Class information for:
Level 1: SUNSPOT NUMBER//SOLAR PHYSICS//SOLAR ACTIVITY

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
7031 1414 29.1 48%


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
53 2             SOLAR PHYSICS//SUN CORONA//SUN MAGNETIC FIELDS 29887
7031 1                   SUNSPOT NUMBER//SOLAR PHYSICS//SOLAR ACTIVITY 1414

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 SUNSPOT NUMBER authKW 246999 2% 37% 31
2 SOLAR PHYSICS journal 246103 20% 4% 281
3 SOLAR ACTIVITY authKW 245077 7% 12% 94
4 CARRINGTON EVENT authKW 242918 1% 75% 15
5 SUNSPOTS authKW 234971 9% 9% 123
6 OULU UNIT address 159857 3% 21% 36
7 SODANKYLA GEOPHYS OBSERV address 147597 3% 15% 47
8 SUNSPOTS STATISTICS authKW 145927 1% 48% 14
9 UK SOLAR SYST DATA address 132258 0% 88% 7
10 SOLAR CYCLE authKW 127602 4% 11% 53

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 Astronomy & Astrophysics 39004 68% 0% 963
2 Meteorology & Atmospheric Sciences 5911 19% 0% 263
3 Geochemistry & Geophysics 5006 17% 0% 240
4 Geosciences, Multidisciplinary 4329 21% 0% 297
5 Engineering, Aerospace 421 3% 0% 40
6 History & Philosophy of Science 63 1% 0% 12
7 Physics, Multidisciplinary 14 3% 0% 47
8 Remote Sensing 2 0% 0% 5
9 Multidisciplinary Sciences 1 0% 0% 6
10 Education, Scientific Disciplines 1 0% 0% 5

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 OULU UNIT 159857 3% 21% 36
2 SODANKYLA GEOPHYS OBSERV 147597 3% 15% 47
3 UK SOLAR SYST DATA 132258 0% 88% 7
4 UNIV INVEST AGUA CAMBIO CLIMAT SOSTENIBILI 106300 1% 62% 8
5 OLVE EXCELLENCE 70517 1% 23% 14
6 DATING 14C 49070 0% 45% 5
7 GEOMAGNETISM PROGRAM 47643 1% 28% 8
8 OLVE EXCELLENCE SODANKYLA GEOPHYS OBSERV 43187 0% 100% 2
9 SPACE PHYS OPERAT 43187 0% 100% 2
10 WORLD DATA SILSO 43187 0% 100% 2

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 SOLAR PHYSICS 246103 20% 4% 281
2 GEOMAGNETISM AND AERONOMY 35286 4% 3% 57
3 BULLETIN OF THE ASTRONOMICAL INSTITUTES OF CZECHOSLOVAKIA 24761 2% 5% 25
4 JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 18506 9% 1% 130
5 HISTORY OF GEO- AND SPACE SCIENCES 17657 0% 14% 6
6 JOURNAL OF SPACE WEATHER AND SPACE CLIMATE 12250 1% 6% 10
7 JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS 11252 3% 1% 44
8 ANNALES GEOPHYSICAE 11166 3% 1% 44
9 SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS 9016 1% 3% 16
10 ANNALES GEOPHYSICAE-ATMOSPHERES HYDROSPHERES AND SPACE SCIENCES 8152 2% 2% 24

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 SUNSPOT NUMBER 246999 2% 37% 31 Search SUNSPOT+NUMBER Search SUNSPOT+NUMBER
2 SOLAR ACTIVITY 245077 7% 12% 94 Search SOLAR+ACTIVITY Search SOLAR+ACTIVITY
3 CARRINGTON EVENT 242918 1% 75% 15 Search CARRINGTON+EVENT Search CARRINGTON+EVENT
4 SUNSPOTS 234971 9% 9% 123 Search SUNSPOTS Search SUNSPOTS
5 SUNSPOTS STATISTICS 145927 1% 48% 14 Search SUNSPOTS+STATISTICS Search SUNSPOTS+STATISTICS
6 SOLAR CYCLE 127602 4% 11% 53 Search SOLAR+CYCLE Search SOLAR+CYCLE
7 SUN ACTIVITY 125559 9% 5% 122 Search SUN+ACTIVITY Search SUN+ACTIVITY
8 GEOMAGNETIC INDICES 120906 1% 40% 14 Search GEOMAGNETIC+INDICES Search GEOMAGNETIC+INDICES
9 GREENWICH PHOTO HELIOGRAPHIC RESULTS 107967 0% 100% 5 Search GREENWICH+PHOTO+HELIOGRAPHIC+RESULTS Search GREENWICH+PHOTO+HELIOGRAPHIC+RESULTS
10 MAUNDER MINIMUM 101352 1% 36% 13 Search MAUNDER+MINIMUM Search MAUNDER+MINIMUM

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 USOSKIN, IG , (2013) A HISTORY OF SOLAR ACTIVITY OVER MILLENNIA.LIVING REVIEWS IN SOLAR PHYSICS. VOL. 10. ISSUE 1. P. - 143 46% 103
2 VAZQUEZ, M , VAQUERO, JM , GALLEGO, MC , CORTES, TR , PALLE, PL , (2016) LONG-TERM TRENDS AND GLEISSBERG CYCLES IN AURORA BOREALIS RECORDS (1600-AEURO PARTS PER THOUSAND 2015).SOLAR PHYSICS. VOL. 291. ISSUE 2. P. 613 -642 84 63% 2
3 CLETTE, F , SVALGAARD, L , VAQUERO, JM , CLIVER, EW , (2014) REVISITING THE SUNSPOT NUMBER A 400-YEAR PERSPECTIVE ON THE SOLAR CYCLE.SPACE SCIENCE REVIEWS. VOL. 186. ISSUE 1-4. P. 35 -103 56 69% 74
4 USOSKIN, IG , ARLT, R , ASVESTARI, E , HAWKINS, E , KAPYLA, M , KOVALTSOV, GA , KRIVOVA, N , LOCKWOOD, M , MURSULA, K , O'REILLY, J , ET AL (2015) THE MAUNDER MINIMUM (1645-1715) WAS INDEED A GRAND MINIMUM: A REASSESSMENT OF MULTIPLE DATASETS.ASTRONOMY & ASTROPHYSICS. VOL. 581. ISSUE . P. - 72 55% 23
5 USOSKIN, IG , (2008) A HISTORY OF SOLAR ACTIVITY OVER MILLENNIA.LIVING REVIEWS IN SOLAR PHYSICS. VOL. 5. ISSUE 3. P. - 118 46% 70
6 PESNELL, WD , (2012) SOLAR CYCLE PREDICTIONS (INVITED REVIEW).SOLAR PHYSICS. VOL. 281. ISSUE 1. P. 507 -532 53 76% 42
7 PETROVAY, K , (2010) SOLAR CYCLE PREDICTION.LIVING REVIEWS IN SOLAR PHYSICS. VOL. 7. ISSUE 6. P. - 77 51% 46
8 PISHKALO, MI , (2014) PREDICTION OF SOLAR CYCLE 24 USING SUNSPOT NUMBER NEAR THE CYCLE MINIMUM.SOLAR PHYSICS. VOL. 289. ISSUE 5. P. 1815-1829 42 93% 2
9 NEUHAUSER, R , NEUHAUSER, DL , (2015) VARIATIONS OF C-14 AROUND AD 775 AND AD 1795-DUE TO SOLAR ACTIVITY.ASTRONOMISCHE NACHRICHTEN. VOL. 336. ISSUE 10. P. 930 -954 56 67% 1
10 VAQUERO, JM , (2007) HISTORICAL SUNSPOT OBSERVATIONS: A REVIEW.ADVANCES IN SPACE RESEARCH. VOL. 40. ISSUE 7. P. 929 -941 47 89% 47

Classes with closest relation at Level 1


Rank Class id link
1 1102 SUN ROTATION//SUN INTERIOR//SUN ACTIVITY
2 7002 ATMOSPHERIC ELECTRICITY//GLOBAL ELECTRIC CIRCUIT//SOLAR ACTIVITY
3 7054 SAN FERNANDO OBSERV//SUN FACULAE PLAGES//SOLAR PHYSICS
4 6191 COSMIC RAYS//FORBUSH DECREASE//UNIT SPACE PHYS
5 17586 DST PREDICTION//FMI METHOD//SARISSA TECHNOL
6 10912 BE 7//BERYLLIUM 7//PB 210
7 37178 CCD PHOTOMETRY//SOLAR RADIO NOISE//AIR WEATHER SERV
8 19870 GEOMAGNETICALLY INDUCED CURRENTS//GEOMAGNETICALLY INDUCED CURRENTS GIC//GEOMAGNETICALLY INDUCED CURRENT GIC
9 24833 SINGULAR SPECTRUM ANALYSIS//WINDOW LENGTH//LINEAR RECURRENT FORMULA
10 8922 RADIOCARBON//RADIOCARBON DATING//OXFORD RADIOCARBON ACCELERATOR UNIT

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