[Prev] [Next] [Return to Table of Contents]

II. T42 Simulations, Climatological Monthly Averaged Sea Surface Temperature

Two control simulations have been carried out with the standard CCM2 configuration of T42 horizontal spectral resolution with a 128 by 64 point transform grid and 18 vertical levels with the top at 2.917 mb. The first 20-year simulation (Case 388) was run on an older CRAY operating system and can no longer be duplicated bit for bit. The second 10-year simulation (Case 414) was run with the frozen code and can currently be duplicated bit for bit. This allows use of the branch option to produce additional diagnostic information. It is unknown how long the current compiler and operating system will remain unchanged, allowing such exact regeneration runs. These simulations used the climatological monthly averaged sea surface temperatures of Shea et al. (1992). History tapes have been written as a series of Mass Storage System (MSS) datasets with 10 files per volume. These history datasets were written once per model day and contain data averaged over the preceding 24 hours. They are packed two to one. The volume names and model days and dates are tabulated below.

Full description and format of the contents of the history tape are available in the User's Guide to NCAR CCM2 (Bath et al. 1992). A brief description of the field list in each dataset, for all the simulations listed in this report, is as follows:

Num Field Units Description
1 PHIS M2/S2 surface geopotential
2 PS PA surface pressure
3 T K temperature
4 U M/S zonal wind component
5 V M/S meridional wind component
6 Q KG/KG specific humidity
7 TA01 KG/KGS total advection of q
8 VD01 KG/KGS q diffusion tendency
9 DC01 KG/KGS q tendency from adjustment physics
10 DTH K/S T horizontal diffusion tendency
11 ORO FLAG surface type flag
12 WET M surface wetness
13 SNOWH M water equivalent snow depth
14 PRECL M/S large-scale, stable precipitation
15 PRECC M/S convective precipitation
16 SHFLX W/M2 surface sensible heat flux
17 LHFLX W/M2 surface latent heat flux
18 QFLX KG/M2/S surface water flux
19 PBLH M PBL height
20 USTAR M/S surface friction velocity
21 TPERT K PBL plume temperature perturbation
22 QPERT KG/KG PBL plume moisture perturbation
23 DTV K/S T vertical diffusion tendency
24 FSNS W/M2 Net solar flux at surface
25 FLNS W/M2 Net longwave flux at surface
26 FLNT W/M2 Net longwave flux at top
27 FSNT W/M2 Net solar flux at top
28 CLOUD FRACTION cloud fraction
29 EFFCLD FRACTION effective cloud fraction
30 FLNTC W/M2 Net clear-sky longwave flux at top
31 FSNTC W/M2 Net clear-sky solar flux at top
32 FLNSC W/M2 Net clear-sky longwave flux at surface
33 FSNSC W/M2 Net clear-sky solar flux at surface
34 OMEGA PA/S vertical pressure velocity
35 DQP KG/KGS q tendency from rainout
36 TAUX N/M2 zonal surface stress
37 TAUY N/M2 meridional surface stress
38 SRFRAD W/M2 net surface radiative flux
39 QRS K/S solar heating rate
40 QRL K/S longwave heating rate
41 CLDTOT FRACTION total cloud cover (random overlap)
42 CLDLOW FRACTION low cloud cover (random overlap)
43 CLDMED FRACTION mid cloud cover (random overlap)
44 CLDHGH FRACTION high cloud cover (random overlap)
45 TS1 K surface temperature
46 TS2 K sub-surface temperature (level 2)
47 TS3 K sub-surface temperature (level 3)
48 TS4 K sub-surface temperature (level 4)
49 SOLIN W/M2 solar insolation
50 UTGW M/S2 gravity wave drag u tendency
51 VTGW M/S2 gravity wave drag v tendency
52 TAUGWX N/M2 gravity wave drag zonal surface stress
53 TAUGWY N/M2 gravity wave drag merid surface stress
54 DTCOND K/S T tendency from adjustment physics
55 CMFDT K/S T tendency from moist convection
56 CMFDQ KG/KGS q tendency from moist convection
57 CMFMC KG/M2S total convective mass flux
58 CMFSL W/M2 convective lw static energy flux
59 CMFLQ W/M2 convective total water flux
60 CNVCLD FRACTION convective cloud fraction
[Prev] [Next] [Return to Table of Contents]