What can you tell me about the observed data for solar luminosity and greenhouse gases that are included with EdGCM?
The solar luminosity values and greenhouse gas values supplied with EdGCM are the actual data sets used by the NASA/GISS climate group in their continuing studies of climate change (see http://www.giss.nasa.gov/ for full information on GISS’s research and data sets). The greenhouse gas values from 1958-2000 are based on direct measurements of atmospheric trace gas levels (samples of air are taken in casks at several “pristine” locations around the world). Values from 1850-1957 have been measured from bubbles trapped in ice cores. Values from 2001-2050 are projections. The IPCC uses many potential scenarios for greenhouse gas increase. If you obtain any other scenarios, or generate some of your own, EdGCM will allo you to utilize data sets as input in the trends sections of the Setup Simulations window. Detailed references and plots of greenhouse gas forcings may be found here: http://www.giss.nasa.gov/data/simodel/ghgases/ A paper on the calculation of past solar irradiance by Solanki
Related Questions
- I have heard that global warming is caused by carbon dioxide and other greenhouse gases. How much of these gases does my solar thermal system produce?
- How do you know that carbon dioxide and other greenhouse gases are to blame, and not other factors, such as volcanoes, solar output or natural cycles?
- What can you tell me about the observed data for solar luminosity and greenhouse gases that are included with EdGCM?
