Chinese Loess Plateau Mass Accumulation Rate Data
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               World Data Center for Paleoclimatology, Boulder
                                  and
                     NOAA Paleoclimatology Program
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NOTE: PLEASE CITE CONTRIBUTORS WHEN USING THIS DATA!!!!!

NAME OF DATA SET: Chinese Loess Plateau Mass Accumulation Rate Data
LAST UPDATE: 4/2006 (Original receipt by WDC Paleo)
CONTRIBUTOR: Youbin Sun, State Key Laboratory of Loess and Quaternary Geology, 
Institute of Earth Environment, Chinese Academy of Sciences, Xian.
IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2006-034

SUGGESTED DATA CITATION: Sun, Y. and Z. An.  2006. 
Chinese Loess Plateau Mass Accumulation Rate Data.
IGBP PAGES/World Data Center for Paleoclimatology 
Data Contribution Series # 2006-034.
NOAA/NCDC Paleoclimatology Program, Boulder CO, USA.

ORIGINAL REFERENCE: Sun, Y. and Z. An. 2005. 
Late Pliocene-Pleistocene changes in mass accumulation rates 
of eolian deposits on the central Chinese Loess Plateau.
Journal of Geophysical Research, Vol. 110, D23101, doi:10.1029/2005JD006064.
 
ABSTRACT: 
Late Pliocene-Pleistocene changes in the mass accumulation rates (MARs) of 
eolian deposits on the central Chinese Loess Plateau (CLP) are reconstructed 
from measured bulk sediment densities combined with sedimentation rates 
calculated for two loess/red clay sequences. The reconstructed MARs demonstrate 
that over the past 3600 kyr, distinct aridity-humidity fluctuations occurred 
over glacial-interglacial timescales, and these were superimposed on a gradual 
long-term drying trend. Comparisons of the CLP MAR record with the MAR and d18O 
records for marine sediments suggest that the development of Northern Hemisphere 
ice sheets since the late Pliocene has played a part in increasing the aridity 
of central Asia. In addition, the phased uplift of the Himalaya-Tibetan Plateau
evidently had a profound influence on the aridity of central Asia; this was 
mediated by variations in the East Asian monsoonal circulation. Correlations 
among dust records from ice cores, marine sediments, and terrestrial loess over 
the last several glacial cycles provide compelling evidence that glacial periods 
are characterized by higher and more variable dust fluxes than interglacial 
intervals. Synchronous changes in the MAR, grain size, and d18O records reveal 
dynamic linkages between Asian interior aridity, paleowind intensity, and ice 
volume after the onset of major Northern Hemisphere glaciations.

GEOGRAPHIC REGION: China
PERIOD OF RECORD: 3600 KYrBP - present
FUNDING SOURCES:  
National Basic Research Program of China (2004CB7202028 and 2001CCB00100) and
National Science Foundation of China (40121303 and 40331001)


DESCRIPTION: 
Chinese Loess Plateau (CLP) mass accumulation rate (MAR) record spanning 
the late Pliocene and Pleistocene, generated from bulk density measurements 
on two continuous loess and red clay sequences in the central CLP.

Sedimentation rate for eolian sequences calculated using a refined
astronomical timescale and bulk density measurements.  

Loess sections from the central Chinese Loess Plateau:
Zhaojiachuan (ZJC, 35 deg. 45'N, 107 deg. 49'E, 1250 masl) 10cm. sampling interval
Lingtai (LT, 35 deg 4'N, 107deg. 39'E, 1350 m asl) 8 cm sampling interval



DATA:
1. Chinese Loess Plateau Mass Accumulation Rate Data

Age(ka)  MAR (g/cm3/ka)
   0     10.72
   2      10.4
   4      8.57
   6       7.8
   8      7.98
  10      9.08
  12      8.31
  14      34.8
  16     23.96
  18     33.53
  20     34.66
  22     28.68
  24     28.69
  26     31.13
  28     22.11
  30     12.22
  32     10.84
  34     11.64
  36     11.62
  38     12.23
  40      9.64
  42      11.7
  44     11.77
  46     11.73
  48     12.27
  50     10.43
  52     12.35
  54     11.97
  56     13.81
  58     22.58
  60     21.24
  62     21.58
  64      17.6
  66     19.18
  68     17.89
  70     19.85
  72     20.03
  74      9.46
  76      6.88
  78       5.7
  80      6.64
  82      6.31
  84      4.63
  86      6.29
  88      6.37
  90       6.3
  92      7.44
  94       6.9
  96      6.05
  98       6.1
 100      5.42
 102      6.04
 104      6.13
 106      5.15
 108         5
 110      5.24
 112      5.39
 114      5.57
 116      4.69
 118       4.2
 120      6.15
 122     14.04
 124     11.81
 126     12.72
 128     12.72
 130     36.95
 132     35.87
 134      40.2
 136     30.72
 138     20.77
 140     12.77
 142     11.68
 144     14.63
 146     13.46
 148     15.19
 150     12.56
 152     11.52
 154     23.07
 156     23.01
 158     25.53
 160     28.56
 162     24.69
 164     16.52
 166     13.01
 168     13.59
 170      13.7
 172     15.44
 174     15.61
 176      12.1
 178     19.48
 180     22.87
 182     26.23
 184     26.75
 186     24.83
 188     19.32
 190     12.07
 192      8.85
 194      8.98
 196     10.89
 198      9.02
 200     10.78
 202     13.47
 204     11.53
 206     11.81
 208      9.13
 210      7.47
 212      9.55
 214      9.85
 216      9.21
 218     10.08
 220      14.2
 222     15.95
 224     15.92
 226     18.86
 228     19.47
 230     13.15
 232     11.46
 234      8.18
 236      8.65
 238      8.54
 240      7.89
 242      7.52
 244      10.1
 246     14.75
 248     10.83
 250     11.51
 252     12.56
 254      10.3
 256     11.12
 258     10.58
 260      8.92
 262     20.74
 264     15.67
 266     16.93
 268     15.83
 270     23.76
 272     21.54
 274     24.14
 276     25.07
 278      22.1
 280     17.13
 282      6.55
 284      3.66
 286      3.19
 288      3.02
 290      3.13
 292      3.53
 294       4.4
 296      7.29
 298      6.41
 300      5.91
 302      7.12
 304      5.63
 306      6.56
 308      7.39
 310      6.92
 312      7.51
 314      7.09
 316      7.83
 318     11.79
 320      10.9
 322      9.51
 324     10.43
 326      7.37
 328      7.04
 330      7.25
 332      7.47
 334      7.02
 336     14.76
 338     23.64
 340     23.36
 342     24.83
 344      22.3
 346     22.55
 348     19.67
 350     20.13
 352     21.27
 354     19.82
 356     17.29
 358     12.34
 360     11.61
 362     15.51
 364     12.59
 366      8.46
 368      7.07
 370      6.33
 372      5.79
 374      5.54
 376      5.36
 378      5.24
 380      5.44
 382      5.99
 384      5.57
 386      5.93
 388      6.13
 390       5.6
 392      5.26
 394      5.82
 396      6.46
 398      6.49
 400      6.88
 402      7.68
 404      8.98
 406      8.56
 408      7.72
 410      9.12
 412      9.65
 414      8.33
 416       9.7
 418     10.96
 420      9.99
 422     11.13
 424     11.04
 426     15.71
 428      30.3
 430     31.67
 432      30.1
 434     28.01
 436      27.5
 438     28.66
 440     18.99
 442     15.49
 444      15.2
 446     20.01
 448     13.41
 450     16.13
 452     16.93
 454     22.09
 456     24.48
 458     16.83
 460     23.82
 462      11.9
 464     15.75
 466     16.17
 468     15.01
 470     17.95
 472     15.22
 474     15.51
 476      7.13
 478       7.9
 480      8.13
 482      7.03
 484      8.77
 486      9.74
 488      8.69
 490      9.39
 492         8
 494      6.89
 496       8.3
 498      7.61
 500      9.12
 502       8.3
 504      8.29
 506      8.14
 508      7.65
 510      8.85
 512      7.42
 514      6.62
 516      7.27
 518       6.8
 520      6.08
 522      5.66
 524      5.69
 526      7.08
 528       5.7
 530      5.21
 532      5.33
 534      5.97
 536      5.37
 538      4.82
 540      4.52
 542      4.79
 544      5.31
 546      5.53
 548      5.65
 550      4.79
 552      4.99
 554      5.06
 556      4.64
 558      6.17
 560      5.23
 562      4.78
 564      4.88
 566      4.73
 568      4.95
 570      4.81
 572      4.36
 574      4.05
 576      4.34
 578      5.61
 580      6.27
 582      7.14
 584       6.4
 586      6.48
 588      5.65
 590      5.52
 592      6.83
 594       6.1
 596      6.22
 598      6.31
 600      5.56
 602      5.83
 604      6.17
 606      6.12
 608      5.45
 610      5.03
 612      5.11
 614      5.39
 616      6.73
 618      6.64
 620     13.42
 622     20.49
 624     20.73
 626     20.38
 628     18.43
 630     23.07
 632      18.6
 634     16.29
 636     11.13
 638     11.52
 640     10.32
 642     13.01
 644     11.93
 646     10.14
 648     10.64
 650     10.57
 652     11.47
 654     19.34
 656     19.46
 658     22.45
 660     24.17
 662     25.81
 664     20.78
 666     21.49
 668     22.92
 670     22.95
 672     21.18
 674     27.01
 676     17.16
 678      9.99
 680      8.91
 682      8.82
 684      7.39
 686      5.15
 688      4.87
 690      4.76
 692      4.42
 694      4.18
 696      4.02
 698      4.76
 700     10.32
 702      9.21
 704     10.37
 706     11.37
 708      9.21
 710      7.59
 712      6.55
 714     15.03
 716     13.38
 718     15.37
 720     12.93
 722     12.85
 724      12.5
 726     13.85
 728     12.35
 730      9.51
 732      8.62
 734     10.19
 736       8.6
 738      5.54
 740      3.19
 742      3.84
 744      6.55
 746      6.41
 748      6.74
 750      7.62
 752     25.74
 754     23.16
 756     18.27
 758     13.77
 760      10.4
 762      8.38
 764      8.92
 766      9.63
 768      6.89
 770      7.94
 772      7.09
 774      7.53
 776      7.78
 778      9.98
 780      9.49
 782      7.78
 784      7.92
 786      8.51
 788      9.56
 790      15.1
 792     15.46
 794     13.69
 796     17.05
 798     12.34
 800     11.01
 802     10.86
 804      13.8
 806     12.41
 808     15.14
 810     15.28
 812     13.33
 814     14.21
 816     15.46
 818     10.76
 820     12.32
 822      8.76
 824      5.83
 826      7.37
 828      6.64
 830      6.35
 832     12.85
 834     14.25
 836     12.91
 838     11.85
 840      9.38
 842     12.78
 844     11.52
 846     13.02
 848      10.8
 850      8.49
 852      7.84
 854      7.82
 856       6.6
 858      7.41
 860      6.21
 862      6.15
 864      7.34
 866      6.74
 868     43.64
 870     43.75
 872     42.91
 874     46.74
 876     16.31
 878     18.98
 880     17.04
 882      19.3
 884      20.2
 886     16.77
 888     15.22
 890     28.59
 892     28.65
 894     29.81
 896     13.43
 898     11.57
 900     10.55
 902     11.96
 904     10.36
 906       9.5
 908     12.37
 910     17.52
 912     25.28
 914     33.25
 916     29.46
 918     28.81
 920     31.03
 922     33.97
 924     27.92
 926     20.73
 928     13.06
 930      7.09
 932      6.12
 934      6.46
 936       7.7
 938      6.36
 940      5.79
 942       5.7
 944      6.99
 946      7.52
 948     12.68
 950     17.42
 952     18.65
 954     10.97
 956     11.46
 958     13.45
 960     17.03
 962     15.63
 964     12.46
 966      9.74
 968       8.2
 970      9.07
 972      6.79
 974      6.71
 976      7.88
 978      7.56
 980       7.1
 982     11.61
 984     12.23
 986       8.4
 988     12.55
 990     11.15
 992      11.8
 994     10.44
 996      7.85
 998     10.73
1000     10.95
1002      9.78
1004      9.19
1006      7.64
1008      6.36
1010      8.37
1012      7.38
1014      6.65
1016      5.97
1018      5.82
1020       6.7
1022      6.64
1024      6.53
1026      6.87
1028      6.61
1030     10.88
1032     10.86
1034     17.09
1036     18.06
1038     17.24
1040     15.24
1042     16.75
1044     15.52
1046     14.11
1048      8.17
1050      5.62
1052      4.64
1054      5.69
1056      5.82
1058      6.14
1060      5.65
1062      6.18
1064      5.52
1066       5.1
1068     15.91
1070     22.09
1072     22.78
1074     14.39
1076     16.14
1078     12.91
1080     14.84
1082     15.45
1084     12.62
1086     17.74
1088     16.15
1090     16.34
1092     16.57
1094     15.04
1096     10.72
1098     11.09
1100     13.29
1102      9.41
1104     10.77
1106      7.28