Table of
  1. T
  2. KAPLAN Indices NP SST anomaly avOS
Additional Information

TimeSST anomaly
months since 1960-01-01degreeC
Jan 1856-0.2239433
Feb 1856-0.1211201
Mar 1856-0.1087902
Apr 1856-0.04909912
May 1856-0.02385385
Jun 18560.01537875
Jul 1856-0.07247446
Aug 1856-0.2379172
Sep 1856-0.4017364
Oct 1856-0.4342333
Nov 1856-0.3409003
Dec 1856-0.2686417
Jan 1857-0.2097283
Feb 1857-0.2359667
Mar 1857-0.182702
Apr 1857-0.06312453
May 1857-0.08377417
Jun 1857-0.1448636
Jul 1857-0.2657465
Aug 1857-0.2347065
Sep 1857-0.2504361
Oct 1857-0.1898777
Nov 1857-0.002924297
Dec 18570.1296161
Jan 18580.04457241
Feb 1858-0.07479548
Mar 1858-0.117519
Apr 1858-0.1852207
May 1858-0.08038588
Jun 1858-0.1451592
Jul 1858-0.165121
Aug 1858-0.1575158
Sep 1858-0.1438203
Oct 1858-0.1631315
Nov 1858-0.1001038
Dec 1858-0.1502405
Jan 1859-0.2345669
Feb 1859-0.2313347
Mar 1859-0.1776994
Apr 1859-0.1461482
May 1859-0.1037911
Jun 1859-0.0702061
Jul 1859-0.1165897
Aug 1859-0.2308478
Sep 1859-0.179167
Oct 1859-0.1599058
Nov 18590.04087852
Dec 18590.1203915
Jan 18600.1147343
Feb 18600.1368735
Mar 1860-0.1381535
Apr 1860-0.3045768
May 1860-0.4630517
Jun 1860-0.4404036
Jul 1860-0.2929456
Aug 1860-0.3323866
Sep 1860-0.1625203
Oct 18600.02669065
Nov 18600.1318131
Dec 18600.03013408
Jan 1861-0.1239871
Feb 1861-0.1403031
Mar 1861-0.1143827
Apr 1861-0.2085935
May 1861-0.1771766
Jun 1861-0.01905458
Jul 18610.07318159
Aug 18610.09330056
Sep 18610.3160503
Oct 18610.4168834
Nov 18610.3927935
Dec 18610.4631617
Jan 18620.4513347
Feb 18620.5311834
Mar 18620.4355474
Apr 18620.3415329
May 18620.3245941
Jun 18620.2730903
Jul 18620.3564242
Aug 18620.2652155
Sep 18620.2134707
Oct 18620.2772394
Nov 18620.3772691
Dec 18620.4026865
Jan 18630.2900057
Feb 18630.1819765
Mar 18630.2411851
Apr 18630.226825
May 18630.2311034
Jun 18630.1516422
Jul 18630.09237251
Aug 1863-0.0352269
Sep 1863-0.05840465
Oct 18630.03413226
Nov 18630.07826864
Dec 18630.1087828
Jan 18640.07172196
Feb 18640.1165829
Mar 18640.2234157
Apr 18640.2177038
May 18640.2564754
Jun 18640.320757
Jul 18640.4215194
Aug 18640.2564645
Sep 18640.2031964
Oct 18640.1449652
Nov 18640.09906504
Dec 18640.1254514
Jan 18650.2102519
Feb 18650.3017876
Mar 18650.2081953
Apr 18650.1574768
May 18650.1091192
Jun 1865-5.6818360E-04
Jul 1865-0.04074597
Aug 1865-0.01002166
Sep 1865-0.02962099
Oct 1865-0.1490953
Nov 1865-0.2109579
Dec 1865-0.2112492
Jan 1866-0.09652039
Feb 18660.03513129
Mar 18660.1283401
Apr 18660.1911165
May 18660.4109379
Jun 18660.4896304
Jul 18660.3664663
Aug 18660.3622098
Sep 18660.3180382
Oct 18660.2957198
Nov 18660.1811968
Dec 18660.1165685
Jan 18670.08552115
Feb 18670.03527759
Mar 1867-0.2120021
Apr 1867-0.3438519
May 1867-0.3815978
Jun 1867-0.3587958
Jul 1867-0.2763703
Aug 1867-0.1733168
Sep 1867-0.1402877
Oct 1867-0.1283969
Nov 1867-0.1272028
Dec 1867-0.1499241
Jan 1868-0.2601004
Feb 1868-0.1780782
Mar 1868-0.06210336
Apr 1868-0.09796346
May 1868-0.1427646
Jun 1868-0.1044948
Jul 1868-0.2095781
Aug 1868-0.3212749
Sep 1868-0.3093171
Oct 1868-0.1930762
Nov 1868-0.1398735
Dec 1868-0.1986661
Jan 1869-0.2190452
Feb 1869-0.2512736
Mar 1869-0.3485172
Apr 1869-0.305399
May 1869-0.372144
Jun 1869-0.5241069
Jul 1869-0.5954376
Aug 1869-0.3795883
Sep 1869-0.08463478
Oct 18690.07632294
Nov 18690.1539815
Dec 18690.1740064
Jan 18700.08254775
Feb 1870-0.200762
Mar 1870-0.3237919
Apr 1870-0.4055529
May 1870-0.5898829
Jun 1870-0.4532557
Jul 1870-0.2601149
Aug 1870-0.1897437
Sep 1870-0.1740976
Oct 1870-0.1151702
Nov 1870-0.03369376
Dec 1870-0.1329148
Jan 1871-0.1037314
Feb 1871-0.05930771
Mar 1871-0.001971474
Apr 18710.02990076
May 1871-0.03471572
Jun 1871-0.06056917
Jul 18710.04730245
Aug 18710.1642197
Sep 18710.09535839
Oct 18710.03315029
Nov 1871-0.04003969
Dec 1871-0.02530315
Jan 1872-5.0768582E-04
Feb 1872-0.0288279
Mar 1872-0.03240598
Apr 1872-0.004781262
May 18720.06244475
Jun 18720.1158395
Jul 18720.07951145
Aug 1872-0.01231189
Sep 1872-0.01032058
Oct 1872-0.01810873
Nov 18720.004753131
Dec 18720.07034452
Jan 18730.08157702
Feb 1873-0.02370969
Mar 1873-0.1095978
Apr 1873-0.1416494
May 1873-0.2136757
Jun 1873-0.1733891
Jul 18730.03849928
Aug 18730.245701
Sep 18730.3799732
Oct 18730.4185486
Nov 18730.4598342
Dec 18730.3929577
Jan 18740.236949
Feb 18740.1521467
Mar 18740.06839114
Apr 1874-0.01231811
May 1874-0.03636134
Jun 18740.00287097
Jul 18740.1306102
Aug 18740.2536716
Sep 18740.3251513
Oct 18740.1842691
Nov 18740.2578902
Dec 18740.183387
Jan 18750.09388698
Feb 18750.03294112
Mar 18750.1185604
Apr 18750.1543199
May 18750.1672725
Jun 18750.3151721
Jul 18750.3648084
Aug 18750.3010231
Sep 18750.1450078
Oct 18750.1116771
Nov 18750.1359299
Dec 18750.2356238
Jan 18760.2355342
Feb 18760.06187159
Mar 18760.1217629
Apr 18760.07735765
May 18760.06837378
Jun 18760.1642006
Jul 18760.2052805
Aug 18760.0715686
Sep 1876-0.02289756
Oct 18760.02949804
Nov 1876-0.05734276
Dec 1876-0.1484307
Jan 1877-0.1225087
Feb 1877-0.1103436
Mar 1877-0.06921183
Apr 1877-0.09452729
May 1877-0.1661425
Jun 1877-0.1364664
Jul 1877-0.05994895
Aug 1877-0.1415492
Sep 1877-0.1194701
Oct 1877-0.2751297
Nov 1877-0.3497599
Dec 1877-0.4677922
Jan 1878-0.5945309
Feb 1878-0.647533
Mar 1878-0.6902617
Apr 1878-0.5875203
May 1878-0.5237999
Jun 1878-0.5342836
Jul 1878-0.5961388
Aug 1878-0.5126047
Sep 1878-0.1823472
Oct 1878-0.1440554
Nov 1878-0.3020321
Dec 1878-0.3312097
Jan 1879-0.3587185
Feb 1879-0.5089291
Mar 1879-0.3563863
Apr 1879-0.300008
May 1879-0.238299
Jun 1879-0.04540358
Jul 1879-0.01352609
Aug 1879-0.1443102
Sep 1879-0.3540889
Oct 1879-0.1081874
Nov 18790.09247649
Dec 18790.1713925
Jan 18800.1186292
Feb 18800.03094724
Mar 18800.002660144
Apr 18800.04505452
May 18800.1544018
Jun 1880-0.01528489
Jul 1880-0.1997563
Aug 1880-0.3002036
Sep 1880-0.427485
Oct 1880-0.3044835
Nov 1880-0.05037284
Dec 18800.07202229
Jan 18810.007700762
Feb 1881-0.06095318
Mar 1881-0.1759305
Apr 1881-0.1376848
May 1881-0.1716501
Jun 1881-0.3141157
Jul 1881-0.1778874
Aug 1881-0.2454234
Sep 1881-0.356384
Oct 1881-0.4778821
Nov 1881-0.3941664
Dec 1881-0.3246839
Jan 1882-0.1499177
Feb 1882-0.1438977
Mar 18820.03024175
Apr 18820.0826261
May 18820.11969
Jun 18820.1573611
Jul 18820.1062602
Aug 18820.02391017
Sep 1882-0.05855178
Oct 1882-0.1378019
Nov 18820.001972074
Dec 1882-0.02496332
Jan 1883-0.1486595
Feb 18830.1167883
Mar 18830.1121207
Apr 18830.05343926
May 18830.02719451
Jun 18830.06080127
Jul 18830.09161868
Aug 18830.3641677
Sep 18830.1178516
Oct 18830.01746673
Nov 18830.06900208
Dec 18830.1977865
Jan 18840.3061671
Feb 18840.2737917
Mar 18840.0232258
Apr 1884-0.007661279
May 18840.0546118
Jun 1884-0.0942447
Jul 1884-0.217699
Aug 1884-0.3541499
Sep 1884-0.3065213
Oct 1884-0.4108533
Nov 1884-0.5160481
Dec 1884-0.3655384
Jan 1885-0.2585238
Feb 1885-0.1374297
Mar 18850.1200307
Apr 18850.1259924
May 1885-0.08008538
Jun 1885-0.002563581
Jul 18850.01157569
Aug 1885-0.1319085
Sep 1885-0.4507159
Oct 1885-0.3330072
Nov 1885-0.3857671
Dec 1885-0.5009794
Jan 1886-0.4285007
Feb 1886-0.3293466
Mar 1886-0.3061779
Apr 1886-0.01061738
May 18860.03549181
Jun 18860.3330074
Jul 18860.253011
Aug 18860.1470412
Sep 18860.06037655
Oct 18860.2098439
Nov 18860.3236075
Dec 18860.2915361
Jan 18870.2065405
Feb 18870.1133444
Mar 18870.2153086
Apr 18870.2104357
May 18870.2573853
Jun 18870.2726387
Jul 18870.314966
Aug 18870.3620772
Sep 18870.2583488
Oct 18870.3920624
Nov 18870.3965727
Dec 18870.4976943
Jan 18880.3893134
Feb 18880.3117762
Mar 18880.1335458
Apr 18880.2150719
May 18880.1888942
Jun 18880.09808262
Jul 1888-0.1416912
Aug 1888-0.1007392
Sep 1888-0.1692047
Oct 1888-0.09824415
Nov 1888-0.009360089
Dec 1888-0.02661214
Jan 1889-0.06036796
Feb 1889-0.2037634
Mar 1889-0.2971573
Apr 1889-0.2235099
May 1889-0.5882276
Jun 1889-0.2693937
Jul 1889-0.2032117
Aug 18890.08932497
Sep 18890.08319936
Oct 18890.1001919
Nov 18890.09993492
Dec 18890.03189178
Jan 1890-0.03048129
Feb 1890-0.01138847
Mar 18900.1133042
Apr 18900.1875715
May 18900.1800985
Jun 18900.09012854
Jul 18900.1242193
Aug 18900.1359217
Sep 18900.02288158
Oct 1890-0.09275069
Nov 18900.1060021
Dec 18900.2299879
Jan 18910.2608769
Feb 18910.3525437
Mar 18910.3522914
Apr 18910.17674
May 18910.2678252
Jun 18910.1991775
Jul 18910.1427549
Aug 18910.2854469
Sep 18910.3357682
Oct 18910.3341774
Nov 18910.2966093
Dec 18910.3513049
Jan 18920.3489995
Feb 18920.2437871
Mar 18920.2652296
Apr 18920.1224988
May 18920.1038753
Jun 18920.0952173
Jul 1892-0.03972359
Aug 18920.1470881
Sep 18920.3581976
Oct 18920.2633943
Nov 18920.3062219
Dec 18920.1156734
Jan 1893-0.02993967
Feb 18930.06628766
Mar 1893-0.00249997
Apr 1893-0.216452
May 1893-0.181229
Jun 1893-0.2190329
Jul 1893-0.1233256
Aug 1893-0.1532366
Sep 1893-0.06413104
Oct 18930.01806893
Nov 1893-0.1125415
Dec 1893-0.03109153
Jan 1894-0.08820031
Feb 1894-0.09180443
Mar 1894-0.05287059
Apr 18940.1049334
May 18940.1358109
Jun 18940.2500456
Jul 18940.3627721
Aug 18940.4715033
Sep 18940.4453692
Oct 18940.4550917
Nov 18940.4176249
Dec 18940.3021928
Jan 18950.07887923
Feb 18950.07661545
Mar 18950.04005149
Apr 1895-0.01370816
May 1895-0.07812925
Jun 1895-0.1036319
Jul 1895-0.08707177
Aug 1895-0.1369267
Sep 1895-0.1080166
Oct 18950.02734615
Nov 1895-0.04957867
Dec 1895-0.1714656
Jan 1896-0.3410361
Feb 1896-0.3721882
Mar 1896-0.2443152
Apr 1896-0.1022594
May 1896-0.09240242
Jun 1896-0.1188092
Jul 1896-0.007217922
Aug 1896-0.05785308
Sep 1896-0.1717613
Oct 1896-0.3814229
Nov 1896-0.05808849
Dec 1896-0.1012819
Jan 1897-0.2397405
Feb 1897-0.38351
Mar 1897-0.346522
Apr 1897-0.3237986
May 1897-0.4743405
Jun 1897-0.3646812
Jul 1897-0.4901409
Aug 1897-0.390958
Sep 1897-0.2814375
Oct 1897-0.2759298
Nov 1897-0.1571591
Dec 1897-4.0587515E-04
Jan 18980.03553811
Feb 1898-0.00436722
Mar 18980.03694038
Apr 1898-0.1150847
May 1898-0.1418995
Jun 1898-0.2883611
Jul 1898-0.3437503
Aug 1898-0.4267288
Sep 1898-0.4529548
Oct 1898-0.383623
Nov 1898-0.2039257
Dec 1898-0.3353482
Jan 1899-0.03944968
Feb 18990.1208892
Mar 18990.0546045
Apr 18990.07292025
May 1899-0.1592118
Jun 1899-0.1582011
Jul 18990.01061379
Aug 1899-0.2500905
Sep 1899-0.4493109
Oct 1899-0.2230472
Nov 1899-0.2884555
Dec 1899-0.3350795
Jan 1900-0.3826722
Feb 1900-0.3533755
Mar 1900-0.2510784
Apr 1900-0.3038036
May 1900-0.3832741
Jun 1900-0.2245982
Jul 1900-0.3616095
Aug 1900-0.3336574
Sep 1900-0.102964
Oct 1900-0.02091899
Nov 1900-0.1509647
Dec 1900-0.1888744
Jan 1901-0.2961545
Feb 1901-0.1509501
Mar 1901-0.2408666
Apr 1901-0.1649798
May 1901-0.07576351
Jun 1901-0.132318
Jul 1901-0.1117223
Aug 1901-0.2969295
Sep 1901-0.5136991
Oct 1901-0.3899982
Nov 1901-0.2547033
Dec 1901-0.2557603
Jan 1902-0.4376974
Feb 1902-0.5856882
Mar 1902-0.6807846
Apr 1902-0.6915089
May 1902-0.5626217
Jun 1902-0.5549351
Jul 1902-0.5129133
Aug 1902-0.5590338
Sep 1902-0.6082888
Oct 1902-0.6299165
Nov 1902-0.5467882
Dec 1902-0.4136944
Jan 1903-0.3011371
Feb 1903-0.333836
Mar 1903-0.4918339
Apr 1903-0.5602843
May 1903-0.6267259
Jun 1903-0.6382386
Jul 1903-0.5796228
Aug 1903-0.5718893
Sep 1903-0.5402525
Oct 1903-0.4772749
Nov 1903-0.4281122
Dec 1903-0.4456106
Jan 1904-0.4619372
Feb 1904-0.3592292
Mar 1904-0.1938675
Apr 1904-0.3016011
May 1904-0.4039409
Jun 1904-0.2956786
Jul 1904-0.4852597
Aug 1904-0.6984842
Sep 1904-0.7174969
Oct 1904-0.539746
Nov 1904-0.4276198
Dec 1904-0.5156159
Jan 1905-0.5016847
Feb 1905-0.5200165
Mar 1905-0.5722678
Apr 1905-0.7300417
May 1905-0.7088113
Jun 1905-0.7416363
Jul 1905-0.5763818
Aug 1905-0.6529648
Sep 1905-0.3465945
Oct 1905-0.3028406
Nov 1905-0.3102526
Dec 1905-0.2817331
Jan 1906-0.3777224
Feb 1906-0.3996415
Mar 1906-0.4719463
Apr 1906-0.4423832
May 1906-0.3695366
Jun 1906-0.2916055
Jul 1906-0.1551028
Aug 1906-0.05989996
Sep 1906-0.122759
Oct 1906-0.2749321
Nov 1906-0.4233277
Dec 1906-0.2377082
Jan 1907-0.04579329
Feb 1907-0.01487953
Mar 19070.1142705
Apr 1907-0.003853764
May 1907-0.04470228
Jun 1907-0.06938105
Jul 1907-0.09784043
Aug 1907-0.1826953
Sep 1907-0.3588429
Oct 1907-0.2325722
Nov 1907-0.1871336
Dec 1907-0.2632835
Jan 1908-0.4859482
Feb 1908-0.418678
Mar 1908-0.5002843
Apr 1908-0.4082449
May 1908-0.4576463
Jun 1908-0.4779999
Jul 1908-0.4342166
Aug 1908-0.4087538
Sep 1908-0.459051
Oct 1908-0.3656553
Nov 1908-0.4903629
Dec 1908-0.6081459
Jan 1909-0.6095616
Feb 1909-0.634613
Mar 1909-0.6279627
Apr 1909-0.5765264
May 1909-0.565316
Jun 1909-0.1646229
Jul 1909-0.06529381
Aug 1909-0.05121526
Sep 19090.01279526
Oct 19090.08888756
Nov 19090.2649636
Dec 19090.26801
Jan 19100.1862675
Feb 1910-0.1236747
Mar 1910-0.3043978
Apr 1910-0.2827905
May 1910-0.1628112
Jun 1910-0.1587757
Jul 1910-0.08640505
Aug 19100.03464195
Sep 19100.1479374
Oct 19100.1561983
Nov 19100.08976714
Dec 19100.03961412
Jan 1911-0.1357526
Feb 1911-0.2369007
Mar 1911-0.02655
Apr 1911-0.2035701
May 1911-0.3560183
Jun 1911-0.5060977
Jul 1911-0.5123737
Aug 1911-0.6300088
Sep 1911-0.5170477
Oct 1911-0.3681282
Nov 1911-0.3066649
Dec 1911-0.4700484
Jan 1912-0.4251873
Feb 1912-0.2994179
Mar 1912-0.2371475
Apr 1912-0.3471457
May 1912-0.3534468
Jun 1912-0.3384826
Jul 1912-0.3013933
Aug 1912-0.4124428
Sep 1912-0.7595566
Oct 1912-0.3804763
Nov 1912-0.5132543
Dec 1912-0.1724321
Jan 1913-0.3281961
Feb 1913-0.3008618
Mar 1913-0.3421557
Apr 1913-0.3730299
May 1913-0.2118475
Jun 1913-0.2658091
Jul 1913-0.5218675
Aug 1913-0.5854004
Sep 1913-0.6601281
Oct 1913-0.4927882
Nov 1913-0.5305321
Dec 1913-0.4433761
Jan 1914-0.509706
Feb 1914-0.5358077
Mar 1914-0.4710342
Apr 1914-0.3845077
May 1914-0.2801126
Jun 1914-0.1718374
Jul 1914-0.01307102
Aug 19140.1803553
Sep 19140.2068771
Oct 19140.2375151
Nov 19140.03847542
Dec 1914-0.05131639
Jan 1915-0.2476975
Feb 1915-0.2973901
Mar 1915-0.2848427
Apr 1915-0.2920051
May 1915-0.2489267
Jun 1915-0.2358629
Jul 1915-0.2003359
Aug 1915-0.1429594
Sep 1915-0.2322943
Oct 1915-0.1536218
Nov 1915-0.150612
Dec 1915-0.3621541
Jan 1916-0.3205054
Feb 1916-0.2858956
Mar 1916-0.2932287
Apr 1916-0.3041729
May 1916-0.5430688
Jun 1916-0.6658736
Jul 1916-0.8237975
Aug 1916-0.5635726
Sep 1916-0.2792173
Oct 1916-0.09527235
Nov 1916-0.1299066
Dec 1916-0.1309019
Jan 1917-0.2501847
Feb 1917-0.2397743
Mar 1917-0.1175977
Apr 1917-0.04625064
May 1917-0.1788566
Jun 19170.05320867
Jul 1917-0.1405987
Aug 1917-0.1219042
Sep 19170.08439214
Oct 19170.217158
Nov 19170.1214436
Dec 19170.28358
Jan 19180.3421903
Feb 19180.1393356
Mar 19180.1358407
Apr 19180.04884357
May 1918-0.07220718
Jun 19180.003461116
Jul 1918-0.2735527
Aug 1918-0.232515
Sep 1918-0.3930081
Oct 1918-0.7698801
Nov 1918-0.6727099
Dec 1918-0.8256181
Jan 1919-0.8299537
Feb 1919-0.8537858
Mar 1919-0.5682765
Apr 1919-0.3509448
May 1919-0.4222122
Jun 1919-0.3291448
Jul 1919-0.3650692
Aug 1919-0.8750216
Sep 1919-0.6836225
Oct 1919-0.7134664
Nov 1919-0.6876815
Dec 1919-0.4279512
Jan 1920-0.008170101
Feb 19200.4081197
Mar 19200.388186
Apr 19200.3666976
May 19200.3229588
Jun 19200.4427937
Jul 19200.2322662
Aug 19200.3432008
Sep 19200.4110334
Oct 19200.2798448
Nov 1920-0.01012736
Dec 1920-0.2744026
Jan 1921-0.4538938
Feb 1921-0.2492327
Mar 1921-0.2076798
Apr 1921-0.2486319
May 1921-0.05846781
Jun 19210.01964417
Jul 19210.1169101
Aug 19210.1088896
Sep 19210.07799427
Oct 19210.00176541
Nov 1921-0.05587794
Dec 1921-0.4596154
Jan 1922-0.520422
Feb 1922-0.3676095
Mar 1922-0.4397314
Apr 1922-0.4436067
May 1922-0.4549404
Jun 1922-0.1718256
Jul 19220.1856489
Aug 19220.2814207
Sep 19220.2452274
Oct 19220.1126753
Nov 19220.04881688
Dec 1922-0.01686017
Jan 1923-0.1590434
Feb 1923-0.1169889
Mar 1923-0.1206807
Apr 1923-0.03729423
May 1923-0.003143696
Jun 1923-0.1158694
Jul 1923-0.2739053
Aug 1923-0.2987016
Sep 1923-0.2877752
Oct 1923-0.2954187
Nov 1923-0.1848874
Dec 1923-0.05181859
Jan 1924-0.1773012
Feb 1924-0.1864306
Mar 1924-0.3027713
Apr 1924-0.1989233
May 1924-0.2759232
Jun 1924-0.2408562
Jul 1924-0.01032165
Aug 19240.008286498
Sep 1924-0.07305674
Oct 1924-0.05108814
Nov 1924-0.4259191
Dec 1924-0.2511958
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Aug 1991-0.00658852
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