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Chasing 'Thundersnow' Could Lead To More Accurate Forecasts

Date:
January 15, 2009
Source:
University of Missouri-Columbia
Summary:
The job of one researcher could chill to the bone, but his research could make weather predicting more accurate. He is chasing storms in the dead of winter in order to release weather balloons that will produce data about the little-known phenomenon of thundersnow.

University of Missouri researchers are releasing weather balloons that will produce data about the little-known phenomenon of thundersnow.
Credit: University of Missouri

The job of one University of Missouri researcher could chill to the bone, but his research could make weather predicting more accurate. Patrick Market, associate professor of atmospheric science in the College of Agriculture, Food and Natural Resources, is chasing storms in the dead of winter in order to release weather balloons that will produce data about the little-known phenomenon of thundersnow.

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"One of the things we don't understand is how the cloud becomes electrified," Market said. "We hope to determine how the atmosphere is becoming unstable."

Market and his storm-chasing students are searching for winter storms in order to release weather balloons into the storm every 90 minutes over a 24-hour period. The balloons carry boxes with a barometer to measure pressure, a thermometer to measure temperature, and a hydrometer to measure humidity. Market uses a GPS to monitor wind speed and direction of the balloons. This information covers the five things that are most important for a meteorologist to know for accurate predictions, according to Market.

"It has been decades since a detailed study with modern weather balloons has been done to see how the atmosphere destabilizes for summer thunderstorms, much less the winter storms," Market said. "So we are taking this tried-and-true tool of the meteorology trade and applying it to the very specific instance of heavy snowfall in the winter."

Once the weather balloons are launched, they provide detailed readings of every layer of the atmosphere. More detailed readings and data provide better and more accurate forecasting.

"We get thunderstorms in all seasons. That means something is making the atmosphere unstable," Market said. "Thunderstorms are often associated with heavy rainfall or heavy snowfall. It's just as important to get it right in the spring, summer or winter."

The phenomenon known as thundersnow is not understood very well. It is defined as a snowstorm with thunder and lightning that can bring heavy snowfalls of 8 to 12 inches. Tracking such storms can be quite a challenge.

"Often, these winter storms cause us to travel through inclement weather in order to get to the area where the weather balloons should be launched," Market said. "During travel, the heater in the vehicle cannot be on because the instruments need to be kept cold."


Story Source:

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


Cite This Page:

University of Missouri-Columbia. "Chasing 'Thundersnow' Could Lead To More Accurate Forecasts." ScienceDaily. ScienceDaily, 15 January 2009. <www.sciencedaily.com/releases/2009/01/090113155852.htm>.
University of Missouri-Columbia. (2009, January 15). Chasing 'Thundersnow' Could Lead To More Accurate Forecasts. ScienceDaily. Retrieved November 23, 2014 from www.sciencedaily.com/releases/2009/01/090113155852.htm
University of Missouri-Columbia. "Chasing 'Thundersnow' Could Lead To More Accurate Forecasts." ScienceDaily. www.sciencedaily.com/releases/2009/01/090113155852.htm (accessed November 23, 2014).

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