April 27, 2011 Tornado Outbreak Landsat Imagery Viewer
SPoRT Science Seminar Series
"Overview and Early Results from NASA's Global Precipitation Measurement (GPM) Mission"
Date/Time: 10:30 AM, Wednesday, June 29, 2016
Location: NSSTC, SPoRT VCL, Room 3027
Speaker: Dr. George Huffman, Goddard Space Flight Center
Wide World of SPoRT Blog
April 27, 2011–Five Years Later: A Satellite Imagery Perspective
Tue, 26 Apr 2016 14:00:22
On April 27, 2011, a severe weatheroutbreak occurred across the southeastern United States, resulting in 199 tornadoes across the region and over 300 fatalities (NWS 2011 Service Assessment). Alabama was among the states hardest hit,with 68 tornadoes surveyed by the National Weather Service (NWS)Weather Forecast Offices (WFOs)in Huntsville, Birmingham, and Mobile, Alabama, and over 250 [...]
Improving the representation of snow crystal properties within a single-moment microphysics scheme
Single-moment microphysics schemes are utilized in an increasing number of applications and are widely available within numerical modeling packages, often executed in near real-time to aid in the issuance of weather forecasts and advisories. In order to simulate cloud microphysical and precipitation processes, a number of assumptions are made within these schemes. Snow crystals are often assumed to be spherical and of uniform density, and their size distribution intercept may be fixed to simplify calculation of the remaining parameters.
Image of the Day
(click to enlarge)
Due to a convenient alignment between the A-Train orbital trajectory and the path of Hurricane Bill along the eastern coastline of North America, the CloudSat radar was able to take a look at the structure of the cyclone and passed very near to, or perhaps directly across, the eye of the storm (red line, top image). This overpass occurred at 18 UTC on 22 August 2009 when Hurricane Bill was classified as a Category 1 storm. It is unclear whether CloudSat directly sampled across the eye, but the relative lack of convection near 36 degrees may be associated with the eye. Assuming that CloudSat sampled the eye, it is interesting to note that it depicts a layer of relatively thick, high altitude cloud which may have obscured the location of the center in visible or infrared satellite imagery. CloudSat indicates that some shallower convection may be occurring near the eye center (bottom images).
Ingest and Product Status Pages
Though we're not 24/7, SPoRT strives to provide the most timely and reliable data products to its partners and end users. A system has been developed to monitor the health of our real-time data ingest and availability of LDM and FTP products. Summaries are posted every 10 minutes to the links below.