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Data Set ID:
NSIDC-0352

Iceberg Firn Temperatures, Antarctica, Version 1

Since November of 2005, 12 thermistors were planted in the upper 2.5 meters of the firn on iceberg C16, Antarctica. Temperature data are collected every 20 minutes and are transmitted via ARGOS satellite relay. Data are intended to provide a view of how firn temperatures change as an iceberg moves north into warmer climate.

Geographic Coverage

Parameter(s):
  • Glaciers/Ice Sheets > Firn
  • Glaciers/Ice Sheets > Glaciers
  • Glaciers/Ice Sheets
  • Glaciers/Ice Sheets > Icebergs
  • Sea Ice > Icebergs
  • Glaciers/Ice Sheets > Ice Sheets
  • Snow/Ice
Spatial Coverage:
  • N: -78, S: -78, E: 168, W: 168

Spatial Resolution: Not Specified
Temporal Coverage:
  • 8 November 2005 to 30 June 2008
Temporal Resolution: Not specified
Data Format(s):
  • ASCII Text
Platform(s) GROUND STATIONS
Sensor(s): AWS, THERMISTORS
Version: V1
Data Contributor(s): Douglas MacAyeal, Olga Sergienko, Jonathan Thom
Please contact the data provider for the correct Data Citation for this data set.

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Detailed Data Description

Format

comma-delimited ASCII format

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Volume

2.2 megabytes

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Spatial Coverage

Southernmost Latitude: 78° S 
Northernmost Latitude: 78° S 
Westernmost Longitude: 168° E 
Easternmost Longitude: 168° E

Spatial Resolution

Variable, 12 thermistors over 2.5 meters of firn depth

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Temporal Coverage

Variable, approximately one measurement per hour

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Parameter or Variable

Parameters include iceberg drift, iceberg latitude and longitude, iceberg weather (AWS), ice shelf motion, ice shelf surface temperature, ice shelf weather, iceberg snow accumulation.

Sample Data Record

Year, month, day, hour, minute, second, temperatures at 12 depths, starting with the shallowest (check by seeing which has more variability due to surface temperature fluctuation).

Depth in meters
0.0700
0.1500
0.2200
0.3500
0.4500
0.5700
0.7000
0.8500
1.1000
1.4000
1.9000
2.5000
year
month
day
hour
minute
second
0.0700
0.1500
0.2200
2005
11
8
22
47
41
-1.242000e+01
-1.317000e+01
-1.311000e+01
0.3500
0.4500
0.5700
0.7000
0.8500
1.1000
1.4000
1.9000
2.5000
-1.333000e+01
-1.375000e+01
-1.366000e+01
-1.419000e+01
-1.480000e+01
-1.580000e+01
-1.685000e+01
-1.854000e+01
-2.352000e+01
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Software and Tools

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Data Acquisition and Processing

Data Acquisition Methods

Vertical spacing was maintained by placing the sensors in a 2 by 4 wood lumber post that was buried in a snow pit that was refilled with milled surface snow.

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Sensor or Instrument Description

Campbell Scientific 107-L thermistors.

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References and Related Publications

Contacts and Acknowledgments

Douglas MacAyeal
Department of Geophysical Sciences
University of Chicago
5734 S. Ellis Ave. 
HGS 413
Chicago, Illinois 60637 USA

Olga Sergienko 
Department of Geology 
Portland State University 
Portlan, Oregon, 97201 USA

Jonathan Thom 
Space Science and Engineering Center 
University of Wisconsin- Madison 
Madison, Wisconsin 53706 USA

Acknowledgments: 

This research was supported by National Science Foundation (NSF) Office of Polar Programs (OPP) grant 0229546 awarded to D. MacAyeal.

Document Information

Document Creation Date

November 2008

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