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This
page contains descriptions of abbreviations, acronyms, field names, and
table names used in conjunction with the speciation profiles.
- ALIAS1
-> ALIAS3 fields (see also CHEMXREF:INFO
page): Fields in CHEMXREF interactive file containing alternate text
descriptions of the compound. There can be many synonyms for the
compounds, and the CHEMNAME field is only intended to be one of the
more common text descriptions.
- ARBCHEM
field (see also CHEMXREF:INFO page):
Field in CHEMXREF (and ORGSPEC and PMSPEC) interactive file containing
the ARB's arbitrary 5 digit chemical code. This is not the same as any
code used by any other organization. It used to be referred to as the
SAROAD code, but that allowed for confusion, since other organizations
also used the "SAROAD" designation. The linkage to the CAS code is very
important, since the CAS code is the standard code used by many
organizations. Unfortunately, not all of the compound groupings
included in the ARB speciation profiles have CAS codes, and in some
cases there may be multiple CAS codes for a given ARB speciation
profile. The ARBCHEM code reduces the possibility of confusion.
- CAS
field (see also CHEMXREF:INFO page):
This is the code system of the Chemical Abstracts Service (CAS), which
is widely used for tracking chemical compounds. This is not a unique
code listing, and there are often many synonyms listed. In addition,
there are compound groupings used by the ARB that are not found in the
CAS code listing. Because of these reasons, the ARB uses its own unique
5 digit code (the ARBCHEM, described above) and then cross-links the
ARBCHEM code to the CAS code, whenever a CAS code exists for the
ARBCHEM code. The CAS code can then be used to link to codes used by
other organizations.
- CASALIAS
field (see also CHEMXREF:INFO page):
In some cases, there may be more than one CAS code that links to a
given ARBCHEM code. This should rarely happen, but the CASALIAS field
is present to capture one alias, if there is one.
- CHEMNAME
field (see also CHEMXREF:INFO page):
Field in CHEMXREF (and ORGSPEC and PMSPEC) interactive file containing
the text description of the compound. There can be many synonyms for
the compounds, and the CHEMNAME field is only intended to be one of the
more common text descriptions.
- CHEMXREF
interactive file (see also CHEMXREF:INFO page):
This interactive file contains the unique ARBCHEM chemical code listing
for the compounds in the ARB's TOG (total organic gas) and PM
(particulate matter) speciation profiles. It also contains the CHEMNAME
text descriptions of the compounds, and the CAS (Chemical Abstracts
Service) codes for cross-referencing to the chemical codes of other
organizations.
- DATACOMMENT
field (see also ORGPROF:INFO and PMPROF:INFO
pages): Field in ORGPROF and PMPROF interactive files, that may contain
additional background, or status information, on the data used to
produce the profile.
- GEOVARLINK
field (see also ORGPROF:INFO and PMPROF:INFO
pages): Field in ORGPROF and PMPROF interactive files that links to
geographically specific speciation information. Currently, this field
has no entries for any profile, because no ARB profiles have different
profiles assigned on a geographic basis. However, in the future,
certain profiles will probably have default statewide speciation data,
along with geographically-specific speciation data. An example might be
soil emissions speciation data.
- ORGPRFCD
field (see also ORGPROF:INFO page):
Field in ORGPROF interactive file containing the TOG (total organic
gas) profile code assigned to the speciation profile. This code is an
arbitrary code assigned by the ARB.
- ORGPROF
interactive file (see also ORGPROF:INFO page):
The base file for the organic speciation profiles. It contains the
unique listing of the organic profile codes and the profile descriptive
name. It also contains the fraction of TOG that is ROG, which, in
itself, is a speciation.
- ORGSPEC
interactive file (see also ORGSPEC:INFO page):
This interactive file contains the actual weight fraction (WTFRACOFTOG)
that each compound is of the TOG (total organic gas) emitted by a
source.
- PM or
PMT or TSP: Total suspended particulate matter: On this web
site, PM and PMT actually refer to TSP (total suspended particulate
matter)
- PM10:
Particulate matter less than 10 microns.
- PM25:
Particulate matter less than 2.5 microns.
- PMPRFCD
field (see also PMPROF:INFO page):
Field in PMPROF interactive file containing the particulate matter
profile code assigned to the speciation profile. This code is an
arbitrary code assigned by the ARB.
- PMPROF
interactive file (see also PMPROF:INFO page): The
base file for the particulate matter speciation profiles. It contains
the unique listing of the particulate matter profile codes and the
profile descriptive name. It also contains the total weight fraction
fields (WTFRACPM10, and WTFRACPM2PT5) for PM10 and PM25. These total
fractions are then multiplied by the corresponding chemical weight
fraction fields in the PMSPEC file.
- PMSPEC
interactive file (see also PMSPEC:INFO page):
This interactive file contains the actual weight fractions
(WTFRACOFPMT, WTFRACOFPM10, and WTFRACOFPM2PT5) that each compound is
of the total particulate matter (PMT), particulate matter less than 10
microns (PM10), and particulate matter less than 2.5 microns (PM25),
respectively. Unlike the TOG-based speciation, these fractions have to
be multiplied by size fraction data (contained in the PMPROF) file,
before they can be multiplied by the PMT-based emissions estimates
found in the ARB's CEIDARS database.
- PRFCOMMENT
field (see also ORGPROF:INFO and PMPROF:INFO
pages): Field in ORGPROF and PMPROF interactive files, that may contain
additional background, or status information on the profile.
- PRFNAME
field (see also ORGPROF:INFO and PMPROF:INFO
pages): Field in ORGPROF and PMPROF interactive files that contains the
descriptive name for the TOG or PM profile.
- REFLINK1
-> REFLINK3 fields (see also ORGPROF:INFO
and PMPROF:INFO pages):
Fields in ORGPROF and PMPROF interactive files that links to reference
information on how the profile was developed. In some cases, the page
linked to by the REFLINK field may contain live links to electronic
versions of the reference documents in various formats (e.g., Excel,
Adobe Acrobat, Word, etc.).
- ROG:
Reactive organic gases: Compounds of carbon, excluding: Carbon
monoxide, carbon dioxide, carbonic acid, metallic carbides or
carbonates, and ammonium carbonate, and the list of excluded compounds
that can be found on the ROG
definitions page, on this web site.
- SCC
field (see also SCCLIST:INFO page):
Field in SCCLIST (and SCCORG and SCCPM) interactive files containing
the Source Category Codes (SCC's) assigned to emission sources. This
field may contain SCC codes (as used by the USEPA and ARB) or EIC
(Emission Inventory Code) codes, which are 14 digit codes defined and
used by the ARB. The ARB uses both the SCC and EIC codes to define
emissions in its CEIDARS database. These codes will allow you to link
to the emissions estimates in the CEIDARS database, in order to
speciate the emissions.
- SCC1N
-> SCC8N fields (see also SCCLIST:INFO
page): Fields in SCCLIST (and SCCORG and SCCPM) interactive files
containing text descriptions of the SCC field, and subsets of the SCC
field.
- SCCLIST
interactive file (see also SCCLIST:INFO page):
This interactive file contains the unique listing of the codes used to
link both the organic and particulate matter speciation data to the TOG
(total organic gas) and PMT (total particulate matter) data in CEIDARS.
It also contains the SCC1N -> SCC8N fields, which contain
categorical descriptions.
- SCCORG
interactive file (see also SCCORG:INFO page):
This interactive file contains the unique listing of the codes used to
link the organic matter speciation data to the TOG (total organic gas)
data in CEIDARS. It also contains the SCC1N -> SCC8N fields,
which contain categorical descriptions.
- SCCPM
interactive file (see also SCCPM:INFO page):
This interactive file contains the unique listing of the codes used to
link the particulate matter speciation data to the PMT (total
particulate matter) data in CEIDARS. It also contains the SCC1N
-> SCC8N fields, which contain categorical descriptions.
- SPECIE
(see also CHEMXREF:INFO page):
Field in CHEMXREF (and PMSPEC) interactive file containing short text
codes representing the text description of the compound. These are only
currently used for particulate matter-related compounds.
- TOG:
Total organic gases: Compounds of carbon, excluding carbon monoxide,
carbon dioxide, carbonic acid, metallic carbides or carbonates, and
ammonium carbonate.
- TSP or
PM or PMT: Total suspended particulate matter: On this web
site, PM and PMT actually refer to TSP (total suspended particulate
matter)
- WTFRACOFPMT,
WTFRACOFPM10, WTFRACOFPM2PT5 fields (see also PMSPEC:INFO
page): Fields in the PMSPEC interactive file containing the speciated
chemical weight fraction that a given ARBCHEM entry compound is of the
PMT (total suspended particulate matter), PM10 (particulate matter less
than 10 microns) or PM2pt5 (particulate matter less than 2.5 microns)
total weight fraction. Before applying the PM10 or PM2pt5 chemical
weight fraction data, you must first multiply the WTFRACPM10 or
WTFRACPM2PT5 non-speciated total weight fraction fields contained in
the PMPROF interactive file by the base PM (total suspended particulate
matter) emissions.
- WTFRACOFTOG
field (see also ORGSPEC:INFO page):
Field in the ORGSPEC interactive file containing the speciated chemical
weight fraction that a given ARBCHEM entry compound is of the TOG
(total organic gas).
- WTFRACPM10,
WTFRACPM2PT5 fields (see also PMPROF:INFO
page): Fields in PMPROF interactive file containing the WTFRACPM10 or
WTFRACPM2PT5 non-speciated total weight fraction fields, which are
multiplied by the base PM (total suspended particulate matter)
emissions.
- WTFRACROG
field (see also ORGPROF:INFO page):
Field in ORGPROF interactive file containing the fraction, by weight,
that the ROG (reactive organic gas: see also ROG definition link) is of
the TOG (total organic gas).
- YEAR
field (see also SCCLIST:INFO page):
Field in SCCLIST (and SCCORG and SCCPM) interactive files. The YEAR
field will contain either the currently selected inventory year, or a
zero (0). If the field contains a zero, then that indicates that that
SCC code is assigned to the same organic profile, regardless of year.
If there is a year (1990, 2000, 2001 -> 2006, 2010, or 2020),
then that indicates that the SCC may be assigned to a different PM or
TOG profile code for different years.
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