The relatively brief increase in global temperatures during the late 20th century took a pause over the past 15 years or so, but worldwide carbon emissions have continued to grow (now at the “alarming” level of 4 parts per 10,000 in the atmosphere, despite significant decreases in the U.S. over the past few years, and even bigger decreases in U.S. carbon emissions relative to real output). This disconnect is a major reason why climate models have failed so miserably in recent years. Ironically, the warming that did occur last century, and the continuing increases in carbon concentrations, have increased the earth’s vegetative cover and “greened” the planet, as described by climatologist Roy Spencer. This appears to have occurred in certain desert regions as well as areas of more moderate conditions. Coincidentally, this greening is a source of increased carbon uptake as well.
In the meantime, President Obama has announced new carbon emission rules for U.S. power plants. Here’s another Roy Spencer post on that topic. The new rules will raise energy costs, damage the economy, and contribute climate benefits of approximately zero.