Navigation Links
Recent decades likely wettest in 4 millennia in Tibet
Date:2/11/2014

Recent decades may have been the wettest in 3,500 years in North East Tibet according to climate researchers at the University of East Anglia (UK) and the Chinese Academy of Sciences (Lanzhou, China).

Researchers looked at 3,500-year-long tree ring records from North East Tibet to estimate annual precipitation. They found that recent decades have likely been the wettest on record in this semi-arid region.

The precipitation records have been reconstructed using sub-fossil, archaeological and living juniper tree samples from the north-eastern Tibetan Plateau. They reveal a trend towards wider growth rings, implying moister growing conditions with the last 50 years seeing increasing amounts of rainfall.

Notable historical dry periods occurred in the 4th Century BC and in the second half of the 15th Century AD.

Dr Tim Osborn from UEA's Climatic Research Unit said: "Our collaboration with scientists from China has been very fruitful, leading to what is currently the longest tree-ring-width record in the cold and arid north-eastern Tibetan Plateau. Not only is the record very long, it is based on samples from more than 1000 trees, some of which have an individual lifespan of more than 2000 years. These are among the longest-lived trees in the world."

Not only are these trees long-lived, but they are useful for understanding how climate has changed. The widths of the tree rings show a close correspondence with observations from rain gauges over the last 55 years, such that tree rings in wetter years tend to be wider than tree rings in drier years.

Dr Osborn said: "The most recent few decades have, on average, the widest rings in the 3,500-year record which suggests that this may have been the wettest period, perhaps associated with global warming during the last century. Indeed, over the last two thousand years when the Northern Hemisphere is warm it appears to be wetter in the Mountains of North East Tibet. This suggests that any further large-scale warming might be associated with even greater rainfall in this region though we note that other factors could also have contributed to the increased ring widths."


'/>"/>

Contact: Lisa Horton
l.horton@uea.ac.uk
44-016-035-92764
University of East Anglia
Source:Eurekalert

Related biology news :

1. From 503-million-year-old fungi to recent earthquakes: New Geology posted ahead of print
2. GEN reports on recent progress in Alzheimers research
3. Recent studies bring fossils and genes together to piece together evolutionary history
4. Invading species can extinguish native plants despite recent reports
5. Recent study suggests bats are reservoir for ebola virus in Bangladesh
6. Recent breakthroughs in cocoa flavanol research discussed by European research consortium and expert panel
7. Volcanic aerosols, not pollutants, tamped down recent Earth warming, says CU-Boulder study
8. The equine Adam lived fairly recently: Close relationships among modern stallions
9. Recent progress in gene-sensing strategies for rapid detection of foodborne pathogens
10. Highest winter losses in recent years for honey bees in Scotland
11. Recent highlights in Molecular Biology and Evolution
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/2/2016)... 2016   The Weather Company , an IBM Business ... industry-first capability in which consumers will be able to interact ... questions via voice or text and receive relevant information about ... Marketers have long sought an advertising solution that can ... personal, relevant and valuable; and can scale across millions of ...
(Date:5/16/2016)... 2016   EyeLock LLC , a market leader ... of an IoT Center of Excellence in ... development of embedded iris biometric applications. EyeLock,s ... and security with unmatched biometric accuracy, making it the ... DNA. EyeLock,s platform uses video technology to deliver a ...
(Date:4/28/2016)... First quarter 2016:   , Revenues amounted to ... of 2015 The gross margin was 49% (27) ... operating margin was 40% (-13) Earnings per share rose ... was SEK 249.9 M (21.2) , Outlook   ... The operating margin for 2016 is estimated to exceed ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... 27, 2016  Liquid Biotech USA ... of a Sponsored Research Agreement with The University ... (CTCs) from cancer patients.  The funding will be ... correlate with clinical outcomes in cancer patients undergoing ... then be employed to support the design of ...
(Date:6/24/2016)... Raleigh, NC (PRWEB) , ... June 24, 2016 , ... ... find the most commonly-identified miRNAs in people with peritoneal or pleural mesothelioma. Their findings ... here to read it now. , Diagnostic biomarkers are signposts in the blood, ...
(Date:6/23/2016)... -- A person commits a crime, and the detective uses ... criminal down. An outbreak of foodborne illness makes ... uses DNA evidence to track down the bacteria that caused ... not. The FDA has increasingly used a complex, cutting-edge technology ... Put as simply as possible, whole genome sequencing is a ...
(Date:6/23/2016)... , June 23, 2016   EpiBiome , a ... $1 million in debt financing from Silicon Valley Bank ... automation and to advance its drug development efforts, as ... facility. "SVB has been an incredible strategic ... services a traditional bank would provide," said Dr. ...
Breaking Biology Technology: