Directory structure and naming convention

Model resulst are archived by run. For instance, run dr066b7 
results are archived under dr066b7/. Inside each run directory, 
model results are archived first by year and then by quarter of year.
For instance, 1995 of run dr066b7 will be in the subdirectory 
dr066b7_1995. Inside the subdirectory for a given year, there are 
four directories for the four quarters of a year: n10day_01_09, 
n10day_10_18, n10day_19_27, and n10day_28_37. For instance, 
n10day_10_18 contains the results of the 10th to 18th 10-day of the 
year, i.e. day 90 to day 180 of year 1995. Note n10day_28_37 contains 
results for day 270 to day 370 which is the 5th day of next year for 
non-leap year and 6th day for leap year.

Each subdirectory for a particular quarter of a year contains both 
time-averaged fields and instantaneous fields. Naming convention for 
files is illustrated by the following examples:

Uave_08_08.02160_04320_240.cdf
U: Variable name (Zonal velocity)
ave: Time-averaged field. If no "ave", the field is an instantaneous field.
08_08: The run was conducted by using 8 by 8 tiled layout.
02160_04320: time span from time step 2160 to 4320. The model uses 1-hour time step.
   So the time span is from day 90 to day 180.
240: The time interval in time steps between time records. For time-averaged
   fields, the time interval is also the length in time steps of average period.
   For 1-hour time step, 240 time steps is 10-day.

H_08_08.02160_04320_012.cdf
H: Variable name (Sea level). Since there is no "ave" following "H", the field
   is an instantaneous field.
08_08: The run was conducted by using 8 by 8 tiled layout.
02160_04320: Time span from time step 2160 to 4320. The model has 1-hour time
   step. So the time span is from day 90 to day 180.
012: The time interval of in time steps between records. The 12 time steps is
   12-hour for 1-hour time step.