Title: Macquarie Island DMS Measurements

Contact:

   Hilton Swan
   AGAL - Tasmania Regional Lab
   Channel Highway, P.O. Box 84
   Kingston, Tasmania, AUSTRALIA, 7050
   Telephone: (61) 02-291-755
   Facsimile: (61) 02-292-836
   E-Mail Address: hilton_swa@antdiv.gov.au


Data Set Description:

The following dataset is the atmospheric concentrations of
Dimethylsulfide (DMS) measured at Macquarie Island by Hilton Swan
(Australian Government Analytical Laboratories) during a three month period
including the ACE-1 field program. The DMS data defines the start and stop
time for each sample in UTC, and is reported as ng/m3 and nmol/m3.
Certain meteorological parameters were also recorded, from the 1
minute average on-line Automatic Weather Station (AWS), at the start of each
DMS sample and these are also listed in the data set. Analytically the DMS
measurements were obtained following oxidant and moisture removal
from the air stream. Methylethyl sulphide was introduced with each
sample as an internal standard, and a pulsed PFD was used for the
selective detection of DMS. The data was processed and quality
controlled during the ACE-1 field program, and the instrumentation
was comparatively compared with similar instrumentation operating
at Cape Grim before and after the ACE-1.

The only restrictions on the data is that Hilton Swan is acknowledged
for its source.

The data is believed to be accurate to +/- 12% CV.

The headers at the top of the file should be clear as: atmospheric
Dimethylsulphide concentration, wind speed and direction, dry bulb
and wet bulb temperature and sea level pressure. This data was
obtained from the 1 minute average AWS at the start of each DMS
sample.

Format: comma-delimited ASCII.

UTC_Start Date (YYYY/MM/DD)
UTC_Start Time (HH:MM:SS)
UTC_Stop Date (YYYY/MM/DD)
UTC_Stop Time (HH:MM:SS)
Start Date UTC (YY-MM-DD)
Start Time UTC (H:MM)
Stop Date UTC (YY-MM-DD)
Stop Time UTC (H:MM)
DMS (ng/m3)
DMS (nMol/m3)
WS (knots)
WD (degrees)
AT (C)
WB (C)
QFF (hPa)
ABS (WB dep/AT)

File Name Conventions:
   dms_swan.dat

References: None.