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module_sf_oml.F @ 248

Last change on this file since 248 was 1, checked in by lfita, 11 years ago

-- --- Opening of the WRF+LMDZ coupling repository --- -- -

WRF: version v3.3
LMDZ: version v1818

More details in:

File size: 11.5 KB

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1	!WRF:MODEL_LAYER:PHYSICS
2	!
3	MODULE module_sf_oml
4
5	CONTAINS
6
7	!----------------------------------------------------------------
8	SUBROUTINE OCEANML(tml,t0ml,hml,h0ml,huml,hvml,ust,u_phy,v_phy, &
9	tmoml,f,g,oml_gamma, &
10	XLAND,HFX,LH,TSK,GSW,GLW,EMISS, &
11	DELTSM,STBOLT, &
12	ids,ide, jds,jde, kds,kde, &
13	ims,ime, jms,jme, kms,kme, &
14	its,ite, jts,jte, kts,kte )
15
16	!----------------------------------------------------------------
17	IMPLICIT NONE
18	!----------------------------------------------------------------
19	!
20	! SUBROUTINE OCEANML CALCULATES THE SEA SURFACE TEMPERATURE (TSK)
21	! FROM A SIMPLE OCEAN MIXED LAYER MODEL BASED ON
22	! (Pollard, Rhines and Thompson (1973).
23	!
24	!-- TML ocean mixed layer temperature (K)
25	!-- T0ML ocean mixed layer temperature (K) at initial time
26	!-- TMOML top 200 m ocean mean temperature (K) at initial time
27	!-- HML ocean mixed layer depth (m)
28	!-- H0ML ocean mixed layer depth (m) at initial time
29	!-- HUML ocean mixed layer u component of wind
30	!-- HVML ocean mixed layer v component of wind
31	!-- OML_GAMMA deep water lapse rate (K m-1)
32	!-- UAIR,VAIR lowest model level wind component
33	!-- UST frictional velocity
34	!-- HFX upward heat flux at the surface (W/m^2)
35	!-- LH latent heat flux at the surface (W/m^2)
36	!-- TSK surface temperature (K)
37	!-- GSW downward short wave flux at ground surface (W/m^2)
38	!-- GLW downward long wave flux at ground surface (W/m^2)
39	!-- EMISS emissivity of the surface
40	!-- XLAND land mask (1 for land, 2 for water)
41	!-- STBOLT Stefan-Boltzmann constant (W/m^2/K^4)
42	!-- F Coriolis parameter
43	!-- DT time step (second)
44	!-- G acceleration due to gravity
45
46	INTEGER, INTENT(IN ) :: ids,ide, jds,jde, kds,kde, &
47	ims,ime, jms,jme, kms,kme, &
48	its,ite, jts,jte, kts,kte
49
50	REAL, INTENT(IN ) :: DELTSM, STBOLT
51
52	REAL, DIMENSION( ims:ime, jms:jme ) , &
53	INTENT(IN ) :: EMISS, &
54	XLAND, &
55	GSW, &
56	GLW, &
57	HFX, &
58	LH
59
60	REAL, DIMENSION( ims:ime, jms:jme ) , &
61	INTENT(INOUT) :: TSK
62
63	REAL, DIMENSION( ims:ime, jms:jme ), INTENT(INOUT) :: &
64	TML,T0ML,HML,H0ML,HUML,HVML
65
66	REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), INTENT(IN ) :: &
67	U_PHY,V_PHY
68
69	REAL, DIMENSION( ims:ime, jms:jme ), INTENT(IN ) :: &
70	UST, F, TMOML
71
72	REAL, INTENT(IN ) :: G
73	REAL, INTENT(IN ) :: OML_GAMMA
74
75	! LOCAL VARS
76
77	INTEGER :: I,J
78
79	DO J=jts,jte
80
81	DO i=its,ite
82	IF (XLAND(I,J).GT.1.5) THEN
83	CALL OML1D(I,J,TML(i,j),T0ML(i,j),HML(i,j),H0ML(i,j), &
84	HUML(i,j),HVML(i,j),TSK(i,j),HFX(i,j), &
85	LH(i,j),GSW(i,j),GLW(i,j),TMOML(i,j), &
86	U_PHY(i,kts,j),V_PHY(i,kts,j),UST(i,j),F(i,j), &
87	EMISS(i,j),STBOLT,G,DELTSM,OML_GAMMA, &
88	ids,ide, jds,jde, kds,kde, &
89	ims,ime, jms,jme, kms,kme, &
90	its,ite, jts,jte, kts,kte )
91	ENDIF
92	ENDDO
93
94	ENDDO
95
96	END SUBROUTINE OCEANML
97
98	!----------------------------------------------------------------
99	SUBROUTINE OML1D(I,J,TML,T0ML,H,H0,HUML, &
100	HVML,TSK,HFX, &
101	LH,GSW,GLW,TMOML, &
102	UAIR,VAIR,UST,F,EMISS,STBOLT,G,DT,OML_GAMMA, &
103	ids,ide, jds,jde, kds,kde, &
104	ims,ime, jms,jme, kms,kme, &
105	its,ite, jts,jte, kts,kte )
106
107	!----------------------------------------------------------------
108	IMPLICIT NONE
109	!----------------------------------------------------------------
110	!
111	! SUBROUTINE OCEANML CALCULATES THE SEA SURFACE TEMPERATURE (TSK)
112	! FROM A SIMPLE OCEAN MIXED LAYER MODEL BASED ON
113	! (Pollard, Rhines and Thompson (1973).
114	!
115	!-- TML ocean mixed layer temperature (K)
116	!-- T0ML ocean mixed layer temperature (K) at initial time
117	!-- TMOML top 200 m ocean mean temperature (K) at initial time
118	!-- H ocean mixed layer depth (m)
119	!-- H0 ocean mixed layer depth (m) at initial time
120	!-- HUML ocean mixed layer u component of wind
121	!-- HVML ocean mixed layer v component of wind
122	!-- OML_GAMMA deep water lapse rate (K m-1)
123	!-- OMLCALL whether to call oml model
124	!-- UAIR,VAIR lowest model level wind component
125	!-- UST frictional velocity
126	!-- HFX upward heat flux at the surface (W/m^2)
127	!-- LH latent heat flux at the surface (W/m^2)
128	!-- TSK surface temperature (K)
129	!-- GSW downward short wave flux at ground surface (W/m^2)
130	!-- GLW downward long wave flux at ground surface (W/m^2)
131	!-- EMISS emissivity of the surface
132	!-- STBOLT Stefan-Boltzmann constant (W/m^2/K^4)
133	!-- F Coriolis parameter
134	!-- DT time step (second)
135	!-- G acceleration due to gravity
136	!
137	!----------------------------------------------------------------
138	INTEGER, INTENT(IN ) :: I, J
139	INTEGER, INTENT(IN ) :: ids,ide, jds,jde, kds,kde, &
140	ims,ime, jms,jme, kms,kme, &
141	its,ite, jts,jte, kts,kte
142
143	REAL, INTENT(INOUT) :: TML, H, H0, HUML, HVML, TSK
144
145	REAL, INTENT(IN ) :: T0ML, HFX, LH, GSW, GLW, &
146	UAIR, VAIR, UST, F, EMISS, TMOML
147
148	REAL, INTENT(IN) :: STBOLT, G, DT, OML_GAMMA
149
150	! Local
151	REAL :: rhoair, rhowater, Gam, alp, BV2, A1, A2, B2, u, v, wspd, &
152	hu1, hv1, hu2, hv2, taux, tauy, tauxair, tauyair, q, hold, &
153	hsqrd, thp, cwater, ust2
154	CHARACTER(LEN=120) :: time_series
155
156	hu1=huml
157	hv1=hvml
158	rhoair=1.
159	rhowater=1000.
160	cwater=4200.
161	! Deep ocean lapse rate (K/m) - from Rich
162	Gam=oml_gamma
163	! if(i.eq.1 .and. j.eq.1 .or. i.eq.105.and.j.eq.105) print *, 'gamma = ', gam
164	! Gam=0.14
165	! Gam=5.6/40.
166	! Gam=5./100.
167	! Thermal expansion coeff (/K)
168	! alp=.0002
169	! temp dependence (/K)
170	alp=max((tml-273.15)*1.e-5, 1.e-6)
171	BV2=alpgGam
172	thp=t0ml-Gam*(h-h0)
173	A1=(tml-thp)h - 0.5Gamhh
174	if(h.ne.0.)then
175	u=hu1/h
176	v=hv1/h
177	else
178	u=0.
179	v=0.
180	endif
181
182	! time step
183
184	q=(-hfx-lh+gsw+glw-stboltemisstmltmltmltml)/(rhowatercwater)
185	! wspd=max(sqrt(uairuair+vairvair),0.1)
186	wspd=sqrt(uairuair+vairvair)
187	if (wspd .lt. 1.e-10 ) then
188	! print *, 'i,j,wspd are ', i,j,wspd
189	wspd = 1.e-10
190	endif
191	! limit ust to 1.6 to give a value of ust for water of 0.05
192	! ust2=min(ust, 1.6)
193	! new limit for ust: reduce atmospheric ust by half for ocean
194	ust2=0.5*ust
195	tauxair=ust2ust2uair/wspd
196	taux=rhoair/rhowater*tauxair
197	tauyair=ust2ust2vair/wspd
198	tauy=rhoair/rhowater*tauyair
199	! note: forward-backward coriolis force for effective time-centering
200	hu2=hu1+dt( fhv1 + taux)
201	hv2=hv1+dt(-fhu2 + tauy)
202	! consider the flux effect
203	A2=A1+q*dt
204
205	huml=hu2
206	hvml=hv2
207
208	hold=h
209	B2=hu2hu2+hv2hv2
210	hsqrd=-A2/Gam + sqrt(A2A2/(GamGam) + 2.*B2/BV2)
211	h=sqrt(max(hsqrd,0.0))
212	! limit to positive h change
213	if(h.lt.hold)h=hold
214
215	! if(h.ne.0.)then
216	! no change unless tml is warmer than layer mean temp tmol or tsk-5 (see omlinit)
217	if(tml.ge.tmoml .and. h.ne.0.)then
218	tml=max(t0ml - Gam(h-h0) + 0.5Gam*h + A2/h, tmoml)
219	u=hu2/h
220	v=hv2/h
221	else
222	tml=t0ml
223	u=0.
224	v=0.
225	endif
226	tsk=tml
227	! if(h.gt.100.)print *,i,j,h,tml,' h,tml'
228
229	! ww: output point data
230	! if( (i.eq.190 .and. j.eq.115) .or. (i.eq.170 .and. j.eq.125) ) then
231	! write(jtime,fmt='("TS ",f10.0)') float(itimestep)
232	! CALL wrf_message ( TRIM(jtime) )
233	! write(time_series,fmt='("OML",2I4,2F9.5,2F8.2,2E15.5,F8.3)') &
234	! i,j,u,v,tml,h,taux,tauy,a2
235	! CALL wrf_message ( TRIM(time_series) )
236	! end if
237
238	END SUBROUTINE OML1D
239
240	!================================================================
241	SUBROUTINE omlinit(oml_hml0, tsk, &
242	tml,t0ml,hml,h0ml,huml,hvml,tmoml, &
243	allowed_to_read, start_of_simulation, &
244	ids,ide, jds,jde, kds,kde, &
245	ims,ime, jms,jme, kms,kme, &
246	its,ite, jts,jte, kts,kte )
247	!----------------------------------------------------------------
248	IMPLICIT NONE
249	!----------------------------------------------------------------
250	LOGICAL , INTENT(IN) :: allowed_to_read
251	LOGICAL , INTENT(IN) :: start_of_simulation
252	INTEGER, INTENT(IN ) :: ids,ide, jds,jde, kds,kde, &
253	ims,ime, jms,jme, kms,kme, &
254	its,ite, jts,jte, kts,kte
255
256	REAL, DIMENSION( ims:ime, jms:jme ) , &
257	INTENT(IN) :: TSK
258
259	REAL, DIMENSION( ims:ime, jms:jme ) , &
260	INTENT(INOUT) :: TML, T0ML, HML, H0ML, HUML, HVML, TMOML
261	REAL , INTENT(IN ) :: oml_hml0
262
263	! LOCAR VAR
264
265	INTEGER :: L,J,I,itf,jtf
266	CHARACTER*1024 message
267
268	!----------------------------------------------------------------
269
270	itf=min0(ite,ide-1)
271	jtf=min0(jte,jde-1)
272
273	IF(start_of_simulation) THEN
274	DO J=jts,jtf
275	DO I=its,itf
276	TML(I,J)=TSK(I,J)
277	T0ML(I,J)=TSK(I,J)
278	ENDDO
279	ENDDO
280	IF (oml_hml0 .gt. 0.) THEN
281	WRITE(message,*)'Initializing OML with HML0 = ', oml_hml0
282	CALL wrf_debug (0, TRIM(message))
283	DO J=jts,jtf
284	DO I=its,itf
285	HML(I,J)=oml_hml0
286	H0ML(I,J)=HML(I,J)
287	HUML(I,J)=0.
288	HVML(I,J)=0.
289	TMOML(I,J)=TSK(I,J)-5.
290	ENDDO
291	ENDDO
292	ELSE
293	WRITE(message,*)'Initializing OML with real HML0, h(1,1) = ', h0ml(1,1)
294	CALL wrf_debug (0, TRIM(message))
295	DO J=jts,jtf
296	DO I=its,itf
297	HML(I,J)=H0ML(I,J)
298	! fill in near coast area with SST: 200 K was set as missing value in ocean pre-processing code
299	IF(TMOML(I,J).GT.200. .and. TMOML(I,J).LE.201.) TMOML(I,J)=TSK(I,J)
300	ENDDO
301	ENDDO
302	ENDIF
303	ENDIF
304
305	END SUBROUTINE omlinit
306	!-------------------------------------------------------------------
307	END MODULE module_sf_oml

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