FOS Global Cooling Update
The graph above shows the temperature changes of the lower troposphere from the surface up to about 8 km as determined from the average of two analyses of satellite data (UAH and RSS). The best fit line from January 2002 to February 2013 indicates a decline of 0.03 Celsius/decade. The sharp temperature spikes in 1998 and 2010 are El Nino events. The Sun's activity, which was increasing through most of the 20th century, reached a magnetic flux peak in 1992. The Sun has since become quiet, causing a change of trend. The temperature response is delayed about a decade after the Sun's peak intensity to about 2002 due to the huge heat capacity of the oceans. The green line shows the CO2 concentration in the atmosphere, as measured at Mauna Loa, Hawaii. The two red lines show global cooling periods between 1979 and 2002.