Influence of vegetation on the ground thermal regime in continental Antarctica

Cannone, Nicoletta; Guglielmin, Mauro

doi:10.1016/j.geoderma.2009.04.007

Cited by 46 publications

(46 citation statements)

References 42 publications

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“…Our data and previous results obtained both in the maritime and continental Antarctica (Cannone et al, 2006;Guglielmin et al, 2008a;Cannone and Guglielmin, 2009) show that in these areas, characterized by the harshest climatic conditions for our planet, permafrost occurs under vegetated soils with an organic layer and, hence, is thermally more stable and resistant to climate change impacts than the permafrost developed under bare ground.…”

Section: Spatial and Temporal Variability Of Gst Gtr And Active Layersupporting

confidence: 82%

“…Shiklomanov and Nelson, 2002;Shur and Jorgenson, 2007 and related references) and in the Antarctic (Cannone et al, 2006;Cannone and Guglielmin, 2009). …”

Section: Spatial and Temporal Variability Of Gst Gtr And Active Layermentioning

confidence: 98%

“…The various insulating effects provided by different vegetation types on the Ground Surface Temperature (GST) were demonstrated for both the summer season and the entire year in both maritime (Cannone et al, 2006;Guglielmin et al, 2008a) and continental Antarctica (Cannone and Guglielmin, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Spatial and temporal variability of ground surface temperature and active layer thickness at the margin of maritime Antarctica, Signy Island

2012

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Section: Spatial and Temporal Variability Of Gst Gtr And Active Layersupporting

confidence: 82%

“…Shiklomanov and Nelson, 2002;Shur and Jorgenson, 2007 and related references) and in the Antarctic (Cannone et al, 2006;Cannone and Guglielmin, 2009). …”

Section: Spatial and Temporal Variability Of Gst Gtr And Active Layermentioning

confidence: 98%

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Spatial and temporal variability of ground surface temperature and active layer thickness at the margin of maritime Antarctica, Signy Island

2012

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“…Walter et al 2006;Zimov et al 2006;Mastepanov et al 2008), changes in vegetation composition (e.g. Cannone et al 2007;Cannone and Guglielmin 2009), increases in dissolved material in rivers and oceans (e.g. Benner 2004;Frey and McClelland 2009), are primarily related to the thermal regime of the surface and of the active layer during the thawing season.…”

Section: Active Layer and Permafrost Responses To Gst Changesmentioning

confidence: 99%

A permafrost warming in a cooling Antarctica?

Guglielmin

Cannone

2011

Climatic Change

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The magnitude and even direction of recent Antarctic climate change is still debated because the paucity of long and complete instrumental data records. While along Antarctic Peninsula a strong warming coupled with large retreat of glaciers occurred, in continental Antarctica a cooling was recently detected. Here, the first existing permafrost data set longer than 10 years recorded in continental Antarctica is presented. Since 1997 summer ground surface temperature showed a strong warming trend (0.31°C per year) although the air temperature was almost stable. The summer ground surface temperature increase seemed to be influenced mainly by the increase of the total summer radiation as confirmed also by the increase of the summer thawing degree days. In the same period the active layer exhibited a thickening trend (1 cm per year) comparable with the thickening rates observed in several Arctic locations where air warming occurred. At all the investigated depths permafrost exhibited an increase of mean annual temperature of approximately 0.1°C per year. The dichotomy between active layer thickness and air temperature trends can produce large unexepected and unmodelled impacts on ecosystems and CO 2 balance.

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“…Walter et al, 2006;Zimov et al, 2006;Mastepanov et al, 2008), changes in vegetation composition (e.g. Cannone et al, 2007;Cannone and Guglielmin, 2009), increases in dissolved material in rivers and oceans (e.g. Benner et al, 2004;Frey and McClelland, 2009).…”

Section: Introductionmentioning

confidence: 99%