Class information for:
Level 2: ISOPRENE//BIOGENIC EMISSIONS//VOLATILE ORGANIC COMPOUNDS

Basic class information
Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
3 4 GEOSCIENCES, MULTIDISCIPLINARY//GEOCHEMISTRY & GEOPHYSICS//METEOROLOGY & ATMOSPHERIC SCIENCES 1953906
16 3       METEOROLOGY & ATMOSPHERIC SCIENCES//ATMOSPHERIC ENVIRONMENT//JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126179
1575 2             ISOPRENE//BIOGENIC EMISSIONS//VOLATILE ORGANIC COMPOUNDS 7519
2386 1                   OZONE FORMATION POTENTIAL//NON METHANE HYDROCARBONS//VOLATILE ORGANIC COMPOUNDS 2297
3292 1                   ISOPRENE//BIOGENIC EMISSIONS//BVOC 2051
5676 1                   FORMALDEHYDE//2 4 DINITROPHENYLHYDRAZINE//FORMALDEHYDE DETERMINATION 1619
13132 1                   AMERICAN INDUSTRIAL HYGIENE ASSOCIATION JOURNAL//GASEOUS STANDARD MIXTURES//PERMEATION TUBE 889
20150 1                   PASSIVE SAMPLER//DIFFUSION TUBES//TAPE MONITOR 495
31349 1                   OZONE SENSOR//OZONE DETECTION//O 3 GAS SENSOR 168

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ISOPRENE authKW 603771 4% 43% 333
2 BIOGENIC EMISSIONS authKW 308260 2% 63% 117
3 VOLATILE ORGANIC COMPOUNDS authKW 270205 6% 13% 487
4 BVOC authKW 205281 1% 88% 56
5 FORMALDEHYDE authKW 203447 6% 11% 425
6 ATMOSPHERIC ENVIRONMENT journal 198185 12% 5% 906
7 BIOGENIC VOLATILE ORGANIC COMPOUNDS authKW 197931 1% 75% 63
8 NON METHANE HYDROCARBONS authKW 197531 1% 65% 73
9 ISOPRENE EMISSION authKW 175497 1% 87% 48
10 PTR MS authKW 171842 1% 42% 98

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Meteorology & Atmospheric Sciences 71598 28% 1% 2078
2 Environmental Sciences 58534 43% 0% 3236
3 Chemistry, Analytical 25026 26% 0% 1919
4 Engineering, Environmental 6478 8% 0% 598
5 Biochemical Research Methods 1915 6% 0% 467
6 Public, Environmental & Occupational Health 695 5% 0% 404
7 Instruments & Instrumentation 448 3% 0% 249
8 Plant Sciences 400 5% 0% 365
9 Spectroscopy 337 3% 0% 188
10 Toxicology 165 2% 0% 167

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 STATE JOINT ENVIRONM SIMULAT POLLUT CON 83802 1% 49% 41
2 IST INQUINAMENTO ATMOSFER 62820 1% 34% 44
3 ATMOSPHER CHEM 58363 3% 7% 190
4 IONENPHYS ANGEW PHYS 42299 1% 17% 59
5 IONENPHYS 33062 1% 15% 53
6 GRP RECH ENVIRONM CHIM PL 29921 0% 71% 10
7 CHIM ENERGIE ENVIRONM 29792 0% 89% 8
8 IST BIOL AGROAMBIENTALE FO TALE 29575 0% 21% 33
9 BIOL AGR FOOD SCI 25460 0% 41% 15
10 GRP ENVIRONM ORGAN CHEM TECHNOL 24401 0% 45% 13

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ATMOSPHERIC ENVIRONMENT 198185 12% 5% 906
2 AMERICAN INDUSTRIAL HYGIENE ASSOCIATION JOURNAL 77166 3% 9% 209
3 ATMOSPHERIC CHEMISTRY AND PHYSICS 33579 3% 3% 261
4 JOURNAL OF ATMOSPHERIC CHEMISTRY 24619 1% 7% 89
5 JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION 23121 2% 4% 140
6 JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 15115 4% 1% 284
7 JOURNAL OF ENVIRONMENTAL MONITORING 14988 1% 4% 96
8 AIR QUALITY ATMOSPHERE AND HEALTH 10550 0% 8% 33
9 ENVIRONMENTAL SCIENCE & TECHNOLOGY 8787 3% 1% 252
10 ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS 8777 1% 4% 49

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 ISOPRENE 603771 4% 43% 333 Search ISOPRENE Search ISOPRENE
2 BIOGENIC EMISSIONS 308260 2% 63% 117 Search BIOGENIC+EMISSIONS Search BIOGENIC+EMISSIONS
3 VOLATILE ORGANIC COMPOUNDS 270205 6% 13% 487 Search VOLATILE+ORGANIC+COMPOUNDS Search VOLATILE+ORGANIC+COMPOUNDS
4 BVOC 205281 1% 88% 56 Search BVOC Search BVOC
5 FORMALDEHYDE 203447 6% 11% 425 Search FORMALDEHYDE Search FORMALDEHYDE
6 BIOGENIC VOLATILE ORGANIC COMPOUNDS 197931 1% 75% 63 Search BIOGENIC+VOLATILE+ORGANIC+COMPOUNDS Search BIOGENIC+VOLATILE+ORGANIC+COMPOUNDS
7 NON METHANE HYDROCARBONS 197531 1% 65% 73 Search NON+METHANE+HYDROCARBONS Search NON+METHANE+HYDROCARBONS
8 ISOPRENE EMISSION 175497 1% 87% 48 Search ISOPRENE+EMISSION Search ISOPRENE+EMISSION
9 PTR MS 171842 1% 42% 98 Search PTR+MS Search PTR+MS
10 MONOTERPENES 152333 3% 15% 244 Search MONOTERPENES Search MONOTERPENES

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 2


rank cluster_id2 link
1 3450 FORMALDEHYDE//BIOARENA//ENDOGENOUS FORMALDEHYDE
2 2790 JOURNAL OF HIGH RESOLUTION CHROMATOGRAPHY & CHROMATOGRAPHY COMMUNICATIONS//RESIDUAL SOLVENTS//HRC-JOURNAL OF HIGH RESOLUTION CHROMATOGRAPHY
3 988 ATMOSPHERIC ENVIRONMENT//STREET CANYON//AIR QUALITY MODELING
4 439 AIR POLLUTION//PARTICULATE MATTER//PM25
5 84 METEOROLOGY & ATMOSPHERIC SCIENCES//ATMOSPHERIC ENVIRONMENT//ATMOSPHERIC CHEMISTRY AND PHYSICS
6 3955 PRIMARY AROMATIC AMINES//ALIPHATIC AMINES//SHORT CHAIN ALIPHATIC AMINES
7 64 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL//INTERNATIONAL JOURNAL OF CHEMICAL KINETICS//JOURNAL OF PHYSICAL CHEMISTRY A
8 1815 EXHALED BREATH CONDENSATE//JOURNAL OF BREATH RESEARCH//EXHALED NITRIC OXIDE
9 268 JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES//METEOROLOGY & ATMOSPHERIC SCIENCES//ATMOSPHERIC CHEMISTRY AND PHYSICS
10 1353 COMPREHENSIVE TWO DIMENSIONAL GAS CHROMATOGRAPHY//GC X GC//GAS CHROMATOGRAPHY

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