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1 \section{The external forcing package
2 \label{sectionexf}}
3
4 \subsection{Summary}
5
6 {\footnotesize
7 \begin{verbatim}
8 c Field definitions, units, and sign conventions:
9 c ===============================================
10 c
11 c ustress :: Zonal surface wind stress in N/m^2
12 c > 0 for increase in uVel, which is west to
13 c east for cartesian and spherical polar grids
14 c Typical range: -0.5 < ustress < 0.5
15 c Southwest C-grid U point
16 c Input field
17 c
18 c vstress :: Meridional surface wind stress in N/m^2
19 c > 0 for increase in vVel, which is south to
20 c north for cartesian and spherical polar grids
21 c Typical range: -0.5 < vstress < 0.5
22 c Southwest C-grid V point
23 c Input field
24 c
25 c hflux :: Net upward surface heat flux excluding shortwave in W/m^2
26 c hflux = latent + sensible + lwflux
27 c > 0 for decrease in theta (ocean cooling)
28 c Typical range: -250 < hflux < 600
29 c Southwest C-grid tracer point
30 c Input field
31 c
32 c sflux :: Net upward freshwater flux in m/s
33 c sflux = evap - precip - runoff
34 c > 0 for increase in salt (ocean salinity)
35 c Typical range: -1e-7 < sflux < 1e-7
36 c Southwest C-grid tracer point
37 c Input field
38 c
39 c swflux :: Net upward shortwave radiation in W/m^2
40 c swflux = - ( swdown - ice and snow absorption - reflected )
41 c > 0 for decrease in theta (ocean cooling)
42 c Typical range: -350 < swflux < 0
43 c Southwest C-grid tracer point
44 c Input field
45 c
46 c uwind :: Surface (10-m) zonal wind velocity in m/s
47 c > 0 for increase in uVel, which is west to
48 c east for cartesian and spherical polar grids
49 c Typical range: -10 < uwind < 10
50 c Southwest C-grid U point
51 c Input or input/output field
52 c
53 c vwind :: Surface (10-m) meridional wind velocity in m/s
54 c > 0 for increase in vVel, which is south to
55 c north for cartesian and spherical polar grids
56 c Typical range: -10 < vwind < 10
57 c Southwest C-grid V point
58 c Input or input/output field
59 c
60 c atemp :: Surface (2-m) air temperature in deg K
61 c Typical range: 200 < atemp < 300
62 c Southwest C-grid tracer point
63 c Input or input/output field
64 c
65 c aqh :: Surface (2m) specific humidity in kg/kg
66 c Typical range: 0 < aqh < 0.02
67 c Southwest C-grid tracer point
68 c Input or input/output field
69 c
70 c lwflux :: Net upward longwave radiation in W/m^2
71 c lwflux = - ( lwdown - ice and snow absorption - emitted )
72 c > 0 for decrease in theta (ocean cooling)
73 c Typical range: -20 < lwflux < 170
74 c Southwest C-grid tracer point
75 c Input field
76 c
77 c evap :: Evaporation in m/s
78 c > 0 for increase in salt (ocean salinity)
79 c Typical range: 0 < evap < 2.5e-7
80 c Southwest C-grid tracer point
81 c Input, input/output, or output field
82 c
83 c precip :: Precipitation in m/s
84 c > 0 for decrease in salt (ocean salinity)
85 c Typical range: 0 < precip < 5e-7
86 c Southwest C-grid tracer point
87 c Input or input/output field
88 c
89 c runoff :: River and glacier runoff in m/s
90 c > 0 for decrease in salt (ocean salinity)
91 c Typical range: 0 < runoff < ????
92 c Southwest C-grid tracer point
93 c Input or input/output field
94 c !!! WATCH OUT: Default exf_inscal_runoff !!!
95 c !!! in exf_readparms.F is not 1.0 !!!
96 c
97 c swdown :: Downward shortwave radiation in W/m^2
98 c > 0 for increase in theta (ocean warming)
99 c Typical range: 0 < swdown < 450
100 c Southwest C-grid tracer point
101 c Input/output field
102 c
103 c lwdown :: Downward longwave radiation in W/m^2
104 c > 0 for increase in theta (ocean warming)
105 c Typical range: 50 < lwdown < 450
106 c Southwest C-grid tracer point
107 c Input/output field
108 c
109 c apressure :: Atmospheric pressure field in N/m^2
110 c > 0 for ????
111 c Typical range: ???? < apressure < ????
112 c Southwest C-grid tracer point
113 c Input field
114 C
115 C
116 c NOTES:
117 c ======
118 c
119 c Input and output units and sign conventions can be customized
120 c using variables exf_inscal_* and exf_outscal_*, which are set
121 c by exf_readparms.F
122 c
123 c Output fields fu, fv, Qnet, Qsw, and EmPmR are
124 c defined in FFIELDS.h
125 c
126 c #ifndef SHORTWAVE_HEATING, hflux includes shortwave,
127 c that is, hflux = latent + sensible + lwflux +swflux
128 c
129 c If (EXFwindOnBgrid .EQ. .TRUE.), uwind and vwind are
130 c defined on northeast B-grid U and V points, respectively.
131 c
132 c Arrays *0 and *1 below are used for temporal interpolation.
133 \end{verbatim}
134 }
135

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