Previously, the Iowa Environmental Council reported on a letter signed by a substantial number of Iowa scientists stating that climate change is real. Now, an even larger number of scientists–138 in total, representing 27 Iowa colleges and universities–signed released a statement arguing this year’s drought conditions are consistent with climate change. The Center for Global and Regional Environmental Research at the University of Iowa held a press conference announcing the new statement, the text of which is below:
Text of the statement:
As science faculty and research staff at Iowa universities and colleges, we have confidence in recent findings that climate change is real and having an impact on the economy and natural resources of Iowa. We feel that it is important for citizens of Iowa to understand its implications. Iowans are living with climate change now and it is costing us money already. The drought that we are currently experiencing is consistent with an observed warmer climate, although science cannot say with certainty that the drought of 2012 was caused directly by human activities. The following observations support the case that more droughts and floods are likely in the future.
1. Globally over the past 30 years, there is clear statistical evidence that extreme high temperatures are occurring disproportionately more than extreme low temperatures. The climate likely will continue to warm due to increasing global emissions and accumulation of greenhouse gases.
2. In a warmer climate, wet years get wetter and dry years get dryer. And dry years get hotter ‐ that is precisely what happened in Iowa this year. We can expect Iowa to experience higher temperatures when dry weather patterns predominate. The latest science, based on overwhelming lines of physical
evidence, indicates we can expect dry periods to be more frequent as soon as the 2020s.
3. Iowa also has experienced an increasing frequency of intense rains over the past 50 years (Iowa Climate Change Impacts 2010, http://www.dnr.gov), likely due to a higher surface evaporation in a warmer world. Because of these extremes in precipitation (drought and flood), Iowans will increasingly need infrastructure investments to adapt to climate fluctuations while developing and implementing
As global citizens, Iowans should be a part of the solution. We can prosper, create jobs, and provide an engine for economic growth in the process (Iowa Climate Change Advisory Committee 2008 report, http://www.iaclimatechange.us). Iowa should lead innovation in reducing greenhouse gas emissions, improve
resilience in agriculture and communities, and move towards greater energy efficiency and increased use of renewable energy.
For more information:
See the names of scientists signing the document (.pdf), read more about the statement, or visit the website of the Center for Global and Regional Environmental Research at the University of Iowa.