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Primeur weekly 2016-10-10

Exascale supercomputing

The incredible shrinking particle accelerator ...

Brookhaven Lab to play major role in 2 DOE exascale computing application projects ...

Quantum computing

More stable qubits in perfectly normal silicon ...

Focus on Europe

RSC supercomputers go West ...

Hardware

Allinea tools play vital role in advancing computational research at the VSC, Austria's largest HPC facility ...

Smallest transistor ever ...

Turning to the brain to reboot computing ...

Complex materials can self-organize into circuits, may form basis for multifunction chips ...

Wireless data centre on a chip aims to cut energy use ...

Adapteva announces 28nm 64-core Epiphany-IV microprocessor chip ...

SGI introduces unique scale-out solution for SAP HANA that protects investments when moving to real-time business ...

Applications

Clemson University scientists receive $1.8 million grant to combat Type 2 diabetes ...

Climate change intensifies night-time storms over Lake Victoria ...

Computer simulations explore how Alzheimer's disease starts ...

Rice University lab explores cement's crystalline nature to boost concrete performance ...

Rice University researchers say 2D boron may be best for flexible electronics ...

Large animals, such as the imperious African elephant, most vulnerable to impact of human expansion ...

Computer simulation finds dangerous molecule activity for ageing ...

Tornadogenesis ...

As hurricane heads up coast, a RENCI supercomputer swings into action ...

New drug candidate may reduce deficits in Parkinson's disease ...

XSEDE allocations awarded to 155 research teams across U.S. ...

OSC part of NSF-funded consortium for advancing research computing practices ...

NCSA awarded NSF grant to expand computational science education in food, energy, and water ...

Crosstalk analysis of biological networks for improved pathway annotation ...

The Cloud

Nimbix collaborates with IBM and NVIDIA to launch powerful GPU Cloud offering ...

Climate change intensifies night-time storms over Lake Victoria


Climate change intensifies night-time storms over Lake Victoria. Credit: KU Leuven - Wim Thiery.
6 Oct 2016 Leuven - Lake Victoria in East Africa will become a hotspot for hazardous thunderstorms due to climate change. This is shown by an international study led by KU Leuven. The findings were published inNature Communications.

Lake Victoria is divided among Uganda, Kenya, and Tanzania. With a surface close to 70,000 km2, it is the biggest lake in Africa. The lake is also a notoriously dangerous place for the 200,000 people who go fishing there at night. The International Red Cross estimates that between 3,000 and 5,000 fishermen per year lose their lives in violent storms on the lake.

That Lake Victoria can be so stormy at night is related to the circulation in the atmosphere above the enormous water surface, explained climate scientist Wim Thiery, who is affiliated with both KU Leuven and ETH Zürich.

"During the day, a breeze develops that flows from the cool water towards the warm land. At night, we see the opposite: the land breeze flows away from the cooling land towards the warmer lake. As the lake is shaped like a circle, these land breezes from all directions converge above the lake. Add evaporation to this cocktail and you get a lot of storms, rain, wind, and waves."

Wim Thiery was able to provide scientific evidence for this pattern in collaboration with American space agency NASA: "Thanks to new NASA satellite products we were able to map the number of hazardous thunderstorms and their locations in East Africa - every 15 minutes for a period ranging from 2005 to 2013. During the day, most storms rage over the surrounding land, especially the typical afternoon thunderstorms that are caused by local upsurges of warm air. At night, these storms concentrate above Lake Victoria."

To predict the impact of climate change on this process, Wim Thiery also ran climate simulations using an advanced computer model: "If we start from a business-as-usual scenario, whereby the emission of greenhouse gases continues to increase, the extreme amounts of rainfall over Lake Victoria will increase by twice as much as the rainfall over the surrounding land. As a result, the lake will become a hotspot for night-time storms. Superstorms that occur only once every 15 years today will occur almost every year by the end of the century."

The scientists plan to do further research to optimize existing warning systems for local fishermen: "Our results make it possible to better predict extreme storms over the lake and to reduce the vulnerability of the local fishermen. In the meantime, we have already developed a prototype of a new warning system."

Source: KU Leuven

Back to Table of contents

Primeur weekly 2016-10-10

Exascale supercomputing

The incredible shrinking particle accelerator ...

Brookhaven Lab to play major role in 2 DOE exascale computing application projects ...

Quantum computing

More stable qubits in perfectly normal silicon ...

Focus on Europe

RSC supercomputers go West ...

Hardware

Allinea tools play vital role in advancing computational research at the VSC, Austria's largest HPC facility ...

Smallest transistor ever ...

Turning to the brain to reboot computing ...

Complex materials can self-organize into circuits, may form basis for multifunction chips ...

Wireless data centre on a chip aims to cut energy use ...

Adapteva announces 28nm 64-core Epiphany-IV microprocessor chip ...

SGI introduces unique scale-out solution for SAP HANA that protects investments when moving to real-time business ...

Applications

Clemson University scientists receive $1.8 million grant to combat Type 2 diabetes ...

Climate change intensifies night-time storms over Lake Victoria ...

Computer simulations explore how Alzheimer's disease starts ...

Rice University lab explores cement's crystalline nature to boost concrete performance ...

Rice University researchers say 2D boron may be best for flexible electronics ...

Large animals, such as the imperious African elephant, most vulnerable to impact of human expansion ...

Computer simulation finds dangerous molecule activity for ageing ...

Tornadogenesis ...

As hurricane heads up coast, a RENCI supercomputer swings into action ...

New drug candidate may reduce deficits in Parkinson's disease ...

XSEDE allocations awarded to 155 research teams across U.S. ...

OSC part of NSF-funded consortium for advancing research computing practices ...

NCSA awarded NSF grant to expand computational science education in food, energy, and water ...

Crosstalk analysis of biological networks for improved pathway annotation ...

The Cloud

Nimbix collaborates with IBM and NVIDIA to launch powerful GPU Cloud offering ...