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

no clear change in frequency.

Sahara/Sahel- and West African monsoon - The amount of rainfall is closely related to vegetation climate feedback and sea surface temperatures of the Atlantic Ocean. Greenhouse gas forcing is expected to increase Sahel rainfall. But a global mean warming of three to five degrees Celsius could cause a collapse of the West African monsoon. This could lead either to drying of the Sahel or to wetting due to increased inflow from the West. A third scenario shows a possible doubling of anomalously dry years by the end of the century.

Indian summer monsoon - The monsoon circulation is driven by a land-to-ocean pressure gradient. Greenhouse warming tends to strengthen the monsoon since warmer air can carry more water. Air pollution and land-use that increases the reflection of sunlight tend to weaken it. The Indian summer monsoon could become erratic and in the worst case start to chaotically change between an active and a weak phase within a few years.

Lowly sensitive tipping elements, intermediate uncertainty:

Atlantic thermohaline circulation - The circulation of sea currents in the Atlantic Ocean is driven by seawater that flows to the North Atlantic, cools and sinks at high latitudes. If the inflow of freshwater increases, e.g. from rivers or melting glaciers, or the seawater is warmed, its density would decrease. A global mean warming of three to five degrees Celsius could push the element past the tipping point so that deep water formation stops. Under these conditions the North Atlantic current would be disrupted, sea level in the North Atlantic region would rise and the tropical rain belt would be shifted.


'/>"/>

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:7/25/2014)... broad-scale estimate of air pollution removal by trees nationwide, ... are saving more than 850 human lives a year ... While trees, pollution removal equated to an average air ... of that improvement are substantial. Researchers valued the human ... $7 billion every year in a study published recently ...
(Date:7/25/2014)... 100,000s of people lived on the land now called ... control the availability of plants they used for food, ... fire to maintain desired habitat and natural resources. , ... Pacific Southwest Station, will lead a field trip ... the Ecological Society of America,s 99th Annual Meeting, in ...
(Date:7/25/2014)... scars on this false-color image from the Terra satellite show ... rash of wildfires in Eastern Russia. The burn scars ... background. The wildfires have broken across the remote parts ... this false-color image from the MODIS instrument, it is ... that continue. Two recent image features noted below show the ...
Breaking Biology News(10 mins):First national study finds trees saving lives, reducing respiratory problems 2Fire ecology manipulation by California native cultures 2Fire ecology manipulation by California native cultures 3
(Date:7/25/2014)... Albany, NY (PRWEB) July 26, 2014 ... Trials Review, H2, 2014" provides data on the ... This report provides elemental information and data relating ... Cerebral Stroke. , View full global Ischemic Stroke ... It includes an overview of the trial numbers ...
(Date:7/25/2014)... July 25, 2014 Amgen (NASDAQ: ... declared a $0.61 per share dividend for the third ... Sept. 5, 2014, to all stockholders of record as ... About Amgen Amgen is committed to ... serious illnesses by discovering, developing, manufacturing and delivering innovative ...
(Date:7/25/2014)... in each person,s digestive tract. Scientists believe that some ... harmful infections, but their role in human health is ... the role of these bacteria, a team of researchers ... fluctuations in the bacterial populations of two research subjects ... July 25 issue of the journal Genome Biology ...
(Date:7/25/2014)... University of Leicester has furthered our understanding of ... create new materials using nanosized ,building blocks,. , ... prestigious academic journal Physical Review Letters , ... rich detail the structure and internal atomic motion ... and a single helium atom. , The technique ...
Breaking Biology Technology:Ischemic Stroke and Cerebral Stroke Global Clinical Trials Review H2, 2014: MarketResearchReports.Biz 2Ischemic Stroke and Cerebral Stroke Global Clinical Trials Review H2, 2014: MarketResearchReports.Biz 3Amgen Announces 2014 Third Quarter Dividend 2Amgen Announces 2014 Third Quarter Dividend 3Monitoring the rise and fall of the microbiome 2Monitoring the rise and fall of the microbiome 3Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 2Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 3
... Pittsburgh as I returned from Thanksgiving celebrations. That can only mean ... be far away. This season, the tech industry has a sack ... my favorites. , , FOR THE NETWORKED HOME THAT HAS (ALMOST) ... the Mirra Personal Server is among the most elegant and useful ...
... the UW-Madison survive as a public university when public ... , ,Thats the question being posed these days by ... as a catalyst for Wisconsins high-tech, high-growth economy will ... ,Wiley also believes the university will become less accessible ...
... MILWAUKEE -- Capital Data, Inc., a provider ... today that it is now a Sun Microsystems iForce ... successful completion of advanced training in Sun technology by ... in this region since 1989, we are delighted to ...
Cached Biology Technology:Holiday Tech Gizmo's to Give and Get 2UW-Madison Chancellor Wiley Challenges State to Think About Universitys Future 2UW-Madison Chancellor Wiley Challenges State to Think About Universitys Future 3
... The Turn & Cast submarine gel systems used gasketed ... the gel in the tank. Turn it back and ... For added convenience, each Turn & Cast tray is ... near the edge of the tray and one in ...
The Holten Safe 2010 Class II Biological Safety Cabinets provide the most ergonomical working condition of comfort while incorporating the latest technology for safety, efficiency and performance....
... a dedicated fluorometer with sensitivity ... of assays in industrial and ... applications. Cell biology, immunology and ... application areas. Robot-friendly hardware and ...
... series of Class II Biological Safety ... certification to the world's highest safety ... the cabinets cannot be adjusted out ... low noise and arm rest ensure ...
Biology Products: