TARFOX_WALLOPS_SMPS

This dataset contains the SMPS particle number concentration data acquired
during the TARFOX experiment at Wallops Island in July 1996.  The files are
ASCII, comma delimited.  The file names include the data start date and are
numbered to differentiate between different sets of measurements made on a
given day.

Instrument:
	Scanning mobility particle sizer (SMPS)
	(TSI Incorporated, St. Paul, MN)

Data:	Ground-based ambient size distribution of aerosol

Site:	Wallops Island (W-115)

Date:	Between 16 July and 26 July 1996
	(see also TARFOX Operations Summary page 119)

Data processing:
	Raw data exported using SMPS 2.0 (TSI),
	then imported to Microsoft Excel, adjusted to local time,
	then saved as comma delimited.

Data format:
	File name: 	roughly the date when the measurement began
	In each file: 	first 6 rows are from SMPS 2.0
	Example:
	Row 1: Particle Size Range(nm) 14.3 749
		; the size range measured
		; depends on the setting of the instrument
		; the same in each file
	Row 2: Channel Range 37 92
		; channel number in SMPS 2.0
	Row 3: Channels per decade 32
		; e.g., 32 channels between 30nm and 300nm
	Row 4: Weighted By Number
		; the data is the number concentration in each channel
	Row 5: Units Conc. dW
		; [cm-3]
	Row 6: Sample Time/Midpoint Diameters
		; below row 6, the first 5 columns are date and local time
		  (local time = GMT - 4)
		; the rest of Row 6 are midpoint diameters of each channel

Note:	These are RAW DATA from one of the two SMPSs used at the site.

Questions about this data may be addressed to:
   		Qiang Ji
	   	Code 913
	   	NASA/GSFC
	   	Greenbelt, MD  20771  U.S.A.
   		Telephone:  +1 301 286-3973
   		Fax: (301) 286-1759
   		Internet: ji@climate.gsfc.nasa.gov
   		
or to:

                Langley DAAC User Services
                NASA Langley Research Center
                MS 157D
                Hampton, VA  23681-2199 U.S.A.
                Telephone:  +1 757 864-8656
                Fax:  +1 757 864-8807
                Internet:  support-asdc@earthdata.nasa.gov
                Web URL:  http://eosweb.larc.nasa.gov