Climate Change Impacts On North America

Increasing greenhouse gas concentrations will have many effects as Increase Earth's average temperature, Influence the patterns and amounts of precipitation, Reduce ice and snow cover, raise of the sea level and Increase of the acidity of the oceans. In the North America, specifically, the average temperature will be a couple degrees higher that the average global mean. The seasons will be more extreme; hotter days during the winter and cold temperature during winter. Considering Mexico, lakes and reservoirs will be at critical lows and that forecast the drought.

 Agriculture and fisheries are highly dependent on specific climate conditions. While increases in temperature and carbon dioxide can be beneficial for some crops in some places, changes in the frequency and severity of droughts and floods could pose challenges for farmers. Crops tend to grow faster in warmer conditions. However, for some crops the faster growth reduces the amount of time that seeds have to grow and mature.  This can reduce the amount of crop produced from a given amount of land.

http://www.epa.gov/climatechange/impacts-adaptation/agriculture.html

       Acording to IPCC, Global climate change effects North America, decreasing snowpack in the western mountains; 5-20 percent increase in yields of rain-fed agriculture in some regions; increased frequency, intensity and duration of heat waves in cities that currently experience them. Also Over the past decades, economic damage from severe weather has increased dramatically. Predicted rising temperatures will continue to melt snowpack and will increase evaporation, affecting seasonal availability of water. As North America and the rest of the planet continue to warm, the conservation of diminishing water sources will likely become a major focus for local communities and public land managers. Other anticipated changes include the expansion of severe wildfires, increased drought frequency and severity, increased plant and disease outbreaks and insect infestations, and the degradation of vulnerable habitats, all with major implications for wildlife. 

http://www.wcsnorthamerica.org/ConservationInitiatives/ClimateChange.aspx