United States Office of Air Quality EPA-450/4-83-015a
Environmental Protection Planning and Standards September 1983
Agency Research Triangle Park NC 27711
_
&EPA Northeast Corridor
Regional Modeling
Project -
Urban Field
Studies Data
Base Description
-------
EPA-450/4-83-015a
Northeast Corridor Regional Modeling Project -
Urban Field Studies
Data Base Description
Warren P. Freas
Air Management Technology Branch
Monitoring and Data Analysis Division
U.S ENVIRONMENTAL PROTECTION AGENCY
Office of Air, Noise and Radiation
Office of Air Quality Planning and Standards
Research Triangle Park, North Carolina 27711
September 1983
-------
This report has been reviewed by the Office of Air Quality
Planning and Standards, EPA, and approved for publication.
Mention of trade names or commercial products is not intended
to constitute endorsement or recommendation for use.
-------
PREFACE
This report is a companion volume to EPA-450/4-82-018, "Northeast
Corridor Regional Modeling Project - Description of the 1980 Urban Field
Studies," which provides a complete description of the data collection
process. The Northeast Corridor Regional Modeling Project (NECRMP) is a
multiphase program involving EPA and State/local agencies in the develop-
ment of the regional oxidant model and its application of the Northeastern
United States.
This document contains a description of the Northeast Corridor
Regional Modeling Project Urban Field Studies data base which has been
archived on magnetic tape. The data base consists of (1) surface air
quality and meteorological measurements, (2) upper air temperature and
wind profiles, and (3) mixing heights obtained by acoustic radar (SOOAR).
The data base described in this report is available on magnetic tape
as EPA-450/4-83-015b and can be acquired in either of two ways:
1. Government and nonprofit agencies may obtain a copy of the
program by sending a blank magnetic tape and written request to:
NECRMP Data Coordinator
Air Management Technology Branch/MDAD (MD-14)
U.S. Environmental Protection Agency
Research Triangle Park, North Carolina 27711
2. Others wishing a copy of the tape may purchase it from
the National Technical Information Service, Springfield, Virginia 22161,
telephone (703) 557-4650.
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TABLE OF CONTENTS
Page
List of Tables v
List of Figures vi
1.0 Background 1
2.0 Introduction 2
3.0 Surface Air Quality and Meteorological Measurements .... 4
3.1 Surface Air Quality Data 4
3.2 Surface Meteorological Data 10
4.0 Upper Air Meteorological Measurements 16
4.1 Upper Air Temperature Profiles 16
4.2 Upper Air Winds 16
4.3 Sodar Mixing Heights 16
5.0 Supplemental Surface Air Quality and Meteorological Data . 20
5.1 SAROAD Air Quality Data 20
5.2 SAROAD Meteorological Data 20
Appendices
A. NECRMP Air Quality Site Inventory A-l
B. NECRMP Meteorological Site Inventory B-l
C. SAROAD Air Quality Site Inventory C-l
D. SAROAD Meteorological Site Inventory D-l
iv
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LIST OF TABLES
Number Page
1 NECRMP Hourly Surface Air Quality and Meteorological
Data in SAROAD Hourly Data Format 5
2 SAROAD Parameter Codes 6
3 SAROAD Reporting Unit Codes 11
4 SAROAD Project Codes 12
5 SAROAD Agency Type Codes 13
6 NECRMP Upper Air Temperature Sounding Data Format 17
7 NECRMP Upper Air Wind Profile Data Format 18
8 Sodar Mixing Height Data Format 19
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LIST OF FIGURES
Number Page
1 NECRMP Ozone Monitoring Site Locations 7
2 NECRMP NMOC Monitoring Site Locations 8
3 NECRMP NOX Monitoring Site Locations 9
4 NECRMP Temperature and Solar Radiation Site Locations ... 14
5 NECRMP Wind Speed and Direction Site Locations 15
6 Supplemental SAROAD Ozone Site Locations 21
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1.0 BACKGROUND
The Northeast Corridor Regional Modeling Project (MECRMP) is being
conducted to support the development of effective ozone control strategies
for the large cities in the Northeast Corridor. During Summer 1980,
field programs were conducted to acquire the ambient air quality and
meteorological data needed to apply the urban models in the major corridor
cities. This monitoring effort included the following four tasks: (1)
continuous surface air quality and meteorological measurements, (2) air
quality measurements aloft, (3) upper air meteorological measurements,
and (4) hydrocarbon species measurements. A complete description of the
monitoring program can be found in the companion report, "Northeast
Corridor Regional Modeling Project - Description of the 1980 Urban Field
Studies," EPA-450/4-82-018.
-------
2.0 INTRODUCTION
The purpose of this document is to describe the MECRMP data that has
been archived on magnetic tape. The data base consists of the following
five data sets:
1. surface air quality data
2. surface meteorological data
3. upper air temperature profiles
4. upper air wind profiles
5. acoustic radar mixing height measurements
Supplemental air quality and meteorological data have also been included
in the data base. Although not collected as part of NECRMP, air quality
and meteorological data were obtained for sites in the Northeast which
routinely report to SAROAO (Storage and Retrieval of Aerometric Data).
These data have been recorded in the following two data sets:
6. SAROAD surface air quality data
7. SAROAD surface meteorological data
As noted above, these seven data sets have been archived on magnetic
tape. The tape has been cataloged on the UNIVAC 1100 system at the U.S.
Environmental Protection Agency's National Computer Center (NCC) at the
Research Triangle Park, North Carolina. Users wanting to access the tape
should assign the file named 'NECRMP*DATA-8ASE'. Each data set is recorded
in 'COPY,G' format in the order listed above. All data sets are fixed
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length and recorded in ASCII character code. The following sections
contain detailed descriptions of each data set.
In addition to the above data sets, aircraft monitoring data collected
in the Boston, New York and Washington, DC urban areas during Summer 1980
are available from the NECRMP Data Coordinator upon request. Also,
requests for the NECRMP hydrocarbon species data should be directed to
Mr. William Lonneman, Environmental Sciences Research Laboratroy (ESRL),
U.S. Environmental Protection Agency, MD-84, Research Triangle Park,
North Carolina 27711.
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3.0 SURFACE AIR QUALITY AND METEOROLOGICAL MEASUREMENTS
During NECRMP, hourly measurements were obtained at fixed monitoring
sites for selected air quality and meteorological parameters. These data
were recorded in SAROAD hourly data card format as depicted in Table 1,
As noted in Table 1, each data record is an 80 column "card image"
record, with 12 hourly data values per "card." The start hours for each
data record are either "00" indicating midnight or "12" indicating noon,
Local Standard Time. The decimal point (DP) indicator designates the
number of places to the right of the decimal point in the value entries.
The DP code applies to all entries on that record or "card." Normally,
two records are reported for each day, unless all the measurements are
missing for either half of the day. In this event, a record is typically
not produced. Thus, the data user must process each record independently
and not assume that two records are present for each day. In keeping
with standard SAROAD coding conventions, all missing data have been
nine's filled (i.e., '9999').
3.1 Surface Air Quality Data
Table 2 provides a list of the seven pollutants, and their
corresponding SAROAD parameter codes, for which hourly concentration
measurements were obtained during NECRMP. The site locations for the
NECRMP monitoring network are shown in Figures 1 through 3. A complete
inventory for the 79 NECRMP air quality monitoring sites is provided as
Appendix A.
-------
Table 10 NECRMP Hourly Surface Air Quality and Meteorological
Data in SAROAD Hourly Data Format
COLUMN(s)
1
2- 3
4- 7
8-10
11
12-13
14
15-16
17-18
19-20
21-22
23-27
28-29
30-31
32
33-36
37-40
41-44
45-48
49-52
53-56
57-60
61-64
65-68
69-72
73-76
77-80
FORMAT
12
12
14
13
Al
12
11
12
12
12
12
14
12
12
n
14
14
14
14
14
14
14
14
14
14
14
14
DESCRIPTION
'!' indicates hourly data
State code s
]
Area code 1
Site number ! SAROAD SITE NUMBER
Agency code j
Project code '
Time interval , i0e., T for hourly data
Year
Month
Day
Start hour, i.e., '00' or '12'
Parameter code
Method code
Units code
Decimal point indicator
Reading 1
Reading 2
Reading 3
Reading 4
Reading 5
Reading 6
Reading 7
Reading 8
Reading 9
Reading 10
Reading 11
Reading 12
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Table 2, SAROAD Parameter Codes.
Code
Parameter
44201
42601
42602
42603
43102
43201
42101
61101
61102
61104
62101
63301
61301
Ozone, 03
Nitrogen Oxide, NO
Nitrogen Dioxide, N0a
Oxides of Nitrogen, NOX
Nonmethane Organic Compounds, NMOC
Methane, CH^
Carbon Monoxide, CO
Wind speed, MS
Wind direction, WD
Resultant wind direction, WD-R
Ambient temperature, T
Solar radiation, SR
Mixing height
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Figure 1. NECRMP Ozone Monitoring Site Locations,
-------
Figure 2. NECRMP NMOC Monitoring Site Locations.
-------
Figure 3. NECRMP NOX Monitoring Site Locations,
-------
All the air quality concentration values are recorded in parts per
million by volume (ppmV), except for the hydrocarbon data which are
recorded in parts per million carbon (ppmC). SAROAD project and agency
codes are listed in Tables 4 and 5, respectively. Finally, the size of
the data set is 34,771 "SAROAD CARD images" or data records.
3.2 Surface Meteorological Data
Hourly observations were obtained for five meteorological parameters
during NECRMP; wind speed and direction, resultant wind direction, ambient
temperature, and solar radiation. Table 2 lists the SAROAD codes for
each of the meteorological parameters, the reporting units and codes are
listed in Table 3. Figures 4 and 5 show the locations of each meteoro-
logical monitoring site. Appendix B provides an inventory of the 41
NECRMP surface meteorological monitoring sites, and 17,784 data records,
archived in the data base.
10
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Table 30 SAROAD Reporting Unit Codes
Code
Number Units Parameter(s)
07 parts per million all air quality values*
11 meters per second wind speed
14 degrees - compass (1°-360°) wind direction
17 degrees - centigrade ambient temperature
25 1 angleys/minute solar radiation
58 meters (AGL) sodar mixing height
*NOTE: Units are parts per nil!ion carbon (ppmC) for nonmethane organic
compounds (NMOC) and for methane (CHU).
n
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Table 40 SAROAD Project Codes.
Code Project Description
01 population-oriented surveillance
02 source-oriented ambient surveillance
03 background surveillance
04 complaint investigation
05 special studies
06 episode monitoring
08 global surveillance
09 duplicate sampling
10 continuous air monitoring program
12
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Table 5. SAROAD Agency Type Codes.
CODE DESCRIPTION
A - E EPA Headquarters
F State agency
G County agency
H City agency
I District agency
J Private
K Institution (university, college, etc.)
L Military
M International agency
N Other Federal nonmilitary agencies
P EPA Regional Office group responsible for
atmospheric surveillance
13
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Figure 4. NECRMP Temperature and Solar Radiation Site Locations
14
-------
Figure 5. NECRMP Wind Speed and Direction Site Locations,
15
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4.0 UPPER AIR METEOROLOGICAL MEASUREMENTS
Three types of measurement programs were used to obtain upper air
meteorological observations during NECRMP. These included rawinsonde
soundings for temperature and wind profiles, pilot balloon observations
(pibals) for wind profiles and sodars for low level mixing heights.
4.1 Upper Air Temperature Profiles
Table 6 provides the data format for the upper air temperature
soundings. The locations of the six measurement stations are also displayed
in the table. This data set contains a total of 12,151 data records, or
sounding 1 eve!s.
4.2 Upper Air Winds
During NECRMP, upper air wind profiles were obtained by rawinsonde
soundings or pibals. These data have been combined into the single data
set described in Table 7. The measurement station locations are noted in
the table, also. A total of 71,534 sounding levels (records) have been
archived in this data set.
4.3 Sodar Mixing Heights
Data obtained from the sodar were reduced into 30-minute average
mixing height values. These data have been archived in SAROAD hourly
data format as depicted in Table 8. Since these data are 30-minute, not
hourly, averages, there are four data records for each day with corre-
spondng start hours of '00,' '06,' '12,' and '18' Eastern Standard Time.
All four records have been provided for each day, for a total of 1488
data records.
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Table 6. NECRMP Upper Air Temperature Bounding Data Format.
COLUMN(s)
2- 3
5- 6
8- 9
n-i4
17
18
21-22
23-24
25-32
33-40
41-48
49-56
57-64
FORMAT
12
12
12
14
n
n
12
12
F8.1
F8J
F8.1
F8.1
F8.1
DESCRIPTION
Year
Month
Day
Hour, EST
Site type, '1 '
Site number*
Level of sounding
Number of sounding levels
Pressure, millibars
Height, meters (AGL)
Temperature, °C
Dew Point Temperature, °C
Dew Point Depression, °C
* Site Locations:
1 - Baltimore, MD
2 - Boston, MA
3 - Derby, CT
4 - Newark, NJ
5 - Marlboro, NJ
6 - Washington, DC
17
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Table 79 NECRMP Upper Air Wind Profile Data Format.
COLUMN(s)
2- 3
5- 6
8- 9
11-14
17
18
21-22
23-24
25-32
33-40
41-48
49-56
57-64
*Site Locations:
PIBAL
FORMAT
12
12
12
14
11
11
12
12
F8ol
F8.1
F8.1
F8.1
F8.1
DESCRIPTION
Year
Month
Day
Hour, EST
Site type, 0 = PIBAL
1 = Rawinsonde
Site number*
Level of sounding
Number of sounding levels
Height, meters (AGL)
Height, feet (AGL)
Windspeed, mps
VJindspeed, nph
Wind direction, degrees
RAWINSONDE
1 - Bel Aire, MD
2 - Beverly, MA
3 - Glen Cove, NY
4 - Med field, MA
5 - Morristown, NJ
6 - Manassas, VA
1 - Baltimore, MD
2 - Boston, MA
3 - Derby, CT
4 - Newark, NJ
5 - Marlboro, NJ
6 - Washington, DC
18
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Table 8. Sodar Mixing Height Data Format.
COLUMN (s)
1
2- 3
4- 7
8-10
11-14
15-16
17-18
19-20
21-22
23-27
28-29
30-31
32
33-36
37-40
41-44
45-48
49-52
53-56
57-60
61-64
65-68
69-72
73-76
77-80
FORMAT
12
12
14
13
4x
12
12
12
12
14
12
12
11
14
14
14
14
14
14
14
14
14
14
14
14
DESCRIPTION
'!' indicates hourly data format
State code 1
> SAROAD Codes
Area code J
Si te number
Mot used
Year
Month
Day
Start time, i.e., '00,' '06,' '12,' or '18'
Parameter code, i.e., '61301'
Method code, i .e. , '12'
Units code, i.e., '58'
Decimal
Readi
Readi
Readi
Readi
Readi
Readi
Readi
Readi
Readi
Readi
Readi
Readi
ng
ng
ng
ng
ng
"9
ng
ng
ng
ng
ng
ng
point i
1 -
2 -
3 -
4 -
5 -
6 -
7 -
8 -
9 -
10 -
11 -
12 -
30
30
30
30
30
30
30
30
30
30
30
30
ndicator, i.e., '0'
mi
mi
mi
mi
mi
mi
mi
mi
mi
nute
nute
nute
nute
nute
nute
nute
nute
nute
minute
minute
minute
average
average
average
average
average
average
average
average
average
average
average
average
19
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5.0 SUPPLEMENTAL SURFACE AIR QUALITY AND METEOROLOGICAL DATA
Air quality and meteorological measurements available from monitoring
sites in the Northeast were retrieved from SAROAD to supplement the NECRMP
data base. These data have been recorded in SAROAD hourly data format as
described in Section 2.0.
5.1 SAROAD Air Quality Data
Air quality data for 81 SAROAD sites located in the NECRMP study
area were retrieved for the monitoring time period. Figure 6 shows the
locations of these additional sites. A total of 26,287 data records (or
"SAROAD CARD images") were retrieved from SAROAD and archived with the
NECRMP data base.
Appendix C provides a complete site inventory for the supplemental
SAROAD air quality data.
5.2 SAROAD Meteorological Data
Hourly surface meteorological measurements reported at 27 SAROAD
monitoring sites in the Northeast for the NECRMP study period. The data
formats and reporting conventions of these data are the same as those
listed in Section 2.0 for the NECRMP surface meteorological data. This
data set consists of a total of 15,661 fixed-length records. A complete
site inventory is provided as Appendix D.
20
-------
Figure 6. Supplemental SAROAD Ozone Site Locations,
21
-------
APPENDIX A: NECRMP AIR QUALITY SITE INVENTORY
A-l
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