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Weather forecasting has changed from a day-to-day guess based on local observation to a scientific method dependent on global data collected accurately, in detail, and at set times. Traces the progression of forecasting from data-collection methods to regional centers for computer plotting and analysis to prediction of weather for the next five to seven days. Includes why forecasting is important.
(Source: DCMP)
While Earth's weather reports center on precipitation, temperature, wind direction, and humidity, space weather forecasts attempt to predict activity that occurs on the sun. Scientists also study how the weather on the sun will affect Earth. At the University of Michigan a team studies solar storms as they form and then barrel off the sun. Sometimes these storms hit the Earth with damaging force. Space weather has the potential to interfere with everything from satellite communications to electrical power. This team is aiming for a five-day forecast capability to give government, private industry, satellite operators, and power grid companies more time to take necessary action to protect critical infrastructure. Part of the "Science Nation."
Weather is the state of the atmosphere, and it refers to the day-to-day temperature and precipitation activity. The difference between air pressure, temperature, and moisture influence weather-related phenomena. Other topics covered include evaporation, relative humidity, clouds, precipitation, rain gauge, air mass, front, thunderstorm, hurricane, tornado, weather forecast, meteorologist, and satellite imagery.
What causes earth's weather? Explains that the sun is the primary source of our changing weather phenomena as it warms the atmosphere and water. Covers weather forecasting, high and low pressure fronts, cloud formations, and the water cycle. Presents weather conditions for thunderstorms, tornadoes, and hurricanes.
Tornadoes claim hundreds of lives and cause billions of dollars in damages in the United States. With support from the National Science Foundation, computer scientist Amy McGovern at the University of Oklahoma is working to find answers to key questions about tornado formation. While video from storm chasers and data from Doppler radar can help meteorologists understand some aspects of tornadoes, McGovern uses supercomputers to find patterns in very large datasets. She also works with weather experts to help her sort out the information in the simulations. McGovern’s ultimate goal is to come up with reliable tornado forecasting system.
Inside a cylinder that is about the size of a roll of paper towels lives a circuit board filled with sensors. It's called a dropsonde, or “sonde” for short. As the sonde falls through the air after being dropped for an airplane, its sensors gather data about the atmosphere. Dropsondes have a huge impact on understanding hurricanes and the ability to predict hurricanes. Part of the National Science Foundation Series “Science Nation.”
How is meteorological information interpreted? A team takes a close up look at the methods, devices, and equipment used to generate, transmit, and process the information for the weather forecast. Part of Invisible Science and Technology Surrounding Series.
In this episode, researchers discuss the novel applications for a self-healing reverse filter. For example, researchers are studying its application in unsanitary environments. Scientists also ask the question: Is laziness a fruitful strategy for the survival for some species? Researchers are studying the link between metabolic rate and extinction. In the final segment, weather forecasts are predicting that El Niño and La Niña are likely to intensify wildfires and increase drought risk. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
Meteorologists studying clouds in Europe are learning about the microphysical processes that occur naturally in clouds. This knowledge helps researchers gain new fundamental knowledge that can help improve weather and climate forecast models. Students will discover how scientists study cloud formation by generating artificial clouds in a laboratory. Scientists research how clouds originate and how they react to surrounding natural elements. They will reveal how microwave radiometers, lasers, and satellites are used in researching cloud development.
NOAA's environmental satellites provide data from space to monitor Earth to analyze coastal waters, relay life-saving emergency beacons, and predict and track tropical storms and hurricanes. NOAA operates three types of satellite systems for the United States: polar-orbiting satellites, geostationary satellites, and deep space satellites. Polar-orbiting satellites circle Earth and provide global information from 540 miles above Earth. Geostationary satellites constantly monitor the Western Hemisphere from around 22,240 miles above Earth. The deep space satellites orbit one million miles from Earth, providing space weather alerts and forecasts while also monitoring the amounts of solar energy absorbed by Earth every day.
El Niño and La Niña are periodic weather patterns resulting from interactions between the ocean and the atmosphere in the Pacific Ocean. Ocean temperatures indicate the presence of El Niño and La Niña, which sometimes lead to extreme weather in many parts of the United States. NOAA climatologists closely track the development of these oscillating systems, which typically last between one to two years. With so much at stake, it’s critical to be able to monitor and forecast when El Niño or La Niña is developing so governments, businesses, and private citizens can prepare.
Hurricanes are nature's engines of death and destruction, the costliest natural disaster on earth. Explains how and where hurricanes formed; uses live footage to show the forces of wind, weather, and storm surge, and the damage they can do. Compares current information with historical knowledge and notes how forecasting has greatly improved. Explores how meteorologists work to understand and predict these brutal storms.
Episode one explores what hurricanes are, how they are formed, and how the specialists try to predict whether the next storm will blow over or blow the roof off. Featuring interviews with some of the world’s leading hurricane experts, this episode looks at the latest theories and the most advanced technologies that are being used to hone the forecasts. While a fearless team of Hurricane Hunter pilots flies into the eye of each approaching storm, their data is supplemented by information from satellites, drones, and even fish. Part of "Hurricane, the Anatomy" series.
What began as an undersea earthquake in the Indian Ocean ended as the most deadly tsunami in recorded history. Ten years later, scientists have a better understanding of these events, and coastlines are far better prepared for such a catastrophe, thanks in large part to the NOAA Center for Tsunami Research at Pacific Marine Environmental Laboratory. Part of the "Danger Zone" series.
A hurricane hunter is a pilot that flies an airplane into the middle of a hurricane. They gather data on temperature, humidity, and air pressure. This data is critical for forecasting the intensity and path of hurricanes. Part of the "NOAA Ocean Today" series.
Sometimes rip currents are referred to as "undertow" or "rip tides." These ocean phenomena are narrow currents in the surf zone that move quickly away from shore. A typical rip current ranges from 50-100 feet wide, and can extend 100 yards or more offshore. It can reach speeds of over 5 miles per hour, which makes them dangerous and potentially deadly. Scientists are studying these currents with the hopes of better forecasting when and where they will form. Part of the "Danger Zone" series.
Visionary oceanographer Scott Glenn leads a team of scientists as they race against time to launch the first autonomous underwater robot across the vast and dangerous Atlantic Ocean. Destined for Spain, the 8-foot bright yellow robot named RU27, or "Scarlet," is launched off the coast of New Jersey. Throughout her journey, data collected by Scarlet is fed into oceanographic navigation and forecasting models. Engulfed by the powerful ocean, our robot hero faces extreme weather conditions, ship traffic, and aggressive sea life that can terminate her mission. If Scarlet can successfully cross the vast Atlantic Ocean, her historic mission will inspire a future robotic oceanographic observation network critical for monitoring and predicting climate change. If Scarlet can successfully cross the vast Atlantic Ocean, her historic mission will inspire a future robotic oceanographic observation network critical for monitoring and predicting climate change.
Live-action weather footage helps students learn how they can observe the weather. Concepts and terminology discussed include: temperature, air pressure, weather systems, precipitation, and wind.
Presents the principles of weather dynamics. Shows how weather conditions are measured, how computer models are used to predict the weather, the special role of moisture in producing weather phenomena, and finally, the impact of hazardous weather.
Staying safe in all kinds of weather and avoiding weather-related injuries are the focus of this practical video. Concepts and terminology: lightning, tornado, wind, hurricane, and safe shelter.
