Date:  23 Nov 1995
 Time Sent: 10:15 E Summer 
 Reported by: John Gras
 
 
 
 CHECK IF                      COMMENTS/
 OPERATIONAL                   CUT TIME OFF-LINE
 ------------                  -------------------
 
 
   CN, TSI 3020
 
   Static thermal gradient CCN Counter     
 
   Continuous record of CCN at 0.5%
 
   PMS ASASP-X
 
   TSI 3071
 
    Particle number size distribution using an UDMPS >

    TDMA measurements of hygroscopic growth
 
   Light scattering & backscattering fraction, 2 nephelometers
 
    Ammonium to nss sulfate molar ratio using thermal cond. ----->not included 

   Magee Scientific Aethalometer
 
   TSI 3760 CN counter Gras
 
   Hivol, PM10
 
   Size selected filter stack
 
   SO2 Saltzman
 
    NH3 Whung, AOML
 
   DMS, automated gas chromatography
 
   Radon (222)
 
   Spectral optical depth
 
    Aerosol chemical composition using mass spectrometry >

    Daily MOUDI samples
 
   Six-stage hi-vol cascade impactor Sievering
 
   Bulk filter concentrations every three
hours
 
   NOx, NMHC, O3
 
   Peroxides and aldehydes
 
    Stable sulfur isotopes
 
   Single particle analysis using TEM/SEM/EDXA
 
    Single particle analysis using 
 MassSpec 
    APS

   ISS -operational


OTHER COMMENTS: 

Winds went into the baseline sector yesterday after a fairly long period 
of easterlies.. In the SW air stream CN concentrations have been around 
600-800 per cc, CCN at 0.5% around 100 per cc,  NOX < 15 ppt.  SO2 on the 
previous day (325, Tues) was around 5-8 pptv.

DMS concentrations in the s.w. airstream were around 120-150 ng/m3 at 
0700Z Wednesday (326), maxima around local midnight (1400z) 200 ng/m3 
decreasing to current (0200z day 327) 80-100 ng/m3.