Earth System Science Data Discussions www.earth-syst-sci-data-discuss.net 1866-3591 3 1 2010 10.5194/essdd-3-27-2010 http://www.earth-syst-sci-data-discuss.net/3/27/2010/ http://www.earth-syst-sci-data-discuss.net/3/27/2010/essdd-3-27-2010.html http://www.earth-syst-sci-data-discuss.net/3/27/2010/essdd-3-27-2010.pdf 27 54 2010-02-23 NORPERM, the Norwegian Permafrost Database – a TSP NORWAY IPY legacy H. Juliussen havard.juliussen@unis.no H. H. Christiansen G. S. Strand S. Iversen K. Midttømme J. S. Rønning The University Centre in Svalbard, Longyearbyen, Svalbard, Norway Department of Geosciences, University of Oslo, Oslo, Norway Geological Survey of Norway, Trondheim, Norway Norwegian University of Science and Technology, Trondheim, Norway Administrator of NORPERM now at: Norwegian Geotechnical Institute, Oslo/Trondheim, Norway NORPERM – The Norwegian Permafrost Database was developed at the Geological Survey of Norway during the International Polar Year (IPY) 2007–2009 as the main data legacy of the IPY research project <i>Permafrost Observatory Project: A Contribution to the Thermal State of Permafrost in Norway and Svalbard</i> (TSP NORWAY). This paper describes the structural and technical design of NORPERM. NORPERM follows the IPY data policy of open, free, full and timely release of IPY data, and the borehole metadata description follows the Global Terrestrial Network for Permafrost (GTN-P) standard. The ground temperature data infrastructure in Norway and Svalbard is also presented, focussing on the TSP NORWAY permafrost observatory installations in the <i>North Scandinavian Permafrost Observatory</i> and <i>Nordenskiöld Land Permafrost Observatory</i>, as the data providers for NORPERM. Further developments of the database, possibly towards a regional database for the Nordic area, are also discussed. <br><br> The purpose of NORPERM is to store ground temperature data safely and in a standard format for use in future research. NORPERM stores temperature time series from various depths in boreholes and from the air, snow cover, ground-surface or upper ground layer recorded by miniature temperature data-loggers, and temperature profiles with depth in boreholes obtained by occasional manual logging. 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