HOME >> BIOLOGY >> NEWS
West African Ocean sediment core links monsoons to global climate evolution

(Santa Barbara, Calif.) -- Monsoons, the life-giving, torrential rains of Asia and Africa, have an ancient, unsuspected connection to previous Ice Age climate cycles, according to scientists at the University of California, Santa Barbara, and at Kiel University in Germany.

Analyzing a 120-foot sediment core from the Gulf of Guinea in equatorial West Africa recovered by a German research expedition, UC Santa Barbara postdoctoral scholar Syee Weldeab and paleoclimatologist David Lea have revealed 155,000 years of continuous monsoon history. It is the longest, most detailed record of West African monsoons that has ever been reconstructed, said Lea. The find captured several Ice Age climate cycles.

From chemical data locked into fossil plankton shells, the researchers documented how the strength of ancient monsoons is directly tied to two factors: the Northern Hemispheres climate shifts due to the expansion and contraction of the European and North American continental ice sheets, and the amount of local solar radiation hitting the African region.

This is the first study to definitively tie together the influence of these two factors over several climate cycles, said Lea, who has published the collaborative results in the June 1 issue of the journal Science under the heading 155,000 Years of West African Monsoon and Ocean Thermal Evolution. He noted that there is a dramatic resurgence of the West African monsoon at the end of each glacial cycle.

The studys importance to the modern climate, said Lea, lies in its demonstration of the sensitivity of the monsoon region to global climate conditions. With hundreds of millions of people dependent on subsistence agriculture in these regions, he said, Insights from the study of ancient climate cycles will lead to more confident predictions of how monsoon patterns will evolve in a future warmed by greenhouse gases.


'"/>

Contact: Vic Cox
vic.cox@ia.ucsb.edu
805-893-4765
University of California - Santa Barbara
31-May-2007


Page: 1

Related biology news :

1. Clues to future evolution of HIV come from African green monkeys
2. First all-African produced genetically engineered maize is resistant to maize streak virus
3. New clue why MS affects African-Americans differently than Caucasians
4. Stressed-out African naked mole-rats may provide clues about human infertility
5. Slow wave activity during sleep is lower in African-Americans than Caucasians
6. OSA symptoms more common among African-American women than Caucasians
7. African carnage -- 1 years seized ivory likely came from 23,000 elephants
8. Survey finds perceived risk of recurrence low in African-American breast cancer survivors
9. African-Americans at increased risk for earlier preterm births
10. Missouris African-American mothers more likely to deliver prematurely
11. Study provides first genetic evidence of long-lived African presence within Britain

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/21/2020)... (PRWEB) , ... August 19, 2020 , ... ... Salimetrics LLC and SalivaBio LLC, businesses dedicated to Salivary Bioscience for more than ... the recently published book by Springer, " Salivary Bioscience: Foundations of Interdisciplinary Saliva ...
(Date:8/21/2020)... ... August 20, 2020 , ... NDA Partners Chairman ... Operations executive with expertise in clinical trial planning and feasibility, regulatory inspection readiness, ... Consultant. Throughout his career, Mr. Movahhed has helped design and manage oncology, neurology, ...
(Date:8/12/2020)... SEATTLE (PRWEB) , ... August 12, 2020 , ... ... tracking and monitoring systems that are ideal for public health agencies of all ... containing contagious diseases and helping at-risk individuals find appropriate health care, Mosio helps ...
Breaking Biology News(10 mins):
(Date:8/12/2020)... ... August 11, 2020 , ... ... is making available for free its new white paper – Simulated Transport ... testing into today’s biologics licensing application (BLA). In response, Modality Solutions shares ...
(Date:8/3/2020)... ... August 03, 2020 , ... ... Corrigan, President and CEO has been named one of the 100 most inspiring ... sectors, PharmaVoice 100 honorees are selected based on how they have inspired their ...
(Date:7/31/2020)... COLLEGE STATION, Texas (PRWEB) , ... July 29, ... ... pre-qualified cleanroom solutions today announced the launch of its new tagline, “BUILDING FOR ... within the biopharmaceutical industry and around the globe, requiring fast track capacity to ...
(Date:7/31/2020)... N.J (PRWEB) , ... July 29, 2020 , ... ... company, and Catalent, the leading global provider of advanced delivery technologies, development, and ... today announced that they have entered into a strategic partnership whereby Catalent will ...
Breaking Biology Technology:
Cached News: