Navigation Links
Africa to take it on chin again with climate change

drought in a surrounding ring that includes southern Africa.

"In our models, the Indian Ocean shows very clear and dramatic warming into the future, which means more and more drought for southern Africa," says Hurrell. "It is consistent with what we would expect from an increase in greenhouse gases."

Hurrell and Hoerling compared model results from 1950-99 to several control runs that omitted the Indian Ocean warming. None of those runs showed the magnitude of drying that actually occurred in southern Africa. When the models did include the Indian Ocean warming, southern Africa consistently dried out. The models also project that by 2049, monsoons across southern Africa could be 10% to 20% drier than the 1950-99 average.

A different process appears to shape rainfall in the Sahel. When sea-surface temperatures are warmer in the South Atlantic than in the North, it pulls the Sahelian monsoon cycle south as well, depriving the region of its usual rains.

"This was the situation during much of the latter half of the 20th century." says Hurrell. "We believe the North Atlantic Ocean cooling was natural and masked an expected greenhouse-gas warming effect."

Since 1990, the sea-surface temperature pattern has reversed, warming more rapidly in the North Atlantic than in the South. The models examined by Hurrell and Hoerling show this trend intensifying in future decades. They project that the Sahel monsoon will be some 20% to 30% wetter by 2049 compared to the 1950-99 average.

The warming of Indian Ocean waters is well beyond the range expected from natural processes. This strengthens the case that greenhouse gases are involved, says Hurrell. In the Atlantic, natural variability affects ocean temperatures more strongly, making it more difficult to attribute changes there to greenhouse-gas effects.

Paleoclimate records show that even greater climate swings have occurred in Africa's monsoons, most likely related to past v
'"/>

Source:NSF


Page: 1 2 3

Related biology news :

1. New push for public health, AIDS spending at African Union summit
2. A comprehensive response to HIV could prevent 10 million AIDS deaths in Africa by 2020
3. Scientists discuss improved biopesticides for locust control in West Africa
4. Reducing malarial transmission in Africa
5. Scientists journey to southern Africa to unravel the secret world of elephant communication
6. Study reveals dramatic difference between breast cancers in US and Africa
7. South African Tribunal Asks For Damages Estimates in GSK AIDS Drug Case
8. Researchers find new giant amphibian fossils in Africa
9. A New Species of Monkey is Discovered in Tanzania: The First in Africa for More Than 20 Years
10. Six million Africans face famine because of locusts, drought
11. Study of energy and health in Africa focuses spotlight on charcoal and forest management
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Africa take chin again with climate change

(Date:8/21/2014)... A team of researchers at Louisiana ... for using affordable, consumer-grade 3D printers and ... can contain antibacterial and chemotherapeutic compounds for ... of doctoral students and research faculty from ... programs collaborated to create filament extruders that ...
(Date:8/20/2014)... Fox, a John and Rebecca Moores Professor of Biology and ... fellow in the International Society for the Study of the ... four members two from the U.S., one from France ... Fellows are elected every three years, and 36 have been ... than 20 countries, the ISSOL includes researchers from disciplines as ...
(Date:8/20/2014)... , Aug. 20, 2014 /CNW/ -  Issue ... and can quickly become life threatening for some children.    ... as 1.2 million Canadians have food allergies and this number ... cent of children are estimated to have food allergies.  ... mild skin irritations and hives to breathing difficulties and loss ...
Breaking Biology News(10 mins):Louisiana Tech University researchers use 3D printers to create custom medical implants 2Louisiana Tech University researchers use 3D printers to create custom medical implants 3UH professor named fellow by International Astrobiology Society 2Information Update - Allergens and food safety at school - What's in your child's lunch? 2Information Update - Allergens and food safety at school - What's in your child's lunch? 3
... at Albert Einstein College of Medicine of Yeshiva University ... from the Bill & Melinda Gates Foundation for their ... are Arturo Casadevall , M.D., Ph.D., who is working to ... , Ph.D., and Joan Berman , Ph.D., for their work ...
... Joseph G. Morse , a professor of entomology ... year,s recipient of the California Citrus Quality Council ... of "his steadfast dedication in the field of entomology ... For more than three decades, Morse has provided ...
... led by the University of Colorado Boulder has been awarded $9.2 ... research modifying E. coli to produce biofuels such as ... we have worked on for the past decade to the next ... and Sustainable Energy Institute, or RASEI. "In this project, we will ...
Cached Biology News:Einstein researchers receive 2 Grand Challenges Explorations grants to combat HIV and TB 2Einstein researchers receive 2 Grand Challenges Explorations grants to combat HIV and TB 3UC Riverside entomologist recognized for research in citrus entomology 2CU-led team receives $9.2 million DOE grant to engineer E. coli into biofuels 2
(Date:8/22/2014)... 22, 2014 Research and Markets ... Biology Enzymes, Kits, & Reagents (Cloning, Epigenetics, PCR, Restriction ... to their offering. The global molecular ... 2013, and is expected to grow at a CAGR ... biology enzymes, kits, & reagents find applications in a ...
(Date:8/22/2014)... Toronto, Canada (PRWEB) August 22, 2014 ... traits in model organisms can be accelerated by ... design and manufacturing technologies, the custom SeqCap EZ ... such research. , Mr. Watson will additionally present ... seen with commercially available human and mouse exome ...
(Date:8/21/2014)... 21, 2014 DNA vaccine pioneer ... its development of JRC-LAMP-vax, an innovative and safe potential ... IC studies began this month in Hawaii, moving the ... , The Japanese red cedar releases pollen that causes ... Mountain Cedar pollen wreaks similar havoc in Colorado, New ...
(Date:8/21/2014)... 21, 2014 2014 Deep ... is a professional and in-depth research report ... provides basic Seaweed Fertilizer information, including Seaweed ... structure as well as industry overview. This ... domestic market as well as global industry ...
Breaking Biology Technology:Global Molecular Biology Enzymes, Kits, & Reagents (Cloning, Epigenetics, PCR, Restriction Digestion, Sequencing) Market - Forecast to 2018 2Global Molecular Biology Enzymes, Kits, & Reagents (Cloning, Epigenetics, PCR, Restriction Digestion, Sequencing) Market - Forecast to 2018 3Efficient Identification of Protein-Coding Variants in a Model Organism Through Exome Sequencing, New Webinar Hosted by Xtalks 2Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 2Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 3Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 4Internationals Seaweed Fertilizer Industry 2014 Development Trend Analysis in New Research Study at DeepResearchReports.com 2Internationals Seaweed Fertilizer Industry 2014 Development Trend Analysis in New Research Study at DeepResearchReports.com 3
... Tech Coast Angels (TCA) today announced that Mike ... Board of Directors. Napoli has been a member of TCA ... Network Executive Committee for seven years, started the Inland Empire ... three years, and was chairman of two TCA Fast Pitch ...
... 2011 Cell Therapeutics, Inc. (CTI) (Nasdaq and MTA: ... WBBA Life Science Innovation Northwest Conference on Thursday, March ... of the Washington State Conference Center, Seattle, Washington. WBBA ... 201110:25 AM PST/1:25 PM EST/7:25 PM CETRoom 607, Washington ...
... of biomass to fuel requires several steps: chemical pretreatment ... acid, detoxification to remove the toxic chemicals required in ... to fuels. Virginia Tech researchers have discovered an enzyme ... infused liquid biomass (hydrolysate), meaning that the detoxification step ...
Cached Biology Technology:Mike Napoli Named New Chairman of Tech Coast Angels, Explains Enhanced Process for Entrepreneurs 2Mike Napoli Named New Chairman of Tech Coast Angels, Explains Enhanced Process for Entrepreneurs 3Enzyme cocktail could eliminate a step in biofuel process 2
Anti-Kusabira Orange Monoclonal Antibody Description: 100 g Research Focus: tag Storage: -20C Shipping Temperature: 4C...
TXNL2 Antibody...
Rat polyclonal to Vitamin B3 ( Abpromise for all tested applications). Antigen: Chemical / Small Molecule, Vitamin B3 conjugated to BSA....
Rabbit polyclonal to CAMK 1D beta ( Abpromise for all tested applications). entrezGeneID: 57118 SwissProtID: Q5SQQ7...
Biology Products: