Class information for:
Level 1: LONG TERM TRENDS//IONOSPHERIC TRENDS//GEOMAGNETISM AND AERONOMY

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
18037 570 23.2 46%


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
19 4 ASTRONOMY & ASTROPHYSICS//ASTROPHYSICAL JOURNAL//ASTRON 523489
45 3       JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS//ASTRONOMY & ASTROPHYSICS//SOLAR PHYSICS 95613
828 2             MESOSPHERE//JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS//JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS 11850
18037 1                   LONG TERM TRENDS//IONOSPHERIC TRENDS//GEOMAGNETISM AND AERONOMY 570

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 LONG TERM TRENDS authKW 194947 5% 12% 31
2 IONOSPHERIC TRENDS authKW 171421 1% 80% 4
3 GEOMAGNETISM AND AERONOMY journal 168530 14% 4% 79
4 THERMOSPHERIC CIRCULATION authKW 142850 1% 67% 4
5 GEOMAGNETIZM I AERONOMIYA journal 124084 16% 3% 90
6 DRIVERS OF TRENDS authKW 107139 0% 100% 2
7 IONOSPHERE authKW 73717 11% 2% 65
8 PROPAGAT ATMOSPHER address 71425 0% 67% 2
9 FOF2 authKW 59645 1% 16% 7
10 THERMOSPHERE authKW 54390 3% 6% 16

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 Geochemistry & Geophysics 13668 43% 0% 245
2 Meteorology & Atmospheric Sciences 10919 39% 0% 222
3 Astronomy & Astrophysics 2693 29% 0% 166
4 Geosciences, Multidisciplinary 2468 25% 0% 141
5 Engineering, Aerospace 1155 7% 0% 40
6 Multidisciplinary Sciences 262 4% 0% 22
7 Oceanography 72 3% 0% 17
8 Water Resources 57 3% 0% 19
9 Remote Sensing 24 1% 0% 6
10 Engineering, Marine 4 0% 0% 1

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 PROPAGAT ATMOSPHER 71425 0% 67% 2
2 EARTH SYST SCI SUSTAINABIL 53570 0% 100% 1
3 ELECT ENGN METEOROL 53570 0% 100% 1
4 GU ARCTIC ANTARCTIC 53570 0% 100% 1
5 R SEC 53570 0% 100% 1
6 TER TRIAL MAGNET IONSPHERE RADIOWAVE PRO 53570 0% 100% 1
7 OBUKHOV ATMOSPHER PHYS 41923 3% 5% 17
8 TROMSO GEOPHYS OBSERV 29209 1% 9% 6
9 RADIAT AEROSOL BRANCH 26784 0% 50% 1
10 SOLAR PLANETARY ELE OMAGNETISM 26784 0% 50% 1

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 GEOMAGNETISM AND AERONOMY 168530 14% 4% 79
2 GEOMAGNETIZM I AERONOMIYA 124084 16% 3% 90
3 JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS 36761 7% 2% 38
4 INDIAN JOURNAL OF RADIO & SPACE PHYSICS 23791 3% 3% 15
5 JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS 13017 5% 1% 30
6 DOKLADI NA BOLGARSKATA AKADEMIYA NA NAUKITE 9152 4% 1% 23
7 ANNALES GEOPHYSICAE 8258 4% 1% 24
8 PHYSICS AND CHEMISTRY OF THE EARTH 6331 3% 1% 15
9 ADVANCES IN SPACE RESEARCH-SERIES 5246 3% 1% 19
10 JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 5245 8% 0% 44

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 LONG TERM TRENDS 194947 5% 12% 31 Search LONG+TERM+TRENDS Search LONG+TERM+TRENDS
2 IONOSPHERIC TRENDS 171421 1% 80% 4 Search IONOSPHERIC+TRENDS Search IONOSPHERIC+TRENDS
3 THERMOSPHERIC CIRCULATION 142850 1% 67% 4 Search THERMOSPHERIC+CIRCULATION Search THERMOSPHERIC+CIRCULATION
4 DRIVERS OF TRENDS 107139 0% 100% 2 Search DRIVERS+OF+TRENDS Search DRIVERS+OF+TRENDS
5 IONOSPHERE 73717 11% 2% 65 Search IONOSPHERE Search IONOSPHERE
6 FOF2 59645 1% 16% 7 Search FOF2 Search FOF2
7 THERMOSPHERE 54390 3% 6% 16 Search THERMOSPHERE Search THERMOSPHERE
8 ATMOSPHERIC SODIUM LAYER 53570 0% 100% 1 Search ATMOSPHERIC+SODIUM+LAYER Search ATMOSPHERIC+SODIUM+LAYER
9 BOTTOMSIDE THICKNESS OF THE F2 LAYER 53570 0% 100% 1 Search BOTTOMSIDE+THICKNESS+OF+THE+F2+LAYER Search BOTTOMSIDE+THICKNESS+OF+THE+F2+LAYER
10 CMAT2 53570 0% 100% 1 Search CMAT2 Search CMAT2

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.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 LASTOVICKA, J , SOLOMON, SC , QIAN, LY , (2012) TRENDS IN THE NEUTRAL AND IONIZED UPPER ATMOSPHERE.SPACE SCIENCE REVIEWS. VOL. 168. ISSUE 1-4. P. 113 -145 72 58% 22
2 DANILOV, AD , (2012) LONG-TERM TRENDS IN THE UPPER ATMOSPHERE AND IONOSPHERE (A REVIEW).GEOMAGNETISM AND AERONOMY. VOL. 52. ISSUE 3. P. 271-291 54 78% 5
3 LASTOVICKA, J , MIKHAILOV, AV , ULICH, T , BREMER, J , ELIAS, AG , DE ADLER, NO , JARA, V , DEL RIO, RA , FOPPIANO, AJ , OVALLE, E , ET AL (2006) LONG-TERM TRENDS IN FOF2: A COMPARISON OF VARIOUS METHODS.JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS. VOL. 68. ISSUE 17. P. 1854 -1870 35 92% 39
4 QIAN, LY , LASTOVICKA, J , ROBLE, RG , SOLOMON, SC , (2011) PROGRESS IN OBSERVATIONS AND SIMULATIONS OF GLOBAL CHANGE IN THE UPPER ATMOSPHERE.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS. VOL. 116. ISSUE . P. - 46 53% 33
5 SHARMA, S , CHANDRA, H , BEIG, G , (2015) LONG TERM CHANGES IN THE IONOSPHERE OVER INDIAN LOW LATITUDES: IMPACT OF GREENHOUSE GASES.JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS. VOL. 128. ISSUE . P. 24 -32 32 74% 0
6 YUE, XN , WAN, WX , LIU, LB , NING, BQ , ZHAO, BQ , (2006) APPLYING ARTIFICIAL NEURAL NETWORK TO DERIVE LONG-TERM FOF2 TRENDS IN THE ASIA/PACIFIC SECTOR FROM IONOSONDE OBSERVATIONS.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS. VOL. 111. ISSUE A10. P. - 40 71% 17
7 XU, ZW , WU, J , IGARASHI, K , KATO, H , WU, ZS , (2004) LONG-TERM IONOSPHERIC TRENDS BASED ON GROUND-BASED IONOSONDE OBSERVATIONS AT KOKUBUNJI, JAPAN.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS. VOL. 109. ISSUE A9. P. - 33 89% 16
8 BREMER, J , DAMBOLDT, T , MIELICH, J , SUESSMANN, P , (2012) COMPARING LONG-TERM TRENDS IN THE IONOSPHERIC F2-REGION WITH TWO DIFFERENT METHODS.JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS. VOL. 77. ISSUE . P. 174 -185 28 80% 18
9 DANILOV, A , (2015) SEASONAL AND DIURNAL VARIATIONS IN F(O)F(2) TRENDS.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS. VOL. 120. ISSUE 5. P. 3868 -3882 25 78% 5
10 PERRONE, L , MIKHAILOV, AV , (2016) GEOMAGNETIC CONTROL OF THE MIDLATITUDE F(O)F(1) AND F(O)F(2) LONG-TERM VARIATIONS: RECENT OBSERVATIONS IN EUROPE.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS. VOL. 121. ISSUE 7. P. 7183 -7192 25 74% 1

Classes with closest relation at Level 1


Rank Class id link
1 30824 IZVESTIYA AKADEMII NAUK SSSR FIZIKA ATMOSFERY I OKEANA//OBERVAC TIERRA TELEDETECC ATMOSFERA//GRAVITY WAVE ENERGY
2 7406 AIRGLOW//AIRGLOW AND AURORA//HYDROXYL AIRGLOW
3 15124 NON LTE//VSBY//SNOE
4 8399 NOCTILUCENT CLOUDS//POLAR MESOSPHERIC CLOUDS//PMSE
5 11881 IONIZATION MODEL//ATMOSPHERIC IONIZATION//IMAGING RIOMETER
6 2215 MIDDLE ATMOSPHERE DYNAMICS//WAVES AND TIDES//PLANETARY WAVES
7 174 IONOSPHERE//TOTAL ELECTRON CONTENT//IONOSPHERIC STORM
8 17803 POLAR PATROL BALLOON//PROTON AFFINITY G2 CALCULATION//HIGH PRESSURE MASS SPECTROMETER
9 14889 SODIUM LAYER//SPORADIC SODIUM LAYERS//MESOSPHERIC METAL
10 32043 GEOMAGNETISM AND AERONOMY//PUSHKOV TERR MAGNETISM IONOSPHERE RADIOWAV//ATMOSPHERIC AND OCEAN PARAMETERS

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