Navigation Links
Tipping elements in the Earth's climate system
Date:2/4/2008

rctic sea-ice during summer within a few decades.

Intermediately sensitive tipping elements, large uncertainty:

West Antarctic Ice Sheet - Recent gravity measurements suggest that the ice sheet is losing mass. Since most of the ice sheet is grounded below sea level the intrusion of ocean water could destabilize it. The tipping point could be reached with a local warming of five to eight degrees Celsius in summer. A worst case scenario shows the ice sheet could collapse within 300 years, possibly raising sea level by as much as five meters.

Boreal forest - The northern forests exhibit a complex interplay between tree physiology, permafrost and fire. A global mean warming of three to five degrees Celsius could lead to large-scale dieback of the boreal forests within 50 years. Under climate change the trees would be exposed to increasing water stress and peak summer heat and would be more vulnerable to diseases. Temperate tree species will remain excluded due to frost damage in still very cold winters.

Amazon rainforest - Global warming and deforestation will probably reduce rainfall in the region by up to 30 percent. Lengthening of the dry season, and increases in summer temperatures would make it difficult for the forest to re-establish. Models project dieback of the Amazon rainforest to occur under three to four degrees Celsius global warming within fifty years. Even land-use change alone could potentially bring forest cover to a critical threshold.

El Nio Southern Oscillation (ENSO) The variability of this ocean-atmosphere mode is controlled by the layering of water of different temperatures in the Pacific Ocean and the temperature gradient across the equator. During the globally three degrees Celsius warmer early Pliocene ENSO may have been suppressed in favor of persistent El Nio or La Nia conditions. In response to a warmer stabilized climate, the most realistic models simulate increased El Nio amplitude with
'/>"/>

Contact: Uta Pohlmann
pohlmann@pik-potsdam.de
49-331-288-2507
Potsdam Institute for Climate Impact Research (PIK)
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Ultraconserved elements in the genome: Are they indispensable?
2. Selexis Announces Advanced Approach to Maximize Power of Genetic Elements for Rapid Development of High Performance Cell Lines
3. Worlds largest investor coalition seeks further disclosure on climate change and shareholder value
4. Impoverished areas of Africa and Asia face severe crop losses from climate change in 20 years
5. AGU revises position on climate change
6. Climate change in the Baltic Sea basin -- past, present and future
7. Climate influence on deep sea populations
8. Japanese and German researchers meet to discuss climate change
9. A warming climate can support glacial ice
10. UC San Diego begins trading greenhouse gas credits on Chicago Climate Exchange
11. Immediate action needed to save corals from climate change
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/1/2014)... increasing amount of research shows an association between TV ... lifestyle. Now, a new Cornell University study points out ... might lead people to eat twice as much as ... action movie while snacking your mouth will see more ... the new article just published in the Journal ...
(Date:9/1/2014)... has improved steadily in recent yearsspurred in large part ... poor and disparities continue to widen among socioeconomic and ... School of Public Health (HSPH). , "The study provides ... efforts by many groups and individuals to improve U.S. ... indicates that these efforts need to be expanded," said ...
(Date:9/1/2014)... U.S. diet showed some modest improvement in the last ... the consumption of unhealthy trans fats, but the gap ... the poor. , , An unhealthy diet is closely ... a healthy diet is an important part of the ... in diet quality is important because it can offer ...
Breaking Biology News(10 mins):Can action movies make you fat? 2Quality of US diet shows modest improvement, but overall remains poor 2Quality of US diet shows modest improvement, but overall remains poor 3Quality of US diet improves, gap widens for quality between rich and poor 2Quality of US diet improves, gap widens for quality between rich and poor 3
... Researchers at Albert Einstein College of Medicine of Yeshiva ... immune system and causes disease. The study, ... of Sciences ( PNAS ), may help scientists develop ... neoformans . These fungal infections occur most commonly in those ...
... have shown that gardening can offer enough moderate physical activity ... be published in February in the journal HortScience , ... gardening is keeping older hands strong and nimble. "One ... are gardeners have better hand strength and pinch force, which ...
... by researchers at the California Institute of Technology (Caltech) ... published in the Proceedings of the National Academy ... of papers, "Gene Networks in Development and Evolution Special ... Davidson, the Norman Chandler Professor of Cell Biology. His ...
Cached Biology News:Scientists discover how deadly fungus protects itself 2Gardening gives older adults benefits like hand strength and self-esteem 2Caltech researchers help unlock the secrets of gene regulatory networks 2
(Date:8/28/2014)... Sterlitech is proud to announce that ... stable of products . These additional products ... include membrane filters with surface charges. , ... for our membrane process testing equipment, and correspondingly, a ... membranes,” explains Sterlitech President Mark Spatz. “The addition ...
(Date:8/28/2014)... work by a Florida State University research team has ... your temperature, emit white light, and convert photon energy ... like a butterfly. , Biwu Ma, associate professor in ... FAMU-FSU College of Engineering, created the molecule in a ... discover that his creation has many other unique capabilities. ...
(Date:8/28/2014)... 28, 2014 A new market ... world is available from Strategic Consulting, Inc., the ... Industrial Microbiology Market Review, Fourth Edition: Global Review ... (IMMR—4) tracks and compares microbiology test volumes, market ... Europe and Asia, and forecasts future volumes and ...
(Date:8/28/2014)... PrimeSource Building Products, Inc., a leading ... to support their communication needs with the ... conferencing platform GlobalMeet powered by SoundConnect. The solution ... SoundConnect delivers award winning “results driven” business class ... be utilizing GlobalMeet powered by SoundConnect ...
Breaking Biology Technology:Sterlitech Corporation Enhances Its Selection of Flat Sheet Membrane Filters 2Novel 'butterfly' molecule could build new sensors, photoenergy conversion devices 22 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 22 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 3PrimeSource Chooses SoundConnect as Collaboration Provider 2
... Inc. (Nasdaq: SRLS ) will release its fiscal ... on Friday, February 11, 2011. SeraCare executives will host a ... day to review first quarter results. The ... can be accessed by logging on to the "Investor Center, ...
... Inc. (Nasdaq: PCYC ) today reported recent ... that ended December 31, 2010.Recent Developments & Highlights ... PCI-32765 in B-cell malignanciesPharmacyclics has designed a broad Phase ... and diffuse large B-cell lymphoma to inform the Phase ...
... new way of splitting layered materials to give atom ... a range of novel two-dimensional nanomaterials with chemical and ... electronic and energy storage technologies. The collaborative* international ... Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Ireland, and ...
Cached Biology Technology:Pharmacyclics Reports Recent Developments and Financial Results for Fiscal Second Quarter 2011 2Pharmacyclics Reports Recent Developments and Financial Results for Fiscal Second Quarter 2011 3Pharmacyclics Reports Recent Developments and Financial Results for Fiscal Second Quarter 2011 4Pharmacyclics Reports Recent Developments and Financial Results for Fiscal Second Quarter 2011 5Pharmacyclics Reports Recent Developments and Financial Results for Fiscal Second Quarter 2011 6Pharmacyclics Reports Recent Developments and Financial Results for Fiscal Second Quarter 2011 7Pharmacyclics Reports Recent Developments and Financial Results for Fiscal Second Quarter 2011 8Pharmacyclics Reports Recent Developments and Financial Results for Fiscal Second Quarter 2011 9New nanomaterials unlock new electronic and energy technologies 2
Collected from 8-12 week old sexually mature rats. Pricing: $100/unit for 1 - 10 units...
PlusOne Acrylamide PAGE, 1 kg. Category: Electrophoresis Systems & Standards & Reagents, Electrophoresis Standards and Reagents, Gel Casting Chemicals....
... Kit is one of the most ... of RNA in solution. The ... than absorbance measurements. As little as ... fluorescence microplate readers and fluorometers using ...
... The GenoStat Inducible Expression System provides tightly ... mammalian cells and is capable of repeated ... is mediated by the highly specific interaction ... bipartite nuclear receptor complex. Gene expression levels ...
Biology Products: