&EPA
United States
Environmental Protection
Agency
Environmental Sciences Research
Laboratory
Research Triangle Park NC 27711
EPA-600 4-79-001
January 1979
Research and Development
Regional Air
Pollution Study
Lambert Field
Graphical Weather
Summary
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RESEARCH REPORTING SERIES
Research reports of the Office of Research and Development, U.S. Environmental
Protection Agency, have been grouped into nine series. These nine broad cate-
gories were established to facilitate further development and application of en-
vironmental technology. Elimination of traditional grouping was consciously
planned to foster technology transfer and a maximum interface in related fields.
The nine series are-
1. Environmental Health Effects Research
2. Environmental Protection Technology
3. Ecological Research
4. Environmental Monitoring
5. Socioeconomic Environmental Studies
6. Scientific and Technical Assessment Reports (STAR)
7. Interagency Energy-Environment Research and Development
8. "Special" Reports
9 Miscellaneous Reports
This report has been assigned to the ENVIRONMENTAL MONITORING series.
This series describes research conducted to develop new or improved methods
and instrumentation for the identification and quantification of environmental
pollutants at the lowest conceivably significant concentrations. It also includes
studies to determine the ambient concentrations of pollutants in the environment
and/or the variance of pollutants as a function of time or meteorological factors.
This document is available to the public through the National Technical Informa-
tion Service, Springfield, Virginia 22161.
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EPA-600/4-79-001
January 1979
REGIONAL AIR POLLUTION STUDY
Lambert Field Graphical Weather Summary
by
Robert B. Jurgens
Atmospheric Modeling and Assessment Branch
Environmental Sciences Research Laboratory
Research Triangle Park, North Carolina 27711
and
William T. Smith
Potomac Research, Incorporation
Research Triangle Park, North Carolina 27711
ENVIRONMENTAL SCIENCES RESEARCH LABORATORY
OFFICE OF RESEARCH AND DEVELOPMENT
U.S. ENVIRONMENTAL PROTECTION AGENCY
RESEARCH TRIANGLE PARK, NORTH CAROLINA 27711
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DISCLAIMER
This report has been reviewed by the Environmental Sciences
Research Laboratory, U.S. Environmental Protection Agency, and approved
for publication. Mention of trade names or commercial products does not
constitute endorsement or recommendation for use.
ii
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ABSTRACT
Three-hour meteorological observations from Lambert Field, St. Louis,
Missouri are presented in graphical format for the three-year period
July 1974 to June 1977.
111
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INTRODUCTION AND DESCRIPTION OF GRAPHS
A graphical summary of National Weather Service (NWS) 3-hour
weather observations from Lambert Field Airport, St. Louis, Missouri has
been prepared for use by individuals involved in the analysis and application
of Regional Air Pollution Study (RAPS) data. It is intended as a reference
for selecting study periods with specific weather conditions or for
determining weather conditions that existed during periods under investigation.
The summary covers the data collection phase of RAPS from July 1974
through June 1977.
Lambert Field is located about 10 miles north west from downtown
St. Louis at 38° 45' N, 90° 23' W, and 535 feet above sea level.
All graphs are presented on a monthly basis. The ten weather
observations that are plotted are listed below. The Federal Meteorological
Handbook Number 1, Surface Observations, contains detailed descriptions
and NWS recording procedures for these parameters.
o Wind Speed (meters/second). The wind speed (WS) was given in
whole knots and converted to meters/second by using the
relation, WS in meters/second = .514097 x WS in knots.
o Wind Direction (degrees). The wind direction is expressed as
the direction from which the wind blows, indicated to the
nearest whole tens of degrees from true North (e.g. 90 for
East, 180 for South, and 270 for West). A reading of 0 degrees
indicates calm.
o Relative Humidity (percent). Relative humidity is the percent
of water vapor in the air relative to the amount that would be
present at saturation at the current dry bulb temperature.
o Dry Bulb Temperature (degrees Celsius) . The temperature was
given in whole degrees Farenheit and converted to Celsius by
using the relation, C = 5/9 x (F-32)
o Sea Level Pressure (millibars). The local barometer readings
were reduced to sea level pressure according to standard NWS
practice. One millibar = 10 dynes/cm .
o Visibility (miles). Reported values are "prevailing" visibility,
which is the greatest visibility attained or exceeded throughout
at least half the horizon circle.
1
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o Total Sky Cover (percent). Total sky cover is the amount of
sky covered by clouds at all levels. It is visually estimated
to the nearest whole ten percent.
o Ceiling Height (feet). Ceiling height is the height of the
lowest layer of clouds or obscuring phenomena when that layer
is reported as broken, overcast or obscuration. Ceiling was
recorded in hundreds of feet above ground to nearest 100 feet
up to 5000 feet, to nearest 500 feet up to 10,000 feet, and to
nearest 1000 feet above that.
The letter "U" on the graphs indicates an unlimited ceiling.
o Precipitation (water equivalent inches). Precipitation
is given on a daily basis. The letter "T" on the graph in-
dicates that a trace or immeasurable amount of precipitation
was recorded.
o Weather and/or Obstruction to Vision. This observation is
defined by the codes, listed below, broken down into 8 groups.
On the graph, the symbols for each group appear on one line at
the left edge of the graph. Each number which falls along
that line indicates which symbol was recorded based on its
position within the group, counting from left to right. The
groups are as follows:
T = Thunderstorm, TOR = Tornado, Q = Squall
R = Rain, RW = Rainshowers, ZR = Freezing rain
L = Drizzle, ZL = Freezing drizzle
S = Snow, SP = Snow pellets, 1C = Ice crystals
SW = Snow showers, SG = Snow grains
IP = Ice pellets, A = Hail, AP = Small hail
F = Fog, GF = Ground fog, BD = Blowing dust, BN = Blowing sand
H = Haze, K = Smoke, KH = Smoke and haze, BS = Blowing snow
Occasionally, there will be precipitation during a day but no
corresponding weather symbols. See October 4-5, 1974, for example.
This can happen when the precipitation takes place between 3-hour observations.
Observations represent instantaneous weather conditions taken just prior
to the hour.
Data were supplied by the Environmental Data Service, National
Climatic Center, National Oceanic and Atmospheric Administration.
Printed copies of this data may be found in the publication "Local
Climatic Data" (LCD) published by the U.S. Department of Commerce. The
LCD may be obtained by writing to: Director, National Weather Records
Center, Federal Building, Asheville, N.C. 28801. Also available from
the National Climatic Center are the regular hourly observations from
Lambert Field. These data are available on magnetic tape.
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP.
(IN.)
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SEPTEMBER 1974
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP.
(IN.)
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(FT.)
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VISIBILITY
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OCTOBER 1974
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
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DECEMBER 1974
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
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FEBRUARY 1975
10
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
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WEATHER
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WEATHER
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13
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER M.K.KN J r; 1
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JUNE 1975
14
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP.
(IN.)
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP.
(IN.)
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
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SEPTEMBER 1975
17
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
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(IN.)
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OCTOBER 1975
18
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
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NOVEMBER 1975
19
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
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(IN.)
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DECEMBER 1975
20
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP.
(IN.)
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DIRECTION
(DEC )
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JANUARY 1976
21
-------
LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP.
(IN.)
T=TRACE
CEILING
(FT.)
SKY
COVER
VISIBILITY
(Ml.)
PRESSURE
(MB)
TEMPERATURE
(DEG.C)
RELATIVE
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DIRECTION
(DEC.)
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FEBRUARY 1976
22
-------
LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP.
(IN.)
T=TRACE
CEILING
(FT.)
SKY
COVER
VISIBILITY
(Ml.)
PRESSURE
(MB)
TEMPERATURE
(DEG.C)
RELATIVE
HUMIDITY
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DIRECTION
(DEC )
WIND
SPEED
1M/S)
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23
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP.
(IN.)
T=TRACE
CEILING
(FT.)
SKY
COVER
VISIBILITY
(Ml.)
PRESSURE
(MB)
TEMPERATURE
(DEG.C)
RELATIVE
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(DEC.)
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(M/S)
22 Z 221
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24
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER H.K.HH.D w
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(IN.)
T=TRACE
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(DEC )
WIND
SPEED
IM S)
25
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP.
(IN.)
T=TRACE
CEILING
(FT.)
SKY
COVER
VISIBILITY
(Ml.)
PRESSURE
(MB)
TEMPERATURE 30 -
(DEG.C)
RELATIVE
HUMIDITY
WIND
DIRECTION
(DEC.)
WIND
SPEED
(M/S)
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26
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP.
(IN.)
T = TRACE
CEILING
(FT.)
SKY
COVER
VISIBILITY
(Ml.)
PRESSURE
(MB)
TEMPERATURE
(DEG.C)
RELATIVE
HUMIDITY
WIND
DIRECTION
(DEC.)
WIND
SPEED
(M/SI
; i u ii tiu
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JULY 1976
27
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WEATHER
PRECIP.
(IN.)
T=TRACE
CEILING
(FT.)
SKY
COVER
VISIBILITY
(Ml.)
PRESSURE
(MB)
TEMPERATURE
(DEG.C) 30 -|
20 H
RELATIVE
HUMIDITY
WIND
DIRECTION 240 -|
(DEC.)
LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
111 I I U UIU U U U UUI UUUUUUU UIIUUUUIIUUI UIIUIUIIIUUUI
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(M/S)
16 n
AUGUST 1976
28
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
UNU KITED
25000 4
10000 -
0
WEATHER
PRECIP.
(IN.)
T=TRACE
CEILING
(FT.)
SKY
COVER
VISIBILITY
(Ml.)
PRESSURE
(MB)
TEMPERATURE
(DEC C) 20
RELATIVE
HUMIDITY
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SEPTEMBER 1976
29
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP.
(IN.)
T = TRACE
CEILING
(FT.) 10000 H
SKY
COVER
VISIBILITY
(Ml.)
uuuiii uuuiuiuimuuuitiu ui ut UMI uu
> u i mi u
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PRESSURE
(MB)
TEMPERATURE
(DEG.C) 10
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HUMIDITY
WIND
DIRECTION
(DEC.)
WIND
SPEED
(M/S)
'10 ^5 20' ' '
OCTOBER 1976
30
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
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s.sr ic
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(IN.)
T = TRACE
CEILING
(FT.)
SKY
COVER
VISIBILITY
(Ml.)
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UNLIMITED
25000 4
10000 -
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TEMPERATURE
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RELATIVE
HUMIDITY
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DIRECTION
(DEC.)
WIND
SPEED
(M/S)
r—i 1—i 1 i—i—i—i 1 1 1 1 1 1 1 r—--i 1—i—i 1—i 1 1 1 1
31
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER H.,.KH.a.jj
i.Sf .1C
L.H.
ft.RM If
PRECIP.
(IN.)
T=TRACE
CEILING
(FT.)
SKY
COVER
VISIBILITY
(Ml.)
PRESSURE
(MB)
TEMPERATURE
(DEG.C)
RELATIVE
HUMIDITY
WIND
DIRECTION
(DEC.)
WIND
SPEED
(M/S)
UNLIMITED
25000 -
10000 -
I 1 1 "1 1 1 1 1 1 1 1 1 1 P 1 1 1 1 1 1 1 1 1 1 1 T 1 1 1
32
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
H « KM D Hi "
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31
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PRECIP.
(IN.)
T=TRACE
UNLIHITEO UllUI
25000 -
CEILING
(FT-) 10000 -\
SKY
COVER
VISIBILITY
(Ml.)
PRESSURE
(MB)
TEMPERATURE
(DEG.C) -10 -
RELATIVE
HUMIDITY
WIND
DIRECTION
(DEC )
WIND
SPEED
(M/S)
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JANUARY 1977
33
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP
(IN )
T=TRACE
CEILING
(FT.)
SKY
COVER
VISIBILITY
(Ml.)
PRESSURE
(MB)
TEMPERATURE
(DEG.C)
RELATIVE
HUMIDITY
WIND
DIRECTION
(DEC )
WIND
SPEED
IM/S)
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FEBRUARY 1977
34
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP.
(IN.)
= TRACE
CEILING
H.K.KH D.'i I ,
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WIND
DIRECTION
(DEC )
WIND
SPEED
(M/S)
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MARCH 1977
35
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
H.K.ltH.0.8*
WEATHER
PRECIP.
(IN.)
T = TRACE
CEILING
(FT.)
SKY
COVER
VISIBILITY
(Ml.)
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(MB)
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TEMPERATURE
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(DEC.)
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(M/S)
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APRIL 1977
36
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER H.K.IIH j.i-o 1 a. uui uui i i u i 't t
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VISIBILITY
(Ml.)
PRESSURE
(MB)
TEMPERATURE
(DEG.C)
RELATIVE
HUMIDITY
WIND
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(DEC )
WIND
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MAY1977
37
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LAMBERT FIELD, ST. LOUIS WEATHER SUMMARY
WEATHER
PRECIP.
(IN.)
T = TRACE
CEILING
(FT.)
SKY
COVER
VISIBILITY
(Ml.)
PRESSURE
(MB)
TEMPERATURE
(DEG.C)
RELATIVE
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(DEC )
WIND
SPEED
(M/S)
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JUNE 1977
38
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TECHNICAL REPORT DATA
(Plcaic read Inunctions on the reverse bcjore completing)
1 REPORT NO 2
EPA-6QO/4- 79-001
4 TITLE AND SUBTITLE
REGIONAL AIR POLLUTION STUDY
Lambert Field Graphical Weather Summary
7 AUTHOR(S)
Robert B. Jurgens and William Ted Smith**
9. PERFORMING ORG 1NIZATION NAME AND ADDRESS
(Same as 12)
12, SPONSORING AGENCY NAME AND ADDRESS
Environmental Sciences Research Laboratory - RT
Office of Research and Development
U. S. Environmental Protection Aqency
Research Triangle Park, NC 27711
15. SUPPLEMENTARY NOTES
** Potomac Research, Inc.
Research Trianale Park. NC 27711
3. RECIPIENT'S ACCESSION^ NO.
5. REPORT DATE
January 1979
6. PERFORMING ORGANIZATION CODE
8. PERFORMING ORGANIZATION REPORT NO.
10. PROGRAM ELEMENT NO.
1AA603 AA-49 (FY-78)
11. CONTRACT/GRANT NO.
13. TYPE OF REPORT AND PERIOD COVERED
P, NC In-hn(j<;p
14. SPONSORING AGENCY CODE
EPA/600/09
16. ABSTRACT
Three-hour meteorological observations from Lambert Field, St. Louis,
Missouri are presented in graphical format for the three-year period
July 1974 to June 1977.
17. KEY WORDS AND DOCUMENT ANALYSIS
a. DESCRIPTORS b.lDENTIFI
Air Pollution St
* Meteorological data
Graphic Methods
13 D!STRiBUT,C\ STATEMENT 19 SECURI
UMC
RELEASE TO PUBLIC 2° "^
ERS/OPEN ENDED TERMS c. COSATI Field/Group
. Louis, Mo. 13B
04B
12A
TY CLASS (This Report) 21 NO. OF PAGES
LASSIFIED ' 43
TY CLASS (Thispage) 22 PRICE
LASSIFIED
EPA Form 2220-1 (9-73)
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