Scatterometer results enable measurements not only of wind speed but also of direction across the water surface.What makes ERS-2's scatterometer especially valuable is that its C-band radar frequency is almost unaffected by heavy rain, so it can return useful wind data even from the heart of the fiercest storms.Dr Ad Stoffelen of the Royal Netherlands Meteorological Institute (KNMI), which processes ESA’s scatterometer images, said: "Observed winds from hurricane Dean by ESA's ERS-2 scatterometer are provided to meteorologists within the hour. Although the wave initially experienced strong easterly wind shear, it quickly moved into an environment better suited for tropical development and gained organization. Stop' by Hurricane Dean. November 12, 2010 2007-08-16. Instruments aboard ESA’s Envisat and ERS-2 satellites allow them to peer through hurricanes. Your opinions are important to us. Several hurricanes have intensified when their tracks pass over eddies or other masses of warm water with high TCHP values. The expectation is that Dean will be close to the Lesser Antilles in 5 days. Scatterometer results enable measurements of not only wind speed but also direction across the water surface. 2 "Another Envisat instrument called the Radar Altimeter-2 (RA-2) uses radar pulses to measure sea surface height (SSH) down to an accuracy of a few centimetres. Medical Xpress covers all medical research advances and health news Tech Xplore covers the latest engineering, electronics and technology advances Science X Network offers the most comprehensive sci-tech news coverage on the web The hurricane, which has already claimed eight lives, is forecast to slam into Mexico’s Yucatan Peninsula on Tuesday morning. You can unsubscribe at any time and we'll never share your details to third parties.
Wind-driven ripples on the ocean surface modify the radar backscatter, and as the energy in these ripples increases with wind velocity, backscatter increases as well. ESA satellites are tracking the path of Hurricane Dean as it rips across the Caribbean Sea carrying winds as high as 260 km/h. The hurricane, which has already claimed eight lives, is forecast to slam into Mexico’s Yucatan Peninsula on Tuesday morning. 5,000 acres (20 kmThe storm passed to the south of most of the Greater Antilles, though its outer rain bands crossed many of the islands, and delivered hurricane-force winds to Jamaica. Martinique experienced 75 mph (120 km/h) winds with gusts to 105 mph (170 km/h).On the evening of August 16, 12 hours before the storm arrived in St. Lucia, power outages began in some of the island's neighborhoods. A second landfall on August 22 was less devastating. As Hurricane Isaias' heaviest bands approached North Myrtle Beach, South Carolina, Monday evening, Dean Burris watched from the balcony of his … ESA satellites are tracking the path of Hurricane Dean as it rips across the Caribbean Sea carrying winds as high as 260 km/h.
Hurricane Dean . With the help of JA$1.1 billion (US$15.5 million) of aid from the EU's Although Dean's landfall in Mexico occurred in a relatively uninhabited area and the storm's well-predicted track gave ample warning, the storm inflicted extreme damage. This document is subject to copyright. Hurricane Dean, who slammed into the Yucatan Peninsula as a mighty Category 5 hurricane on the Saffir-Simpson scale and moved into the Gulf of Campeche to make a second landfall in Mexico as a Category 2 hurricane last week, is now a bad memory. I still hope the one I got to know comes back someday / I still do / What you want me to just to make you stay / Theres (?) The hurricane, which has already claimed eight lives, is forecast to slam into Mexico’s Yucatan Peninsula on Tuesday morning. Envisat carries both optical and radar instruments, enabling researchers to observe high-atmosphere cloud structure and pressure in the visible and infrared spectrum.The Medium Resolution Imaging Spectrometer (MERIS) optical instrument shows the swirling cloud-tops of a hurricane, while radar instruments such as the Advanced Synthetic Aperture Radar (ASAR) pierce through the clouds to show how the wind fields shape the sea surface and estimate their likely destructive extent.ERS-2 uses its radar scatterometer to observe the hurricane's underlying wind fields. Central Pacific Hurricane Center 2525 Correa Rd Suite 250 Honolulu, HI 96822 W-HFO.webmaster@noaa.gov It also returns useful atmospheric data, measuring the temperature of the top of hurricane clouds – the higher into the atmosphere they extend, the colder they are.AATSR information can be correlated with MERIS data cloud height and development to gain a good estimate of the hurricane's precipitation potential, and improve understanding of how this relates to its overall intensity. Winds around eye of Hurricane Dean Dr. Because warm water expands, scientists can locate warm underwater ocean features by detecting bulges in the ocean surface height, as detected by RA-2.The thermal energy of warm water, which partly powers a hurricane, is known as tropical cyclone heat potential (TCHP).
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