Navigation Links
Monsoon failure key to long droughts in Southwest
Date:3/11/2013

ican Monsoon Region 2, or NAM2.

In all, the researchers used samples from 50 to 100 trees at each of 53 different sites throughout southwestern North America. The team's climate analyses focused on NAM2, which covers most of Arizona, western New Mexico and northern parts of the Mexican states of Sonora and Chihuahua.

Griffin said, "It was a massive undertaking -- we employed about 15 undergraduates over a four-year period to measure almost 1 million tree rings."

The results surprised him because rain gauge records for the Southwest from 1950-2000 show dry seasons alternated with wet ones.

However, the team's new multi-century record going back to 1539 shows that the wet/dry pattern of the latter part of the 20th century is not the norm either prior to the 20th century or now, he said.

One possible next step, Woodhouse said, is to expand the current project to other areas of the Southwest and into Mexico, where the monsoon has a bigger influence on annual precipitation.

Another would be using tree-ring reconstructions of the Southwest's fire histories to see how wildfires are related to summer precipitation.

Griffin said, "Before I moved to the Southwest, I didn't realize how critically important the summer rains are to the ecosystems here. The summer monsoon rains have allowed humans to survive in the Southwest for at least 4,000 years."


'/>"/>
Contact: Mari N. Jensen
mnjensen@email.arizona.edu
520-626-9635
University of Arizona
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Cleveland Clinic research shows anemia drug does not improve health of anemic heart failure patients
2. Temple researchers discover key to heart failure, new therapies on horizon
3. New therapy for heart failure may enhance bodys stem cell response at cardiovascular injury site
4. Elsevier launches new open access journal -- Case Studies in Engineering Failure Analysis
5. Neutrons help explain why antibiotics prescribed for chemotherapy cause kidney failure
6. Molecular and protein markers discovered for liver transplant failure from hepatitis C
7. Moderate coffee consumption offers protection against heart failure
8. UH Case Medical Center, CardioKinetix reveal promising data for treatment for heart failure
9. Ocean acidification linked to larval oyster failure
10. Droughts are pushing trees to the limit
11. Which plants will survive droughts, climate change?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Monsoon failure key to long droughts in Southwest
(Date:11/18/2014)... NEW YORK , Nov. 18, 2014 /PRNewswire/ ... iris-based identity authentication solutions, and MorphoTrust USA ... solutions and services, today announced a strategic partnership ... across enterprise, motor vehicle administration (MVA), airport screening ... leader in identity-related solutions, MorphoTrust serves consumers through ...
(Date:11/7/2014)... Debra Auguste, associate professor, biomedical engineering, in the ... of New York, have identified a molecule that ... the most aggressive forms of breast cancer. , ... mortality rate owing to aggressive proliferation and metastasis ... Professor Auguste,s team, discovered the overexpression of intercellular ...
(Date:11/6/2014)... for a predator. Except when that predator runs so fast ... to its size, is the fastest creature on Earth. Some ... second (at about five miles per hour). The fastest human ... gold from the tiger beetle, a person would have to ... has a problem. At peak speeds, everything becomes a blur. ...
Breaking Biology News(10 mins):EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3The tiger beetle: Too fast to see 2
... cells that promotes growth appears to spur restoration of ... sclerosis (MS), researchers at Case Western Reserve University School ... until published in the online version of Nature ... on Sunday, May 20. In animals injected with ...
... , , , , ... AUDIO: Plants capable of producing oils for industrial chemicals and human ... Click here for more information. , , ... , , , , , ...
... researchers from UCSF and UC San Diego has identified an ... and animal studies, suggesting it could offer a low-dose, low ... throughout the world. Based on these results, the ... as auranofin, from the U.S. Food and Drug Administration, and ...
Cached Biology News:Growth factor in stem cells may spur recovery from MS 2Supercharged safflower 2Supercharged safflower 3Supercharged safflower 4Lab tests show arthritis drug effective against global parasite 2Lab tests show arthritis drug effective against global parasite 3Lab tests show arthritis drug effective against global parasite 4
(Date:11/24/2014)...  IGI Laboratories, Inc. (NYSE MKT: IG), a ... company, today announced it has submitted an additional abbreviated ... Drug Administration (FDA), which brings the Company,s total number ... submissions now pending at the FDA. ... Company, commented, "Our team here at IGI has continued ...
(Date:11/24/2014)... , Nov. 24, 2014  Last week, ... G.K. Butterfield (D-NC) took a bold bipartisan ... by introducing the OPEN Act. Original co-sponsors of ... (D-FL). The Act will incentivize drug makers and ... rare diseases and pediatric cancers, which opens the ...
(Date:11/24/2014)...   First published articles now ... Elsevier , a world-leading provider of scientific, technical and medical ... of the latest title in the Current Opinion journal ... . Current Opinion in ... to keep up-to-date with the expanding volume of information published ...
(Date:11/24/2014)... USA (PRWEB) November 23, 2014 One of ... field of optics and photonics is now available to high ... very low cost. SPIE, the international society for optics ... to the complete SPIE Digital Library available to ... price. , “Light-based technologies are integral to all areas of ...
Breaking Biology Technology:IGI Laboratories, Inc. Announces ANDA Submission 2OPEN Act Introduced to Repurpose Drugs for Rare Diseases 2Elsevier Announces Launch of New Journal: Current Opinion in Food Science 2Elsevier Announces Launch of New Journal: Current Opinion in Food Science 3SPIE Digital Library Now Available to High Schools, Two-Year Colleges at No or Low Cost 2
... not your parents' generation of corporate leaders. , ,A ... cross the lips of gray-haired, gray-suited corporate executives. Today, ... Wisconsin doesn't yet have it. , ,At the Olympia ... academic and arts groups met to brainstorm strategies for ...
... Wis. - The 53 Wisconsin companies that won ... Innovation Research (SBIR) and Small Business Technology Transfer (STTR) ... at an upcoming banquet in Madison. , ,The awards ... transfer workshop. The workshop will focus on SBIR/STTR funding ...
... 30 years ago, then-Gov. Pat Lucey and the Wisconsin ... property taxes. It was a bipartisan decision that has ... times and foreign competition threatened. , ,Today, Wisconsin policymakers ... a competitive toehold by reducing state taxes that discourage ...
Cached Biology Technology:Tech leaders call for more creativity 2Modernizing the tax code can make Wisconsin tech businesses more competitive 2Modernizing the tax code can make Wisconsin tech businesses more competitive 3
... stretching or compression of a single cell ... so you can precisely regulate the degree ... 64 unique strain parameters. ST-160 has a ... models are compatible with Nikon, Olympus, Leica, ...
... Glycosylation is a post-translational modification ... biological functions, including immune regulation, inflammation, ... Biotechnology has developed two lectin based ... and Wheat Germ Agglutinin (WGA), that ...
... Pierce offers maleimide activated carrier ... hapten-carrier conjugates. Imject Maleimide Activated Carrier ... have been preactivated with a heterobifunctional ... a stable, sulfhydryl-reactive carrier protein. ...
Cell Culture Flask, 25 cm, tissue-culture treated polystyrene...
Biology Products: