Title: C130 OPC Size Distribution Data


Contact:

   Antony Clarke
   Department of Oceanography
   University of Hawaii
   1000 Pope Road, MSB 502B
   Honolulu, HI 96822
   Phone: 808-957-6215 or 808-956-7777.
   Fax: 808-956-7112
   E-Mail Address: tclarke@soest.hawaii.edu


Data Set Description:

C130 Optical Particle Counter (OPC) Size Distribution Data

     These are particle number size distributions of OPC in the unit of
number per cubic centimeter (#/cc) at ambient pressure. Indicated sizes
are at midpoint of each size bin and there are 135 equally log spaced bins
per decade of diameter.

     These are dry aerosol at about 25% RH, ambient sizes require 
correction for size due to uptake of water at different relative
humidities.  

     The data were cleaned up and processed into one file for each flight
and flight numbers are indicated in the filenames.


Format: comma delimited ASCII with fields:

Date(UTC) - YYYY/MM/DD
Time(UTC) - HH:MM:SS
Lat(degN)
Lon(degN)
Alt(m)
DOJtime (or JDOYtime) - Julian decimal date (UTC)
STE - instrument sample temperature (degrees Celsius),
      one of three values: 40, 150, 300

The remaining columns (8-240) are particle number concentration (#/cc)
at all sizes in micrometer. The particle diameters are listed at the
first row of each files.


File Name Conventions:

     Files are named fNNopc.dat where NN is the flight number.
     An example for flight 01 is f01opc.dat.


References: None.