Identification

Title

Albedo of ice types in northeast Greenland's ablation zone

Alternative title(s)

106.334

Abstract

Ice types, albedos and impurity content are characterized for the ablation zone of the Greenland ice sheet in Kronprinz Christians Land (808 N, 248 W). Along this ice margin the width of the ablation zone is only about 8 km. The emergence and melting of old ice in the ablation zone creates a surface layer of dust that was originally deposited with snowfall high on the ice sheet. This debris cover is augmented by locally derived wind-blown sediment. Subsequently, the surface dust particles often aggregate together to form centimetre-scale clumps that melt into the ice, creating cryoconite holes. The debris in the cryoconite holes becomes hidden from sunlight, raising the area-averaged albedo relative to surfaces with uniform debris cover. Spectral and broadband albedos were obtained for snow, ice hummocks, debris-covered ice, cryoconite-studded ice and barren tundra surfaces. Broadband ice albedos varied from 0.2 (for ice with heavy loading of uniform debris) to 0.6 (for ice hummocks with cryoconite holes). The cryoconite material itself has albedo 0.1 when wet.

Resource type

dataset

Resource locator

https://data.eol.ucar.edu//dataset/106.334

protocol: https

name: Albedo of ice types in northeast Greenland's ablation zone homepage

description: Dataset homepage

Unique resource identifier

code

106.334

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

Snow and Land Ice

Optics

Sediment

Arctic

Radiation

Keyword set

keyword value

EARTH SCIENCE > LAND SURFACE > SURFACE RADIATIVE PROPERTIES > ALBEDO

EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > ALBEDO

EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SNOW/ICE > ALBEDO

EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > ALBEDO

originating controlled vocabulary

title

reference date

date type

revision

effective date

2018-02-27

Geographic location

West bounding longitude

-24.50000

East bounding longitude

-24.01700

North bounding latitude

79.93300

South bounding latitude

79.90000

Temporal reference

Temporal extent

Begin position

2006-08-02T00:00:00Z

End position

2006-08-10T00:00:00Z

Dataset reference date

date type

publication

effective date

2011-11-02T16:00:17Z

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

University of Washington, Department of Atmospheric Sciences

full postal address

Department of Atmospheric Sciences University of Washington, Box 351640

Seattle

98195

USA

telephone number

206-543-7230

email address

sgw@uw.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

2024-02-07T22:51:46Z

Metadata language