Title: Macquarie Island Particle Size Distribution

Contact:

   Sonia Kreidenweis
   Principal Investigator
   Dept. of Atmospheric Science
   Colorado State University
   Fort Collins, CO 80521
   USA
   Phone: 970-491-8350
   Fax: 970-491-8449
   E-Mail Address: soniak@aerosol.atmos.colostate.edu

Or

   Fred Brechtel
   Dept. of Atmospheric Science
   Colorado State University
   Fort Collins, CO 80521
   USA
   Phone: 970-491-8401
   Fax: 970-491-8449
   E-Mail Address: fredb@aerosol.atmos.colostate.edu

Please contact the principal investigator (Dr. Sonia Kreidenweis)
prior to using this dataset.

Data Set Description:

During the ACE-1 intensive measurement campaign the Aerosol Chemistry group
in the Dept. of Atmospheric Science at Colorado State University (CSU) carried
out continuous particle size distribution measurements at Macquarie Island,
Tasmania. The measurements were performed between November 22 and December
13, 1995.

A differential mobility particle sizing (DMPS) system was employed to conduct
the measurements. The DMPS system consisted of a TSI Model #3071 differential
mobility analyzer (DMA) and a TSI Model #3010 condensation particle counter
(CPC). The CPC was calibrated at the ACE-1 CPC calibration workshop at the
University of Washington. Size distributions were obtained between 18 and 540
nm. The measured raw distributions were inverted using a new data inversion
algorithm developed at the Institute for Tropospheric Research in Leipzig,
Germany. During the inversion the DMA transmission efficiencies and the CPC
counting efficiencies were accounted for. Size distribution have been corrected
for diffusional losses within the sample inlet tubing and the permeable membrane
dryer used to reduce the sample humidity to levels below 25% prior to entering
the DMA.


Format: space-delimited ASCII.

The inverted size distribution data are stored in a single file containing
1525 size distributions with the following format:

First row includes the midpoint diameter array to be used with the inverted
size distribution (dN/dlogDp) data. Diameter units are nanometers and
there are 53 diameter channels. The diameter values are spaced at
logarithmically equal intervals.

Second through last rows include the inverted 53 channel size
distribution data.

Each row contains the following information:

Column: Parameter
1: Date (YYYY/MM/DD) (UTC)
2: Time (HH:MM:SS) (UTC)
3: Decimal Day of Year (UTC)
4: Instrument Temperature (K)
5: Instrument Pressure (mb)
6: Number of Size bins (always 53)
7-59: dN/dlogDp (or diameters for row one)


File Name Conventions:
   kr_dmps.dat

References:  None.