Global Temperatures Global Troposphere Temperatures click here For full size []]
Providing Insight
Into Climate Change
The Earth's atmosphere is Warming Very Slowly

Natural climate change is cyclic on many time scales, so long-term straight line trends may be misleading. There has been little atmospheric warming since 1998.

Global Lower Troposphere Temperatures and CO2

The graph above shows the temperature changes of the lower troposphere from the surface up to about 8 km as determined by the analyses of satellite data from the University of Alabama in Huntsville (UAH). Surface temperature data is contaminated by the effects of urban development. The magnetic flux from the Sun reached a peak in 1991. The high magnetic flux reduces cloud cover and causes warming. Since then the Sun has become quiet, however it continues to cause warming for a few decades after its peak intensity due to the huge heat capacity of the oceans. The red line is the average of the climate models in the lower troposphere. The climate models are running too hot.

Cool periods in 1984 and 1992 were caused by the El Chichon and Pinatubo volcanic eruptions. The temperature spikes in 1998 and 2010 were cause by strong El Ninos.

A surface temperature index is produced by the U.K. Met Office. The graph below shows the HadCRUT5 infilled temperatures from 1850, with and without the UHIE correction of 0.040 C/decade along with the CMIP5 mulit-model mean simulation.

Global Surface Temperatures & Model Projections from1850

The graph below shows the corrected HadCRUT5 corrected temperatures and the multi-model mean simulations from 1980 with the trend lines. The graph shows the simulated trend is 152% of the measured trend. The last year 2021 is a partial year.

 Global surface temp 1980 HadCRUT5

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