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Greenland Climate Network (GC-Net)
Automatic Weather Stations (AWS)
As of the 1999 field season, 18 automatic weather stations (AWS) are collecting climate information on Greenland's ice sheet. Each AWS is equipped with a number of instruments to sample the following:
Hourly average data are transmitted via a satellite link (GOES or ARGOS) throughout the year. In addition, measurements are stored in solid state memory. The system is powered with two 100 Ah batteries, charged by a 10 or 20 W solar panel. The satellite data-link is powered by two separate 100 Ah batteries connected to a 20 W solar panel. This setup guarantees continuous data recordings and storage, even in the case of satellite transmission failure. The expected lifetime of the instrumentation is 5 years.
Current GC-Net Transmissions
PARCA GC-Net Automated Weather Stations (AWS) are equipped with communication satellite transmitters that enable near-real time monitoring of weather conditions on the Greenland ice sheet. Transmission latency is as short as 4 minutes, typically 1-2 hours, and occasionally as long as 48 hours. See graphs of the most recent transmissions in the links listed on the right side of this page.
For more information on the GC-NET see:
Steffen, K., J. E. Box, and W. Abdalati, 1996 "Greenland Climate Network: GC-Net", in Colbeck, S. C. Ed. CRREL 96-27 Special Report on Glaciers, Ice Sheets and Volcanoes, trib. to M. Meier, pp. 98-103.
Dr. Konrad Steffen is the principal investigator of this project.
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