Useful Datasets

This page includes Colorado climatological data, readings from ozone monitors for previous years, radiosonde data information for use in mixing height calculations, and a profile of Lotsonox.

Information on temperature, pressures, and relative humidities can be found at several sources. The meteorologist can use these sources or other sources of his/her choosing:

Table of Contents:

Temperature Relative Humidities and Pressure Ozone Monitoring Data
Radiosonde Data Sources Plant State Implementation Profile (SIP)

Temperature:

One recommended procedure for determining hourly temperatures is to determine 30-year seasonal temperature averages (say from 1961-1991), and then use these values to determine reasonable hourly averages.

Relative Humidity Data

Winter months - Dec., Jan., Feb.

Hour Relative Humidity (%)
800 55.0
900 54.0
1000 52.0
1100 48.0
1200 45.0
1300 43.0
1400 39.0
1500 35.0
1600 33.0
1700 32.0
1800 33.0
1900 35.0
Pressure (mb) 940



Spring months - Mar., Apr., May

Hour Relative Humidity (%)
800 50.0
900 47.0
1000 43.0
1100 41.0
1200 37.0
1300 35.0
1400 32.0
1500 30.0
1600 28.0
1700 29.0
1800 31.0
1900 33.0
Pressure (mb) 940



Summer months - June, July, Aug.

Hour Relative Humidity (%)
800 40.0
900 39.0
1000 38.0
1100 37.0
1200 35.0
1300 33.0
1400 31.0
1500 29.0
1600 27.0
1700 25.0
1800 27.0
1900 28.0
Pressure (mb) 940



Fall months - Sept., Oct., Nov.

Hour Relative Humidity (%)
800 48.0
900 46.0
1000 43.0
1100 40.0
1200 37.0
1300 35.0
1400 33.0
1500 31.0
1600 30.0
1700 31.0
1800 33.0
1900 34.0
Pressure (mb) 940

Ozone Monitoring Data:

Urban Monitor Data

O3 (ppm) Date
0.15 4/18/95
0.14 5/9/95
0.11 8/6/95
0.12 12/13/95
0.12 12/21/95

Downwind Monitor Data

O3 (ppm) Date
0.11 6/13/94
0.12 8/2/94
0.10 10/23/94
0.10 2/26/95
0.11 4/12/95

Upwind Monitor Data

O3 (ppm) Date
0.14 4/2/94
0.15 9/6/94
0.13 3/22/95
0.12 4/11/96
0.12 9/22/96

Radiosonde Data Sources

 Atmospheric Soundings for the United States

CoVIS Weather Visualizer:

Choose "Upper Air Soundings", then either "Stuve" or "Skew-T" diagrams. Both give a plot of the sounding as well as a table summary of the sounding with wind, temperature, and height data at all the significant pressure levels.

Likely candidates for selection of cities are Denver (DNR), Dodge City Kansas (DDC), and Amarillo Texas (AMA). Radiosonde soundings are only taken twice a day, 0000 UTC and 1200 UTC.

Plant State Implementation Profile (SIP):

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