Size Distribution Data for: UBWOS 2012

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UBWOS: Uintah Basin Winter Ozone Study 2012  Horsepool, Utah 40.1436 N, 109.4677 W 15-January-2012 to 29-February-2012 Link to more UBWOS pages

UBWOS Sizing Download Info

24-May-2013

PLEASE NOTE: These data are subject to revision.

1. The first data set include particle number-size distributions in the diameter range of 0.011 to 0.478 micrometers Stokes diameter made with an SMPS. All measurements were made at a relative humidity of <25%. The distributions have been cleaned of all data from times of instrument malfunction or calibration.
   files: UBWOS_nsd_smps_vX.csv

2. The second data set include particle number-size distributions in the diameter range of 0.96 to 10 micrometers aerodynamic diameter. The APS diameters are aerodynamic and have not been corrected to Stokes diameter via calculation or estimates of particle density. The APS data larger than 10 micrometers are not useful due to significant particle losses in the inlets including the sampling mast, distribution tubing and APS inlet. All measurements were made at a relative humidity of <25%. The APS data have been cleaned exactly like the DMPS files described above.
   file: UBWOS_nsd_aps_vX.csv

Table 1: Filename keywords

More information about these data can be found by clicking on the blue "Instrument Information" tab above.

The following files are available for downloading. Please note: one data file may cover more than one time period, thus,some files may be listed more than once. All files are in csv (comma separated value) format. After several lines of general information each file starts with a first row that contains the particle diameter in microns for that column. The first column contains the date/time in Day-of-Year, DOY. DOY 32.5 is 1200 noon UTC on 1-February. All data are in units of dN/dlog10(Dp), N/cm^3. Missing data are designated by a -99 or a -999.

U.S.Dept of Commerce / NOAA / OAR / PMEL / Atmospheric Chemistry