2',day1-day2 |
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stop 'sulfate' |
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endif |
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ENDDO |
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ENDDO |
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ELSE |
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! the second half of the month |
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im2=im+1 |
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IF (im2.GT.12) THEN |
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! the month is december, the following thus january |
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im2=1 |
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ENDIF |
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day2 = im*30-15 |
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day1 = im*30+15 |
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DO k=1,klev |
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DO i=1,klon |
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sulfate(i,k) = so4(i,k,im2) & |
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- FLOAT(iday-day2)/FLOAT(day1-day2) & |
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* (so4(i,k,im2) - so4(i,k,im)) |
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IF (sulfate(i,k).LT.0.) THEN |
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IF (iday-day2.LT.0.) write(*,*) 'iday-day2',iday-day2 |
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IF (so4(i,k,im2) - so4(i,k,im).LT.0.) & |
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write(*,*) 'so4(i,k,im2) - so4(i,k,im)', & |
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so4(i,k,im2) - so4(i,k,im) |
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IF (day1-day2.LT.0.) write(*,*) 'day1-day2',day1-day2 |
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stop 'sulfate' |
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endif |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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!JLD ! The sulfate concentration [molec cm-3] is read in. |
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!JLD ! Convert it into mass [ug SO4/m3] |
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!JLD ! masse_so4 in [g/mol], n_avogadro in [molec/mol] |
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! The sulfate mass [ug SO4/m3] is read in. |
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DO k=1,klev |
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DO i=1,klon |
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!JLD sulfate(i,k) = sulfate(i,k)*masse_so4 |
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!JLD . /n_avogadro*1.e+12 |
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so4_out(i,k) = sulfate(i,k) |
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IF (so4_out(i,k).LT.0) & |
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stop 'WAS SOLL DER SCHEISS ? ' |
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ENDDO |
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ENDDO |
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ELSE ! if no new day, use old data: |
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DO k=1,klev |
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DO i=1,klon |
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sulfate(i,k) = so4_out(i,k) |
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IF (so4_out(i,k).LT.0) & |
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stop 'WAS SOLL DER SCHEISS ? ' |
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ENDDO |
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ENDDO |
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ENDIF ! Did I have to do anything (was it a new day?) |
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|
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END SUBROUTINE readsulfate |
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