Context Navigation

newmicro.F @ 556

Last change on this file since 556 was 535, checked in by lmdzadmin, 20 years ago
Correction pour diagnostiques JLD LF
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 11.4 KB

Rev	Line
[388]	1	SUBROUTINE newmicro (paprs, pplay,ok_newmicro,
	2	. t, pqlwp, pclc, pcltau, pclemi,
[486]	3	. pch, pcl, pcm, pct, pctlwp,
[517]	4	s xflwp, xfiwp, xflwc, xfiwc,
	5	e ok_aie,
	6	e sulfate, sulfate_pi,
	7	e bl95_b0, bl95_b1,
	8	s cldtaupi, re, fl)
[388]	9	IMPLICIT none
	10	c======================================================================
	11	c Auteur(s): Z.X. Li (LMD/CNRS) date: 19930910
	12	c Objet: Calculer epaisseur optique et emmissivite des nuages
	13	c======================================================================
	14	c Arguments:
	15	c t-------input-R-temperature
	16	c pqlwp---input-R-eau liquide nuageuse dans l'atmosphere (kg/kg)
	17	c pclc----input-R-couverture nuageuse pour le rayonnement (0 a 1)
	18	c
[517]	19	c ok_aie--input-L-apply aerosol indirect effect or not
	20	c sulfate-input-R-sulfate aerosol mass concentration [um/m^3]
	21	c sulfate_pi-input-R-dito, pre-industrial value
	22	c bl95_b0-input-R-a parameter, may be varied for tests (s-sea, l-land)
	23	c bl95_b1-input-R-a parameter, may be varied for tests ( -"- )
	24	c
	25	c cldtaupi-output-R-pre-industrial value of cloud optical thickness,
	26	c needed for the diagnostics of the aerosol indirect
	27	c radiative forcing (see radlwsw)
	28	c re------output-R-Cloud droplet effective radius multiplied by fl [um]
	29	c fl------output-R-Denominator to re, introduced to avoid problems in
	30	c the averaging of the output. fl is the fraction of liquid
	31	c water clouds within a grid cell
[388]	32	c pcltau--output-R-epaisseur optique des nuages
	33	c pclemi--output-R-emissivite des nuages (0 a 1)
	34	c======================================================================
	35	C
	36	#include "YOMCST.h"
	37	c
	38	#include "dimensions.h"
	39	#include "dimphy.h"
	40	#include "nuage.h"
	41	REAL paprs(klon,klev+1), pplay(klon,klev)
	42	REAL t(klon,klev)
	43	c
	44	REAL pclc(klon,klev)
	45	REAL pqlwp(klon,klev)
	46	REAL pcltau(klon,klev), pclemi(klon,klev)
	47	c
	48	REAL pct(klon), pctlwp(klon), pch(klon), pcl(klon), pcm(klon)
	49	c
	50	LOGICAL lo
	51	c
	52	REAL cetahb, cetamb
	53	PARAMETER (cetahb = 0.45, cetamb = 0.80)
	54	C
	55	INTEGER i, k
[486]	56	cIM: 091003 REAL zflwp, zradef, zfice, zmsac
	57	REAL zflwp(klon), zradef, zfice, zmsac
	58	cIM: 091003 rajout
	59	REAL xflwp(klon), xfiwp(klon)
	60	REAL xflwc(klon,klev), xfiwc(klon,klev)
[388]	61	c
	62	REAL radius, rad_chaud
	63	cc PARAMETER (rad_chau1=13.0, rad_chau2=9.0, rad_froid=35.0)
	64	ccc PARAMETER (rad_chaud=15.0, rad_froid=35.0)
	65	c sintex initial PARAMETER (rad_chaud=10.0, rad_froid=30.0)
	66	REAL coef, coef_froi, coef_chau
	67	PARAMETER (coef_chau=0.13, coef_froi=0.09)
	68	REAL seuil_neb, t_glace
	69	PARAMETER (seuil_neb=0.001, t_glace=273.0-15.0)
	70	INTEGER nexpo ! exponentiel pour glace/eau
	71	PARAMETER (nexpo=6)
	72	ccc PARAMETER (nexpo=1)
	73
	74	c -- sb:
	75	logical ok_newmicro
	76	c parameter (ok_newmicro=.FALSE.)
[486]	77	cIM: 091003 real rel, tc, rei, zfiwp
	78	real rel, tc, rei, zfiwp(klon)
[388]	79	real k_liq, k_ice0, k_ice, DF
	80	parameter (k_liq=0.0903, k_ice0=0.005) ! units=m2/g
	81	parameter (DF=1.66) ! diffusivity factor
	82	c sb --
[517]	83	cjq for the aerosol indirect effect
	84	cjq introduced by Johannes Quaas (quaas@lmd.jussieu.fr), 27/11/2003
	85	cjq
	86	LOGICAL ok_aie ! Apply AIE or not?
	87	LOGICAL ok_a1lwpdep ! a1 LWP dependent?
	88
	89	REAL sulfate(klon, klev) ! sulfate aerosol mass concentration [ug m-3]
	90	REAL cdnc(klon, klev) ! cloud droplet number concentration [m-3]
	91	REAL re(klon, klev) ! cloud droplet effective radius [um]
	92	REAL sulfate_pi(klon, klev) ! sulfate aerosol mass concentration [ug m-3] (pre-industrial value)
	93	REAL cdnc_pi(klon, klev) ! cloud droplet number concentration [m-3] (pi value)
	94	REAL re_pi(klon, klev) ! cloud droplet effective radius [um] (pi value)
	95
	96	REAL fl(klon, klev) ! xliq * rneb (denominator to re; fraction of liquid water clouds within the grid cell)
	97
	98	REAL bl95_b0, bl95_b1 ! Parameter in B&L 95-Formula
	99
	100	REAL cldtaupi(klon, klev) ! pre-industrial cloud opt thickness for diag
	101	cjq-end
[388]	102	c
	103	c Calculer l'epaisseur optique et l'emmissivite des nuages
	104	c
[486]	105	cIM inversion des DO
	106	DO i = 1, klon
	107	xflwp(i)=0.
	108	xfiwp(i)=0.
[388]	109	DO k = 1, klev
[486]	110	c
	111	xflwc(i,k)=0.
	112	xfiwc(i,k)=0.
	113	c
[388]	114	rad_chaud = rad_chau1
	115	IF (k.LE.3) rad_chaud = rad_chau2
	116	pclc(i,k) = MAX(pclc(i,k), seuil_neb)
[486]	117	zflwp(i) = 1000.*pqlwp(i,k)/RG/pclc(i,k)
[388]	118	. *(paprs(i,k)-paprs(i,k+1))
	119	zfice = 1.0 - (t(i,k)-t_glace) / (273.13-t_glace)
	120	zfice = MIN(MAX(zfice,0.0),1.0)
	121	zfice = zfice**nexpo
	122	radius = rad_chaud * (1.-zfice) + rad_froid * zfice
	123	coef = coef_chau * (1.-zfice) + coef_froi * zfice
[486]	124	pcltau(i,k) = 3.0/2.0 * zflwp(i) / radius
	125	pclemi(i,k) = 1.0 - EXP( - coef * zflwp(i))
[388]	126
	127	if (ok_newmicro) then
	128
	129	c -- liquid/ice cloud water paths:
	130
	131	zfice = 1.0 - (t(i,k)-t_glace) / (273.13-t_glace)
	132	zfice = MIN(MAX(zfice,0.0),1.0)
	133
[486]	134	zflwp(i) = 1000.(1.-zfice)pqlwp(i,k)/pclc(i,k)
[388]	135	: *(paprs(i,k)-paprs(i,k+1))/RG
[486]	136	zfiwp(i) = 1000.zficepqlwp(i,k)/pclc(i,k)
[388]	137	: *(paprs(i,k)-paprs(i,k+1))/RG
	138
[486]	139	xflwp(i) = xflwp(i)+ (1.-zfice)*pqlwp(i,k)
	140	: *(paprs(i,k)-paprs(i,k+1))/RG
	141	xfiwp(i) = xfiwp(i)+ zfice*pqlwp(i,k)
	142	: *(paprs(i,k)-paprs(i,k+1))/RG
	143
	144	cIM Total Liquid/Ice water content
	145	xflwc(i,k) = xflwc(i,k)+(1.-zfice)*pqlwp(i,k)
	146	xfiwc(i,k) = xfiwc(i,k)+zfice*pqlwp(i,k)
	147	cIM In-Cloud Liquid/Ice water content
	148	c xflwc(i,k) = xflwc(i,k)+(1.-zfice)*pqlwp(i,k)/pclc(i,k)
	149	c xfiwc(i,k) = xfiwc(i,k)+zfice*pqlwp(i,k)/pclc(i,k)
	150
[388]	151	c -- effective cloud droplet radius (microns):
	152
	153	c for liquid water clouds:
[517]	154	IF (ok_aie) THEN
	155	! Formula "D" of Boucher and Lohmann, Tellus, 1995
	156	!
	157	cdnc(i,k) = 10.*(bl95_b0+bl95_b1
	158	. log(MAX(sulfate(i,k),1.e-4))/log(10.))*1.e6 !-m-3
	159	! Cloud droplet number concentration (CDNC) is restricted
	160	! to be within [20, 1000 cm^3]
	161	!
	162	cdnc(i,k)=MIN(1000.e6,MAX(20.e6,cdnc(i,k)))
	163	!
	164	!
	165	cdnc_pi(i,k) = 10.*(bl95_b0+bl95_b1
	166	. log(MAX(sulfate_pi(i,k),1.e-4))/log(10.))*1.e6 !-m-3
	167	cdnc_pi(i,k)=MIN(1000.e6,MAX(20.e6,cdnc_pi(i,k)))
	168	!
	169	!
	170	! air density: pplay(i,k) / (RD * zT(i,k))
	171	! factor 1.1: derive effective radius from volume-mean radius
	172	! factor 1000 is the water density
	173	! _chaud means that this is the CDR for liquid water clouds
	174	!
	175	rad_chaud =
	176	. 1.1 * ( (pqlwp(i,k) * pplay(i,k) / (RD * T(i,k)) )
	177	. / (4./3. * RPI * 1000. * cdnc(i,k)) )**(1./3.)
	178	!
	179	! Convert to um. CDR shall be at least 3 um.
	180	!
	181	c rad_chaud = MAX(rad_chaud*1.e6, 3.)
	182	rad_chaud = MAX(rad_chaud*1.e6, 5.)
	183
	184	! Pre-industrial cloud opt thickness
	185	!
	186	! "radius" is calculated as rad_chaud above (plus the
	187	! ice cloud contribution) but using cdnc_pi instead of
	188	! cdnc.
	189	radius =
	190	. 1.1 * ( (pqlwp(i,k) * pplay(i,k) / (RD * T(i,k)) )
	191	. / (4./3. * RPI * 1000. * cdnc_pi(i,k)) )**(1./3.)
[535]	192	radius = MAX(radius*1.e6, 5.)
[517]	193
	194	tc = t(i,k)-273.15
	195	rei = 0.71*tc + 61.29
	196	if (tc.le.-81.4) rei = 3.5
	197	if (zflwp(i).eq.0.) radius = 1.
	198	if (zfiwp(i).eq.0. .or. rei.le.0.) rei = 1.
	199	cldtaupi(i,k) = 3.0/2.0 * zflwp(i) / radius
	200	. + zfiwp(i) * (3.448e-03 + 2.431/rei)
	201	ENDIF ! ok_aie
	202	! For output diagnostics
	203	!
	204	! Cloud droplet effective radius [um]
	205	!
	206	! we multiply here with f * xl (fraction of liquid water
	207	! clouds in the grid cell) to avoid problems in the
	208	! averaging of the output.
	209	! In the output of IOIPSL, derive the real cloud droplet
	210	! effective radius as re/fl
	211	!
	212	fl(i,k) = pclc(i,k)*(1.-zfice)
	213	re(i,k) = rad_chaud*fl(i,k)
	214
	215	c-jq end
	216
[388]	217	rel = rad_chaud
	218	c for ice clouds: as a function of the ambiant temperature
	219	c [formula used by Iacobellis and Somerville (2000), with an
	220	c asymptotical value of 3.5 microns at T<-81.4 C added to be
	221	c consistent with observations of Heymsfield et al. 1986]:
	222	tc = t(i,k)-273.15
	223	rei = 0.71*tc + 61.29
	224	if (tc.le.-81.4) rei = 3.5
	225
	226	c -- cloud optical thickness :
	227
	228	c [for liquid clouds, traditional formula,
	229	c for ice clouds, Ebert & Curry (1992)]
	230
[486]	231	if (zflwp(i).eq.0.) rel = 1.
	232	if (zfiwp(i).eq.0. .or. rei.le.0.) rei = 1.
	233	pcltau(i,k) = 3.0/2.0 * ( zflwp(i)/rel )
	234	. + zfiwp(i) * (3.448e-03 + 2.431/rei)
[388]	235
	236	c -- cloud infrared emissivity:
	237
	238	c [the broadband infrared absorption coefficient is parameterized
	239	c as a function of the effective cld droplet radius]
	240
	241	c Ebert and Curry (1992) formula as used by Kiehl & Zender (1995):
	242	k_ice = k_ice0 + 1.0/rei
	243
	244	pclemi(i,k) = 1.0
[486]	245	. - EXP( - coef_chauzflwp(i) - DFk_ice*zfiwp(i) )
[388]	246
	247	endif ! ok_newmicro
	248
	249	lo = (pclc(i,k) .LE. seuil_neb)
	250	IF (lo) pclc(i,k) = 0.0
	251	IF (lo) pcltau(i,k) = 0.0
	252	IF (lo) pclemi(i,k) = 0.0
[517]	253
	254	IF (lo) cldtaupi(i,k) = 0.0
	255	IF (.NOT.ok_aie) cldtaupi(i,k)=pcltau(i,k)
[388]	256	ENDDO
	257	ENDDO
	258	ccc DO k = 1, klev
	259	ccc DO i = 1, klon
	260	ccc t(i,k) = t(i,k)
	261	ccc pclc(i,k) = MAX( 1.e-5 , pclc(i,k) )
	262	ccc lo = pclc(i,k) .GT. (2.*1.e-5)
	263	ccc zflwp = pqlwp(i,k)1000.(paprs(i,k)-paprs(i,k+1))
	264	ccc . /(rg*pclc(i,k))
	265	ccc zradef = 10.0 + (1.-sigs(k))*45.0
	266	ccc pcltau(i,k) = 1.5 * zflwp / zradef
	267	ccc zfice=1.0-MIN(MAX((t(i,k)-263.)/(273.-263.),0.0),1.0)
	268	ccc zmsac = 0.13(1.0-zfice) + 0.08zfice
	269	ccc pclemi(i,k) = 1.-EXP(-zmsac*zflwp)
	270	ccc if (.NOT.lo) pclc(i,k) = 0.0
	271	ccc if (.NOT.lo) pcltau(i,k) = 0.0
	272	ccc if (.NOT.lo) pclemi(i,k) = 0.0
	273	ccc ENDDO
	274	ccc ENDDO
	275	cccccc print*, 'pas de nuage dans le rayonnement'
	276	cccccc DO k = 1, klev
	277	cccccc DO i = 1, klon
	278	cccccc pclc(i,k) = 0.0
	279	cccccc pcltau(i,k) = 0.0
	280	cccccc pclemi(i,k) = 0.0
	281	cccccc ENDDO
	282	cccccc ENDDO
	283	C
	284	C COMPUTE CLOUD LIQUID PATH AND TOTAL CLOUDINESS
	285	C
	286	DO i = 1, klon
	287	pct(i)=1.0
	288	pch(i)=1.0
	289	pcm(i) = 1.0
	290	pcl(i) = 1.0
	291	pctlwp(i) = 0.0
	292	ENDDO
	293	C
	294	DO k = klev, 1, -1
	295	DO i = 1, klon
	296	pctlwp(i) = pctlwp(i)
	297	. + pqlwp(i,k)*(paprs(i,k)-paprs(i,k+1))/RG
	298	pct(i) = pct(i)*(1.0-pclc(i,k))
	299	if (pplay(i,k).LE.cetahb*paprs(i,1))
	300	. pch(i) = pch(i)*(1.0-pclc(i,k))
	301	if (pplay(i,k).GT.cetahb*paprs(i,1) .AND.
	302	. pplay(i,k).LE.cetamb*paprs(i,1))
	303	. pcm(i) = pcm(i)*(1.0-pclc(i,k))
	304	if (pplay(i,k).GT.cetamb*paprs(i,1))
	305	. pcl(i) = pcl(i)*(1.0-pclc(i,k))
	306	ENDDO
	307	ENDDO
	308	C
	309	DO i = 1, klon
	310	pct(i)=1.-pct(i)
	311	pch(i)=1.-pch(i)
	312	pcm(i)=1.-pcm(i)
	313	pcl(i)=1.-pcl(i)
	314	ENDDO
	315	C
	316	RETURN
	317	END

Note: See TracBrowser for help on using the repository browser.

Download in other formats:

Original Format