Navigation Links
Land 'evapotranspiration' taking unexpected turn: huge parts of world are drying up
Date:10/10/2010

to see this shift in evapotranspiration over such a large area of the Southern Hemisphere," Law said. "It is critical to continue such long-term observations, because until we monitor this for a longer period of time, we can't be sure why this is occurring."

Some of the areas with the most severe drying include southeast Africa, much of Australia, central India, large parts of South America, and some of Indonesia. Most of these regions are historically dry, but some are actually tropical rain forests.

The rather abrupt change from increased global evapotranspiration to a near halt in this process coincided with a major El Nino event in 1998, the researchers note in their report, but they are not suggesting that is a causative mechanism for a phenomenon that has been going on for more than a decade now.

Greater evapotranspiration was expected with global warming, because of increased evaporation of water from the ocean and more precipitation overall. And data indeed show that some areas are wetter than they used to be.

However, other huge areas are now drying out, the study showed. This could lead to increased drought stress on vegetation and less overall productivity, Law said, and as a result less carbon absorbed, less cooling through evapotranspiration, and more frequent or extreme heat waves.

Some of the sites used in this study are operated by Law's research group in the central Oregon Cascade Range in the Metolius River watershed, and they are consistent with some of these concerns. In the last decade there have been multiple years of drought, vegetative stress, and some significant forest fires in that area.

Evapotranspiration returns about 60 percent of annual precipitation back to the atmosphere, in the process using more than half of the solar energy absorbed by land surfaces. This is a key component of the global climate system, linking the cycling of water with energy and carbon cycles.

Longe
'/>"/>

Contact: Beverly Law
bev.law@oregonstate.edu
541-737-6111
Oregon State University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. WSU researchers taking sustainability of organic farming to new level
2. Taking a new look at old digs: Trampling animals may alter Stone Age sites
3. Taking the pulse of coral reefs
4. Report: Discovery networks hostage-taking a rare terror event
5. Taking the guesswork out of soil classification
6. Tracing natural hazards by taking Earths pulse
7. Taking sharper aim at stomach ulcer bacteria
8. Research shows that invisible hand guides evolution of cooperative turn-taking
9. Taking the pulse of our planet
10. Taking the next step toward advanced artificial limbs
11. Waters unexpected role in blood pressure control
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/19/2014)... VIEW, Calif. , Dec. 18, 2014  23andMe, Inc., the ... study that pinpoints fine-scale differences in genetic ancestry of individuals ... Since immigrants first arrived more than four hundred years ... as a meeting place for peoples from different continents. This ...
(Date:12/17/2014)... RALEIGH, N.C. , Dec. 16, 2014 Valencell, ... licensed its PerformTek biometric technology to industry leaders such ... highly accurate, clinically validated, biometric wearable products. These products ... 6-9 in Las Vegas . ...
(Date:12/11/2014)... Dec. 09, 2014 Research and Markets ... http://www.researchandmarkets.com/research/9ql3kr/biometrics_market ) has announced the addition of the ... offering. One major trend emerging in ... Multimodal biometric systems utilize more than one characteristic of ...
Breaking Biology News(10 mins):23andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2
... , OAK RIDGE, Tenn., Sept. 30, 2011 -- ... classes, according to a collaboration by researchers at ... and the University of Tennessee, in research reported ... team, directed by ORNL-UT Governor,s Chairs Jeremy Smith ...
... besotted male and beer. Love-sick and lonely, the male girded his ... with a surprising outcome, as a U of T Mississauga professor ... ( Julodimorpha bakewelli ), became so enamored with a brown "stubby" ... vigorously that he died trying to copulate in the hot sun ...
... species recovers enough to be removed from the federal endangered ... government must conserve natural resources for the public good ... the Sept. 30 issue of the journal Science , ... certain natural resources, including wildlife, have no owners and therefore ...
Cached Biology News:High-performance simulation, neutrons uncover 3 classes of protein motion 2University of Toronto Mississauga professor wins Ig Nobel Prize for beer, sex research 2Researchers: Apply public trust doctrine to 'rescue' wildlife from politics 2Researchers: Apply public trust doctrine to 'rescue' wildlife from politics 3Researchers: Apply public trust doctrine to 'rescue' wildlife from politics 4
(Date:1/22/2015)... 2015 Diagenode, Inc., a leading ... Bioruptor® and complete solutions for epigenetics research, recently ... alleviating the need for manual processing. The new ... ChIP of histones or transcription factors and a ...
(Date:1/22/2015)... , Jan. 22, 2015   GenoSpace , a precision ... tools to enable the broad use of genomic, imaging and ... the appointment of Michelle Munson , CEO of Aspera, ... Logo - http://photos.prnewswire.com/prnh/20150122/170713 ...
(Date:12/24/2014)... NEW YORK , Dec. 24, 2014 PlasmaTech Biopharmaceuticals, ... in critical areas, announced the closing of an underwritten public ... purchase up to an aggregate 3,500,000 shares of common stock, ... per warrant.  The warrants have a per share exercise price ...
(Date:12/24/2014)... 23, 2014 GMO corn cases filed across ... in the process of being consolidated in a Kansas federal ... Syngenta AG MIR 162 Corn Litigation, MDL No. 2591 in ... Management of the Syngenta GMO corn multidistrict litigation (MDL) has ...
Breaking Biology Technology:Diagenode Launches Unique Semi-Automated Solution for Chromatin Immunoprecipitation 2GenoSpace Expands Board with Appointment of Michelle Munson 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3Carey Danis & Lowe Reports on Syngenta GMO Corn Transfer Order 2
... SHANGHAI, July 10 /PRNewswire-Asia-FirstCall/ -- ... a leading Chinese firm,specializing in the research, development, manufacture, ... will host a,conference call at 10:00 a.m. EDT on ... for the fourth quarter and full year ended March,31, ...
... Generic Pharmaceutical Association (GPhA) released the following statement today ... Biotechnology Industry Organization,s (BIO,s) erroneous claims regarding the Senate ... that anything less than an unprecedented 13 years of ... of the recent Federal Trade Commission (FTC) report that ...
... Mirixa Corporation, the leader in targeted pharmacy-based patient ... members to its growing pharmacy team. Mirixa welcomes ... Paul Miller, MS, RPh. , , Each new ... state and national pharmacy associations, national standards groups, and ...
Cached Biology Technology:China-Biotics, Inc. Announces Conference Call to Discuss Fourth Quarter and Full Year 2009 Financial Results 2GPhA Says BIO Cries Wolf on Senate Biogenerics Proposal 2Mirixa Corporation Announces Key New Hires 2
Bethyl Laboratories packages antibodies, conjugates and calibrators to provide quantitative ELISA kits. Each kit contains the following components, sufficient for 1000 single well assays....
quantitation of phosphatase activity, evaluation of hits and leads from HTS...
Bethyl Laboratories packages antibodies, conjugates and calibrators to provide quantitative ELISA kits. Each kit contains the following components, sufficient for 1000 single well assays....
Request Info...
Biology Products: