Identification

Title

Ayr Lake, Baffin Island 570Yr Leaf Wax Hydrogen Isotope and Varve Data

Alternative title(s)

106.461

Abstract

A multiproxy paleoclimate record is presented using leaf wax hydrogen isotopes (d2Hwax) and varve thickness from Arctic proglacial lake sediments. Also provided is one of the first evaluations of the utility of d2Hwax as a paleoclimate proxy in Arctic proglacial lakes. Comparison of varve thickness and d2Hwax at sub-decadal resolution from 1948 to 2004 AD, and at sub-centennial resolution from 1450 to 2004 AD is made. Varve thickness and d2Hwax both contain large interannual variability and are anti-correlated during the late twentieth century, suggesting that both proxies respond rapidly, but by different mechanisms, to catchment-scale forcings. At longer time scales, varve thickness exhibits a strong response to Little Ice Age cooling (1661-1827 AD in this record) but does not show evidence for twentieth century warming recorded throughout the Arctic. d2Hwax does record regional- scale temperature changes, with more 2H-depleted values during the Little Ice Age and an abrupt change to more 2H-enriched values in the twentieth century. This corresponds well with a recent Arctic-wide temperature reconstruction in which the seventeenth century is the coldest interval, and the twentieth century is the warmest interval. The results suggest that d2Hwax is a promising proxy that can be applied at high resolution in proglacial Arctic lakes.

Resource type

dataset

Resource locator

https://data.eol.ucar.edu//dataset/106.461

protocol: https

name: Ayr Lake, Baffin Island 570Yr Leaf Wax Hydrogen Isotope and Varve Data homepage

description: Dataset homepage

Unique resource identifier

code

106.461

codeSpace

Dataset language

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

climatologyMeteorologyAtmosphere

Keywords

Keyword set

keyword value

dataset

originating controlled vocabulary

title

reference date

date type

revision

effective date

2014-10-16

Keyword set

keyword value

Field Surveys

Keyword set

keyword value

Ecology

Sediment

Arctic

Biology

Keyword set

keyword value

EARTH SCIENCE > CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > OCEAN/LAKE RECORDS > ISOTOPES

EARTH SCIENCE > CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > OCEAN/LAKE RECORDS > SEDIMENTS

originating controlled vocabulary

title

reference date

date type

revision

effective date

2018-02-27

Geographic location

West bounding longitude

-70.08600

East bounding longitude

-70.08600

North bounding latitude

70.45900

South bounding latitude

70.45900

Temporal reference

Temporal extent

Begin position

1433-01-01T00:00:00Z

End position

2004-12-31T23:59:59Z

Dataset reference date

date type

publication

effective date

2015-05-26T20:25:51Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

none

Limitations on public access

none

Responsible organisations

Responsible party

contact position

EOL Data Support

organisation name

UCAR/NCAR - Earth Observing Laboratory

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

https://data.eol.ucar.edu/

name: homepage

responsible party role

pointOfContact

Responsible party

organisation name

SUNY at Buffalo

email address

jbriner@buffalo.edu

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

contact position

EOL Data Support

organisation name

UCAR/NCAR - Earth Observing Laboratory

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

https://data.eol.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata date

2024-02-07T22:42:23Z

Metadata language