Title: Cape Grim Particle Size Distribution Data

Contact:

   Alfred Wiedensohler
   Institute for Tropospheric Research
   Permoserstr. 15
   D-04303 Leipzig
   Germany
   Phone: +49-341-235-2467
   Fax: +49-341-235-2361
   E-Mail: ali@tropos.de

Or

   Frank Stratmann
   Institute for Tropospheric Research
   Permoserstr. 15
   D-04303 Leipzig
   Germany
   Phone: +49-341-235-2862
   Fax: +49-341-235-2361
   E-Mail Address: straddi@tropos.de


Data Set Description:

PARTICLE SIZE DISTRIBUTION DATA MEASURED AT CAPE GRIM

During the ACE 1 intensive measurement campaign the Institute for
Tropospheric Research (IFT) carried out continuous particle size
distribution measurements at Cape Grim. The measurements were
performed during the period November 17th to December 13th 1995.

For these size distribution measurements, a Twin Differential Mobility
Particle Sizing (DMPS) system consisting of 2 Vienna-type Differential
Mobility Analysers (DMAs) and 2 Condensation Particle Counters (CPCs,
TSI 3035 and TSI 3010) were used. The DMAs and CPCs were calibrated
during the ACE-1 calibration workshops at the IFT (DMAs) and at the
University of Washington (CPCs).

Measurements were performed in the particle size regime 3 < dp < 750 nm.
The measured raw distributions were inverted using the new
data inversion algorithm developed at the IFT. During the inversion
the DMA transmission efficiencies and the CPC counting efficiencies
were accounted for.


Format: space-delimited ASCII with the fields:

Made available here are the inverted size distributions. All distributions
are stored together in the single data set.

Each of the data files contains the following information:

  date   UTC date                              [YYYY/MM/DD]
  time   UTC time of day           [HH:MM:SS]
  T       cabin temperature        [K]
  p       cabin pressure           [mbar]
  k       number of size bins      [-]
  dp(i)   midpoint particle diameter    [nm]
  dndlogdp(i)   discrete size distribution      [#/cm3]


The data is stored according to the following structure:

  date  time   T   p   k   dp(1) ... dp(k)
  date  time   T   p   k   dndlogdp(1) ... dndlogdp(k)


File Name Conventions:
   grdmps.dat

References: None.