A new method to estimate ice age temperatures

被引:18
作者
Bintanja, R [1 ]
van de Wal, RSW [1 ]
Oerlemans, J [1 ]
机构
[1] Univ Utrecht, Inst Marine & Atmospher Res Utrecht, NL-3508 TA Utrecht, Netherlands
关键词
D O I
10.1007/s00382-004-0486-x
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
On glacial time scales, the waxing and waning of the Eurasian and North American ice sheets depend largely on variations in atmospheric temperature. As global sea level is primarily determined by the volume of these ice sheets, there is a direct (yet complex) relation between global sea level and the northern hemispheric (NH) temperature. This relation is essentially represented by a model of the NH ice sheets. We use a thermomechanical ice-sheet-ice shelf-bedrock model in conjunction with an inverse method to deduce a time series of NH temperature (from 120 kyr BP until present) that is consistent with the observed global sea level record. The advantage of this method is that it provides the annual mean surface air temperature averaged over the NH continents north of 40 degrees N. The results reveal that ice age temperatures were 4-10 degrees C lower than today, which agrees with other temperature reconstructions. However, reconstructed temperatures are comparitively low during the early stages of the glacial, a feature that is consistent with the rapid growth of the ice sheets. The sensitivity of the results for uncertainties in precipitation rate, in observed sea level and in some other model parameters is examined to quantify the error in reconstructed temperature. During the glacial period (120-15 kyr BP), surface air temperatures in the NH (north of 40 degrees N) were 7.2 +/- 1.5 degrees C lower than today's (interglacial) temperatures.
引用
收藏
页码:197 / 211
页数:15
相关论文
共 43 条
  • [1] Global ice volume variations through the last glacial cycle simulated by a 3-D ice-dynamical model
    Bintanja, R
    van de Wal, RSW
    Oerlemans, J
    [J]. QUATERNARY INTERNATIONAL, 2002, 95-6 : 11 - 23
  • [2] INITIATION AND DEVELOPMENT OF THE LAURENTIDE AND CORDILLERAN ICE SHEETS FOLLOWING THE LAST INTERGLACIATION
    CLARK, PU
    CLAGUE, JJ
    CURRY, BB
    DREIMANIS, A
    HICOCK, SR
    MILLER, GH
    BERGER, GW
    EYLES, N
    LAMOTHE, M
    MILLER, BB
    MOTT, RJ
    OLDALE, RN
    STEA, RR
    SZABO, JP
    THORLEIFSON, LH
    VINCENT, JS
    [J]. QUATERNARY SCIENCE REVIEWS, 1993, 12 (02) : 79 - 114
  • [3] EEMIAN COOLING IN THE NORWEGIAN SEA AND NORTH-ATLANTIC OCEAN PRECEDING CONTINENTAL ICE-SHEET GROWTH
    CORTIJO, E
    DUPLESSY, JC
    LABEYRIE, L
    LECLAIRE, H
    DUPRAT, J
    VANWEERING, TCE
    [J]. NATURE, 1994, 372 (6505) : 446 - 449
  • [4] Changes in meridional temperature and salinity gradients in the North Atlantic Ocean (30°-72°N) during the last interglacial period
    Cortijo, E
    Lehman, S
    Keigwin, L
    Chapman, M
    Paillard, D
    Labeyrie, L
    [J]. PALEOCEANOGRAPHY, 1999, 14 (01): : 23 - 33
  • [5] LARGE ARCTIC TEMPERATURE-CHANGE AT THE WISCONSIN-HOLOCENE GLACIAL TRANSITION
    CUFFEY, KM
    CLOW, GD
    ALLEY, RB
    STUIVER, M
    WADDINGTON, ED
    SALTUS, RW
    [J]. SCIENCE, 1995, 270 (5235) : 455 - 458
  • [6] Past temperatures directly from the Greenland Ice Sheet
    DahlJensen, D
    Mosegaard, K
    Gundestrup, N
    Clow, GD
    Johnsen, SJ
    Hansen, AW
    Balling, N
    [J]. SCIENCE, 1998, 282 (5387) : 268 - 271
  • [7] DONG BW, 1995, J CLIMATE, V8, P2471, DOI 10.1175/1520-0442(1995)008<2471:SSONHG>2.0.CO
  • [8] 2
  • [9] Initiation of the last glaciation in Northern Europe
    Forsstrom, L
    Punkari, M
    [J]. QUATERNARY SCIENCE REVIEWS, 1997, 16 (10) : 1197 - 1215
  • [10] METHODOLOGY OF THE LAST CLIMATIC CYCLE RECONSTRUCTION IN FRANCE FROM POLLEN DATA
    GUIOT, J
    [J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 1990, 80 (01) : 49 - 69