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Arctic Runoff Data Base (ARDB)

... a contribution to CliC and ArcticHYCOS

map of arctic stations Arctic Runoff Database: 2446 gauging stations in the arctic region (Status: April 2016)Arctic Runoff Database: 2446 gauging stations in the arctic region (Status: April 2016)

The Global Runoff Data Centre (GRDC) operates the Arctic Runoff Data Base (ARDB) to support programmes and projects of the United Nations and their special organisations in the Arctic region. The ARDB was a contribution to the ACSYS Data and Information Service (ADIS) and the Data and Information Service for CliC (DISC). The Arctic Climate System Study (ACSYS) was initiated to ascertain the role of the Arctic in global climate. In the framework of GRDC cooperation in UN-Programmes and Projects GRDC was involved in Arctic Climate System Study (ACSYS) (and is now involved in its follow-up programme Climate and Cryosphere, CliC).

Within the scope of the ACSYS Data and Information Service (ADIS) and the Data and Information Service for CliC (DISC) the Global Runoff Data Centre (GRDC) in Koblenz, Germany, assembled and maintained the Arctic Runoff Data Base (ARDB) as a data set in support of research conducted in the framework of the ACSYS programme. ACSYS ended in December 2003 and is continued within the Climate and Cryosphere Programme (CliC), which focuses on research of processes how the cryosphere interacts with the other components of the climate system. GRDC provides the services of the ARDB to research initiatives focused on the Polar regions like the International Polar Year 2007-2009.

The data set initially compiled for the ACSYS and CliC projects is now in a transition process conducted by the GRDC to built up the Arctic-HYCOS basic network. The network will comprise stations that are best suited to monitor and detect changes in the Arctic hydrological regime, specifically related to climate change. Currently 631 stations have been identifiedis to allow for the collection and sharing of hydrological data. The archived quality assured historical river discharge data (both mean daily and monthly) from these identified stations will be made available freely. The data for the majority of these stations can already be downloaded from this website.

Technically, the ARDB forms a subset of the Global Runoff Database (GRDB). GRDB currently holds river discharge time series data from a total of 2,409 gauging stations in the arctic region with earliest records from 1877 and an average time series length of 37 years, with a range from 1 to 123 years. 1,043 stations feature daily data, 2,188 stations monthly data. Access to ARDB follows GRDC's data policy of free and unrestricted but identified access and is limited to non-commercial applications.

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