NOAA's updated Annual Greenhouse Gas Index (AGGI), which measures the direct climate influence of many greenhouse gases such as carbon dioxide and methane, shows a continued steady upward trend, reports ScienceDaily.
The AGGI reached 1.29 in 2010, which means that the combined heating effect of long-lived greenhouse gases added to the atmosphere by human activities has increased 29 percent since 1990. That is up from 1.27% in 2009.
The AGGI reached 1.29 in 2010, which means that the combined heating effect of long-lived greenhouse gases added to the atmosphere by human activities has increased 29 percent since 1990. That is up from 1.27% in 2009.
