Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Modern physics is critical to global warming research

13.03.2008
Science has come a long way with predicting climate. Increasingly sophisticated models and instruments can zero in on a specific storm formation or make detailed weather forecasts – all useful to our daily lives.

But to understand global climate change, scientists need more than just a one-day forecast. They need a deeper understanding of the complex and interrelated forces that shape climate.

This is where modern physics can help, argues Brad Marston, professor of physics at Brown University. Marston is working on sets of equations that can be used to more accurately explain climate patterns. Marston will explain his research as part of a panel discussion titled “The Physics of Climate and Climate Change,” scheduled for 2:30 p.m. on March 11, 2008, at the American Physical Society’s meeting in New Orleans. Marston will also take part in a 1 p.m. press conference prior to the presentation.

“Climate is a statement about the statistics of weather, not the day-to-day or minute-by-minute fluctuations,” Marston said. “That’s really the driving concept. We know we can’t predict the weather more than a couple of weeks out. But we can turn that to our advantage, by using statistical physics to look directly at the climate itself.”

Take the drying of Lake Mead in the western United States. Scientists think the lake, which straddles Nevada and Arizona, may already be getting less rain due to shifting weather patterns caused by a warming world. Computer models can follow those rainfall patterns and forecast the likely effects on the lake. But current models obscure the larger mechanisms – such as shifting storm tracks – that can drive changes in rainfall.

“If we’re just mesmerized by the details of the model,” Marston said, “we could be missing the big picture of why it’s happening.”

Marston’s statistical approach can be used to help crack the code of complicated, dynamic atmospheric processes poorly understood through models, such as convection, cloud formation, and macroturbulence, which refers to the currents, swirls and eddies in the global atmosphere. More fundamentally, Marston said this approach can help to deepen understanding of what is happening in today’s climate and what those changes can mean for climate in the future.

“We’re trying to make the models more robust, to give better insights into what is actually going on,” he said.

Marston’s research, on which he teamed with former Brown undergraduate Emily Conover and Tapio Schneider of the California Institute of Technology, was selected last fall for publication in the Journal of the Atmospheric Sciences. Marston’s ultimate research goal is to create a more realistic rendering of the global atmospheric system that can be used to understand the atmosphere of the past and to gauge future changes.

“We’re improving the statistical methods themselves, so that they’re more accurate,” Marston said. “At the same time we are applying the methods to progressively more complete models of the Earth’s atmosphere.”

Richard Lewis | EurekAlert!
Further information:
http://www.brown.edu

More articles from Earth Sciences:

nachricht Six-decade-old space mystery solved with shoebox-sized satellite called a CubeSat
15.12.2017 | National Science Foundation

nachricht NSF-funded researchers find that ice sheet is dynamic and has repeatedly grown and shrunk
15.12.2017 | National Science Foundation

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: First-of-its-kind chemical oscillator offers new level of molecular control

DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.

Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...

Im Focus: Long-lived storage of a photonic qubit for worldwide teleportation

MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.

Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...

Im Focus: Electromagnetic water cloak eliminates drag and wake

Detailed calculations show water cloaks are feasible with today's technology

Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...

Im Focus: Scientists channel graphene to understand filtration and ion transport into cells

Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.

To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...

Im Focus: Towards data storage at the single molecule level

The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.

Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

Engineers program tiny robots to move, think like insects

15.12.2017 | Power and Electrical Engineering

One in 5 materials chemistry papers may be wrong, study suggests

15.12.2017 | Materials Sciences

New antbird species discovered in Peru by LSU ornithologists

15.12.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>