CLIMATE, SNOW AND HYDROLOGY IN TUNDRA ECOSYSTEMS: PATTERNS, PROCESSES, FEEDBACKS AND SCALING ISSUES.

Updated 2003-04-22

Arctic tundra landscapes exist as a mosaic of vegetation (graminoid-, dwarf-shrub and lichen-dominated) related to topography, soil type and hydrology (wet, mesic, dry tundra). The key driver of this fine-scale mosaic is the pattern, depth and duration of snow-lie. Changes in snow-lie within the landscape, resulting from climate change, may alter the vegetation and soils of the tundra regions that modulate fluxes of trace gases (CO2 and CH4, H2O) between tundra and atmosphere. Current models do not take account of this. Our key objective is therefore to improve quantification of seasonal trace gas flux and energy balance between surface and atmosphere at the landscape scale in high latitude tundra, and the potential feedbacks to radiative forcing of climate, taking into account this fine-scale landscape mosaic mediated by the dynamics of winter snow cover and its duration.

Time frame

Status
Ongoing
Project time span
2002 - 2004
Data collection
not specified
Data processing
not specified
Data reporting
not specified

Contact information

Contact person
ROBERT BAXTER
Address
University of Durham South Road Durham United Kingdom

Parameters and Media

Not specified

Geography

Regions studied
Abisko Scientific Research Station

Data availability

Samples/specimens archived in specimen banks?
No

Methods & Procedures

Not specified

Additional Information

Is this a bi- AND multi-lateral project (i.e. a project involving cooperation between different countries)?
No
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