Human evidence: Matching patterns of surface warming

  • Image: NASA

  • Image: NASA

  • Image: doglikehorse.com / Fotolia

  • Image: NASA

  • Image: sanja gjenero / RGB Stock

  • Image: John De Boer / RGB Stock

  • Image: Laurin Rinder / fotolia

    Climate models predict that global warming caused by increased levels of greenhouse gases such as carbon dioxide should follow certain geographic patterns, with higher rates of warming in some regions than others. These include faster rates of warming over land, at higher latitudes, at night-time and during the winter. Measurements over the past 50 years show patterns of surface warming consistent with those predicted for greenhouse-gas-induced warming.