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Primeur weekly 2016-12-12

Crowd computing

New TN-Grid platform is hosting gene@home ...

Quantum computing

Further improvement of qubit lifetime for quantum computers ...

Focus on Europe

Cray works with Microsoft and CSCS to reach new performance milestone for deep learning at scale ...

PHENOMEN project to lay the foundations for a new age of information processing ...

Research into the theoretical bases of future wireless communications ...

Mont-Blanc project Event ARM: On the road to HPC ...

Middleware

Allinea webinar targets I/O optimization ...

Hardware

Mellanox's EDR 100Gb/s InfiniBand accelerates the largest National Institute of Health supercomputer ...

Mellanox announces record breaking performance enabling stateful packet processing at 400Gb/s with the NPS-400 network processor ...

Atos achieves SAP HANA certification for its bullion server operating up to 16TB of data ...

NVIDIA delivers AI supercomputer to Berkeley ...

New tender for the SURFnet8 service layer published ...

High performance graphene photodetectors set speed record ...

Applications

Scientists take 'blue-action' to help society cope with the impacts of Arctic climate changes ...

Eight new eScience projects to start in 2017 ...

University of Wyoming Faculty supercomputer use deadline is December 23, 2016 ...

Collaborating on Big Data to unravel disease processes ...

Weather the storm: Improving Great Lakes modelling ...

What to do with the data? ...

Big Data approach to water quality applied at shale drilling sites ...

The Cloud

Amazon Web Services Cloud now available to customers from data centres in Canada ...

Weather the storm: Improving Great Lakes modelling


Air and water interactions are a key component of Great Lakes weather and climate. A new supercomputer model better connects these processes to create more accurate forecasts. Credit: Michigan Tech, Sarah Bird.
21 Nov 2016 Houghton - Up until now, atmospheric models and hydrodynamic models have remained separate to a large extent in the Great Lakes region, with only a few attempts to loosely couple them. In a new study, published online in theJournal of Climate, an integrated model brings together climate and water models.

The collaborative work is the product of researchers from Michigan Technological University, Loyola Marymount University, LimnoTech and the National Oceanic and Atmospheric Administration's Great Lakes Environmental Research Laboratory. Pengfei Xue, an assistant professor of civil and environmental engineering at Michigan Tech, led the study through his work at the Great Lakes Research Center on campus.

"One of the important concepts in climate change, in addition to knowing the warming trend, is understanding that extreme events become more severe", Pengfei Xue stated. "That is both a challenge and an important focus in regional climate modelling."

To make those connections, the model specifically uses two-way coupling and 3-dimensional modelling to connect atmospheric and lake body interactions. Two-way coupling is like a two-way street and enables feedback between variables; other models use preset inputs that act more like one-way streets. Current models also rely on 1D lake models that cannot account for the dynamic nature of hydrologic processes in bodies of water as large as the Great Lakes.

For comparison, most widely used global climate models use only tens of grid points (roughly 0.5 degree resolution) to cover all of the Great Lakes, if they account for the lakes at all. To create a more nuanced view, like what has been accomplished already in ocean coastline modelling, the new model simulates the hydrodynamics of the Great Lakes region with 3D hydrodynamic model constructed of 40 vertical layers and 2-kilometer horizontal grid resolution. That's roughly 50,000 grids for each layer, which enables feedback between air and water data.

The datasets used are so large that they can only run on a supercomputer. Pengfei Xue uses the Superior supercomputer at the Great Lakes Research Center. Pengfei Xue and his team vetted the model's accuracy by comparing its simulations to historical records and satellite data.

"This kind of approach has been recognized as a critical step in the Great Lakes region that has been building over the past decade", Pengfei Xue stated.

The next stage of the research will expand the model to include surface water runoff. Refining the model is a community effort, and the team plans to work with current collaborators to apply and test the limits of the model.

In its current version, the new model provides better footing to further Great Lakes research. By doing so, scientists will glean more information about everything from regional climate change and shipping to oil spill mitigation and invasive species.

The paper is titled " Improving the Simulation of Large Lakes in Regional Climate Modeling: Two-way Lake-atmosphere Coupling with a 3-D Hydrodynamic Model of the Great Lakes ".

Source: Michigan Technological University

Back to Table of contents

Primeur weekly 2016-12-12

Crowd computing

New TN-Grid platform is hosting gene@home ...

Quantum computing

Further improvement of qubit lifetime for quantum computers ...

Focus on Europe

Cray works with Microsoft and CSCS to reach new performance milestone for deep learning at scale ...

PHENOMEN project to lay the foundations for a new age of information processing ...

Research into the theoretical bases of future wireless communications ...

Mont-Blanc project Event ARM: On the road to HPC ...

Middleware

Allinea webinar targets I/O optimization ...

Hardware

Mellanox's EDR 100Gb/s InfiniBand accelerates the largest National Institute of Health supercomputer ...

Mellanox announces record breaking performance enabling stateful packet processing at 400Gb/s with the NPS-400 network processor ...

Atos achieves SAP HANA certification for its bullion server operating up to 16TB of data ...

NVIDIA delivers AI supercomputer to Berkeley ...

New tender for the SURFnet8 service layer published ...

High performance graphene photodetectors set speed record ...

Applications

Scientists take 'blue-action' to help society cope with the impacts of Arctic climate changes ...

Eight new eScience projects to start in 2017 ...

University of Wyoming Faculty supercomputer use deadline is December 23, 2016 ...

Collaborating on Big Data to unravel disease processes ...

Weather the storm: Improving Great Lakes modelling ...

What to do with the data? ...

Big Data approach to water quality applied at shale drilling sites ...

The Cloud

Amazon Web Services Cloud now available to customers from data centres in Canada ...