Data Set Description
********************

Data Set Name: FIRE II 2D PROBE CONCENTRATIONS FOR THE NCAR SABRELINER

Data Set Producer:

  NAME: DR. ANDREW J. HEYMSFIELD
  ADDRESS: NATIONAL CENTER FOR ATMOSPHERIC RESEARCH
           P. O. BOX 3000
           BOULDER, CO  80307-3000
  TELEPHONE: (303) 497-8943
  FAX: (303) 497-8181
  INTERNET ADDRESS: HEYMS1@NCAR.UCAR.EDU

List all geophysical parameters along with the corresponding units, fill values,
and minimum and maximum values. (e.g., albedo, unitless, -999, 0, 1)

  PROBE NUMBER, unitless, 0, 1, 2
    1 = INDICATES 2D-C PROBE CONCENTRATION MEASUREMENT
    2 = INDICATES 2D-P PROBE CONCENTRATION MEASUREMENT
  TIME INTERVAL, HHMMSS (GMT), -999, 000000, 235959
  LAPSE TIME, s, -999, 0, 5
  AIR SPEED, m/s, -999, 0, 999
  PROBE CONCENTRATION, #/L, -999, 0, 99999

List all data sources, their respective sensor/instruments, and the parameter(s)
measured by each (e.g., ground sites, rawinsonde, temperature).

  NCAR SABRELINER, PARTICLE MEASUREMENT SYSTEM (PMS) 2D-C PROBE, CONCENTRATION COUNTS
  NCAR SABRELINER, PARTICLE MEASUREMENT SYSTEM (PMS) 2D-P PROBE, CONCENTRATION COUNTS

Provide a definition and/or brief description of all geophysical parameters,
sensor/instruments and source/platforms.

  The PMS 2D-C and 2D-P probes illuminate a linear array of photodiodes with a
  He-Ne laser.  As a particle passes through this focused beam, a shadow image
  is cast on the diodes and a count of the total number of occulted diodes
  represents the particle size.

Processing Level:

   Level 0_____
   Level 1A____
   Level 1B__X__
   Level 2_____
   Level 3_____
   Level 4_____

(0=Raw radiance data, 1A=Data unprocessed to sensor units, 1B=Data processed to
sensor units, 2=Derived geophysical parameters, 3=Geolocated geophysical
parameters, 4=Data from multiple measurements)

Spatial Coverage (Range):

   Minimum Latitude: N/A
   Maximum Latitude: N/A
   Minimum Longitude: N/A
   Maximum Longitude: N/A

Describe any gaps that may exist in the spatial coverage.

N/A

Spatial Resolution (e.g., 2.5 x 2.5 degree grid):
 
N/A

Temporal Coverage:

   Start Date (mm/dd/yy): 11/09/91
   Stop Date (mm/dd/yy): 12/06/91

   Describe any gaps that may exist in the temporal coverage.

     11/26/91, 10:46:26-12:37:26, FLIGHT RF06: NO 2DC OR 2DP DATA
     12/05/91, 20:23:14-23:25:19, FLIGHT RF13: NO 2DP DATA
     12/06/91, 13:59:07-17:02:55, FLIGHT RF14: NO 2DP DATA

Temporal Resolution:

   What is the smallest unit of data collected (e.g., 1 second, daily, monthly,
   etc.)?

     5 SECONDS

Were the data collected during the day, night or both?

  BOTH

Data Set Point of Contact:

  NAME: DR. ANDREW J. HEYMSFIELD
  ADDRESS: NATIONAL CENTER FOR ATMOSPHERIC RESEARCH
           P. O. BOX 3000
           BOULDER, CO  80307-3000
  TELEPHONE: (303) 497-8943
  FAX: (303) 497-8181
  EMAIL: HEYMS1@NCAR.UCAR.EDU

Data Set Processing History
***************************

When was this data set processed (mm/dd/yy)?

  05/11/95, 1/20/97

Is this data set still being generated?
  
   YES; UNDER EVALUATION USING DATA FROM THE SUCCESS FIELD PROGRAM.

   If so, at what rate (e.g., 1 file/day)? N/A

Does this data set require further processing by the Langley DAAC?

   NO

   If so, does the software exist to do this processing?

   In what computer language is the software written?

   On which computer systems has this software been developed?

   On what systems has this software run successfully?

   Provide the point of contact for this software.

      Name:
      Address:
      Telephone:
      Fax:
      Internet Address:

What is the version number of this data set?

  VERSION 1.0

Describe the computer system(s) on which this data set was processed.

   Software: FORTRAN 77

   Hardware: SUN SPARC 20

   Operating System: SUNOS 4.1.3

   Media Used: Hard Drive

Describe verification/validation procedures used with this data set.

Are there currently any plans to reprocess this data set? YES 

   If so, when will the data set be reprocessed?

      SPRING 1997

   Why will the data set be reprocessed?

      Recent SUCCESS measurements will help establish the validity
      of the processing techniques and a better idea of how to
      convert particle size to diameter.

Is this data set in HDF (EOS Standard Data Format) or ASCII? 

   ASCII

   If not, are you willing to convert the data set to HDF prior to delivery to the
   Langley DAAC?

   If you are not willing to convert the data to HDF, why not?

   If you are willing to convert the data to HDF, will you need guidance from the
   Langley DAAC?

   Do you need HDF documentation?

Describe the organization of the data set.

   THE DATA IS ORGANIZED ON A SINGLE FLIGHT BASIS, FOR BOTH THE KING AIR AND
   THE SABRELINER. RELEVANT PORTIONS OF THE HEADER FROM THE RAW BINARY
   FILES ARE INCLUDED. EACH DATA FILE CONTAINS PROCESSED CONCENTRATION DATA
   BASED ON HABIT TYPE AND AREA RATIO.

If data are not in HDF or ASCII, please describe the header, table of contents,
ancillary, data and trailer files in the following sections.

   Total number of files (including headers, ancillary files, etc.):

   Header files:

      Quantity:

      Format:

      Length of each (in bytes):

      Total number of physical records:

      Total number of logical records:

      Number of variables in each record:

      Number of leading/trailing blanks between records:

   Table of content files:

      Quantity:

      Format:

      Length of each (in bytes):

      Total number of physical records:

      Total number of logical records:

      Number of variables in each record:

      Number of leading/trailing blanks between records:

   Ancillary files:

      Quantity:

      Format:

      Length (in bytes):

      Total number of physical records:

      Total number of logical records:

      Number of variables in each record:

      Number of leading/trailing blanks between records:

   Data files:

      Quantity:

      Format:

      Length of each file (in bytes):

      Total number of physical records:

      Total number of logical records:

      Number of variables in each record:

      Number of leading/trailing blanks between records:

   Trailer files:

      Quantity:

      Format:

      Length of each file (in bytes):

      Total number of physical records:

      Total number of logical records:

      Number of variables in each record:

      Number of leading/trailing blanks between records:

If possible, please submit a sample data file with this request.

Data Processing Point of Contact:

  NAME: DR. ANDREW J. HEYMSFIELD
  ADDRESS: NATIONAL CENTER FOR ATMOSPHERIC RESEARCH
           P. O. BOX 3000
           BOULDER, CO  80307-3000
  TELEPHONE: (303) 497-8943
  FAX: (303) 497-8181
  EMAIL: HEYMS1@NCAR.UCAR.EDU

Browse Products
***************

Describe any browse products that will be included with this data set.

  NO BROWSE PRODUCTS PROVIDED.

   Format (e.g., GIF, TIFF, HDF, etc.)

   Number of browse images:

   Size of each image (in bytes):

      Uncompressed:

      Compressed:

   If compressed, what compression scheme was used?

   What is the resolution of each image (e.g. 640x480)?

   Software used to create browse images (e.g., IDL, NCAR Graphics,
   PV-WAVE, Spyglass, etc.):

Browse Product Point of Contact:

   Name:
   Address:
   Telephone Number:
   Fax:
   Internet Address:

If no browse products currently exist, do you have plans to produce any in the 
future?

  NO

Data Delivery
*************

What is the projected date for data set delivery?

  2/97

How will the data be delivered to the Langley DAAC? REMOTE FTP

   Media:

      Type (e.g., 4mm, 8mm, 3480, 6250, floppies, etc.):

      Quantity (e.g., 1, 4, 50, etc.):

      Have the data been compressed?

         If so, what compression scheme was used?

      Have you used the UNIX TAR command to write the data to tape?

      Total Volume:

   FTP:

   NOTE: The Langley DAAC prefers to pull the data from your ftp site;
   however, arrangements can be made for data producers to push data to our ftp
   site.

      Number of files (e.g, 1, 4, 50, etc.):
  
      14

      Size of files (in bytes):

      30789101 (uncompressed), 3544176 (compressed)

      Have the data been compressed and/or tarred for delivery?

      Yes, *.gz extension on each file.

      Total Volume:

Data Delivery Point of Contact:

  NAME: DR. ANDREW J. HEYMSFIELD
  ADDRESS: NATIONAL CENTER FOR ATMOSPHERIC RESEARCH
           P. O. BOX 3000
           BOULDER, CO  80307-3000
  TELEPHONE NUMBER: (303) 497-8943
  FAX: (303) 497-8181
  EMAIL ADDRESS: HEYMS1@NCAR.UCAR.EDU

Read Software
*************

The Langley DAAC requires data producers to provide read software for their data
sets.

ASCII FORMAT

Describe all software being delivered with this data set.

   Type (e.g., data dump, etc.):

   Language (e.g., Fortran, C, C++, etc.): 

   On which computer system(s) was this software written?

   On which computer system(s) was this software successfully compiled and
   run?

   Is this software portable to other computer systems?

Read Software Point of Contact:

User Community
**************

Describe the current user community of this data set (if any).
[For example: number of requests for data, etc.]

  3-5 DATA REQUESTS PER YEAR.

Method which is currently used to distribute data to users: REMOTE FTP

List all ancillary files and documentation currently included with distribution
of data
set to user.

  NONE

Documentation
*************

The Langley DAAC requires documentation to be submitted along with each data set
that describes the processing history, format, read software, and data.

Please indicate the following information for each document:

   Title:
   Type (e.g., data format, software, etc.):
   Author:
   Most recent version date:

List any other documents that would be useful to a new user of this data set.

Documentation Point of Contact:

References
**********

Please provide a list of publications and journal articles pertaining to
this data set or project (if any).

Heymsfield, A. J., 1977: Precipitation development in stratiform
ice clouds: A microphysical and dynamical study.   J. Atmos. Sci.,
34, 284--295.      

Heymsfield, A. J. and J. L. Parrish, 1978: A computational technique
for increasing the effective sampling volume of the PMS 2--D particle size
spectrometer.  J. Appl. Meteor., 17, 1566--1572.

Parrish, J. L., and A. J. Heymsfield, 1985: A user guide to a particle growth
and trajectory model (Using one--dimensional and three--dimensional wind
fields).  NCAR Tech Note NCAR/TN--259+1A, 69 pp.