Featured Posts

http://moonandback.com/?p=27804: NASA Study Could Improve Hurricane Strength Forecasts

Direct link NASA Study Could Improve Hurricane Strength Forecasts

29 Nov 2012, 07:48 UTC PASADENA, Calif. – Forecasters could soon be better able to predict how intense tropical cyclones like Hurricane Sandy will be by analyzing relative-humidity levels within their large-scale environments, finds a new NASA-led study. Scientists from NASA’s Jet Propulsion Laboratory, Pasadena, Calif., UCLA and the University of Hawaii at Manoa analyzed relative humidity data from the Atmospheric Infrared Sounder (AIRS) instrument on NASA’s Aqua spacecraft for nearly 200 North Atlantic hurricanes between 2002 and 2010. The AIRS data were then compared with various types of post-storm data collected from all available sources by the National Oceanic and Atmospheric Administration’s National Hurricane Center, including measured maximum sustained winds. The researchers found the hurricanes that rapidly intensified tended to exist within a moister large-scale environment than weaker storms. The rapidly intensifying hurricanes had statistically significant higher relative-humidity levels in their environments than storms whose intensity was weakening or unchanged. Lead author and former JPL postdoctoral scholar Longtao Wu, now an assistant researcher at the UCLA-JPL Joint Institute for Regional Earth System Science and Engineering, said the study could lead to improvements in hurricane intensity forecasts. “Our results show relative humidity and its variations within a hurricane’s large-scale environment may be useful predictors in ...

Displaying 12951-12960 of 29330 entries.

Previous | 1 ... 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 ... 2933 | Next

Latest Vodcast

Latest Podcast

Advertise PTTU

Extrasolar Planets

  • Planetary Systems: 1268
  • Multiple Planet Systems: 498
  • Planets: 2003

NASA Picture of the Day

Astronomy Picture of the Day