

The Science of Extreme Weather
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Episodi
S1 E1 - Extreme Weather Is Everywhere
21 luglio 201636minSurvey the remarkable range of extreme weather around the planet. Then consider: Why does Earth have weather at all? Professor Snodgrass introduces basic features of the atmosphere that naturally lead to severe weather. He concludes by outlining the goals of his study - among them, preparedness.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E2 - Temperature Extremes and Cold-Air Outbreaks
31 ottobre 201633minDiscover the origin of Earth's great variability in air temperature, and learn how it also explains the seasons. Search for the highest and lowest temperatures on the planet, and the locations with the greatest difference between highs and lows. Along the way, encounter the deadliest weather on Earth.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E3 - Low Pressure and Earth’s High Winds
31 ottobre 201632minWitness a demonstration of the power of air pressure and the ability of changing pressure to produce clouds. Learn how fluctuations in air pressure play a role in all weather, propelling everything from the ferocious winds of a tornado to the incredible speeds of the jet stream.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E4 - Extreme Humidity, Rain, and Fog
31 ottobre 201633minSevere weather is driven by water's ability to change phase - with energy being released during the transition from vapor to liquid, and from liquid to ice. Calculate the stupendous amount of energy brewing in a typical thunderstorm, and study cases of extreme humidity, rain, and fog.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E5 - How Radar Reveals Storms
31 ottobre 201632minStudy the advanced technology that has revolutionized extreme weather forecasting. Here, look at how radar has vastly improved the prediction of tornadic thunderstorms. You've seen Doppler radar images in forecasts. Now learn how this all-important tracking tool works.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E6 - How Satellites Track Severe Weather
31 ottobre 201634minVenture into space to see how different types of weather satellites chart large-scale extreme weather systems in both daylight and darkness. Compare two nearly identical hurricanes - one in 1900, the other in 2008 - to highlight the life-saving capability of orbiting weather stations.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E7 - Anatomy of a Lightning Strike
31 ottobre 201630minMoment for moment, the one billion volts discharged in a typical lightning strike may be the most extreme of all weather phenomena. Watch lightning unfold in super-slow motion, and gain an appreciation for the exquisite complexity of this electrifying event.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E8 - Lightning Extremes and Survival
31 ottobre 201629minInvestigate positive polarity lighting - a bolt up to ten times more powerful than normal lightning - which accounts for five percent of cloud-to-ground strikes. Then hear life-saving tips on how to recognize when you are about to be hit by lightning and what you should instantly do.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E9 - Thunderstorm Formation and Weather Balloons
31 ottobre 201633minBegin your examination of thunderstorms, which are the key to understanding many types of extreme weather. Learn how thunderstorms are forecast, and explore their formation by following a weather balloon on its data-gathering mission through the atmosphere.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E10 - Wind Shear and Severe Thunderstorms
31 ottobre 201633minWind shear is the ingredient that turns an ordinary thunderstorm into a monster. Study the mechanisms that underlie this transformation. Then evaluate the crucial difference between a severe weather watch versus a warning, and put yourself in the shoes of a forecaster calling the shots.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E11 - Squall Line Thunderstorms and Microbursts
31 ottobre 201633minHeralded by an ominous-looking formation called a shelf cloud, a squall line is a group of thunderstorms that produces intense, destructive winds. Analyze the anatomy of a squall line, so that you know what to expect next time a shelf cloud approaches. Also investigate microbursts, another dangerous product of thunderstorms.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E12 - Supercell Thunderstorms and Hail
31 ottobre 201631minPound for pound, the supercell is the most powerful thunderstorm on Earth. Explore the mechanics of this system, which produces the strongest straight-line winds, the most violent tornadoes, and the largest hail. Close by looking at the formation of a record-breaking hailstone weighing almost two pounds!Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E13 - Tornadoes and Their Amazing Winds
31 ottobre 201632minTornadoes hit all 50 states of the U.S. and most inhabited regions of the world. Blowing as fast as 200 to 300 mph, they are the most awe-inspiring of extreme weather. But what exactly are they? And why are they more prevalent in some areas than others? Probe tornado facts and myths, and survey some of the deadliest tornadoes of our times.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E14 - Tornadogenesis and Storm Chasing
31 ottobre 201631minThe genesis of tornadoes takes place under complex conditions that are still being deciphered by meteorologists who make detailed measurements from up close. Go inside a supercell thunderstorm to see a tornado being spawned. Then learn tornado safety tips and the precautions that professional storm chasers take.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E15 - Mountain Windstorms and Avalanches
31 ottobre 201632minStudy the impact of mountains on weather by investigating the Chinook winds, which can race down the east face of the Rocky Mountains with tornadic force. Also look at the Santa Ana winds of southern California, notorious for fanning the region's wildfires. Then explore another aspect of extreme mountain weather: avalanches.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E16 - Ice Storms: Freezing Rain Takes Over
31 ottobre 201631minStart looking at winter weather by pinning down the cause of ice storms, which are beautiful but also dangerous and destructive. Professor Snodgrass demonstrates how supercooled water is the source of the freezing rain behind these perilous storms.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E17 - Epic Snowfall and the Lake Effect
31 ottobre 201630minThe region downwind from the Great Lakes is famous for its lake effect snowstorms, which can total more than 200 inches of snow per year for some locations. Examine the factors behind this phenomenon as well as the mortal danger posed by blizzards, as shown by the tragic Children's Blizzard of 1888.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E18 - Blizzards and Winter Cyclones
31 ottobre 201632minLook back at historical blizzards that paralyzed major U.S. cities. Then probe the official definition of a blizzard, the cold-weather cyclone systems that create them, and the revolution in forecasting blizzards since 1993. Focus on the role of the jet stream, and dispel a common misunderstanding of the polar vortex.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E19 - Flash Floods and Deadly Moving Water
31 ottobre 201631minConsider the deadly power of moving water. Explore scenarios for extreme flooding in flood-prone regions of the U.S. and consider past cases of extreme coastal floods, river floods, and flash floods. Study the meteorology behind these events, and hear flood safety tips.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E20 - Drought, Heat Waves, and Dust Storms
31 ottobre 201633minFrom the American dust bowl of the 1930s to the relentless expansion of the Sahara in Africa, drought represents severe weather that can stretch out for years. Explore what's going on in the atmosphere to create extreme drought, which is associated with heat waves and dust storms.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E21 - Where Hurricanes Hit
31 ottobre 201632minTurn to tropical cyclones, known as hurricanes, typhoons, or cyclones depending on where they occur. Plot the historical tracks of these gigantic storms, sharpen your understanding of how they are named, and focus on tropical cyclones that were so notorious that their names have been retired.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E22 - The Enormous Structure of a Hurricane
31 ottobre 201632minHow do hurricanes get so big? Start off the coast of West Africa to see how this region is the perfect breeding ground for low-pressure disturbances. Chart the role of the Coriolis force, water temperature, and other factors that must coincide for these systems to grow into hurricanes threatening the U.S.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E23 - Storm Surge and Hurricane Intensification
31 ottobre 201633minHurricanes destroy life and property in four ways: through storm surge, inland flooding, high winds, and embedded tornadoes. Consider examples of each. Then focus on high water as the deadliest factor, responsible for 80% of all hurricane fatalities.Periodo d’uso gratuito di The Great Courses Signature Collection o acquistoS1 E24 - El Niño and Cycles of Extreme Weather
31 ottobre 201641minClose by investigating one of the most eventful weather triggers of all: the El Niño-Southern Oscillation, which starts as a warming trend in the eastern Pacific and can lead to extreme weather throughout the world. Our detailed understanding of this once-mysterious phenomenon, as well as other extreme weather cycles, shows how far the science of meteorology has come.Periodo d’uso gratuito di The Great Courses Signature Collection o acquisto