The data presented here are preliminary data on a preliminary timescale from the North Greenland Ice Core Project (NorthGRIP). The NorthGRIP ice core project was directed and organized by the Ice and Climate Research Group at the Niels Bohr Institute, University of Copenhagen. It has been supported by funding agencies in Denmark (SNF), Belgium (FNRS-CFB), France (IFRTP and INSU/CNRS), Germany (AWI), Iceland (RannIs), Japan (MEXT), Sweden (SPRS), Switzerland (SNF) and the United States of America (NSF).
32100.5	29665.9
32101.5	23019.6
32102.5	35503.8
32103.5	50691.4
32104.5	43522.2
32105.5	39785.3
32106.5	61625.9
32107.5	70963.4
32108.5	69143.101
32109.5	43376.8
32110.5	57054
32111.5	49199.601
32112.5	70637.9
32113.5	71029.703
32114.5	83653.9
32115.5	42726.4
32116.5	48733.4
32117.5	50754.9
32118.5	33106.7
32119.5	58414.3
32120.5	46970.4
32121.5	37959.9
32122.5	28630.4
32123.5	23197.7
32124.5	22468.3
32125.5	34718.8
32126.5	37799.9
32127.5	55405.9
32128.5	51240.5
32129.5	38066.5
32130.5	44103.2
32131.5	54425.101
32132.5	55465.3
32133.5	66740.601
32134.5	81362.601
32135.5	68351.3
32136.5	58148.7
32137.5	40899.2
32138.5	51460.9
32139.5	43088.3
32140.5	32234.8
32141.5	54489.101
32142.5	48438.3
32143.5	41685.5
32144.5	29597.5
32145.5	44285.101
32146.5	89791
32147.5	82425.703
32148.5	52289.8
32149.5	37694.8
32150.5	42859.4
32151.5	50769.601
32152.5	39159.601
32153.5	50061.101
32154.5	37524.601
32155.5	37267.9
32156.5	50967.4
32157.5	32977.7
32158.5	32811.9
32159.5	27861
32160.5	17652.4
32161.5	19757.6
32162.5	29287.3
32163.5	33025.7
32164.5	40737
32165.5	52141.8
32166.5	24972.6
32167.5	25376.5
32168.5	39049.8
32169.5	29684.9
32170.5	37036.7
32171.5	33067.9
32172.5	71189.5
32173.5	39270.601
32174.5	28901.1
32175.5	33731.5
32176.5	29590.4
32177.5	30048
32178.5	43075.5
32179.5	26815.9
32180.5	58183.2
32181.5	67225.601
32182.5	62217
32183.5	44327.601
32184.5	33816.601
32185.5	24028.8
32186.5	27849.9
32187.5	26882.6
32188.5	35631.601
32189.5	43584.2
32190.5	42188.4
32191.5	44710
32192.5	35960.101
32193.5	24603.7
32194.5	32747.3
32195.5	26404.1
32196.5	27431.5
32197.5	40343.7
32198.5	29387
32199.5	30613.9
32200.5	35678.3
32201.5	37333.2
32202.5	86769
32203.5	69461.3
32204.5	49190.4
32205.5	28779.7
32206.5	18785.2
32207.5	30466.8
32208.5	37545.101
32209.5	39654.601
32210.5	35794
32211.5	25250.4
32212.5	22760.6
32215.5	34653
32216.5	33541.5
32217.5	25289.8
32218.5	12449.2
32219.5	26695.7
32220.5	39716.7
32221.5	48655.2
32222.5	44087.9
32223.5	27077.1
32224.5	34596.3
32225.5	33306.5
32226.5	41612.4
32227.5	59114.4
32228.5	32816.8
32229.5	33314.2
32230.5	42591.9
32231.5	56209.101
32232.5	44989.4
32233.5	60403.4
32234.5	85523.703
32235.5	35930.2
32236.5	33099.101
32237.5	40795.601
32238.5	33925.3
32239.5	28031.8
32240.5	36720.8
32241.5	42665
32242.5	31847.6
32243.5	35264.101
32244.5	37511.4
32247.5	96066.3
32248.5	95496.9
32249.5	85629.703
32250.5	66675.5
32251.5	52873
32252.5	62142
32253.5	39585.2
32254.5	30560.7
32255.5	41266.101
32256.5	64631.7
32257.5	63795.5
32258.5	72048.101
32259.5	69709.203
32260.5	49503.101
32261.5	46857.5
32262.5	78620.4
32263.5	80564.601
32264.5	95939.5
32265.5	67997.203
32266.5	68965.8
32267.5	46052.7
32268.5	109793
32269.5	206596
32270.5	117003
32271.5	159528
32272.5	278083
32273.5	192440
32274.5	101856
32275.5	194160
32276.5	166548
32279.5	169697
32280.5	199524
32281.5	190671
32282.5	202816
32283.5	209571
32284.5	263507
32285.5	298801
32286.5	149082
32287.5	157923
32288.5	212255
32289.5	181533
32290.5	132977
32291.5	148665
32292.5	198753
32293.5	294665
32294.5	211114
32295.5	239991
32296.5	296853
32297.5	305411
32298.5	205395
32299.5	179171
32300.5	160847
32301.5	190877
32302.5	198508
32303.5	240900
32304.5	230837
32305.5	225571
32306.5	159032
32307.5	209808
32308.5	230457
32309.5	224953
32310.5	224008
32311.5	279062
32312.5	311865
32313.5	283774
32314.5	211417
32315.5	173482
32316.5	139328
32317.5	173959
32318.5	185121
32319.5	189755
32320.5	336802
32321.5	335253
32322.5	406423
32323.5	366408
32324.5	304884
32325.5	261713
32326.5	383442
32327.5	381020
32328.5	277105
32329.5	265363
32330.5	282057
32331.5	196251
32332.5	174811
32333.5	141736
32334.5	215260
32335.5	407676
32336.5	352407
32337.5	364454
32338.5	467691
32339.5	357023
32340.5	318011
32341.5	322170
32342.5	229749
32343.5	280852
32344.5	497488
32345.5	456979
32346.5	313934
32347.5	237493
32348.5	187749
32349.5	169948
32350.5	181411
32351.5	214549
32352.5	206672
32353.5	163430
32354.5	180433
32355.5	428380
32356.5	528656
32357.5	449224
32358.5	482648
32359.5	433567
32360.5	266010
32361.5	274408
32362.5	271193
32363.5	394951
32364.5	611694
32365.5	602267
32366.5	381149
32367.5	464765
32368.5	365886
32369.5	341733
32370.5	503995
32371.5	587332
32372.5	357633
32373.5	209217
32374.5	213677
32375.5	190042
32376.5	153015
32377.5	228661
32378.5	262305
32379.5	235782
32380.5	264225
32381.5	256258
32382.5	228711
32383.5	290234
32384.5	340272
32385.5	259109
32389.5	161388
32390.5	181062
32391.5	291256
32392.5	346070
32393.5	303402
32394.5	206236
32395.5	259966
32396.5	327110
32397.5	278217
32398.5	554202
32399.5	1300000
32400.5	793603
32401.5	545062
32402.5	369955
32403.5	273069
32404.5	254711
32405.5	390125
32406.5	572634
32407.5	495696
32408.5	351661
32409.5	297920
32410.5	294368
32411.5	281743
32412.5	345724
32413.5	363346
32414.5	304857
32415.5	230697
32416.5	252670
32417.5	425179
32418.5	507429
32419.5	388651
32420.5	299627
32421.5	250214
32422.5	379577
32423.5	339984
32424.5	285555
32425.5	268448
32426.5	297450
32427.5	190635
32428.5	186879
32429.5	179688
32430.5	293664
32431.5	260912
32432.5	278554
32433.5	503175
32434.5	343584
32435.5	234278
32436.5	316325
32437.5	355730
32438.5	329056
32439.5	314786
32440.5	340078
32441.5	242311
32442.5	311777
32443.5	294261
32444.5	277052
32445.5	232847
32446.5	205511
32447.5	273695
32448.5	235815
32449.5	183318
32450.5	269072
32451.5	355900
32452.5	391940
32453.5	257186
32454.5	221668
32455.5	226537
32456.5	181723
32457.5	170667
32458.5	208835
32459.5	191763
32460.5	233679
32461.5	234624
32462.5	254141
32463.5	405063
32464.5	423780
32465.5	340386
32466.5	360607
32467.5	385646
32468.5	421689
32469.5	388656
32470.5	281276
32471.5	245639
32472.5	218453
32473.5	211934
32474.5	1420000
32475.5	1260000
32476.5	712352
32477.5	481032
32478.5	384863
32479.5	379877
32480.5	396626
32481.5	377876
32482.5	263611
32483.5	169561
32484.5	316954
32485.5	519108
32486.5	468383
32487.5	336879
32488.5	299859
32489.5	268286
32490.5	241440
32491.5	231320
32492.5	282131
32493.5	277253
32494.5	279141
32495.5	273577
32496.5	388774
32497.5	416646
32498.5	318516
32499.5	246892
32500.5	260448
32501.5	368385
32502.5	408741
32503.5	336434
32504.5	247218
32505.5	335064
32506.5	435531
32507.5	780877
32508.5	580308
32509.5	424423
32510.5	445511
32511.5	367174
32512.5	243596
32513.5	286009
32514.5	265932
32515.5	253252
32516.5	405284
32559.5	648576
32560.5	535233
32561.5	429235
32562.5	419076
32563.5	367588
32564.5	421435
32565.5	387111
32566.5	333402
32567.5	444767
32568.5	517982
32569.5	372338
32570.5	337923
32571.5	267597
32572.5	244602
32573.5	271527
32574.5	356965
32575.5	390873
32576.5	354066
32577.5	265325
32578.5	340135
32579.5	316828
32580.5	284671
32581.5	371660
32582.5	388847
32583.5	502011
32584.5	372066
32585.5	255443
32586.5	229854
32587.5	219974
32588.5	337158
32589.5	466172
32590.5	422234
32591.5	475457
32592.5	484020
32593.5	382987
32594.5	339860
32595.5	347830
32596.5	326255
32597.5	441005
32598.5	425586
32599.5	386998
32600.5	353575
32601.5	295083
32602.5	304816
32603.5	287679
32604.5	387390
32605.5	393626
32606.5	434302
32607.5	443876
32608.5	326946
32609.5	396317
32610.5	439144
32611.5	381706
32612.5	370702
32613.5	386064
32614.5	335024
32615.5	275289
32616.5	193249
32617.5	165876
32618.5	254740
32619.5	347863
32620.5	350147
32621.5	290586
32622.5	254464
32623.5	381086
32624.5	395641
32625.5	482476
32626.5	639328
32627.5	540592
32628.5	431570
32629.5	390431
32631.5	464036
32632.5	440100
32633.5	288530
32634.5	270620
32635.5	236066
32636.5	179914
32637.5	179400
32638.5	208689
32639.5	164413
32640.5	148802
32641.5	166590
32642.5	191319
32643.5	264337
32644.5	288262
32645.5	399644
32646.5	455343
32647.5	314570
32648.5	307186
32649.5	268114
32650.5	357648
32651.5	349537
32652.5	349361
32653.5	270148
32654.5	411166
32655.5	528246
32656.5	643322
32657.5	563713
32658.5	402532
32659.5	462201
32660.5	519977
32661.5	405630
32662.5	366544
32663.5	388953
32664.5	392551
32665.5	349970
32666.5	285007
32667.5	201442
32668.5	264061
32669.5	373503
32670.5	316983
32671.5	277501
32672.5	281195
32673.5	197919
32674.5	192207
32675.5	312451
32676.5	519205
32677.5	504215
32678.5	391416
32679.5	297998
32680.5	303842
32681.5	445554
32682.5	410717
32683.5	301149
32684.5	257896
32685.5	296387
32686.5	395214
32687.5	467217
32688.5	371140
32689.5	365715
32690.5	331882
32691.5	380729
32692.5	296656
32693.5	289678
32694.5	412992
32695.5	508087
32696.5	427187
32697.5	306817
32698.5	302401
32699.5	331693
32700.5	446306
32701.5	396585
32702.5	368916
32703.5	346628
32704.5	587498
32705.5	627009
32706.5	647643
32707.5	458629
32708.5	325166
32709.5	243313
32710.5	192053
32711.5	247376
32712.5	315274
32713.5	251271
32714.5	373407
32715.5	427964
32716.5	352833
32717.5	421098
32718.5	326973
32719.5	299395
32720.5	219632
32721.5	260693
32722.5	306350
32723.5	302779
32724.5	368108
32725.5	343599
32726.5	269215
32727.5	413010
32728.5	579756
32729.5	474611
32730.5	340919
32731.5	335716
32732.5	271009
32733.5	321806
32734.5	291865
32735.5	223999
32736.5	235233
32737.5	286098
32738.5	320016
32739.5	416635
32740.5	656097
32741.5	517002
32742.5	382125
32743.5	263743
32744.5	214659
32745.5	283180
32746.5	298474
32747.5	312105
32748.5	232723
32749.5	227310
32750.5	374178
32751.5	287932
32752.5	209444
32753.5	303690
32754.5	362378
32755.5	322297
32756.5	480519
32757.5	731720
32758.5	706201
32759.5	633953
32760.5	589450
32761.5	423300
32762.5	443082
32763.5	367521
32764.5	356931
32765.5	294068
32766.5	269003
32767.5	302859
32768.5	313712
32769.5	229892
32770.5	401737
32771.5	417566
32772.5	323439
32773.5	582774
32774.5	623639
32775.5	584538
32776.5	599544
32777.5	509480
32778.5	407961
32779.5	381975
32780.5	338150
32781.5	331710
32782.5	584710
32783.5	689416
32784.5	558283
32785.5	198579
32786.5	172465
32787.5	174488
32788.5	170915
32789.5	195466
32790.5	180835
32791.5	209138
32792.5	268931
32793.5	266688
32794.5	306844
32795.5	279178
32796.5	243534
32797.5	240043
32798.5	266928
32799.5	196223
32800.5	208933
32801.5	249312
32802.5	174948
32803.5	400243
32804.5	535854
32805.5	378320
32806.5	420610
32807.5	333845
32808.5	305340
32809.5	227963
32810.5	297012
32811.5	360494
32812.5	298596
32813.5	292806
32814.5	364163
32815.5	334582
32816.5	329353
32817.5	269467
32818.5	450284
32819.5	421317
32820.5	326474
32821.5	362975
32822.5	390142
32823.5	329461
32824.5	238882
32825.5	243090
32826.5	257447
32827.5	365028
32828.5	290314
32829.5	306716
32830.5	332169
32831.5	349420
32832.5	428221
32833.5	516386
32834.5	453193
32835.5	502164
32836.5	549930
32837.5	419845
32838.5	363790
32839.5	295469
32840.5	332360
32841.5	296993
32842.5	337887
32843.5	418673
32844.5	440334
32845.5	451430
32846.5	495380
32847.5	358435
32848.5	288710
32849.5	298029
32850.5	396233
32851.5	350365
32852.5	248474
32853.5	340668
32854.5	471597
32855.5	465891
32856.5	354479
32857.5	357492
32858.5	327180
32868.5	436627
32869.5	419251
32870.5	326851
32871.5	336236
32872.5	354176
32873.5	286345
32874.5	301697
32875.5	313365
32876.5	483206
32877.5	527712
32878.5	605532
32879.5	632704
32880.5	409365
32881.5	264746
32882.5	327399
32883.5	244902
32884.5	318345
32885.5	315213
32886.5	336704
32887.5	359042