National Weather Center Colloquium

An ultra-fine resolution simulation of Hurricane Sandy: observations, prediction, and socioeconomic applications

Dr. Melvyn Shapiro
Research Scientist, NCAR

25 February 2014, 4:00 PM

National Weather Center, Room 1313
120 David L. Boren Blvd.
University of Oklahoma
Norman, OK

Reception @ 3:30 PM

The 96-hour simulation of the Hurricane Sandy (2012) on the Cray Blue Waters supercomputer at the National Center for Supercomputing Applications, University of Illinois, will be presented. The simulation was performed with the NCAR WRF-ARW regional prediction system with a horizontal resolution of 500 m and 150 vertical levels. The domain encompassed 5 billion computational points over area spanning Cuba to Hudson Bay and Illinois to Greenland. Animations and Lagrangian diagnostics were prepared with the NCAR VAPOR visualization system. Results reveal: (i) dramatic differences between cloud permitting (3-km, 42-level) and cloud-resolving (500-m, 150-level) simulations; (ii) the juxtaposition of differential diabatic heating in meso-convective ascent inner core and evaporative cooling of descending stratospheric air intruding into the stable precipitation encircling warm inner core; (iii) strengthening and scale contraction of the hurricane vortex just prior to landfall. Five-minute resolution wind gust and temperature measurements from the New Jersey mesoscale surface network will be used to detail the landfall and the accuracy of the simulation. Coupling of the simulation to a 100-m resolution storm surge model will also be demonstrated.

Speaker bio

For accommodations based on disability, or more details, please call 325-6561. All visitors without NOAA or University of Oklahoma identification must register at the registration desk on arrival. Visitor parking is available for all University visitors. However, faculty/staff/students must have a current multi-purpose parking permit. Additional parking is available at the Lloyd Noble Center (LNC) for those individuals who do not have a parking permit. You do not need a permit to park in one of 1,200 spaces reserved for CART bus riders, although you must ride the CART shuttle to park in the reserved area. This area is on the north central side of the Lloyd Noble Center. Elsewhere at the LNC, permits are required.

The University of Oklahoma is a smoke-free / tobacco-free campus.

National Weather Center Colloquium Seminar Series website