CO04PFCH - v1.0.6

Dataset Id: xpHL3Wn9kbEaJRpviF9x

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L <- lipdR::readLipd("https://lipdverse.org/data/xpHL3Wn9kbEaJRpviF9x/1_0_6/CO04PFCH.lpd")

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iso2k-1_1_2

root

archiveType: Coral

originalDataUrl: https://www.ncdc.noaa.gov/paleo/study/1891

lipdVersion: 1.3

pub
pub1

author: list(name = "Pfeiffer, M., W.-C. Dullo, and A. Eisenhauer")

doi: 10.1016/j.yqres.2004.02.009

pub2

author: list(name = "Pfeiffer, M.")

geo

latitude: -5.43

longitude: 71.77

elevation: -1.8

siteName: Peros Banhos Atoll

PaleoData columns
year (yr AD)

TSid: MAT7a32fff5e7

variableName: year

units: yr AD

description: Year AD

interpretation
1

rank: NA

scope: climate

2

rank: NA

scope: climate

3

rank: NA

scope: climate

4

rank: NA

scope: climate

depth (cm)

TSid: MATd4f8849f7d

variableName: depth

units: cm

description: depth

interpretation
1

rank: NA

scope: climate

2

rank: NA

scope: climate

3

rank: NA

scope: climate

4

rank: NA

scope: climate

d18O (permil)

TSid: CO04PFCH02A

variableName: d18O

units: permil

description: carbonate

interpretation
1

basis: We find strong correlations between coral y18O, precipitation, and OLR, but also between coral y18O and SST

direction: decrease/increase

interpDirection: decrease/increase

scope: climate

variable: temperature

variableDetail: sea surface

variableGroup: temperature and salinity

2

scope: climate

3

scope: climate

4

basis: Core piM correlates more strongly with precipitation and OLR than COI-5 (Table 1). Note that years of high rainfall coincide with years of large negative coral y18O anomalies in the wet season (and high amplitudes of the annual cycle,

direction: positive

inferredMaterial: seawater

integrationTime: 2

integrationTimeBasis: A simple chronology based on these density bands in both corals temporally aligned anomalous 18O-depleted years precisely in the same years (e.g., 1972?1973, 1982? 1983). During these years, there were noted positive precipitation and/or SST anomalies. We then assigned February 15 to the most negative isotopic values. This is, on average, the wettest month. We then interpolated linearly between the anchor points to obtain bimonthly records of coral y18O.

integrationTimeUnits: month

mathematicalRelation: linear

rank: 1

scope: isotope

seasonality: subannual

variable: seawaterIsotope

variableGroup: EffectiveMoisture

variableGroupDirection: negative

variableGroupOriginal: d18O_seawater

coefficient: NA

fraction: NA

5

basis: However, over the entire time interval compared, maximum variations of mean summer SST are 1jC, which would account for approximately 0.20x in coral y18O (Juillet- Leclerc and Schmidt, 2001). Over the same period, mean summer coral y18O varies by as much as 0.7x (piM) and 0.4x (COI-5) (Fig. 4); i.e., the maximum SST contribution to the coral isotopic signal is 29% (piM) and 50% (COI-5).

direction: negative

inferredMaterial: seawater

integrationTime: 2

integrationTimeBasis: A simple chronology based on these density bands in both corals temporally aligned anomalous 18O-depleted years precisely in the same years (e.g., 1972?1973, 1982? 1983). During these years, there were noted positive precipitation and/or SST anomalies. We then assigned February 15 to the most negative isotopic values. This is, on average, the wettest month. We then interpolated linearly between the anchor points to obtain bimonthly records of coral y18O.

integrationTimeUnits: month

mathematicalRelation: linear

rank: 2

scope: isotope

variable: temperature

variableGroup: Temperature

variableGroupDirection: negative

variableGroupOriginal: T_water

coefficient: NA

fraction: NA

6

scope: isotope

coefficient: NA

fraction: NA

rank: NA

d18O (permil)

TSid: CO04PFCH01A

variableName: d18O

units: permil

description: carbonate

interpretation
1

basis: We find strong correlations between coral y18O, precipitation, and OLR, but also between coral y18O and SST

interpDirection: decrease/increase

scope: climate

variable: temperature

variableDetail: sea surface

variableGroup: temperature and salinity

2

scope: climate

3

scope: climate

4

basis: However, over the entire time interval compared, maximum variations of mean summer SST are 1jC, which would account for approximately 0.20x in coral y18O (Juillet- Leclerc and Schmidt, 2001). Over the same period, mean summer coral y18O varies by as much as 0.7x (piM) and 0.4x (COI-5) (Fig. 4); i.e., the maximum SST contribution to the coral isotopic signal is 29% (piM) and 50% (COI-5)

direction: decrease

mathematicalRelation: linear

rank: 2

scope: isotope

coefficient: NA

fraction: NA

5

basis: Core GIM correlates more strongly with precipitation and OLR than COI-5 (Table 1). Note that years of high rainfall coincide with years of large negative coral y18O anomalies in the wet season (and high amplitudes of the annual cycle,

direction: increase

mathematicalRelation: linear

rank: 1

scope: isotope

coefficient: NA

fraction: NA

6

scope: isotope

coefficient: NA

fraction: NA

rank: NA

ChronData columns
depthUTh (mm)

TSid: chron1

variableName: depthUTh

units: mm

description: midpoint depth of the subsample drilled for UTh age

depthtopPb (mm)

TSid: chron20

variableName: depthtopPb

units: mm

description: Depth at the top of the subsample for 210Pb analysis

depthbottomPb (mm)

TSid: chron21

variableName: depthbottomPb

units: mm

description: Depth at the bottom of the subsample for 210Pb analysis

depthtopCs (mm)

TSid: chron24

variableName: depthtopCs

units: mm

description: Depth at the top of the subsample for 137Cs analysis

depthbottomCs (mm)

TSid: chron25

variableName: depthbottomCs

units: mm

description: Depth at the bottom of the subsample for 137Cs analysis

SampleID (unitless)

TSid: chron2

variableName: SampleID

units: unitless

description: Sample ID for the UTh age measured

weight (mg)

TSid: chron3

variableName: weight

units: mg

description: Weight of powder analyzed for UTh age

U238 (ppb)

TSid: chron4

variableName: U238

units: ppb

description: 238U content of the subsample

U238_error (ppb)

TSid: chron5

variableName: U238_error

units: ppb

description: Analytical uncertainty of 238U

Th232 (ppt)

TSid: chron6

variableName: Th232

units: ppt

description: 232Th content of the subsample

Th232_error (ppt)

TSid: chron7

variableName: Th232_error

units: ppt

description: Analytical uncertainty of 232Th

d234U ((ratio))

TSid: chron8

variableName: d234U

units: (ratio)

description: d234U measured in the subsample

d234U_error (unitless)

TSid: chron9

variableName: d234U_error

units: unitless

description: Analytical uncertainty of d234U

Th230_U238activity (activity)

TSid: chron10

variableName: Th230_U238activity

units: activity

description: [230Th/238U] activity measured in the subsample

U_Thactivity_error (unitless)

TSid: chron11

variableName: U_Thactivity_error

units: unitless

description: Analytical uncertainty of 230Th238U activity

Th230_Th232ratio (ppm)

TSid: chron12

variableName: Th230_Th232ratio

units: ppm

description: [230Th/232Th] ratio in the subsample

Thratio_error (ppm)

TSid: chron13

variableName: Thratio_error

units: ppm

description: Analytical uncertainty of 230Th232Th ratio

AgeUncorrected (years ago)

TSid: chron14

variableName: AgeUncorrected

units: years ago

description: Uncorrected UTh age of the subsample

AgeUncorr_error (yrs)

TSid: chron15

variableName: AgeUncorr_error

units: yrs

description: Analytical uncertainty of Uncorrected Age

age (years ago)

TSid: chron16

variableName: age

units: years ago

description: Corrected UTh age of the subsample

AgeCorr_error (yrs)

TSid: chron17

variableName: AgeCorr_error

units: yrs

description: Uncertainty of Corrected Age (includes Th correction)

dU234initial ((ratio))

TSid: chron18

variableName: dU234initial

units: (ratio)

description: Calculated initial d234U in the subsample

dU234i_error (unitless)

TSid: chron19

variableName: dU234i_error

units: unitless

description: Analytical uncertainty of calculated d234U initial

Pb210excess (dpm/g)

TSid: chron22

variableName: Pb210excess

units: dpm/g

description: Lead210 excess measured in the subsample

Pb210_error (dpm/g)

TSid: chron23

variableName: Pb210_error

units: dpm/g

description: Analytical uncertainty of 210Pb excess

Cs137gamactivity (Bq/g)

TSid: chron26

variableName: Cs137gamactivity

units: Bq/g

description: Cesium137 gactivity measured in the subsample

Cs137_error (Bq/g)

TSid: chron27

variableName: Cs137_error

units: Bq/g

description: Analytical uncertainty of 137Cs gactivity

bandAge (yr CE)

TSid: chron28

variableName: bandAge

units: yr CE

description: Band counted age for the UTh sample

sampleType (unitless)

TSid: chron29

variableName: sampleType

units: unitless

description: Sample description. E.g., round plug, annual density band