Identification

Title

Firth River Tree Ring Data [Anchukaitis, K.]

Alternative title(s)

106.460

Abstract

Northwestern North America has one of the highest rates of recent temperature increase in the world, but the putative "divergence problem" in dendroclimatology potentially limits the ability of tree-ring proxy data at high latitudes to provide long-term context for current anthropogenic change. Here, summer temperatures are reconstructed from a Picea glauca maximum latewood density (MXD) chronology that shows a stable relationship to regional temperatures and spans most of the last millennium at the Firth River in northeastern Alaska. The warmest epoch in the last nine centuries is estimated to have occurred during the late twentieth century, with average temperatures over the last 30 yr of the reconstruction developed for this study [1973-2002 in the Common Era (CE)] approximately 1.3° ± 0.4°C warmer than the long-term preindustrial mean (1100-1850 CE), a change associated with rapid increases in greenhouse gases. Prior to the late twentieth century, multidecadal temperature fluctuations covary broadly with changes in natural radiative forcing. The findings presented here emphasize that tree-ring proxies can provide reliable indicators of temperature variability even in a rapidly warming climate.

Resource type

dataset

Resource locator

https://data.eol.ucar.edu//dataset/106.460

protocol: https

description: Dataset homepage

Unique resource identifier

code

106.460

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

Resource Type

reference date

date type

revision

effective date

2014-10-16

Keyword set

keyword value

Field Surveys

Keyword set

keyword value

Land Based

Ecology

Paleoclimatology

Arctic

Biology

Keyword set

keyword value

EARTH SCIENCE > PALEOCLIMATE > LAND RECORDS > TREE RINGS

EARTH SCIENCE > BIOSPHERE > VEGETATION > TREE RINGS

EARTH SCIENCE > CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > BIOLOGICAL RECORDS > TREE RINGS

originating controlled vocabulary

title

Global Change Master Directory (GCMD)

reference date

date type

revision

effective date

2018-02-27

Geographic location

West bounding longitude

-141.63000

East bounding longitude

-141.63000

North bounding latitude

68.65000

South bounding latitude

68.65000

Temporal reference

Temporal extent

Begin position

1073-01-01T00:00:00Z

End position

2002-12-31T23:59:59Z

Dataset reference date

date type

publication

effective date

2015-05-26T19:24:03Z

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/

responsible party role

pointOfContact

Responsible party

contact position

Assistant Scientist

organisation name

Woods Hole Oceanographic Institution

full postal address

266 Woods Hole Rd. MS #23

Woods Hole

02543

United States

email address

kja@whoi.com

web address

http://www.whoi.edu/kja/

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/

responsible party role

pointOfContact

Metadata date

2024-02-07T22:42:23Z

Metadata language

eng; USA