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Sea level rise due to the melting of mountain and subpolar glaciers Sea level rise due to the melting of mountain and subpolar glaciers
Oceans change as a result of the impact of climatic variability on glaciers and ice caps that further contributes to fluctuation sin sea leve. Observational and modelling studies of glaciers and ice caps indicate an average sea level increase of 0.2 to 0.4 mm/yr during the 20th century. Since the Last Glacial Maximum about 20,000 years ago, sea level has risen by over 120 m at locations far from present and former ice sheets, as a result of los...
17 May 2005 - by UNEP/GRID-Arendal
Estimated Loss of Plant Species 2000-2005 Estimated Loss of Plant Species 2000-2005
The present environmental situation – heavily influenced by climate change – could lead to a massive destruction of forests and the extinction of countless species. For example, modelling focusing on the Amazon region has indicated that 43 per cent of 193 representative plant species could become nonviable by the year 2095 due to the fact that changes in climate will have fundamentally altered the composition of species habitats (Miles...
20 Jun 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
Human Impact - Europe and the Near East Human Impact - Europe and the Near East
The assessment and modelling of current impact on wilderness show that there are few areas in Europe proper that have seen little human impact - it is all broken up by roads thus lowering the value of habitats primarily for big mammals. Areas with wilderness qualities can be found in the Arctic and further East in this analysis.
26 Jan 2006 - by Torstein Olsen and Einar Lieng, Statens Kartverk (for UNEP/GRID-Arendal)
Potential impact of sea-level rise on Bangladesh Potential impact of sea-level rise on Bangladesh
Bangladesh, one of the world's poorest nations is also the country most vulnerable to sea-level rise. The population is already severely affected by storm surges. Catastrophic events in the past have caused damage up to 100 km inland. It is hard to imagine to what extent these catastrophes would be with accelerated sea-level rise. Digital terrain modelling techniques have been used to display the Bangladesh scenarios. A three dimensional view o...
12 Feb 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
How much sea ice will be left in 2050? How much sea ice will be left in 2050?
Climate simulations suggest continued rapid loss of Arctic sea-ice. The observations of indigenous peoples also indicate unprecedented change. The loss of the Arctic sea-ice will have vast impacts on climate, livelihoods and biodiversity.
21 Mar 2006 - by Author: K. Dixon & H. Vahlenkamp, October 1998, December 1999, February 2004; Layout: Petter Sevaldsen (UNEP/GRID-Arendal)
Glacier volume change forecasts Glacier volume change forecasts
Oerlemans et al. (1998) conducted modelling experiments for a sample of 12 glaciers and ice caps, to determine volume changes under a range of temperature and precipitation forcings (Fig. 3). The range of glacier response is very wide, so a key issue is fnding ways to upscale the results of modelling this tiny sample of glaciers to large regions. Figure 2 shows the results of two alternative weighting procedures. Although the absolute values o...
06 Dec 2010 - by Riccardo Pravettoni