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Hydrological and hydrochemical observation status in the pan-Arctic drainage basin
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology. (Hydrology)
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology. (Hydrology)
2009 (English)In: Polar Research, ISSN 0800-0395, Vol. 28, 327-338 p.Article in journal (Refereed) Published
Abstract [en]

In order to identify and understand the ongoing changes in the Arctic hydrological cycle, and the impacts on the Arctic Ocean, timely and open access to water and water-chemistry data is essential. By synthesizing and analysing all openly accessible water-discharge and water-quality data, we present an updated, quantitative picture of the status of observational data on hydrological and hydrochemical fluxes from the pan-Arctic drainage basin (PADB) to the ocean. We identify and compare the characteristics of monitored and unmonitored areas, and the differences between them, across the continents in the PADB. Results indicate significant gaps in monitoring data for water chemistry, in particular for high-latitude near-coastal areas. The differences in characteristics between monitored and unmonitored areas may bias assessments of hydrological and hydrochemical fluxes to the Arctic Ocean. The reliable identification and understanding of important biogeochemical processes in the PADB require extended monitoring, particularly in high-latitude permafrost ground, and more ready access to harmonized and integrated hydrochemical data.

Place, publisher, year, edition, pages
2009. Vol. 28, 327-338 p.
Keyword [en]
Discharge, hydrochemistry, hydrology, monitoring, pan-Arctic drainage basin, water chemistry
National Category
Oceanography, Hydrology, Water Resources Environmental Sciences
URN: urn:nbn:se:su:diva-31297DOI: 10.1111/j.1751-8369.2009.00126.xISI: 000272163900002OAI: diva2:275998
Available from: 2009-11-09 Created: 2009-11-09 Last updated: 2013-02-19Bibliographically approved
In thesis
1. Arctic Climate and Water Change: Information Relevance for Assessment and Adaptation
Open this publication in new window or tab >>Arctic Climate and Water Change: Information Relevance for Assessment and Adaptation
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The Arctic is subject to growing economic and political interest. Meanwhile, its water and climate systems are in rapid transformation. Relevant and accessible information about water and climate is therefore vital to detect, understand and adapt to the changes. This thesis investigates hydrological monitoring systems, climate model data, and our understanding of hydro-climatic change, for adaptation to water system changes in the Arctic. Results indicate a lack of harmonized water chemistry data, which may impede efforts to understand transport and origin of key waterborne constituents. Further development of monitoring cannot rely only on a reconciliation of observations and projections on where climate change will be the most severe, as they diverge in this regard. Climate model simulations of drainage basin temperature and precipitation have improved between two recent model generations, but large inaccuracies remain for precipitation projections. Late 20th-century discharge changes in major Arctic rivers generally show excess of water relative to precipitation changes. This indicates a possible contribution of stored water from permafrost or groundwater to sea level rise. The river contribution to the increasing Arctic Ocean freshwater inflow matches that of glaciers, which underlines the importance of considering all sources when assessing change. To provide adequate information for research and policy, Arctic hydrological and hydrochemical monitoring needs to be extended, better integrated and made more accessible. This especially applies to hydrochemistry monitoring, where a more complete set of monitored basins is motivated, including a general extension for the large unmonitored areas close to the Arctic Ocean. Improvements in climate model parameterizations are needed, in particular for precipitation projections. Finally, further water-focused data and modeling efforts are required to resolve the source of excess discharge in Arctic rivers.

Place, publisher, year, edition, pages
Stockholm: Department of Physical Geography and Quaternary Geology, Stockholm University, 2013. 16 p.
Dissertations from the Department of Physical Geography and Quaternary Geology, ISSN 1653-7211 ; 35
Hydrology, Monitoring, Arctic, Climate Change, Adaptatation
National Category
Oceanography, Hydrology, Water Resources Climate Research
Research subject
Physical Geography
urn:nbn:se:su:diva-86919 (URN)978-91-7447-638-5 (ISBN)
Public defence
2013-03-11, De Geersalen, Geovetenskapens hus, Svante Arrhenius väg 14, Stockholm, 13:00 (English)
Formas, 2007-1263Swedish Research Council, 2007-8393

At the time of doctoral defence the following papers were unpublished and had a status as follows: Paper 2: Accepted; Paper 4: Manuscript

Available from: 2013-02-14 Created: 2013-01-22 Last updated: 2013-02-12Bibliographically approved

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