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Dashboard Data for SOI Graph

Global Climate Dashboard Data

Data ID
data-soi
Data
195101,1.700
195102,0.600
195103,-0.800
195104,-0.600
195105,-1.000
195106,-0.300
195107,-1.400
195108,-0.700
195109,-1.300
195110,-1.400
195111,-1.000
195112,-1.000
195201,-1.200
195202,-1.100
195203,0.000
195204,-0.500
195205,0.600
195206,0.500
195207,0.400
195208,-0.400
195209,-0.300
195210,0.200
195211,-0.200
195212,-1.600
195301,0.200
195302,-1.000
195303,-0.800
195304,-0.100
195305,-2.200
195306,-0.300
195307,-0.100
195308,-1.900
195309,-1.500
195310,-0.200
195311,-0.400
195312,-0.700
195401,0.600
195402,-0.700
195403,-0.300
195404,0.400
195405,0.300
195406,-0.300
195407,0.300
195408,0.800
195409,0.200
195410,0.100
195411,0.100
195412,1.500
195501,-0.700
195502,1.800
195503,0.100
195504,-0.500
195505,0.900
195506,1.100
195507,1.700
195508,1.200
195509,1.500
195510,1.500
195511,1.300
195512,1.000
195601,1.400
195602,1.500
195603,0.900
195604,0.700
195605,1.300
195606,0.800
195607,1.100
195608,0.900
195609,0.000
195610,1.900
195611,0.100
195612,1.000
195701,0.600
195702,-0.500
195703,-0.400
195704,0.000
195705,-1.000
195706,-0.200
195707,0.100
195708,-1.000
195709,-1.100
195710,-0.200
195711,-1.200
195712,-0.500
195801,-2.300
195802,-1.000
195803,-0.300
195804,0.100
195805,-0.900
195806,-0.200
195807,0.300
195808,0.600
195809,-0.400
195810,-0.200
195811,-0.600
195812,-0.900
195901,-1.200
195902,-2.000
195903,0.900
195904,0.200
195905,0.300
195906,-0.600
195907,-0.500
195908,-0.600
195909,0.000
195910,0.300
195911,1.000
195912,0.800
196001,0.000
196002,-0.300
196003,0.600
196004,0.600
196005,0.300
196006,-0.300
196007,0.400
196008,0.500
196009,0.700
196010,-0.100
196011,0.500
196012,0.800
196101,-0.400
196102,0.700
196103,-2.700
196104,0.700
196105,0.100
196106,-0.300
196107,0.100
196108,-0.200
196109,0.100
196110,-0.700
196111,0.600
196112,1.600
196201,2.200
196202,-0.700
196203,-0.400
196204,0.000
196205,1.000
196206,0.400
196207,-0.100
196208,0.300
196209,0.500
196210,0.900
196211,0.300
196212,0.000
196301,1.100
196302,0.400
196303,0.700
196304,0.600
196305,0.100
196306,-1.000
196307,-0.300
196308,-0.500
196309,-0.700
196310,-1.600
196311,-1.000
196312,-1.600
196401,-0.500
196402,-0.300
196403,0.700
196404,1.000
196405,-0.100
196406,0.400
196407,0.400
196408,1.300
196409,1.400
196410,1.300
196411,0.000
196412,-0.500
196501,-0.600
196502,0.100
196503,0.200
196504,-0.800
196505,-0.100
196506,-1.000
196507,-2.200
196508,-1.200
196509,-1.500
196510,-1.200
196511,-1.800
196512,0.000
196601,-1.700
196602,-0.700
196603,-1.700
196604,-0.500
196605,-0.700
196606,0.000
196607,-0.100
196608,0.300
196609,-0.300
196610,-0.400
196611,-0.100
196612,-0.600
196701,1.900
196702,1.600
196703,0.800
196704,-0.300
196705,-0.300
196706,0.300
196707,0.000
196708,0.500
196709,0.600
196710,-0.200
196711,-0.600
196712,-0.800
196801,0.400
196802,1.100
196803,-0.500
196804,-0.200
196805,1.100
196806,0.900
196807,0.600
196808,-0.100
196809,-0.300
196810,-0.300
196811,-0.500
196812,0.000
196901,-2.000
196902,-1.100
196903,-0.100
196904,-0.600
196905,-0.600
196906,-0.200
196907,-0.700
196908,-0.600
196909,-1.200
196910,-1.300
196911,-0.200
196912,0.300
197001,-1.400
197002,-1.600
197003,0.000
197004,-0.400
197005,0.100
197006,0.700
197007,-0.600
197008,0.200
197009,1.300
197010,0.900
197011,1.700
197012,2.100
197101,0.300
197102,1.900
197103,2.100
197104,1.700
197105,0.700
197106,0.100
197107,0.100
197108,1.300
197109,1.600
197110,1.700
197111,0.500
197112,0.000
197201,0.400
197202,0.800
197203,0.100
197204,-0.400
197205,-2.100
197206,-1.100
197207,-1.900
197208,-1.000
197209,-1.600
197210,-1.200
197211,-0.500
197212,-1.600
197301,-0.500
197302,-2.000
197303,0.200
197304,-0.200
197305,0.200
197306,0.800
197307,0.500
197308,1.100
197309,1.400
197310,0.600
197311,2.900
197312,2.000
197401,2.700
197402,2.000
197403,2.200
197404,0.800
197405,0.900
197406,0.100
197407,1.200
197408,0.500
197409,1.300
197410,0.800
197411,-0.300
197412,0.000
197501,-0.800
197502,0.600
197503,1.200
197504,1.100
197505,0.500
197506,1.100
197507,2.100
197508,1.900
197509,2.400
197510,1.700
197511,1.300
197512,2.300
197601,1.500
197602,1.600
197603,1.300
197604,0.100
197605,0.200
197606,-0.100
197607,-1.200
197608,-1.300
197609,-1.400
197610,0.200
197611,0.700
197612,-0.600
197701,-0.700
197702,1.100
197703,-1.300
197704,-0.800
197705,-0.900
197706,-1.500
197707,-1.500
197708,-1.300
197709,-1.000
197710,-1.400
197711,-1.600
197712,-1.400
197801,-0.400
197802,-3.500
197803,-0.800
197804,-0.600
197805,1.300
197806,0.300
197807,0.400
197808,0.000
197809,0.000
197810,-0.700
197811,-0.100
197812,-0.300
197901,-0.700
197902,0.800
197903,-0.500
197904,-0.400
197905,0.300
197906,0.400
197907,1.300
197908,-0.600
197909,0.100
197910,-0.400
197911,-0.600
197912,-1.000
198001,0.300
198002,0.000
198003,-1.200
198004,-1.000
198005,-0.300
198006,-0.400
198007,-0.200
198008,0.000
198009,-0.600
198010,-0.300
198011,-0.500
198012,-0.300
198101,0.200
198102,-0.600
198103,-2.100
198104,-0.400
198105,0.700
198106,1.000
198107,0.800
198108,0.400
198109,0.400
198110,-0.700
198111,0.100
198112,0.500
198201,1.300
198202,-0.100
198203,0.100
198204,-0.200
198205,-0.700
198206,-1.600
198207,-1.900
198208,-2.500
198209,-2.000
198210,-2.200
198211,-3.200
198212,-2.800
198301,-4.200
198302,-4.600
198303,-3.400
198304,-1.300
198305,0.500
198306,-0.300
198307,-0.800
198308,-0.200
198309,1.000
198310,0.300
198311,-0.200
198312,-0.100
198401,0.100
198402,0.600
198403,-0.900
198404,0.200
198405,0.000
198406,-0.800
198407,0.000
198408,0.000
198409,0.100
198410,-0.600
198411,0.200
198412,-0.400
198501,-0.500
198502,1.000
198503,0.200
198504,1.000
198505,0.200
198506,-0.900
198507,-0.300
198508,0.700
198509,0.000
198510,-0.700
198511,-0.300
198512,0.100
198601,0.900
198602,-1.600
198603,0.000
198604,0.100
198605,-0.500
198606,0.700
198607,0.100
198608,-1.000
198609,-0.600
198610,0.500
198611,-1.500
198612,-1.800
198701,-0.900
198702,-1.900
198703,-2.000
198704,-1.900
198705,-1.700
198706,-1.700
198707,-1.700
198708,-1.500
198709,-1.200
198710,-0.700
198711,-0.100
198712,-0.700
198801,-0.200
198802,-0.900
198803,0.100
198804,-0.100
198805,0.800
198806,-0.200
198807,1.100
198808,1.400
198809,2.100
198810,1.400
198811,1.900
198812,1.300
198901,1.700
198902,1.100
198903,0.600
198904,1.600
198905,1.200
198906,0.500
198907,0.800
198908,-0.800
198909,0.600
198910,0.600
198911,-0.400
198912,-0.700
199001,-0.200
199002,-2.400
199003,-1.200
199004,0.000
199005,1.100
199006,0.000
199007,0.500
199008,-0.600
199009,-0.800
199010,0.100
199011,-0.700
199012,-0.500
199101,0.600
199102,-0.100
199103,-1.400
199104,-1.000
199105,-1.500
199106,-0.500
199107,-0.200
199108,-0.900
199109,-1.800
199110,-1.500
199111,-0.800
199112,-2.300
199201,-3.400
199202,-1.400
199203,-3.000
199204,-1.400
199205,0.000
199206,-1.200
199207,-0.800
199208,0.000
199209,0.000
199210,-1.900
199211,-0.900
199212,-0.900
199301,-1.200
199302,-1.300
199303,-1.100
199304,-1.600
199305,-0.600
199306,-1.400
199307,-1.100
199308,-1.500
199309,-0.800
199310,-1.500
199311,-0.200
199312,0.000
199401,-0.300
199402,-0.100
199403,-1.400
199404,-1.800
199405,-1.000
199406,-0.900
199407,-1.800
199408,-1.800
199409,-1.800
199410,-1.600
199411,-0.700
199412,-1.600
199501,-0.600
199502,-0.500
199503,0.200
199504,-1.100
199505,-0.700
199506,-0.200
199507,0.300
199508,-0.100
199509,0.300
199510,-0.300
199511,0.000
199512,-0.800
199601,1.000
199602,-0.100
199603,0.700
199604,0.600
199605,0.100
199606,1.000
199607,0.600
199608,0.400
199609,0.600
199610,0.400
199611,-0.200
199612,0.800
199701,0.500
199702,1.600
199703,-1.100
199704,-0.900
199705,-1.800
199706,-2.000
199707,-1.000
199708,-2.100
199709,-1.600
199710,-1.900
199711,-1.400
199712,-1.300
199801,-3.300
199802,-2.700
199803,-3.500
199804,-1.900
199805,0.100
199806,0.700
199807,1.300
199808,1.000
199809,1.200
199810,1.000
199811,1.100
199812,1.400
199901,2.000
199902,0.800
199903,0.900
199904,1.400
199905,0.100
199906,-0.100
199907,0.500
199908,0.100
199909,-0.100
199910,0.900
199911,1.100
199912,1.500
200001,0.700
200002,1.600
200003,1.000
200004,1.200
200005,0.200
200006,-0.600
200007,-0.400
200008,0.400
200009,1.000
200010,1.000
200011,2.000
200012,0.700
200101,1.100
200102,1.500
200103,0.500
200104,-0.100
200105,-0.800
200106,-0.100
200107,-0.400
200108,-1.000
200109,0.200
200110,-0.400
200111,0.700
200112,-1.200
200201,0.400
200202,0.900
200203,-0.900
200204,-0.400
200205,-1.200
200206,-0.700
200207,-0.700
200208,-1.600
200209,-0.700
200210,-0.700
200211,-0.600
200212,-1.400
200301,-0.400
200302,-1.200
200303,-1.000
200304,-0.400
200305,-0.600
200306,-1.100
200307,0.200
200308,-0.300
200309,-0.100
200310,-0.300
200311,-0.400
200312,1.100
200401,-1.700
200402,1.100
200403,-0.200
200404,-1.300
200405,0.900
200406,-1.300
200407,-0.700
200408,-0.800
200409,-0.400
200410,-0.300
200411,-0.900
200412,-1.100
200501,0.300
200502,-4.100
200503,-0.200
200504,-1.000
200505,-1.200
200506,0.100
200507,0.000
200508,-0.800
200509,0.400
200510,1.100
200511,-0.300
200512,-0.200
200601,1.800
200602,-0.200
200603,1.400
200604,0.900
200605,-0.800
200606,-0.700
200607,-0.800
200608,-1.600
200609,-0.700
200610,-1.700
200611,0.100
200612,-0.500
200701,-1.100
200702,-0.500
200703,-0.400
200704,-0.400
200705,-0.400
200706,0.200
200707,-0.500
200708,0.100
200709,0.200
200710,0.600
200711,0.900
200712,1.800
200801,1.900
200802,2.700
200803,1.100
200804,0.600
200805,-0.300
200806,0.300
200807,0.200
200808,0.800
200809,1.500
200810,1.300
200811,1.500
200812,1.500
200901,1.200
200902,1.800
200903,-0.100
200904,0.700
200905,-0.400
200906,-0.300
200907,0.100
200908,-0.700
200909,0.300
200910,-1.700
200911,-0.800
200912,-1.000
201001,-1.500
201002,-2.100
201003,-1.400
201004,1.200
201005,0.800
201006,0.100
201007,2.000
201008,1.700
201009,2.600
201010,1.800
201011,1.500
201012,3.200
201101,2.300
201102,2.700
201103,2.500
201104,1.900
201105,0.400
201106,0.200
201107,1.000
201108,0.400
201109,1.000
201110,0.800
201111,1.100
201112,2.500
201201,1.100
201202,0.500
201203,0.700
201204,-0.300
201205,0.000
201206,-0.400
201207,0.000
201208,-0.200
201209,0.200
201210,0.300
201211,0.300
201212,-0.600
201301,-0.100
201302,-0.200
201303,1.500
201304,0.200
201305,0.800
201306,1.200
201307,0.800
201308,0.200
201309,0.300
201310,-0.100
201311,0.700
201312,0.100
201401,1.400
201402,0.100
201403,-0.900
201404,0.800
201405,0.500
201406,0.200
201407,-0.200
201408,-0.700
201409,-0.700
201410,-0.600
201411,-0.900
201412,-0.600
201501,-0.800
201502,0.200
201503,-0.700
201504,0.000
201505,-0.700
201506,-0.600
201507,-1.100
201508,-1.400
201509,-1.600
201510,-1.700
201511,-0.500
201512,-0.600
201601,-2.200
201602,-2.000
201603,-0.100
201604,-1.200
201605,0.400
201606,0.600
201607,0.400
201608,0.700
201609,1.200
201610,-0.300
201611,-0.100
201612,0.300
201701,0.200
201702,-0.100
201703,0.900
201704,-0.200
201705,0.300
201706,-0.400
201707,0.800
201708,0.500
201709,0.600
201710,0.900
201711,0.900
201712,-0.100
201801,1.100
201802,-0.500
201803,1.500
201804,0.500
201805,0.400
201806,-0.100
201807,0.200
201808,-0.300
201809,-0.900
201810,0.400
201811,-0.100
201812,1.000
201901,0.000
201902,-1.400
201903,-0.300
201904,0.100
201905,-0.400
201906,-0.500
201907,-0.400
201908,-0.100
201909,-1.200
201910,-0.400
201911,-0.800
201912,-0.600
202001,0.200
202002,-0.100
202003,-0.100
202004,0.200
202005,0.400
202006,-0.400
202007,0.400
202008,1.100
202009,0.900
202010,0.500
202011,0.700
202012,1.800
202101,1.900
Map Display (small)
Maps of pressure patterns in Pacific during positive and negative SOI
Display Title
Southern Oscillation Index
Graph Summary

Monthly departures from average surface pressure (1981-2010) in Darwin, Australia, relative to average departures in Tahiti. Positive values indicate a strong Walker Circulation, which occurs during La Niña. Negative values indicate a weak or disrupted Walker Circulation, which occurs during El Niño. Data from NOAA CPC.

Image Summary

Sea level pressure patterns during winters when the Southern Oscillation Index was positive (top) or negative (bottom). During La Niña (positive SOI), the pressure is higher than average (red) over the central Pacific, and lower than average (gray) over Australia. During El Niño, the SOI is negative, and the anomalies are reversed. Data from NOAA PSL.

Teaser Summary

The SOI tracks the disruptions to the normal air pressure and wind across the tropical Pacific Ocean that indicate El Niño and La Niña.

Climate Dashboard Indicator Type
Graph Display (large)
Graph of SOI index since 1950

Monthly surface pressure anomalies—differences from the 1981-2010 average—in Darwin, Australia, compared to Tahiti. Positive values indicate a strong Walker Circulation, which occurs during La Niña. Negative values indicate a weak or disrupted Walker Circulation, which occurs during El Niño. NOAA Climate.gov image, based on data from the Climate Prediction Center.

Graph Display (small)
Southern Oscillation Index graph for thumbnail
Map Display (large)
Two maps of the tropical Pacific showing pressure anomalies during Southern Oscillation

Difference from average sea level pressure during winters when the Southern Oscillation Index is strongly positive (top) or negative (bottom). During La Niña (positive SOI), the pressure is higher than average (red) over the central Pacific near Tahiti, and lower than average (gray) over Australia. During El Niño, the SOI is negative, and the anomalies are reversed. NOAA Climate.gov image, based on data from the NOAA Physical Science Lab.

Use Graph
Yes