Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A mound similar to pingo but much smaller size.

Etymologies

From Finnish palsa, from Northern Sami balsa. (Wiktionary)

Examples

  • Sample result: risk of total loss of palsa mires estimated to be 80% by 2100 under scenario A1B.

    Liveblogging the EGU – day 4 | Serendipity

  • Glacial activity has had a major influence on the development of the landscape including notable geological features such as deep canyons or kursu valleys with nearly vertical walls over 100 m in height cut by melt water, sandurs (outwash plains), boulder hollows, tundra polygons, U-valleys, glacial cirques and moraines, talus accumulations, drumlins, weathering phenomena and palsa bogs.

    Lapponian Area, Sweden

  • Freeze-thaw processes play a key role in the development and maintenance of these peatlands by shaping the surface of the landscape, and the types that are exclusive to the Arctic - most notably polygon mires and palsa mires - are associated with permafrost.

    Random graphic of the day: UNEP/GRID-Arendal Maps and Graphics Library

  • Need to do some downscaling to get useful results to input to an impact model to make decisions about adaptation. (here’s an early paper from this work) 14: 20: Next up isStefanFronzek’s talk onProbabilistic projections of climate change effects on sub-arctic palsa mires, in which I learnt that palsa mires are permanently frozen peat hummocks, which are sensitive to climate change, and if they melt are a major source of methane.

    Liveblogging the EGU – day 4 | Serendipity

  • Permafrost, however, exists in (very northern) Finland not only in palsa bogs and peat hummocks (=”pounu” in Finnish) but also on some fjeld top areas (=”paljakka” in Finnish).

    Predict future climate change! « Climate Audit

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