![]() “The systems have equal strength and are cancelling each other out,” leaving Harvey stranded, Masters said. is trying to push the storm in the opposite direction. is trying to push the storm in one direction, but a big high pressure system over the southwestern U.S. ![]() ![]() In Harvey’s case, a big high-pressure system over the southeastern U.S. Hurricanes are circular structures with winds that spiral counterclockwise, but they are steered by larger wind patterns in the greater atmosphere that push them in one direction. Why is Harvey so stuck in place over Texas? Hurricane Katrina, which destroyed New Orleans in 2005, also mushroomed to Category 4 in a similar fashion because it, too, passed over a hot eddy in the Gulf. The hotter the water, the more energy it drives into a storm. This spot of hot water was 1 to 2 degrees Fahrenheit warmer than the Gulf of Mexico around it, which itself was already 1 to 2 degrees Fahrenheit higher than average, reaching 85 or 86 degrees Fahrenheit in places. That is because it happened to pass over a region of extremely warm ocean water called an eddy. On Friday it rapidly ballooned from a Category 1 hurricane to Category 4. Last Wednesday night, August 23, Harvey was a tropical depression, but after just eight overnight hours it was forming a hurricane eye wall. ![]() Why did Hurricane Harvey so quickly explode from a Category 1 hurricane to Category 4? Kerry A.Harvey has dropped so much water over such a large area of southeastern Texas that the storm is pulling that water back up into itself and dumping it again as more rain. Kevin Kloesel, Oklahoma Climatological Survey | OctoHot science – cool talks: Hurricanes in the gulf of mexico: The History and Future of the Texas Coast Katharine Hayhoe, Texas Tech University | FebruHot Science – Cool Talks: Extreme weather and uncertainty in forecasting Kate Marvel, Columbia University and NASA GISS | Thursday, FebruHot science – cool talks: Hurricane Harvey: Flood Emergency Responseĭavid Maidment, Department of Civil Engineering The University of Texas at Austin | Friday, SeptemHot Science – Cool Talks: Climate and Faith, Money and Politics: Can we build a sustainable future? Ran Feng, University of Connecticut | Thursday, FebruDeford lecture Series: Understanding climate change past, present, and future: New Methods for signal detection and attribution Geeta Prasad, Stanford University | Thursday, FeburDeford lecture series: Amplified arctic warming during the mid-piacenzian warm period ![]() Yi Ming, Geophysical Fluid Dynamics Laboratory, Princeton University | Thursday, FebruDeford lecture series: From months to Milankovitch: Climate variability and response in a coupled earth systemsĬhristian Proistosescu, University of Washington | Tuesday, FebruDeford lecture series: What aerosols can tell us about the past and future of the climate system Mark Jellinek, University of British Colombia | Tuesday, MaDeford Lecture series: Aerosols, Clouds and Regional Hydroclimate DEFord lecture series: Understanding the transient climate evolution of the last 21,000 years: a melding of paleoclimate modeling and dataīette Otto-Bliesner, National Center for Atmospheric Research (NCAR) | Tuesday, MaDEFORD Lecture Series: Ice, fire or fizzle: The climate footprint of earth’s Supercontiental cycles ![]()
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