BIO-1151 Chapter Notes - Chapter 7: Global Change, Health Canada, Evapotranspiration
Document Summary
In contrast, global warming addresses changes only in average surface temperatures. Scientific evidence related to climate change: the following statements are supported by solid scientific evidence: Greenhouse gas emissions have been rising for several decades. Glaciers have lost more mass than they have gained. Reduced snow cover has been documents, as well as earlier spring melting of ice on rivers and lakes. Total sea ice in canada has been declining each decade. Over one-half of canada is underlain by permafrost. Modelling climate change: the uncertainty associated with global climate change has led scientists to explore different ways of assessing past and future climates, one approach is climate modelling. The earliest global climate models date back to the 1950s, but more recent concerns about global warming have propelled the science of climate modelling to the forefront. Climate models: all climate models consider some or all of five components in order to predict future climates:
