Long-term projections by scientists are documented in the Intergovernmental Panel on Climate Change (IPCC) assessment. This report documents that most models predict that global surface temperatures will continue to increase for several hundred years unless greenhouse gases are reduced. The IPCC report has four “representative concentration pathways” (RCP), based on possible levels of future emissions of GHG’s.
Increasing Sea Level
Latest findings by NASA show that global mean sea level is increasing about 3.4 mm/yr. The rate of rise is not the same everywhere, but there will be substantial impacts to multiple resources along coastlines. For more information, see the Climate.gov tool kit for information on coastal flood risk and the Climate Explorer.