paleo data:
  measurement table:
    google work sheet key: okoyqhw
    table name: paleo1measurement1
    missing value: nan
    dust:
      t sid: LPD23d73becxxx
      has max value: 96.7
      has mean value: 59.1173
      has median value: 59.1
      has min value: 14.8
      measurement table name: measurementTable1
      paleo data table name: Collins
      units: percent
      use in global temperature analysis: FALSE
      variable name: dust
      median res12k: 130
      proxy lumps: biophysical
      proxy lumps original: mineral
      mean value12k: 51.4226
      temperature12k uncertainty: NA
      temp12k dk index: NA
      has mean: 59.1173
      has median: 59.1
      has max: 96.7
      has min: 14.8
      most recent compilations: HoloceneAbruptChange-0_10_0
      notes: null
      proxy: multiproxy
      proxy general: elemental
      values: 43.2
      values: 55.4
      values: 40
      values: 50.1
      values: 57.4
      values: 45.8
      values: 57
      values: 65.5
      values: 63.5
      values: 51.4
      values: 34.5
      values: 48.6
      values: 49.5
      values: 46.8
      values: 44.6
      values: 64.2
      values: 56.2
      values: 65.1
      values: 66.4
      values: 24.2
      values: 36.2
      values: 53.7
      values: 48.1
      values: 61
      values: 32.9
      values: 65.3
      values: 49.8
      values: 53.8
      values: 28.1
      values: 47.6
      values: 56.1
      values: 47.3
      values: 44.8
      values: 33.6
      values: 31.3
      values: 44.1
      values: 48.7
      values: 57.6
      values: 32.6
      values: 47.7
      values: 55.6
      values: 53.5
      values: 40.4
      values: 54.1
      values: 45.7
      values: 26.7
      values: 54.2
      values: 43.9
      values: 51.2
      values: 40.3
      values: 34.9
      values: 63.1
      values: 69
      values: 45.9
      values: 29.2
      values: 60.7
    year:
      t sid: RqBN5GXsFru
      data type: float
      description: Year AD
      has max value: 1340
      has mean value: -28793.1525
      has median value: -29560
      has min value: 58010
      inferred variable type: year
      measurement table name: measurementTable1
      paleo data table name: Collins
      units: yr AD
      variable name: year
      variable type: inferred
      temperature12k uncertainty: NA
      has mean: -28793.1525
      has median: -40710
      has max: 1340
      has min: -58010
      is primary: true
      notes: NA; paleoData_isPrimary has been standardized
      values: 1340
      values: 1170
      values: 1000
      values: 830
      values: 660
      values: 490
      values: 320
      values: 150
      values: -20
      values: -190
      values: -360
      values: -530
      values: -710
      values: -880
      values: -960
      values: -1050
      values: -1130
      values: -1220
      values: -1390
      values: -1560
      values: -1730
      values: -1900
      values: -2070
      values: -2240
      values: -2410
      values: -2580
      values: -2750
      values: -2940
      values: -3150
      values: -3360
      values: -3490
      values: -3620
      values: -3750
      values: -3880
      values: -4010
      values: -4140
      values: -4270
      values: -4400
      values: -4530
      values: -4660
      values: -4790
      values: -4920
      values: -5050
      values: -5180
      values: -5310
      values: -5440
      values: -5570
      values: -5700
      values: -5830
      values: -5960
      values: -6090
      values: -6220
      values: -6330
      values: -6420
      values: -6510
      values: -6600
      values: -6690
      values: -6780
      values: -6880
      values: -6970
    age:
      t sid: ROodVJ637bW
      data type: float
      description: Years before present (1950) BP
      has max value: 59960
      has mean value: 30743.1525
      has median value: 31510
      has min value: 610
      inferred variable type: age
      measurement table name: measurementTable1
      paleo data table name: Collins
      units: yr BP
      variable name: age
      variable type: inferred
      temperature12k uncertainty: NA
      has mean: 30743.1525
      has median: 40450
      has max: 59960
      has min: 610
      datum: 1950
      is primary: true
      notes: NA; paleoData_isPrimary has been standardized; paleoData_datum has been standardized
      values: 610
      values: 780
      values: 950
      values: 1120
      values: 1290
      values: 1460
      values: 1630
      values: 1800
      values: 1970
      values: 2140
      values: 2310
      values: 2480
      values: 2660
      values: 2830
      values: 2910
      values: 3000
      values: 3080
      values: 3170
      values: 3340
      values: 3510
      values: 3680
      values: 3850
      values: 4020
      values: 4190
      values: 4360
      values: 4530
      values: 4700
      values: 4890
      values: 5100
      values: 5310
      values: 5440
      values: 5570
      values: 5700
      values: 5830
      values: 5960
      values: 6090
      values: 6220
      values: 6350
      values: 6480
      values: 6610
      values: 6740
      values: 6870
      values: 7000
      values: 7130
      values: 7260
      values: 7390
      values: 7520
      values: 7650
      values: 7780
      values: 7910
      values: 8040
      values: 8170
      values: 8280
      values: 8370
      values: 8460
      values: 8550
      values: 8640
      values: 8730
      values: 8830
archive type: MarineSediment
created by: matlab
data set name: GeoB7920-2.Collins.2013
google metadata worksheet: okt46a6
lipdverse link: https://lipdverse.org/data/2kciW5nxoEKqdQENT9If/1_0_17
max year: 59960
min year: 610
tag MD5: _NaN_
n unique ages: 0
ages per kyr: 0
n unique other ages: 0
has depth: 1
n unique good ages: 0
other ages per kyr: 0
lipd complete: 100%
dataset id: 2kciW5nxoEKqdQENT9If
archive type original: Marine Sediment
original data url: https://doi.org/10.1594/PANGAEA.757457
dataset version: 1.0.17
lipd version: 1.3
pub: Abrupt shifts of the Sahara–Sahel boundary during Heinrich stadials
pub: Coherent high- and low-latitude control of the northwest African hydrological balance

direction: negative
interp direction: negative
scope: climate
seasonality: Summer
is annual: FALSE
variable: effectivePrecipitation
variable group: M
variable detail: @surface
seasonality general: Summer

seasonality: NA

has mean: 153.7565
has median: 170
has max: 730
has min: 50

compilation name: HoloceneAbruptChange
compilation version: 0_5_0
compilation version: 0_6_0
compilation version: 0_7_0
compilation version: 0_8_0
compilation version: 0_9_0
compilation version: 0_11_0

compilation name: Hydro21k
compilation version: 0_4_0
compilation version: 0_5_0
compilation version: 0_7_0
compilation version: 0_8_0
compilation version: 0_9_0
compilation version: 0_10_0
compilation version: 0_11_0

has mean: 153.7565
has median: 170
has max: 730
has min: 50

has max value: nan
has mean value: nan
has median value: nan
has min value: nan

has mean: 153.7565
has median: 170
has max: 730
has min: 50

has mean: 371.4551
has median: 368
has max: 1066
has min: 210

variable: precipitation
direction: positive
scope: climate
variable detail: @continent
seasonality: Annual
basis: "e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "
seasonality general: Annual
variable group: P

seasonality: NA

has mean: 371.4551
has median: 368
has max: 1066
has min: 210

compilation name: HoloceneHydroclimate
compilation version: 0_3_0
compilation version: 0_4_0
compilation version: 0_5_0
compilation version: 0_6_0
compilation version: 0_7_0
compilation version: 0_8_0
compilation version: 0_9_0
compilation version: 0_9_1

compilation name: Hydro21k
compilation version: 0_1_1
compilation version: 0_2_0
compilation version: 0_3_1
compilation version: 0_4_0
compilation version: 0_5_0
compilation version: 0_7_0
compilation version: 0_8_0
compilation version: 0_9_0
compilation version: 0_10_0
compilation version: 0_11_0

compilation name: HoloceneAbruptChange
compilation version: 0_11_0

t sid: RwsTzGhOpzR
data type: float
description: depth
has max value: 7.48
has mean value: 3.8018
has median value: 3.81
has min value: 0.04
measurement table name: measurementTable1
paleo data table name: Collins
units: m
variable name: depth
variable type: measured
temperature12k uncertainty: NA
has mean: 3.8018
has median: 3.81
has max: 7.48
has min: 0.04
is primary: true
notes: NA; paleoData_isPrimary has been standardized
proxy observation type: depth
values: 0.04
values: 0.06
values: 0.08
values: 0.1
values: 0.12
values: 0.14
values: 0.16
values: 0.18
values: 0.2
values: 0.22
values: 0.24
values: 0.26
values: 0.28
values: 0.3
values: 0.31
values: 0.32
values: 0.33
values: 0.34
values: 0.36
values: 0.38
values: 0.4
values: 0.42
values: 0.44
values: 0.46
values: 0.48
values: 0.5
values: 0.52
values: 0.54
values: 0.56
values: 0.58
values: 0.6
values: 0.62
values: 0.64
values: 0.66
values: 0.68
values: 0.7
values: 0.72
values: 0.74
values: 0.76
values: 0.78
values: 0.8
values: 0.82
values: 0.84
values: 0.86
values: 0.88
values: 0.9
values: 0.92
values: 0.94
values: 0.96
values: 0.98
values: 1
values: 1.02
values: 1.04
values: 1.06
values: 1.08
values: 1.1
values: 1.12
values: 1.14
values: 1.16
values: 1.18

t sid: LPDd737d3bdxxx
has max value: 5.4
has mean value: 2.9233
has median value: 2.7
has min value: 1.1
measurement table name: measurementTable1
paleo data table name: Collins
use in global temperature analysis: FALSE
variable name: uncertaintyHigh
median res12k: 130
mean value12k: 3.2607
temperature12k uncertainty: NA
temp12k dk index: NA
units: unitless
has mean: 2.9233
has median: 2.7
has max: 5.4
has min: 1.1
measurement material: dust
notes: NA; paleoData_measurementMaterial has been standardized
values: 2.4
values: 1.9
values: 2.2
values: 2.1
values: 2.6
values: 2.5
values: 2
values: 1.8
values: 2.3
values: 2.7
values: 3.4
values: 3.3
values: 3.2
values: 3.5
values: 3.9
values: 4
values: 3.7
values: 4.5
values: 5
values: 4.3
values: 4.1
values: 4.6
values: 5.2
values: 4.4
values: 4.8
values: 5.4
values: 5.3
values: 4.2
values: 4.9
values: 3.6
values: 2.8
values: 3
values: 2.9
values: 3.1
values: 3.8
values: 1.7
values: 1.5
values: 1.6
values: 1.4
values: 1.2
values: 1.1
values: 4.7
values: 5.1
interpretation:
  scope: climate
calibration:
  seasonality: NA
has resolution:
  has mean: 153.7565
  has median: 170
  has max: 730
  has min: 50

t sid: LPD87f9c656xxx
has max value: 5.8
has mean value: 3.0158
has median value: 2.7
has min value: 1.2
measurement table name: measurementTable1
paleo data table name: Collins
use in global temperature analysis: FALSE
variable name: uncertaintyLow
median res12k: 130
mean value12k: 3.3583
temperature12k uncertainty: NA
temp12k dk index: NA
units: unitless
has mean: 3.0158
has median: 2.7
has max: 5.8
has min: 1.2
measurement material: dust
notes: NA; paleoData_measurementMaterial has been standardized
values: 2.3
values: 1.9
values: 2
values: 2.1
values: 2.2
values: 2.4
values: 2.5
values: 1.7
values: 2.7
values: 3.5
values: 3.4
values: 3.3
values: 3.6
values: 4
values: 4.2
values: 3.7
values: 4.7
values: 4.1
values: 5.3
values: 4.5
values: 4.3
values: 5.6
values: 4.8
values: 5.1
values: 5.8
values: 4.6
values: 5
values: 5.7
values: 5.2
values: 5.5
values: 4.4
values: 3.8
values: 3.2
values: 3.1
values: 3
values: 2.8
values: 2.9
values: 2.6
values: 3.9
values: 1.8
values: 1.4
values: 1.2
values: 1.3
values: 1.5
values: 5.4
values: 4.9
interpretation:
  scope: climate
calibration:
  seasonality: NA
has resolution:
  has mean: 153.7565
  has median: 170
  has max: 730
  has min: 50

table name: paleo1measurement2
missing value: nan
depth:
  archive type: MarineSediment
  variable name: depth
  proxy observation type: na
  units: m
  t sid: WEBa1a18e15
  has mean: 8.0401
  has median: 15.93
  has max: 15.98
  has min: 0.03
  is primary: true
  notes: NA; paleoData_isPrimary has been standardized
  values: 0.03
  values: 0.08
  values: 0.13
  values: 0.18
  values: 0.23
  values: 0.28
  values: 0.33
  values: 0.38
  values: 0.43
  values: 0.48
  values: 0.53
  values: 0.58
  values: 0.63
  values: 0.68
  values: 0.73
  values: 0.78
  values: 0.83
  values: 0.88
  values: 0.93
  values: 0.98
  values: 1.03
  values: 1.08
  values: 1.13
  values: 1.18
  values: 1.23
  values: 1.28
  values: 1.33
  values: 1.38
  values: 1.43
  values: 1.48
  values: 1.53
  values: 1.58
  values: 1.63
  values: 1.68
  values: 1.73
  values: 1.78
  values: 1.83
  values: 1.88
  values: 1.93
  values: 1.98
  values: 2.03
  values: 2.13
  values: 2.18
  values: 2.23
  values: 2.28
  values: 2.33
  values: 2.38
  values: 2.43
  values: 2.48
  values: 2.53
  values: 2.58
  values: 2.63
  values: 2.68
  values: 2.78
  values: 2.83
  values: 2.88
  values: 2.93
  values: 2.98
  values: 3.03
  values: 3.08
  values: 3.13
  values: 3.18
  values: 3.23
  values: 3.28
  values: 3.33
  values: 3.38
  values: 3.43
  values: 3.48
  values: 3.53
age:
  archive type: MarineSediment
  variable name: age
  proxy observation type: na
  units: yr BP
  t sid: WEB710c4615
  has mean: 61070.2492
  has median: 5310
  has max: 116414
  has min: 520
  units original: yr BP
  datum: 1950
  is primary: true
  notes: NA; paleoData_isPrimary has been standardized; paleoData_datum has been standardized
  values: 520
  values: 955
  values: 1391
  values: 1826
  values: 2262
  values: 2697
  values: 3133
  values: 3568
  values: 4004
  values: 4439
  values: 4875
  values: 5310
  values: 5616
  values: 5921
  values: 6227
  values: 6533
  values: 6838
  values: 7144
  values: 7450
  values: 7755
  values: 8061
  values: 8367
  values: 8672
  values: 8978
  values: 9283
  values: 9589
  values: 9895
  values: 10200
  values: 10506
  values: 10812
  values: 11117
  values: 11423
  values: 11729
  values: 12034
  values: 12340
  values: 12564
  values: 12787
  values: 13011
  values: 13235
  values: 13458
  values: 13682
  values: 14129
  values: 14353
  values: 14576
  values: 14800
  values: 15434
  values: 16069
  values: 16703
  values: 17337
  values: 17870
  values: 18403
  values: 18936
  values: 19469
  values: 20535
  values: 21069
  values: 21602
  values: 22135
  values: 22668
  values: 23201
  values: 23734
  values: 24267
  values: 24800
  values: 25333
  values: 25866
  values: 26399
  values: 26932
  values: 27465
grain size:
  archive type: MarineSediment
  variable name: grainSize
  proxy observation type: humidity index
  description: Continental humidity index
  units: unitless
  t sid: WEB20f89efc
  has mean: -0.2391
  has median: -0.7074
  has max: 1.5405
  has min: -1.7889
  mean value12k: 0.4208
  median res12k: 306
  proxy: grain size
  QC certification: CH
  proxy detail: end member
  proxy general: sedimentology
  units original: index
  proxy lumps: biophysical
  proxy lumps original: particle size
  notes: ( log[EM3/(EM1+EM2)]
  values: -0.0295
  values: -0.0872
  values: -0.1171
  values: 0.0731
  values: 0.2181
  values: 0.1563
  values: 0.2958
  values: 0.586
  values: 0.4386
  values: 0.6615
  values: 0.7812
  values: 1.021
  values: 1.369
  values: 0.9591
  values: 0.8256
  values: 1.1579
  values: 1.5405
  values: 0.3234
  values: 0.7671
  values: 0.4982
  values: 0.2823
  values: 0.0995
  values: 0.2424
  values: 0.2293
  values: 0.3784
  values: 0.4656
  values: 0.2108
  values: 0.1743
  values: 0.2237
  values: 0.2126
  values: -0.0052
  values: 0.0809
  values: -0.1455
  values: -0.3653
  values: -0.5248
  values: -0.644
  values: 0.0504
  values: -0.3174
  values: -0.2045
  values: -0.013
  values: 0.0026
  values: -0.2367
  values: -0.4882
  values: -0.3826
  values: -0.8411
  values: -0.7706
  values: -0.7494
  values: -0.964
  values: -1.0264
  values: -0.9174
  values: -0.5702
  values: -0.4216
  values: -0.2669
  values: -0.7074
  values: -0.5024
  values: -0.5229
  values: -0.5945
  values: -0.7741
  values: -0.5624
  values: -0.7889

measurement table:
  table name: chron1measurement1
  missing value: nan
  depth:
    number: 1
    variable name: depth
    units: m
    t sid: WEB-5db62-5e72-4a9c-9bc2-81128
    has mean: 1.6175
    has median: 1.705
    has max: 2.98
    has min: 0.03
    values: 0.03
    values: 0.53
    values: 1.03
    values: 1.48
    values: 1.93
    values: 2.28
    values: 2.68
    values: 2.98
  age14 c:
    number: 2
    variable name: age14C
    units: yr 14C BP
    t sid: WEB-4953e-4e52-4889-8096-51c8c
    has mean: 10594.375
    has median: 12357.5
    has max: 20100
    has min: 900
    values: 900
    values: 4615
    values: 7810
    values: 9530
    values: 12100
    values: 12980
    values: 16720
    values: 20100
  uncertainty1s:
    number: 3
    variable name: uncertainty1s
    units: year
    t sid: WEB-302f4-804b-4919-93ec-801b3
    has mean: 89.375
    has median: 47.5
    has max: 160
    has min: 35
    values: 35
    values: 60
    values: 90
    values: 110
    values: 70
    values: 80
    values: 160
  reservoir:
    number: 4
    variable name: reservoir
    units: year
    t sid: WEB-46b83-6267-4298-9572-68dd7
    has mean: 400
    has median: 400
    has max: 400
    has min: 400
    values: 400

version: 1.0.17
last version: 1.0.16
curator: nicholas
timestamp: 2023-08-17 19:07:41 UTC
changes:
  paleo column metadata: grainSize (WEB20f89efc): paleoData_variableName: 'grain size' has been replaced by 'grainSize'

version: 1.0.16
last version: 1.0.15
curator: nicholas
timestamp: 2023-08-10 22:51:55 UTC
changes:
  publication metadata: pub2_doi: 'https://doi.org/10.1038/ngeo289' has been replaced by '10.1038/ngeo289'
  paleo column metadata: dust (LPD23d73becxxx): paleoData_proxy: '((( mineral ))) deleteMe /// multiproxy' has been replaced by 'multiproxy'
  paleo column metadata: grain size (WEB20f89efc): paleoData_notes: '' has been replaced by '( log[EM3/(EM1+EM2)]'
  paleo column metadata: grain size (WEB20f89efc): paleoData_variableName: '((( log[EM3/(EM1+EM2)] ))) needsToBeChanged /// grainSize' has been replaced by 'grain size'
  paleo interpretation metadata: dust (LPD23d73becxxx): interpretation1_seasonalityGeneral: '((( null ))) SummerOnly /// Summer' has been replaced by 'Summer'
  paleo interpretation metadata: grain size (WEB20f89efc): interpretation1_variable: '((( P ))) effectivePrecipitation /// precipitation' has been replaced by 'precipitation'

version: 1.0.15
last version: 1.0.14
curator: nicholas
timestamp: 2023-07-05 00:40:16 UTC
changes:
  paleo column metadata: dust (LPD23d73becxxx): paleoData_proxy: 'multiproxy' has been replaced by '((( mineral ))) deleteMe /// multiproxy'
  paleo column metadata: ((( log[EM3/(EM1+EM2)] ))) needsToBeChanged /// grainSize (WEB20f89efc): paleoData_variableName: 'grainSize' has been replaced by '((( log[EM3/(EM1+EM2)] ))) needsToBeChanged /// grainSize'
  paleo interpretation metadata: dust (LPD23d73becxxx): interpretation1_seasonalityGeneral: 'Summer' has been replaced by '((( null ))) SummerOnly /// Summer'
  paleo interpretation metadata: ((( log[EM3/(EM1+EM2)] ))) needsToBeChanged /// grainSize (WEB20f89efc): interpretation1_variable: 'precipitation' has been replaced by '((( P ))) effectivePrecipitation /// precipitation'

version: 1.0.14
last version: 1.0.13
curator: nicholas
timestamp: 2023-06-02 19:01:19 UTC
changes:
  paleo column metadata: grainSize (WEB20f89efc): paleoData_notes: '((( ((( ((( ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "; paleoData_variableName updated; paleoData_proxy updated ))) ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " /// ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " ))) ""We use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " /// "use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " ))) "use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " /// "use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "' has been replaced by ''
  paleo column metadata: grainSize (WEB20f89efc): paleoData_variableName: '((( ((( needsToBeChanged ))) grainSize /// index ))) index /// index' has been replaced by 'grainSize'

version: 1.0.13
last version: 1.0.12
curator: nicholas
timestamp: 2023-05-31 20:38:33 UTC
changes:
  paleo column metadata: ((( ((( needsToBeChanged ))) grainSize /// index ))) index /// index (WEB20f89efc): paleoData_notes: '"use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "' has been replaced by '((( ((( ((( ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "; paleoData_variableName updated; paleoData_proxy updated ))) ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " /// ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " ))) ""We use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " /// "use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " ))) "use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " /// "use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "'
  paleo column metadata: ((( ((( needsToBeChanged ))) grainSize /// index ))) index /// index (WEB20f89efc): paleoData_variableName: 'index' has been replaced by '((( ((( needsToBeChanged ))) grainSize /// index ))) index /// index'

version: 1.0.12
last version: 1.0.11
curator: ccr97
timestamp: 2023-05-31 17:44:15.640173 UTC
notes: Updated lipdverse database entry with a changed file.
changes:
  publication metadata: pub2_doi: '10.1038/ngeo289' has been replaced by 'https://doi.org/10.1038/ngeo289'
  paleo column metadata: dust (LPD23d73becxxx): paleoData_notes: '' has been replaced by 'null'
  paleo column metadata: dust (LPD23d73becxxx): paleoData_QCCertification: 'CR' has been replaced by ''
  paleo column metadata: index (WEB20f89efc): paleoData_notes: '((( ((( ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "; paleoData_variableName updated; paleoData_proxy updated ))) ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " /// ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " ))) ""We use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " /// "use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "' has been replaced by '"use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "'
  paleo column metadata: index (WEB20f89efc): paleoData_QCCertification: 'CH,CR' has been replaced by 'CH'
  paleo column metadata: index (WEB20f89efc): paleoData_units: 'ratio' has been replaced by 'unitless'
  paleo column metadata: index (WEB20f89efc): paleoData_variableName: '((( needsToBeChanged ))) grainSize /// index' has been replaced by 'index'
  paleo interpretation metadata: index (WEB20f89efc): interpretation1_variable: 'effectivePrecipitation' has been replaced by 'precipitation'
  paleo interpretation metadata: index (WEB20f89efc): interpretation1_variableDetail: 'region@surface' has been replaced by '@continent'

version: 1.0.11
last version: 1.0.10
curator: nicholas
timestamp: 2023-05-25 17:42:54 UTC
notes: Updated lipdverse database entry with a changed file.
changes:
  geographic metadata: geo_elevation: '' has been replaced by '-2278'

version: 1.0.10
last version: 1.0.9
curator: nicholas
timestamp: 2023-05-09 22:31:27 UTC
changes:
  paleo column metadata: index (WEB20f89efc): paleoData_notes: '((( ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "; paleoData_variableName updated; paleoData_proxy updated ))) ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " /// ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "' has been replaced by '"use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "'
  paleo column metadata: index (WEB20f89efc): paleoData_variableName: 'needsToBeChanged' has been replaced by 'index'

version: 1.0.9
last version: 1.0.8
curator: nicholas
timestamp: 2023-03-24 22:24:25 UTC
changes:
  paleo column metadata: dust (LPD23d73becxxx): paleoData_proxy: '' has been replaced by 'multiproxy'
  paleo column metadata: dust (LPD23d73becxxx): paleoData_proxyGeneral: '' has been replaced by 'elemental'
  paleo column metadata: needsToBeChanged (WEB20f89efc): paleoData_proxyGeneral: 'biophysical' has been replaced by 'sedimentology'
  paleo interpretation metadata: dust (LPD23d73becxxx): interpretation1_seasonalityGeneral: '' has been replaced by 'Summer'
  paleo interpretation metadata: dust (LPD23d73becxxx): interpretation1_variable: 'P-E' has been replaced by 'effectivePrecipitation'
  paleo interpretation metadata: dust (LPD23d73becxxx): interpretation1_variableDetail: 'monsoon' has been replaced by '@surface'

version: 1.0.8
last version: 1.0.7
curator: nicholas
timestamp: 2023-02-13 23:42:50 UTC
changes:
  paleo column metadata: dust (LPD23d73becxxx): paleoData_notes: '' has been replaced by 'null'
  paleo column metadata: needsToBeChanged (WEB20f89efc): paleoData_notes: '""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "' has been replaced by '((( ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "; paleoData_variableName updated; paleoData_proxy updated ))) ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. " /// ""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "'

version: 1.0.7
last version: 1.0.6
curator: nicholas
timestamp: 2023-02-09 15:42:28 UTC
notes: Updated lipdverse database entry with a changed file.
changes:
  paleo column metadata: dust (LPD23d73becxxx): paleoData_proxy: 'mineral' has been replaced by ''
  paleo column metadata: uncertaintyLow (LPD87f9c656xxx): paleoData_notes: '' has been replaced by 'NA; paleoData_measurementMaterial has been standardized'
  paleo column metadata: uncertaintyLow (LPD87f9c656xxx): paleoData_variableName: 'UncertaintyDust0x5B0x250x5D0x28Minus0x29' has been replaced by 'uncertaintyLow'
  paleo column metadata: uncertaintyLow (LPD87f9c656xxx): paleoData_measurementMaterial: '' has been replaced by 'dust'
  paleo column metadata: uncertaintyHigh (LPDd737d3bdxxx): paleoData_notes: '' has been replaced by 'NA; paleoData_measurementMaterial has been standardized'
  paleo column metadata: uncertaintyHigh (LPDd737d3bdxxx): paleoData_variableName: 'UncertaintyDust0x5B0x250x5D0x28Plus0x29' has been replaced by 'uncertaintyHigh'
  paleo column metadata: uncertaintyHigh (LPDd737d3bdxxx): paleoData_measurementMaterial: '' has been replaced by 'dust'
  paleo column metadata: age (ROodVJ637bW): paleoData_notes: '' has been replaced by 'NA; paleoData_isPrimary has been standardized; paleoData_datum has been standardized'
  paleo column metadata: age (ROodVJ637bW): paleoData_units: 'BP' has been replaced by 'yr BP'
  paleo column metadata: age (ROodVJ637bW): paleoData_datum: '' has been replaced by '1950'
  paleo column metadata: age (ROodVJ637bW): paleoData_isPrimary: '' has been replaced by 'TRUE'
  paleo column metadata: year (RqBN5GXsFru): paleoData_notes: '' has been replaced by 'NA; paleoData_isPrimary has been standardized'
  paleo column metadata: year (RqBN5GXsFru): paleoData_units: 'AD' has been replaced by 'yr AD'
  paleo column metadata: year (RqBN5GXsFru): paleoData_isPrimary: '' has been replaced by 'TRUE'
  paleo column metadata: depth (RwsTzGhOpzR): paleoData_notes: '' has been replaced by 'NA; paleoData_isPrimary has been standardized'
  paleo column metadata: depth (RwsTzGhOpzR): paleoData_isPrimary: '' has been replaced by 'TRUE'
  paleo column metadata: needsToBeChanged (WEB20f89efc): paleoData_proxy: 'particle size' has been replaced by 'grain size'
  paleo column metadata: needsToBeChanged (WEB20f89efc): paleoData_variableName: 'log[EM3/(EM1+EM2)]' has been replaced by 'needsToBeChanged'
  paleo column metadata: age (WEB710c4615): paleoData_notes: '' has been replaced by 'NA; paleoData_isPrimary has been standardized; paleoData_datum has been standardized'
  paleo column metadata: age (WEB710c4615): paleoData_units: 'BP' has been replaced by 'yr BP'
  paleo column metadata: age (WEB710c4615): paleoData_datum: '' has been replaced by '1950'
  paleo column metadata: age (WEB710c4615): paleoData_isPrimary: '' has been replaced by 'TRUE'
  paleo column metadata: depth (WEBa1a18e15): paleoData_notes: '' has been replaced by 'NA; paleoData_isPrimary has been standardized'
  paleo column metadata: depth (WEBa1a18e15): paleoData_isPrimary: '' has been replaced by 'TRUE'
  paleo interpretation metadata: dust (LPD23d73becxxx): interpretation1_variable: 'M' has been replaced by 'P-E'
  paleo interpretation metadata: needsToBeChanged (WEB20f89efc): interpretation1_seasonality: '1,2,3,4,5,6,7,8,9,10,11,12' has been replaced by 'Annual'
  paleo interpretation metadata: needsToBeChanged (WEB20f89efc): interpretation1_variable: 'P' has been replaced by 'precipitation'

version: 1.0.6
last version: 1.0.5
curator: nicholas
timestamp: 2022-07-28 17:31:32 UTC
changes:
  geographic metadata: geo_elevation: '-2278' has been replaced by ''

version: 1.0.5
last version: 1.0.4
curator: nicholas
timestamp: 2022-07-15 23:01:26 UTC
changes:
  base metadata: originalDataUrl: '' has been replaced by 'https://doi.org/10.1594/PANGAEA.757457'
  paleo interpretation metadata: UncertaintyDust0x5B0x250x5D0x28Minus0x29 (LPD87f9c656xxx): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: UncertaintyDust0x5B0x250x5D0x28Plus0x29 (LPDd737d3bdxxx): interpretation1_scope: '' has been replaced by 'climate'

version: 1.0.4
last version: 1.0.3
curator: nicholas
timestamp: 2022-05-18 00:26:01 UTC
changes:
  base metadata: archiveType: 'Marine Sediment' has been replaced by 'MarineSediment'
  paleo column metadata: dust (LPD23d73becxxx): paleoData_mostRecentCompilations: '' has been replaced by 'HoloceneAbruptChange-0_10_0'
  paleo column metadata: log[EM3/(EM1+EM2)] (WEB20f89efc): paleoData_proxyLumps: '' has been replaced by 'biophysical'
  paleo column metadata: log[EM3/(EM1+EM2)] (WEB20f89efc): paleoData_proxyLumpsOriginal: '' has been replaced by 'particle size'
  paleo column metadata: log[EM3/(EM1+EM2)] (WEB20f89efc): paleoData_units: 'index' has been replaced by 'unitless'
  paleo column metadata: log[EM3/(EM1+EM2)] (WEB20f89efc): paleoData_unitsOriginal: '' has been replaced by 'index'
  paleo column metadata: age (WEB710c4615): paleoData_units: 'yr BP' has been replaced by 'BP'
  paleo column metadata: age (WEB710c4615): paleoData_unitsOriginal: '' has been replaced by 'yr BP'
  paleo interpretation metadata: UncertaintyDust0x5B0x250x5D0x28Minus0x29 (LPD87f9c656xxx): interpretation1_scope: 'climate' has been replaced by ''
  paleo interpretation metadata: UncertaintyDust0x5B0x250x5D0x28Plus0x29 (LPDd737d3bdxxx): interpretation1_scope: 'climate' has been replaced by ''
  paleo interpretation metadata: log[EM3/(EM1+EM2)] (WEB20f89efc): interpretation1_variableGroup: '' has been replaced by 'P'

version: 1.0.3
last version: 1.0.2
curator: nicholas
timestamp: 2021-11-17 02:06:40 UTC
changes:
  paleo column metadata: log[EM3/(EM1+EM2)] (WEB20f89efc): paleoData_proxy: '' has been replaced by 'particle size'
  paleo column metadata: log[EM3/(EM1+EM2)] (WEB20f89efc): paleoData_notes: '' has been replaced by '""e use the log ratio of the non-aeolian endmember EM3, and the aeolian endmembers EM1 and EM2 (log[EM3/(EM1+EM2)]) to indicate relative changes of the continental humidity and vegetation cover. "'
  paleo column metadata: log[EM3/(EM1+EM2)] (WEB20f89efc): paleoData_proxyDetail: '' has been replaced by 'end member'
  paleo column metadata: log[EM3/(EM1+EM2)] (WEB20f89efc): paleoData_proxyGeneral: '' has been replaced by 'biophysical'
  paleo column metadata: log[EM3/(EM1+EM2)] (WEB20f89efc): paleoData_QCCertification: '' has been replaced by 'CH'
  paleo interpretation metadata: log[EM3/(EM1+EM2)] (WEB20f89efc): interpretation1_seasonality: 'Annual' has been replaced by '1,2,3,4,5,6,7,8,9,10,11,12'
  paleo interpretation metadata: log[EM3/(EM1+EM2)] (WEB20f89efc): interpretation1_seasonalityGeneral: '' has been replaced by 'Annual'

version: 1.0.2
last version: 1.0.1
curator: nicholas
timestamp: 2021-10-05 21:39:32 UTC
changes:
  publication metadata: pub1_author: 'list(list(name = "Collins, J. A."), list(name = "Govin, A."), list(name = "Mulitza, S."), list(name = "Heslop, D."), list(name = "Zabel, M."), list(name = "Hartmann, J."), list(name = "Röhl, U."), list(name = "Wefer, G."))' has been replaced by 'Collins, J. A.'
  geographic metadata: geo_gcmdLocation: '' has been replaced by 'Atlantic Ocean>North Atlantic Ocean'
  paleo interpretation metadata: UncertaintyDust0x5B0x250x5D0x28Minus0x29 (LPD87f9c656xxx): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: UncertaintyDust0x5B0x250x5D0x28Plus0x29 (LPDd737d3bdxxx): interpretation1_scope: '' has been replaced by 'climate'

version: 1.0.1
last version: 1.0.0
curator: nick
timestamp: 2021-06-08 03:08:33 UTC
notes: Updated lipdverse database entry with a changed file.
changes:
  paleo data table: Column 'WEB20f89efc', with variable name 'log[EM3/(EM1+EM2)]', was added to the dataset
  paleo data table: Column 'WEB710c4615', with variable name 'age', was added to the dataset
  paleo data table: Column 'WEBa1a18e15', with variable name 'depth', was added to the dataset
  base metadata: archiveType: 'MarineSediment' has been replaced by 'Marine Sediment'
  publication metadata: pub1_year: '' has been replaced by '2013'
  publication metadata: pub1_abstract: '' has been replaced by ' Abstract. Relict dune fields that are found as far south as 14° N in the modern-day African Sahel are testament to equatorward expansions of the Sahara desert during the Late Pleistocene. However, the discontinuous nature of dune records means that abrupt millennial-timescale climate events are not always resolved. High-resolution marine core studies have identified Heinrich stadials as the dustiest periods of the last glacial in West Africa although the spatial evolution of dust export on millennial timescales has so far not been investigated. We use the major-element composition of four high-resolution marine sediment cores to reconstruct the spatial extent of Saharan-dust versus river-sediment input to the continental margin from West Africa over the last 60 ka. This allows us to map the position of the sediment composition corresponding to the Sahara–Sahel boundary. Our records indicate that the Sahara–Sahel boundary reached its most southerly position (13° N) during Heinrich stadials and hence suggest that these were the periods when the sand dunes formed at 14° N on the continent. Heinrich stadials are associated with cold North Atlantic sea surface temperatures which appear to have triggered abrupt increases of aridity and wind strength in the Sahel. Our study illustrates the influence of the Atlantic meridional overturning circulation on the position of the Sahara–Sahel boundary and on global atmospheric dust loading. '
  publication metadata: pub1_author: '' has been replaced by 'list(list(name = "Collins, J. A."), list(name = "Govin, A."), list(name = "Mulitza, S."), list(name = "Heslop, D."), list(name = "Zabel, M."), list(name = "Hartmann, J."), list(name = "Röhl, U."), list(name = "Wefer, G."))'
  publication metadata: pub1_issue: '' has been replaced by '3'
  publication metadata: pub1_journal: '' has been replaced by 'Climate of the Past'
  publication metadata: pub1_pages: '' has been replaced by '1181-1191'
  publication metadata: pub1_title: '' has been replaced by 'Abrupt shifts of the Sahara–Sahel boundary during Heinrich stadials'
  publication metadata: pub1_volume: '' has been replaced by '9'
  publication metadata: pub2_author: '' has been replaced by 'list(list(name = "Tjallingii, Rik"), list(name = "Claussen, Martin"), list(name = "Stuut, Jan-Berend W."), list(name = "Fohlmeister, Jens"), list(name = "Jahn, Alexandra"), list(name = "Bickert, Torsten"), list(name = "Lamy, Frank"), list(name = "Röhl, Ursula"))'
  publication metadata: pub2_doi: '' has been replaced by 'https://doi.org/10.1038/ngeo289'
  publication metadata: pub2_issue: '' has been replaced by '10'
  publication metadata: pub2_journal: '' has been replaced by 'Nature Geoscience'
  publication metadata: pub2_pages: '' has been replaced by '670-675'
  publication metadata: pub2_publisher: '' has been replaced by 'Springer Science and Business Media LLC'
  publication metadata: pub2_title: '' has been replaced by 'Coherent high- and low-latitude control of the northwest African hydrological balance'
  publication metadata: pub2_type: '' has been replaced by 'article-journal'
  publication metadata: pub2_volume: '' has been replaced by '1'
  publication metadata: pub2_year: '' has been replaced by '2008'
  paleo column metadata: dust (LPD23d73becxxx): paleoData_proxyGeneral: 'biophysical' has been replaced by ''
  paleo column metadata: UncertaintyDust0x5B0x250x5D0x28Minus0x29 (LPD87f9c656xxx): paleoData_units: '' has been replaced by 'unitless'
  paleo column metadata: UncertaintyDust0x5B0x250x5D0x28Plus0x29 (LPDd737d3bdxxx): paleoData_units: '' has been replaced by 'unitless'
  paleo interpretation metadata: dust (LPD23d73becxxx): interpretation1_seasonalityGeneral: 'Summer' has been replaced by ''
  paleo interpretation metadata: dust (LPD23d73becxxx): interpretation1_variable: 'DUST' has been replaced by 'M'
  paleo interpretation metadata: dust (LPD23d73becxxx): interpretation1_seasonality: '' has been replaced by 'Summer'
  paleo interpretation metadata: UncertaintyDust0x5B0x250x5D0x28Minus0x29 (LPD87f9c656xxx): interpretation1_scope: 'climate' has been replaced by ''
  paleo interpretation metadata: UncertaintyDust0x5B0x250x5D0x28Plus0x29 (LPDd737d3bdxxx): interpretation1_scope: 'climate' has been replaced by ''

version: 1.0.0
curator: nick
timestamp: 2021-06-08 03:08:33 UTC
notes: Added to lipdverse database.

Abrupt shifts of the Sahara–Sahel boundary during Heinrich stadials
author:
  name: Collins, J. A.
doi: 10.5194/cp-9-1181-2013
page: 1181-1191
pub data url: doi.org
publisher: Copernicus GmbH
type: article-journal
journal: Climate of the Past
volume: 9
issue: 3
pages: 1181-1191
abstract: Abstract. Relict dune fields that are found as far south as 14° N in the modern-day African Sahel are testament to equatorward expansions of the Sahara desert during the Late Pleistocene. However, the discontinuous nature of dune records means that abrupt millennial-timescale climate events are not always resolved. High-resolution marine core studies have identified Heinrich stadials as the dustiest periods of the last glacial in West Africa although the spatial evolution of dust export on millennial timescales has so far not been investigated. We use the major-element composition of four high-resolution marine sediment cores to reconstruct the spatial extent of Saharan-dust versus river-sediment input to the continental margin from West Africa over the last 60 ka. This allows us to map the position of the sediment composition corresponding to the Sahara–Sahel boundary. Our records indicate that the Sahara–Sahel boundary reached its most southerly position (13° N) during Heinrich stadials and hence suggest that these were the periods when the sand dunes formed at 14° N on the continent. Heinrich stadials are associated with cold North Atlantic sea surface temperatures which appear to have triggered abrupt increases of aridity and wind strength in the Sahel. Our study illustrates the influence of the Atlantic meridional overturning circulation on the position of the Sahara–Sahel boundary and on global atmospheric dust loading.
year: 2013

Coherent high- and low-latitude control of the northwest African hydrological balance
author:
  name: Tjallingii, Rik
author:
  name: Claussen, Martin
author:
  name: Stuut, Jan-Berend W.
author:
  name: Fohlmeister, Jens
author:
  name: Jahn, Alexandra
author:
  name: Bickert, Torsten
author:
  name: Lamy, Frank
author:
  name: Röhl, Ursula
pub data url: Manually Entered
doi: 10.1038/ngeo289
year: 2008
journal: Nature Geoscience
publisher: Springer Science and Business Media LLC
type: article-journal
volume: 1
issue: 10
pages: 670-675

longitude: -18.5817
latitude: 20.7517
elevation: -2278
geometry type: Point
site name: GeoB7920-2
sub region: unassigned
gcmd location: Atlantic Ocean>North Atlantic Ocean