Author Archive

Sea level rise is accelerating; how much it costs is up to us

Guardian: As humans emit heat-trapping gases into the atmosphere, it’s causing the Earth to warm. It’s also causing the ocean waters to rise. In fact, water rise is one of the clearest signatures of a warming world. The questions we want to answer are, how much will sea levels rise, and how fast? The answers to this have large implications on what societies should do. It isn’t just coastal communities that will be affected. While there are approximately 150 million people worldwide that live within 3 feet...

New research finds that global warming is intensifying wildfires

Guardian: The fire season in northern California during 2014 was the second longest in terms of burned areas since 1996. An increase in fire risk in California is attributable to human-induced climate change. The authors, Jin-Ho Yoon and colleagues make the point that California has been under drought conditions since 2012 and that the drought worsened recently. As is obvious, drought exacerbates the threat from wildfires. Last year, the California Department of Forestry and Fire Protection saw many more...

New study links global warming to Hurricane Sandy and other extreme weather events

Guardian: One of the hottest areas of climate research these days is on the potential connections between human emissions, global warming, and extreme weather. Will global warming make extreme weather more common or less common? More severe or less severe? New research, just published today in Nature Climate Change helps to answer that question by approaching the problem in a novel way. In short yes, human emissions of greenhouse gases have made certain particular weather events more severe. Let’s investigate...

Global Warming Will Intensify Drought, Says New Study

Guardian: When scientists think about climate change, we often focus on long term trends and multi-year averages of various climate measures such as temperature, ocean heat, sea level, ocean acidity, and ice loss. But, what matters most in our day-to-day lives is extreme weather. If human-caused climate change leads to more extreme weather, it would make taking action more prudent. It is clear that human emissions have led to increased frequencies of heat waves and have changed the patterns of rainfall...

Global warming and the future of storms

Guardian: We know that changes we are making to the Earth's climate will (and currently are) affecting weather. Some of the impacts are clear to see and easy to quantify. For instance, in some regions, droughts are becoming more severe and longer lasting, while in other locations, the opposite is occurring – more precipitation is falling in heavier downbursts. Two competing issues have to be considered. First, increased temperatures are increasing evaporation rates i.e., drying is occurring. Second, increased...