Meteorological observations 1998 at the arctic station, Qeqertarsuaq (69°15'N), Central West Greenland/Active layer monitoring in two Greenlandic permafrost areas

An automatic meteorological station has been operating at the Arctic Station (69°15'N, 53°31'W) in West Greenland since 1990. This paper summarises meteorological parameters during 1998, including snow cover, ground temperatures and active layer development, and presents comments on the local permafrost thickness. Abstract Active layer monitoring in Greenland was started in 1996 and 1997, and forms part of the Circumpolar Active Layer Monitoring (CALM) Network of the International Permafrost Association (IPA). The results of the first years of this monitoring of thaw progression and maximum active layer thickness in two Greenlandic permafrost areas are presented. Two sites are in the continuous permafrost zone at Zackenberg in NE Greenland (74 °N), and one at Disko Island in W Greenland (69 °N), at the border between discontinuous and continuous permafrost. The data collected at Zackenberg demonstrate interannual variation in the timing of thaw progression in the monitoring grid holding a seasonal snowpatch, while there is less variation in the horizontal grid without a snowpatch. The maximum active layer thickness for the two Zackenberg grids is more or less consistent for the first three years with averages from 58 to 66 cm in mid and late August. At Disko the active layer reached 71 cm in mid August 1998. Spatially the distribution of the maximum, annual active layer thickness within the grids is concordant

Active layer · Arctic · Atmospheric sciences · Circumpolar star · Climatology · Elevation (ballistics · Geography · Geomorphology · Layer (electronics · Permafrost · Physical geography · Snow · Snow cover · Arctic and Antarctic ice dynamics · Climate change and permafrost · Cryospheric studies and observations · Environmental Science · Geology · Oceanography

• The circumpolar active layer monitoring (calm) program

  J Brown, Kenneth M Hinkel et al.•Polar Geography•2000

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• Role of landscape parameters in riverine run-off, and sediment and organic matter yield on Disko Island, West Greenland

  Morten Rasch, Niels Nielsen et al.•Geografisk Tidsskrift-Danish…•2003

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• Meteorological Observations in 2000 at the Arctic Station, Qeqertarsuaq (69°15'N), Central West Greenland

  Niels Nielsen, Ole Humlum et al.•Geografisk Tidsskrift-Danish…•2001

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• Meteorological observations 1998 at the arctic station, Qeqertarsuaq (69°15'N), Central West Greenland/Active layer monitoring in two Greenlandic permafrost areas

  Ole Humlum, Birger Ulf Hansen et al.•Geografisk Tidsskrift-Danish…•1999

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• Meteorological observations 1998 at the arctic station, Qeqertarsuaq (69°15'N), Central West Greenland/Active layer monitoring in two Greenlandic permafrost areas

  Ole Humlum, Birger Ulf Hansen et al.•Geografisk Tidsskrift-Danish…•1999

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