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Collection: International Polar Year (IPY) educational posters

International Polar Year (IPY) educational posters
International Polar Year (IPY) educational posters
There have been five posters prepared, with high-school age students as the main target groups. Each poster stands on its own but is recognizable as part of the series through the common design template. All the posters includes illustrations and text highlighting the human dimension of the poster theme - photos with people and text showing ho ...
Available online at: http://www.grida.no/polar/ipy/2839.aspx
Greenland, showing rates of surface-elevation change between the late 1990s and 2003
Mass-balance estimates for Greenland show thickening at high elevations since the early 1990s at rates that increased to about 4 cm per year after 2000, consistent with expectations of increasing snowfall in a warming cl...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Ecoregions in Antarctica
Antarctica represents a very unique and special case on our planet. With the richness of the Southern Ocean, the coasts and the Southern islands have relatively high biodiversity and biomass in the form of numerous sea b...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Major research stations in Antarctica
Antarctica is interesting for many types of researchers. For example, glaciologists study the ice and snow, while oceanographers look at the oceans. The ice, snow and oceans affect the global climate and are presently ch...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Historical trends in carbon dioxide concentrations and temperature
The more recent history, from the middle ages and up until now, show increasing temperatures, rising as the world emerged from the Little Ice Age (LIA), around 1850. With the industrial era, human activities have at the ...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Major global bird migration routes to the Arctic
Bird species that migrate to the Arctic coasts and wetlands arrive from nearly every corner of the planet. During the summer, the sun never or nearly never sets, resulting in a short but intensive breeding season when mi...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Temperature increases in the Antarctic due to climate change, 2090 (NCAR-CCM3, SRES A2 experiment)
Climate change, due to increased concentrations of greenhouse gases in the atmosphere, has not lead as clear changes in the Antarctic as in the Arctic. Some of the ice shelves of the Antarctic peninsula have split up and...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Population distribution in the circumpolar Arctic, by country (including indigenous population)
The Arctic represents one of the most desolate and sparsely populated areas in the World, with few economic opporunities and inhostile climate. This map - based on the Arctic Human Development Report (AHDR) definition of...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Climate change - ice and snow and the albedo effect
Changes in the polar regions can cause more warming in the entire planet earth system through feedback effects. One such effect is the reduction of ice and snow due to warmer temperatures. When the white and gray snow an...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Northern Sea Route and the Northwest Passage compared with currently used shipping routes
Climate models project that summer sea ice in the Arctic Basin will retreat further and further away from most Arctic landmasses, opening new shipping routes and extending the navigation season in the Northern Sea Route ...
01 Oct 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Population and main oil and gas production areas in the Arctic
The Arctic represents one of the least populated areas in the world, with only sparse settlements and very few large cities and towns - in comparison with e.g. continental Europe. The largest cities are in Northwest Russ...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Vegetation density/distribution in the high Arctic
The current vegetation density and distribution in the high Arctic can be calculated using satellite images. The vegetation index, 'greenness' (NDVI) represents a benchmark of the presence and ratio of photosynthesis. In...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Arctic, topography and bathymetry (topographic map)
The Arctic is extremely diverse in terms of landscapes, varying from pack and drift ice to rugged shores, flat coastal plains, rolling hills and mountains surpassing 6000 metres above sea level (Denali, 6,194 m asl, in s...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Cold places on the Southern Continent
Antarctica is the coldest, driest and windiest continent on Earth. This graph shows the annual temperatures and seasonal variation at three locations in Antarctica - the research bases Bernardo O'Higgins (Chile - on the ...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Antarctica, topography and bathymetry (topographic map)
Antarctic is the fifth largest continent of the world at 14 million square kilometres and is covered by a permanent continental ice sheet. The ice is distributed in two major ice sheets, the East Antarctic and the West A...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Increases in annual temperatures for a recent five-year period, relative to 1951-1980
Warming is widespread, generally greater over land than over oceans, and the largest gains in temperatures for the planet are over the North American Arctic, north central Siberia, and on the Antarctic Peninsula. These r...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Protected areas, Arctic and Antarctic
Protected areas are very important for conserving biodiversity. In these areas, human activities are managed to achieve specific conservation goals, for example, to protect a certain species or to conserve a representati...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Arctic sea ice minimum extent in September 1982 and 2008
The red line indicates the median minimum extent of the ice cover for the period 1979–2000. This figure compares the Arctic sea ice extent in September for the years 1982 (the record maximum since 1979) and 2008. The ice...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Extreme days and nights - daylight variation in the Arctic: Reykjavik, Murmansk and Alert
The Arctic and Antarctic have long nights in the winter and long days in the summer. Above the Arctic Circle (66 °N), there is at least one day with no sun– polar night, and one day with no night— midnight sun. This grap...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Projected temperature increases in the Arctic due to climate change, 2090 (NCAR-CCM3, SRES A2 experiment)
Climate change, due to increased concentrations of greenhouse gases in the atmosphere, has lead to increased temperatures and large scale changes in the Arctic. The Arctic sea ice is decreasing, permafrost thawing and th...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Cryosphere - winter seasons, Northern and Southern Hemispheres
Seasonal variation in the extent of ice and snow cover is greatest in the Northern Hemisphere. Imagine the Earth with white caps on the top and bottom. The top cap increases by a factor of six from summer to winter, whil...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
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