NPEO PMEL/CRREL Ice Temperature and Mass Balance Buoys for 2000, 2001, and 2002
North Pole Environmental Observatory
NSF Grant OPP-9910305
2000-2003 Ice Temperature and Mass Balance Buoy Data
Deployed by Pacific Marine Environmental Laboratory (PMEL)
and Cold Regions Research and Engineering Laboratory (CRREL)
NPEO2000-2002_IceBuoys_ReadMe.txt (this document)
NP2000 CRREL Ice Buoys/
NP2001 CRREL Ice Buoys/
NP2002 CRREL Ice Buoys/
NPEO PMEL/CRREL Ice Temperature and Mass Balance Buoys for 2000, 2001, and 2002.
Because of the large temperature arrays presented by the CRREL buoys, their data
is provided in two or three separate files
- Internal Ice Temperature (C) from the air through the ice into the ocean beneath
typically every 10 cm and every 12 hours (.temp files) These files
contain two headers; one which identifies the buoy, followed by one which
lists the heights/depths at which temperature was measured. A depth of 0 is the
position of the top of the ice at the time of deployment, positive numbers are
heights above the surface of the ice, negative numbers are depths from the top
surface of the ice. The remaining lines of the file list the temperatures at
the depths/heights of the header, one line every 12 hours. Temperatures were
measured at 11:30 GMT and 23:30 GMT (in some years 12Z and 24Z) each day.
Missing data are marked '1.e35'.
- Position from GPS (.pos files) Positions were determined every
hour, and the file lists the position at 11:00 and 23:00.
In 2002, the GPS units failed in both ice buoys before the end of the drift.
The positions file included here 'NPEO2002_icebuoys.pos' is from the Weather station
buoy 22207 deployed on the same floe.
- Mass balance buoys also measured two distances with acoustic pingers (.snd files)
They determined the distance (m) from the snow and ice to a pinger mounted on
a post, and the distance from the bottom of the ice to an upward-looking
underwater pinger. Buoy 21078 at NPEO2002 is an axample.
These buoys were complimented by PMEL Weather and Radiometer buoys as well
as the JCAD Buoys deployed by JAMSTEC. The PMEL Buoys deployed at NPEO 2000
and 2001 were severely damaged in early ice breakups and did not collect a
NPEO 2002-2003 PMEL Argos Buoys-
22207 (PMEL Weather station)
20726 (PMEL Kipp&Zonen radiometers)
22204 (PMEL Eppley radiometers)
Profile plots and other analysis using these data may be viewed at the NPEO
For further information concerning NPEO, please contact
Dr. James Morison firstname.lastname@example.org (206) 543-1394
Roger Andersen email@example.com (206) 543-1258
Polar Science Center, Applied Physics Lab, University of Washington
1013 NE 40th, Seattle, WA 98105-6698 USA FAX (206) 616-3142
For further information concerning these data, please contact
Dr. James E. Overland James.E.Overland@noaa.gov (206) 526-6795
Sigrid Salo firstname.lastname@example.org (206) 526-6802
Pacific Marine Environmental Laboratory (PMEL)
NOAA R/PMEL, 7600 Sand Point Way N.E., Seattle, WA 98115-6349
Dr. Don Perovich Donald.K.Perovich@erdc.usace.army.mil
Dr. Jacqueline Richter-Menge Jacqueline.A.Richter-Menge@erdc.usace.army.mil
Bruce Elder Bruce.C.Elder@erdc.usace.army.mil
ERDC-CRREL-RS ( Snow and Ice Branch ), 72 Lyme Road, Hanover, NH 03755-1290