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L <- lipdR::readLipd("https://lipdverse.org/data/obfZgz305YfAOStRWgxO/1_0_10/TR11SAHU00.lpd")Report an issue (include datasetId and version)
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iso2k-1_1_2
archiveType: Wood
originalDataUrl: https://www.ncdc.noaa.gov/paleo/study/22547
lipdVersion: 1.3
author: list(name = "Sano M.")
journal: The Holocene
volume: 22
pages: 809-817
title: Increasing aridity over the past 223 years in the Nepal Himalaya inferred from a tree-ring δ18O chronology
doi: 10.1177/0959683611430338
latitude: 29.85
longitude: 81.93
elevation: 3848
siteName: Humla, Nepal
country: Nepal
TSid: WEB9175515d
variableName: year
units: yr AD
description: calendar year in AD
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
TSid: WEB3638db18
variableName: d18O
units: permil
description: cellulose
basis: Instrumental calibration. A negative correlation between I´18O of precipitation and the amount of precipitation is observed in tropical regions including the Himalaya, which is termed as the a€˜amount effecta€™ (AraguA¡s-AraguA¡s et al., 1998; Dansgaard, 1964; Yadava and Ramesh, 2005).
direction: negative
fraction: 0.36
mathematicalRelation: linear
rank: 1
scope: climate
seasonality: Jun-Sep
variable: precipitation
variableDetail: Seasonal
variableGroup: P_amount, RH, T_air, P_E
basis: Our interpretation of the temperature signal in the δ18O chronology is that higher temperatures stimulate evaporation of soil water, resulting in a preferential loss of lighter isotopes in soil water, which in turn is taken up by trees.
direction: positive
fraction: 0.1225
mathematicalRelation: linear
rank: 1
scope: climate
seasonality: Jun-Sep
variable: temperature
variableDetail: surface temperature
variableGroup: Temperature
variableGroupDirection: negative
variableGroupOriginal: T
variableOriginal: temperature
basis: More specifically, lower atmospheric humidity causes higher vapor pressure gradient between leaf interstitial space and the atmosphere, resulting in a preferential loss of lighter isotopes and consequent enrichment in δ18O of leaf water.
direction: negative
fraction: 0.3844
mathematicalRelation: linear
rank: 1
scope: climate
seasonality: Jun-Sep
variable: effectivePrecipitation
variableDetail: surface relative humidity
variableGroup: relative humdity
basis: Since all the responses of tree-ring δ18O to the climatic factors (precipitation, relative humidity, and temperature) are related to dry–wet conditions, the PDSI is considered to be the most useful single variable to explain the variance of our δ18O chronology.
direction: negative
fraction: 0.5329
mathematicalRelation: linear
rank: 1
scope: climate
seasonality: Jun-Sep
variable: effectivePrecipitation
variableDetail: soil moisture stress
variableGroup: PDSI
basis: d18O of the leaf water takes part in synthesis of photosynthates.
direction: negative
inferredMaterial: leaf water
integrationTime: 1 year
mathematicalRelation: linear
rank: 1
scope: isotope
seasonality: Jun-Sep
seasonalityOriginal: June-September
variable: effectivePrecipitation
variableDetail: d18O of the leaf water
variableGroup: EffectiveMoisture
variableGroupDirection: negative
variableGroupOriginal: P_E
scope: isotope
scope: isotope
root
pub
pub1
geo
PaleoData columns
year (yr AD)
interpretation
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d18O (permil)
interpretation
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