tech drones uavs weather hurricane tropical_storm global_hawk surveillance meteorology

Designs Would Put Surveillance Drones Over Hurricanes For A Week At A Time

The three designs above won a NASA competition to envision the next generation of hurricane surveillance drones. 

The agency asked teams to develop an unmanned aerial system (UAS) that could stay aloft for seven days at a time and offer persistent remote sensing over a period of five months. That timeframe covers a typical Atlantic hurricane season, and the agency’s goal is to closely follow storm formation from when a tropical wave moves off Africa’s west coast through the full life cycle of the weather system.

Current UASs used for tropical storm monitoring are similar to the military Global Hawk surveillance and security platform, and can only stay aloft for 24 hours at a time before they need to come home.

Read More

84
84 notes
http://www.tumblr.com/reblog/91358051350/PsuXbkBl
Permalink
photo
science tech hurricane weather drones uav autonomous_vehicles tropical_storm forecasting
Tiny Drones Deliver Bird’s-Eye View Of Hurricanes

image

by Marsha Lewis, Inside Science

When a major storm develops, we want to know where it will hit and how strong it will be. Currently, the best way to study a hurricane is to fly a plane near the storm to collect data. But, that approach can be costly, not to mention very dangerous.

“If you look at Katrina, we were completely wrong with the intensity of the hurricane” said Kamran Mohseni, an aerospace engineer at the University of Florida in Gainesville.

To track storms now, aircraft fly over the storms and drop a device that collects data as it falls through the clouds. But it’s not a perfect way to collect information.

“You put people at risk. The airplane is at risk and it is extremely expensive, and if you crash, that’s major news,” said Mohseni.

Read More

39
39 notes
http://www.tumblr.com/reblog/90564195115/am8ZC8Yf
Permalink
text
science sports world_cup soccer football dehyrdration health weather fifa brazil
World Cup Players Hope To Beat The Heat

by Peter Gwynne, Inside Science

Soccer’s quadrennial World Cup is scheduled to start on time this week in Brazil, despite delays in creating the necessary infrastructure, strikes, charges of corruption, and deaths of workers in new stadiums. But one problem remains: climate conditions that will sap the strength and vitality – and possibly damage the health – of the elite players who represent the 32 nations in the tournament.

That’s ironic, because the event is taking place in the southern winter – the natural season for the game. But for several international teams, the tourney will represent a winter of discontent.

Stadiums in northern Brazil will host the most extreme weather. Daytime temperatures in some locations will exceed 85 degrees Fahrenheit, and humidity will exceed 75 percent. The conditions will make it difficult for teams to exert maximum effort over the entire match, especially teams from cooler climes.

"In humid conditions, moisture in the atmosphere prevents the evaporation of sweat, which drips instead, a less efficient heat loss mechanism," explained John Brewer, a former head of sport science for the English Football Association and currently a professor of sport at the U.K.’s University of Bedfordshire. "High environmental temperatures also reduce the body’s ability to radiate heat into the atmosphere, so both heat loss mechanisms are compromised."

Read More

21
21 notes
http://www.tumblr.com/reblog/88660617096/L0hoV6M0
Permalink
text
tech science weather meteorology supercomputers computer_modeling climate monsoon cyclone hurricane
Powerful Model Could Help Predict Monsoons And Cyclones A Month Away

image

by Michael Keller

Japanese atmospheric scientists reveal they have cracked the code to model a complex weather phenomenon using a new supercomputer. They say their work will help build more accurate forecasts of monsoons and tropical cyclones up to a month away.

Their research focused on moving regions of wet and dry weather that travel over the warm parts of the Indian, Pacific and Atlantic oceans. These regions move eastward at up to 18 mph in a regular 30- to 60-day cycle of thunderstorms followed by suppressed precipitation. The phenomenon is called the Madden–Julian oscillation (MJO), and influences deadly monsoon and cyclone development. It has also been linked to the periodic El Niño/La Niña weather event in the eastern Pacific Ocean.

Efforts to model the globe-spanning MJO’s variability have been limited by the complicated physics that happens within the churning clouds. But atmospheric researchers at the Japanese Agency for Marine-Earth Science and Technology and the University of Tokyo employed the K computer to accurately recreate MJOs of the past, proving that it will be important for future forecasts.

Read More

52
52 notes
http://www.tumblr.com/reblog/84935489145/hSheX6ix
Permalink
text

LATEST