Featured Research

from universities, journals, and other organizations

New Models Of Weather Pattern

Date:
December 9, 2005
Source:
University of California - Davis
Summary:
For a mathematician, Joseph Biello spends a lot of time thinking about the weather. But the UC Davis assistant professor isn't looking out the office window. He is using mathematical theory to build a model of the Madden-Julian Oscillation, a tropical weather pattern that influences drought and rainfall in the western US.

For a mathematician, Joseph Biello spends a lot of time thinking about the weather. But the UC Davis assistant professor isn't looking out the office window. He is using mathematical theory to build a model of the Madden-Julian Oscillation, a tropical weather pattern that influences drought and rainfall in the western U.S.

Related Articles


The Madden-Julian Oscillation was discovered in 1972 when researchers looked closely at meteorological data. It lasts 30 to 60 days and appears as clusters of tropical thunderstorms over the Indian Ocean before sweeping eastward into the Pacific, where it dissipates.

Measured in weeks, the Madden-Julian Oscillation lies in a gray area between short-term weather forecasts and long-term climate studies, said Bryan Weare, a professor of meteorology at UC Davis who also studies the phenomenon. A better understanding of the weather pattern would help with medium-range weather and climate forecasting.

Weare is trying to understand, for example, the conditions that cause the oscillation to begin over the Indian Ocean. Once the oscillation is under way, you can use it to make predictions about weather phenomena over a month or so, he said. But how it occurs in the first place is not well understood. So far, his work supports theories that link surface moisture over the ocean to thunderstorms, he said.

The phenomenon has subtle effects on weather in the U.S. There is a link between days of very intense rainfall on the West Coast and rainfall associated with a Madden-Julian Oscillation near the equator, Weare said. On the other hand, Biello said that there also seems to be a link between a strong oscillation and a general drought on the West Coast.

So far this winter, the Madden-Julian Oscillation appears to be weak, according to data from the National Weather Service. But the oscillation can occur several times over the winter months.

To understand the weather, you have to look at processes at vastly different scales of space and time, Biello said.

"To understand the Earth, you have to understand raindrops," he said. Biello's specialty is to build mathematical models that incorporate these different scales. Often, weather and climate models divide the planet into a grid of squares, kilometers across, and look at how those squares interact. But that means making assumptions about what is going on within the squares, Biello said.


Story Source:

The above story is based on materials provided by University of California - Davis. Note: Materials may be edited for content and length.


Cite This Page:

University of California - Davis. "New Models Of Weather Pattern." ScienceDaily. ScienceDaily, 9 December 2005. <www.sciencedaily.com/releases/2005/12/051209113433.htm>.
University of California - Davis. (2005, December 9). New Models Of Weather Pattern. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2005/12/051209113433.htm
University of California - Davis. "New Models Of Weather Pattern." ScienceDaily. www.sciencedaily.com/releases/2005/12/051209113433.htm (accessed December 21, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Sunday, December 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Lava on Track to Hit Hawaii Market

Raw: Lava on Track to Hit Hawaii Market

AP (Dec. 19, 2014) Lava from an active volcano on Hawaii's Big Island slowed slightly but stayed on track to hit a shopping center in the small town of Pahoa. (Dec. 19) Video provided by AP
Powered by NewsLook.com
Birds Might Be Better Meteorologists Than Us

Birds Might Be Better Meteorologists Than Us

Newsy (Dec. 19, 2014) A new study suggests a certain type of bird was able to sense a tornado outbreak that moved through the U.S. a day before it hit. Video provided by Newsy
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Arctic Warming Twice As Fast As Rest Of Planet

Arctic Warming Twice As Fast As Rest Of Planet

Newsy (Dec. 18, 2014) The Arctic is warming twice as fast as the rest of the planet, thanks in part to something called feedback. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins