Community Multiscale Air Quality Modeling System A 2022 Research Impact Metrics Analysis


Community Multiscale Air Quality Modeling System

A 2022 Research Impact Metrics Analysis

CMAQ TEAM
U.S. ENVIRONMENTAL PROTECTION AGENCY

[fL EPA-RTP

XtOSl LIBRARY

Report Prepared by the EPA-RTP Library
UNC Contractors
March 2023

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CONTENTS

ABOUT THIS REPORT

2

KEY METRICS & TAKEAWAYS	

PUBLICATION ANALYSIS	

Journals and Research Areas	

Funding and Collaborating Organizations,

Author Keywords and Topics	

Citation Topics	

4

4

7

8

3

5

ABOUT THIS REPORT

This report presents a summary-level bibliometric analysis of the 2022 publications which
referred to the Community Multiscale Air Quality Modelling System, or CMAQ. The dataset was
generated by a search in the Web of Science Core Collection and All Databases records using
the following strategy:

TOPIC=(CMAQ OR "community multiscale air quality" OR "community multi-scale air quality")

where the "TOPIC" field (TS) searches the Web of Science Core Collection records in the title,
abstract, keywords, and Keywords Plus® fields.1

The results (n=194) were collected on 10 January 2023 Analysis was completed using Web of
Science Analyze and Citation Report features and Incites. More information about the
methodology used and a full listing of the publications evaluated in this report are available
upon request tojohnson.taylor@epa.gov.

1 Web of Science Core Collection Help: Advanced Search Field Tags. Accessed from
http://webofscience.help.clarivate.com/Content/wos-core-collection/woscc-search-field-taas.htm

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KEY METRICS & TAKEAWAYS

CMAQ KEY METRICS & TAKEAWAYS

ON THE WEB AND IN
THE LITERATURE

194

dataset
papers

25

60

research
areas

source
titles

CMAS Center

Zenodo

GitHub

News
platforms


*

189 DOWNLOADS

923 DOWNLOADS (ALL VERSIONS)

175 FORKS

123 UNIQUE CLONES

17 MENTIONS

The dataset has already received

216 citations

in 2022 or 2023

Mentioned by
1047 authors

v-i

Top Org Types:

academic/univ systems
research institutes
government
nonprofit

92

across
239 organizations

\ &
.) 28 countries

166 papers referencing CMAQ in 2022 were funded entirely by non-US sources.

Organizational addresses in other countries included China, South Korea, United
Kingdom, Japan, Taiwan, Belgium, Bulgaria, Canada, Germany, and Hong Kong.

While most key terms were related to air research and health effects, 2022 publications
mentioning CMAQ touched on wildfires, transportation, and land use.

Of the 2022 authors who referenced CMAQ as indexed in the Core Collection, over
97% were not affiliated with EPA.

According to Incites data, academic organizations comprise 74% of institutional
affiliations for the 2022 papers mentioning CMAQ

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PUBLICATION ANALYSIS

The following section assesses the 2022 publications comprising the dataset resulting from the
CMAQ search detailed on page 2. For clarity, the figures showing the number of publications per
research area, journal, institution, and funding agency only list the top 10 results in each
category or next tie-breaking threshold.

Journals and Research Areas

Publications per Source Title

ATMOSPHERE



ATMOSPHERIC ENVIRONMENT

1 IF

SCIENCE OF THE TOTAL ENVIRONMENT

1 IF

ATMOSPHERIC CHEMISTRY AND PHYSICS

I IF 7.197



ENVIRONMENTAL SCIENCE TECHNOLOGY

1 IF 11.357



ATMOSPHERIC POLLUTION RESEARCH

I IF 4.831



AEROSOL AND AIR QUALITY RESEARCH

1 IF 4.53



ENVIRONMENTAL POLLUTION

I IF 9.988



JOURNAL OF GEOPHYSICAL RESEARCH ATMOSPHERES

1 IF 5.217



IF 3.11

10

15

20

25

# Publications

Figure 1: Number of CMAQ publications perjournal in Web of Science All Databases with the Journal
Impact Factor from JCR.

Publications per Research Area

ENVIRONMENTAL SCIENCES ECOLOGY
METEOROLOGY ATMOSPHERIC SCIENCES
PUBLIC ENVIRONMENTAL OCCUPATIONAL HEALTH

ENGINEERING
GEOLOGY |
COMPUTER SCIENCE |
TOXICOLOGY |
CHEMISTRY |
SCIENCE TECHNOLOGY OTHER TOPICS

20 40 60 80 100
# Publications

120

140

160

Figure 2: Number of CMAQ publications by the research area assigned by Web of Science to the journals
in which the articles were published. These categories are not mutually exclusive.

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Funding and Collaborating Organizations

Publications per Funding Source

NATIONAL NATURAL SCIENCE FOUNDATION OF... |
FUNDAMENTAL RESEARCH FUNDS FOR THE... |
NATIONAL RESEARCH FOUNDATION OF KOREA

NATIONAL SCIENCE FOUNDATION ¦
UNITED STATES ENVIRONMENTAL PROTECTION... |
UNITED STATES DEPARTMENT OF HEALTH &... |
NATIONAL INSTITUTES OF HEALTH ¦
CHINA POSTDOCTORAL SCIENCE FOUNDATION |

30 40

# Publications

Figure 3: Number of publications per InCites-indexed funding source.

Publications per Non-EPA Institution

CHINESE ACADEMY OF SCIENCES |

NANJING UNIVERSITY OF INFORMATION... |
TSINGHUA UNIVERSITY |

UNIVERSITY OF CALIFORNIA SYSTEM
FUDAN UNIVERSITY
CHINA METEOROLOGICAL ADMINISTRATION
GEORGIA INSTITUTE OF TECHNOLOGY
UNIVERSITY SYSTEM OF GEORGIA

# Publications

Figure 4: Number of CMAQ publications per non-EPA author-affiliated organization. Articles are counted
for an institution if at least one of the article's authors lists that institution as their affiliation. Compiled
from Web of Science Core Collection data.

Author-Affiliated Organizations by Type

ACADEMIC |

RESEARCH INSTITUTE
GOVERNMENT
NONPROFIT
CORPORATE
NATIONAL ACADEMY
PARTNERSHIP
RESEARCH COUNCIL

20 40 60 80 100

# Organizations

120

140

160

Figure 5: Number of author-affiliated organizations by type of organization. Each institution has been
listed by at least one author in the set as an affiliation. Compiled from Incites data.

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••

Figure 6: Distribution of CMAQ publications per co-authoring country. Publications are counted for an
institution if at least one of the article's authors lists that country as their affiliated institution's address.
Compiled from Web of Science data.

Country

Papers

Country

Papers

CHINA

97

VIETNAM

3

USA

75

GERMANY

2

SOUTH KOREA

25

AUSTRIA

1

UNITED KINGDOM

7

CHILE

1

TAIWAN

7

CZECH REPUBLIC

1

JAPAN

6

FINLAND

1

AUSTRALIA

4

GREECE

1

CANADA

4

IRELAND

1

INDIA

4

ISRAEL

1

MALAYSIA

4

ITALY

1

BRAZIL

3

NETHERLANDS

1

BULGARIA

3

SINGAPORE

1

FRANCE

3

SWITZERLAND

1

SPAIN

3

THAILAND

1

Table 1: Number of publications by country according to author affiliations. Compiled from Web of
Science All Databases data.

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Author Keywords and Topics

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WRF,

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.CALIOPi

lISamI

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Areas'

TRANSPORT

VIIRsj

&L,sJKm ;"AC TOnBHi JBV CONTRIBUTION

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^"METEOROLOGY	¦Wt£iP2S9	deposition



Top Author Keywords

CMAQ
OZONE
PM2.5
AIR QUALITY
AIRE POLLUTION
PM2

PARTICULATE MATTER
CHINA

EMISSION INVENTORY
PROCESS ANALYSIS

0 10 20 30 40 50 60 70
# Publications

Figures 7 and 8: Top 10 author-provided keywords from the Web of Science Core Coiiection with terms
with a frequency greater than 3 displayed in a word cioud powered by WordArt.com.

Top Author Keywords Plus

AIR-QUALITY
POLLUTION
MODEL
EMISSIONS
CHINA

PARTICULATE MATTER
PM2.5
IMPACT
OZONE

SOURCE APPORTIONMENT

0 10

20 30 40
# Publications

50

Figures 9 and 10: Top 10 Keywords Plus terms from the Web of Science Core Collection with terms with
a frequency greater than 3 displayed in a word cloud powered byWordArt.com.

HE'GKT

energyI

1IM ORISK

SITIViTY

S i M U L AT 10 N Sex po sure* HEALTH

I ym ¦	;,jj

EC0NDARY ORGANIC AEROSOL

K il Ao-3Eur

CITIES

URFACE OZONE

[TRANSPOm
liisasQUALITY

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Citation Topics

Citations Topics2 is a new schema available in Incites that algorithmically analyzes articles to
create clusters based on cited and citing relationships between documents. The schema is a
three-level hierarchical classification system consisting of macro-, meso-, and micro-topics.

Top Micro-Topics



AEROSOLS



AIR POLLUTION

¦ Mil

URBAN HEAT ISLAND

1

FOREST FIRES



TROPICAL CYCLONES



THROUGHFALL



FRACKING



HOUSEHOLD AIR POLLUTION



0 20 40 60 80 100
# Publications

AIR POLLUTION

ENVIRONMENTAL KUZNETS CURVE

TROPICAL CYCLONES

THROUGHFALL

HOUSEHOLD AIR POLLUTION

AEROSOLS

ENVIRONMENTAL JUSTICE PCBS

IGANTHROPOCENE

RSDATA ENVELOPMENT ANALYSIS

WIND EROSION
FORMALDEHYDE

E-WASTE

FRACKING

DIMETHYLSULFONIOPROPIONATEELEVATED C02 ENSO

URBAN HEAT ISLAND

Figures 11 and 12: Top 8 Micro Citation Topics from Incites with all micro topics displayed in a cloud
powered by WordArt.com.

Macro-Topics Meso-Topics Micro-Topics # Pubs

3 AGRICULTURE,
ENVIRONMENT & ECOLOGY

3.45 SOIL SCIENCE

3.40.1598 FOREST FIRES

4

6 SOCIAL SCIENCES

6.115 SUSTAINABILITY SCIENCE

6.115.234 ENVIRONMENTAL KUZNETS CURVE

2

6.153 CLIMATE CHANGE

6.153.2168 ENVIRONMENTAL JUSTICE

2

8 EARTH SCIENCES

8.124 ENVIRONMENTAL SCIENCES

8.124.10 AEROSOLS

106

8.124.1775 FRACKING

3

8.124.2044 DIMETHYLSULF0NI0PR0PI0NATE

2

8.124.2192 HOUSEHOLD AIR POLLUTION

3

8.124.552 AIR POLLUTION

19

8.19 OCEANOGRAPHY, METEOROLOGY, &
ATMOSPHERIC SCIENCES

8.19.113 TROPICAL CYCLONES

4

8.19.743 URBAN HEAT ISLAND

5

Table 2. A table mapping macro-topics to their respective meso-topics and micro-topics as indexed in
InCites.

2 For more information about Citation Topics, visit:

https://incites.help.clarivate.com/Content/Research-Areas/citation-topics.htm

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