posted 2008-10-7 _______________________________________________________________________________ North Pole Environmental Observatory NSF Grants OPP-9910305 and 0352754 2006-2007 Ice Temperature and Ice Mass Balance Buoy Data Deployed by Cold Regions Research and Engineering Laboratory (CRREL) and Pacific Marine Environmental Laboratory (PMEL) Directories/Files in this directory- NP2006-2007_IceBuoys_ReadMe.txt (this document) NP2006 CRREL Ice Buoys NP2006B_9115 IceTemp_NP2006B_9115.txt MetMass_NP2006B_9115.txt Position_NP2006B_9115.txt NP2007 CRREL Ice Buoys NP2007D_9114 IceTemp_NP2007D_9114.txt MetMass_NP2007D_9114.txt Position_NP2007D_9114.txt _______________________________________________________________________________ NPEO PMEL/CRREL Ice Temperature and Mass Balance Buoys for 2006 and 2007 The two Ice Mass Buoys reported here are the CRREL portion of the North Pole Environmental Observatory, and are parts of a campaign to monitor the ice and snow cover of the entire Arctic Ocean, detailed at http://www.crrel.usace.army.mil/sid/IMB/index.htm The IMB buoys themselves are described at http://www.crrel.usace.army.mil/sid/IMB/buoyinst.htm Each was deployed by PMEL at the NPEO deployment camp in April of their deployment year. NP2006B_9115 lasted until late January 2007; NP2007D_9114 survived until early January 2006, in both cases drifting toward Fram Strait east of Greenland. These buoys are complimented by PMEL Weather and Radiometer buoys. Because of the large temperature arrays presented by the IMB buoys and differing time stamps, their data is provided in three separate files. All contain header information ended by a line with a single character '#', followed by the data in tab-delimited ASCII columns. The left-most columns provide a time stamp for that data line. -- IceTemp files: Internal Ice Temperature (degrees C) from the air through the ice into the ocean beneath typically every 10 cm and every 2 hours. The header 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. To the right of the time stamp the remaining columns list thermistor-measured temperature at those depths. Missing data are flagged as -99.0. -- MetMass files: Ice thickness and snow depth measured with acoustic pingers, and atmospheric pressure and air temperature typically recorded every two hours. Missing data is flagged as -99.0. A detailed discussion of ice mass balance may be found on the CRREL Buoy Website. -- Position files: GPS position of the buoy. For further information concerning these data, please contact Dr. Don Perovich Donald.K.Perovich@usace.army.mil Dr. Jacqueline Richter-Menge Jacqueline.A.Richter-Menge@usace.army.mil Bruce Elder Bruce.C.Elder@usace.army.mil ERDC-CRREL-RS ( Snow and Ice Branch ) 72 Lyme Road Hanover, NH 03755-1290 or Dr. James E. Overland James.E.Overland@noaa.gov (206) 526-6795 Sigrid Salo sigrid.a.salo@noaa.gov (206) 526-6802 at Pacific Marine Environmental Laboratory (PMEL) NOAA R/PMEL, 7600 Sand Point Way N.E., Seattle, WA 98115-6349 For further information concerning NPEO, please contact Dr. James Morison morison@apl.washington.edu (206) 543-1394 Roger Andersen roger@apl.washington.edu (206) 543-1258 at Polar Science Center, Applied Physics Lab, University of Washington 1013 NE 40th, Seattle, WA 98105-6698 USA FAX (206) 616-3142