Earth's average temperature has risen over 1º F in the past century. It is projected to rise an additional 3º and 10º over the next 100 years. Data from NASA's global network of satellites, airborne missions and surface monitoring systems is used to build climate models that help us understand the causes & effects of global warming. :::LEARN MORE::: Key Indicators: Global Surface Temperature http://climate.nasa.gov/key_indicators/#globalTemp National Climate Assessment: Recent U.S. Temperature Trends http://nca2014.globalchange.gov/report/our-changing-climate/recent-us-temperature-trends National Climate Assessment: Projected Global Temperature http://nca2014.globalchange.gov/highlights/overview/overview#graphic-20895 How Will Global Warming Change Earth? http://earthobservatory.nasa.gov/Features/GlobalWarming/page6.php Long-term Global Warming Trend Sustained in 2013 http://climate.nasa.gov/news/1029/ The Current and Future Consequences of Global Change http://climate.nasa.gov/effects/ Earth's Big Heat Bucket http://earthobservatory.nasa.gov/Features/HeatBucket/ Interactive: Climate Time Machine http://climate.nasa.gov/interactives/climate_time_machine Quiz: Global Warming http://climate.nasa.gov/climate_resource_center/16 :::NASA MISSIONS & RESEARCH::: OCO-2 - Orbiting Carbon Observatory-2 http://oco.jpl.nasa.gov/ AIRS - Atmospheric Infrared Sounder http://airs.jpl.nasa.gov/ MODIS - Moderate Resolution Imaging Spectroradiometer http://modis.gsfc.nasa.gov/index.php OSTM/Jason-2 - Ocean Surface Topography Mission https://sealevel.jpl.nasa.gov/ GISTEMP - GISS Surface Temperature Analysis http://data.giss.nasa.gov/gistemp/ :::FOR EDUCATORS::: NASA Wavelength http://nasawavelength.org/resource-search?qq=global+warming Climate Kids: What is Global Climate Change? http://climatekids.nasa.gov/climate-change-meaning/