Now showing items 1-11 of 11

    • Global Outlook for Ice and Snow: Chapter 1 - Highlights 

      United Nations Environment Programme; United Nations Environment Programme (United Nations Environment Programme, 2007)
      Ice and snow are important components of the Earth’s climate system and are particularly sensitive to global warming. Over the last few decades the amount of ice and snow, especially in the Northern Hemisphere, has decreased ...
    • Global Outlook for Ice and Snow: Chapter 2 - Why are ice and snow important to us? 

      United Nations Environment Programme (2007)
      This report demonstrates how we are affected by ice and snow, whether we live in the northern regions or tropical climates or in between. Ice and snow are important components of the Earth’s climate system and are particularly ...
    • Global Outlook for Ice and Snow: Chapter 3 - Why are ice and snow changing? 

      United Nations Environment Programme; United Nations Environment Programme (United Nations Environment Programme, 2007)
      Changes in ice and snow are influenced by variability within the climate system itself and by external factors such as greenhouse gases, solar variability, and volcanic dust – factors that act on time scales from months ...
    • Global Outlook for Ice and Snow: Chapter 4 - Snow 

      United Nations Environment Programme; United Nations Environment Programme (United Nations Environment Programme, 2007)
      Snow exerts a huge influence on climate, through its high reflectivity, insulating properties, and cooling of the atmosphere, and on surface hydrology, through its effects on water resources in many parts of the world. ...
    • Global Outlook for Ice and Snow: Chapter 5 - Ice in the sea 

      United Nations Environment Programme; United Nations Environment Programme (United Nations Environment Programme, 2007)
      Sean ice plays a key role for climate and is important as habitat and for human activities and economies. Observations show and models indicate that climate and sea-ice regimes are changing. Sea-ice extent in the Arctic ...
    • Global Outlook for Ice and Snow: Chapter 6 - Ice on the land 

      United Nations Environment Programme; United Nations Environment Programme (United Nations Environment Programme, 2007)
      This chapter covers ice masses on land: ice sheets; glaciers and ice caps; and the impact on global sea level of the melting of land ice.
    • Global Outlook for Ice and Snow: Chapter 7 - Frozen ground 

      United Nations Environment Programme; United Nations Environment Programme (United Nations Environment Programme, 2007)
      Permafrost temperatures have increased during the last 20–30 years in almost all areas of the Northern Hemisphere. An increase in the depth of the active layer above the permafrost, which thaws in the summer, is less ...
    • Global Outlook for Ice and Snow: Chapter 8 - River and lake ice 

      United Nations Environment Programme (2007)
      Floating freshwater ice is a key component of cold-regions river and lake systems. Ice creates and controls unique aquatic habitats and related biological productivity and diversity. It also poses major challenges (for ...
    • Global Outlook for Ice and Snow: Chapter 9 - Policy and perspectives 

      United Nations Environment Programme; United Nations Environment Programme (United Nations Environment Programme, 2007)
      The underlying theme in the preceding chapters is that changes are now observed in ice and snow and bigger changes are projected. The greenhouse gases from past and current emissions remain in the Earth’s atmosphere for ...
    • Global Outlook for Ice and Snow: Highlights 

      United Nations Environment Programme; United Nations Environment Programme (United Nations Environment Programme, 2007)
      Ice and snow are important components of the Earth’s climate system and are particularly sensitive to global warming. Over the last few decades the amount of ice and snow, especially in the Northern Hemisphere, has decreased ...
    • Global Outlook for Ice and Snow: Powerpoint 

      United Nations Environment Programme; United Nations Environment Programme (United Nations Environment Programme, 2007)
      Powerpoint Presentation of GEO Ice and snow