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Run-off and snow cover change up until the end of the 21st century in the winter, according to the CLM A1B scenario
Left: relative difference in water available for runoff
Northern hemisphere snow-cover extent variation 1966-2005
The figure shows the snow-cover extent variation 1966 - 2005
Observed change in spring snow-cover duration 1970-2004
The map shows the observed change in spring snow-cover duration 1970 to 2004 covering the Northern Hemisphere
Observed changes in (a) global average surface temperature, (b) global average sea level and (c) northern hemispheric snow cover for March-April
All changes are relative to the period 19611990
Annual number of days with snow cover over European land areas 1961-1990 and projected change for 2071-2100
Note: Results are based on seven regional climate-model simulations.
Deviations of monthly snow cover extent over the northern hemisphere lands (including Greenland)
Note: Deviations are compared to a 30 year average
Deviations of seasonal snow cover (solid curve) versus deviations of temperature (dashed curve)
Note: Deviations are compared to a 30 year average.
Trend in snow cover extent over the Northern Hemisphere
Trend in snow cover extent over the Northern Hemisphere and in Europe
This figure shows satellite-derived time series of snow cover extent for the period 1967–2015 over the Northern Hemisphere (left) and Europe (right). The time series for the Northern Hemisphere is extended back to 1922 by including reconstructed historical estimates.
Trend in snow cover extent over the Northern Hemisphere and in Europe - Trend in snow cover extent in Europe
This figure shows satellite-derived time series of snow cover extent for the period 1967–2015 over the Northern Hemisphere (left) and Europe (right). The time series for the Northern Hemisphere is extended back to 1922 by including reconstructed historical estimates.
Trend in snow cover extent over the Northern Hemisphere and in Europe - Legend left
This figure shows satellite-derived time series of snow cover extent for the period 1967–2015 over the Northern Hemisphere (left) and Europe (right). The time series for the Northern Hemisphere is extended back to 1922 by including reconstructed historical estimates.
Trend in snow cover extent over the Northern Hemisphere and in Europe - Legend right
This figure shows satellite-derived time series of snow cover extent for the period 1967–2015 over the Northern Hemisphere (left) and Europe (right). The time series for the Northern Hemisphere is extended back to 1922 by including reconstructed historical estimates.
Trend in snow cover extent over the Northern Hemisphere and in Europe - Trend in snow cover extent in Europe (Copy 1)
This figure shows satellite-derived time series of snow cover extent for the period 1967–2015 over the Northern Hemisphere (left) and Europe (right). The time series for the Northern Hemisphere is extended back to 1922 by including reconstructed historical estimates.
Trend in autumn, winter and spring snow cover extent over the Northern Hemisphere
The figure shows the mean autumn (September, October, November), winter (December, January, February) and spring (March, April, May) snow cover extent over the Northern Hemisphere in 1967–2011 with linear trends.