Annual temperature: The historical time series of statewide annual temperatures in Colorado begins in 1895. Over the entire record, there has been an upward trend, which has resulted in temperatures in the early 21st century being about 2ºF warmer than temperatures 100 years ago. Despite this long-term rise however, the record continues to be largely dominated by annual… Read More »
Computer simulations of global climate change have long indicated the world’s polar regions should show the first and severest signs of CO2-induced global warming. If the models are correct, these signs should be especially evident since the second half of the 20th century, when approximately two-thirds of the modern-era rise in atmospheric CO2 occurred and Earth’s temperature supposedly… Read More »
Many claim sea level is rising because of global warming and point to changes along the Gulf of Mexico coast. Sea level has risen since the end of the last Ice Age (Figure 1), but it has slowed dramatically in the last few hundred years. However, shoreline change is not just a function of water level change. Misdirection… Read More »
Two professors of sociology think they can explain why “Climate Deniers” are winning. But Riley E. Dunlap and Aaron M. McCright start from the wrong assumption and miss the bleeding obvious: the theory was wrong, the evidence has changed, and thousands of volunteers have exposed it. The real question sociologists will be studying for years to come is:… Read More »
The southern plains drought, followed the second strongest La Niña (behind only 1917/18) according to the Southern Oscillation Index (SOI), an atmospheric pressure based measure (standardized Darwin, Australia versus Tahiti surface pressure). Positive values are La Niña, negative El Niños. The April to April SOI showed the 1917/18 peak and 2010/11 close behind.
Global food security is one of the most pressing societal issues of our time. Based on food production databases assembled and maintained by the United Nations, I have identified the specific crops that supply 95% of the food needs of the world, six large regions into which the world may be divided, twenty sub-regions, and twenty-five individual countries… Read More »