Drought in the West linked to warmer temperatures

Severe drought in western states in recent years may be linked to climate warming trends, according to new research led by scientists from the Lamont-Doherty Earth Observatory of Columbia University to be posted October 7 on Science magazine's website, www.sciencemag.org. This research was supported by the National Oceanic and Atmospheric Administration (NOAA) and the National Science Foundation (NSF).

Analyzing aridity in the western U.S. over the past 1,200 years, the study team, which also included scientists from the University of Arizona, University of Arkansas, and NOAA, found evidence suggesting that elevated aridity in the U.S. West may be a natural response to climate warming. "The Western United States is so vulnerable to drought, we thought it was important to understand some of the long-term causes of drought in North America," said lead author Dr. Edward R. Cook of the Lamont Doherty Earth Observatory's tree ring laboratory.

The study revealed that a 400-year-long period of elevated aridity and epic drought occurred in what is now the western U.S. during the period A.D. 900-1300. This corresponds broadly to the so-called "Medieval Warm Period," a time in which a variety of paleoclimate records indicate unusual warmth over much of the Northern Hemisphere. The authors of the new study argue that there are climate mechanisms involved that make warming climate conditions likely to lead to increased prevalence of drought in the western, interior region of North America.

Looking at implications for the future, the authors express concern. "Any trend towards warmer temperatures in the future could lead to a serious long-term increase in aridity over Western North America," they write in the paper.

Co-author Dr. David Meko of the University of Arizona tree ring lab notes that the drought that has gripped the western United States for the past four years "pales in comparison with so

Contact: Mary Tobin
The Earth Institute at Columbia University

Page: 1 2

Related biology news :

1. Drought sensitivity shapes species distribution patterns in tropical forests
2. Drought limits tropical plant distributions, scientists at the Smithsonian report
3. Drought reduces nitrogen-fixing in legumes
4. Protein chatter linked to cancer activation
5. Risk of common vaginal infection linked to preterm birth appears higher for blacks
6. Scientists show that mitochondrial DNA variants are linked to risk factors for type 2 diabetes
7. Antibody linked to MS significantly higher in spinal fluid of blacks
8. Loss of cells antenna linked to cancers development
9. Scientists identify first gene linked to scoliosis
10. Gum disease in postmenopausal women linked to oral bone loss
11. Screening approach leads to discovery of gene linked to breast cancer

Post Your Comments:

(Date:6/30/2017)... ARLINGTON, Va. , June 30, 2017 /PRNewswire-USNewswire/ ... a leading developer and supplier of face and ... the ATA Featured Product provider program. ... created an innovative way to monitor a driver,s ... benefit greatly from being able to detect fatigue ...
(Date:6/14/2017)... 15, 2017  IBM (NYSE: IBM ) is introducing several ... dedicated to developing collaboration between startups and global businesses, taking ... During the event, nine startups will showcase the solutions they ... industries. France is ... with a 30 percent increase in the number of startups ...
(Date:5/16/2017)... , May 16, 2017  Veratad Technologies, LLC ... of online age and identity verification solutions, announced today ... Identity Conference 2017, May 15 thru May 17, 2017, ... Building and International Trade Center. Identity ... globe and in today,s quickly evolving digital world, defining ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... October 10, 2017 , ... For the second ... a US2020 STEM Mentoring Award. Representatives of the FirstHand program travelled to Washington, ... from US2020. , US2020’s mission is to change the trajectory of STEM education ...
(Date:10/10/2017)... ... October 10, 2017 , ... USDM Life Sciences ... the life sciences and healthcare industries, announces a presentation by Subbu Viswanathan and ... presentation, “Automating GxP Validation for Agile Cloud Platforms,” will present a revolutionary approach ...
(Date:10/9/2017)... ... October 09, 2017 , ... At its national board meeting in North Carolina, ... Harvard University’s Departments of Physics and Astronomy, has been selected for membership in ... team for the 2015 Breakthrough Prize in Fundamental physics for the discovery of the ...
(Date:10/7/2017)... ... October 06, 2017 , ... ... Hi-C-based genomic technologies, launched its ProxiMeta™ Hi-C metagenome deconvolution product, featuring the ... and accompanying cloud-based bioinformatics software to perform Hi-C metagenome deconvolution using their ...
Breaking Biology Technology:
Cached News: