Data Set "MOD-01_MET_P3_DAILY"
------------------------------
Revised: March 14, 2001


BOREAS Follow-on MOD-1 Phase 3 Daily Averaged Gridded Meteorology 1994-1996

The Phase 3 gridded data sets provided by HMet-01 on an hourly time 
step have been converted to averaged daily files by the MOD-01 group 
to reduce the size and number of files used for input to some of the 
carbon models. Note that the daily data files contain floating point 
values rather than 16-bit integers.  Below is a table that describes 
how the hourly Phase 3 meteorological variables were summarized to 
daily values. Note that some of the data files have been 
compressed using Zip compression.

Variable      Variable Name      Units           Method of
Abbreviation                                     Summary
------------  -----------------  --------------  ---------------
Ta            Air Temperature    degrees C       min/max/average
Td            Dew Point          degrees C       average
              Temperature
Ud            Wind Direction     degrees from    average
                                 true North
U             Wind Speed         meters/sec      average
Pres          Air Pressure       kPa             average
Rsi           Incoming           Watts/meter^2   average of
              Shortwave                          values > 0
              Radiation
Lwi           Incoming Longwave  Watts/meter^2   average of
              Radiation                          values > 0
Precip        Precipitation      mm/day          total


Acknowledge: Vanessa Brooks Genovese, Valentijn Pauwels


File Inventory Information
--------------------------
Each file name has the following structure:

   yy-mm-dd_hh_sss_V2.bin

where yy is the two-digit year, mm is the 2-digit month, dd is the
2-digit day,  hh is the hour of day (in GMT), sss is the site (nsa
or ssa), and V2 is the variable (such as "pres", with a 2 or 3
following it for Phase 2 or Phase 3 data).

Each of the eight variables has the same directory structure.  Each
variable has three yearly subdirectories (94, 95, and 96).  Each yearly
subdirectory contains 365 or 366 daily data files. 

The data are stored as 4-byte binary float images, one image per
hour per variable (the data may need to be byte swapped to display
correctly).  The regional grid is 66 columns by 60 rows.
The NSA grid is 17 columns by 16 rows and the SSA grid is 20
columns by 18 rows.