Dr. Zhong Liu of the Goddard Earth Science Data and Information Services Center (GES DISC) and George Mason University CSISS will give a presentation on the Hurricane Data Analysis Tool (HDAT) on Wednesday, January 26, 2011 at the American Meteorological Society Annual Meeting, taking place in Seattle, Washington. Dr. Liu specializes in precipitation data acquired by sensors on a variety of NASA satellites. Co-authors on Dr. Liu's presentation are Dana Ostrenga and Gregory Leptoukh of the GES DISC.
According to Dr. Liu, the Hurricane Data Analysis Tool (http://disc.gsfc.nasa.gov/HDAT) allows researchers to conduct online visualization and analysis of several different data sets – some obtained directly from remote sensing and others generated by modeling – for educational activities and to facilitate studies of tropical cyclones and other weather phenomena.
One of the primary data products in HDAT is the Tropical Rainfall Measuring Mission daily global rainfall product derived from the 3-hourly multi-satellite precipitation product. HDAT also includes sea surface temperature (SST) from the TRMM Microwave Imager (TMI). Data on ocean winds and atmospheric conditions are available from QuikSCAT and NCEP Reanalysis.
Perhaps one of the most impressive aspects of HDAT is the global merged infrared (IR) product, also known as the NCEP/CPC half-hourly, 4-km Global (60ºN - 60ºS) IR Data set. This data set provides global brightness temperature data (equivalent blackbody temperatures) merged from all available geostationary satellites (GOES-8/10, METEOSAT-7/5 & GMS). The GES DISC has collected over 10 years of these data, beginning from February 2000. This high temporal resolution (every 30 minutes) dataset not only provides additional background information to TRMM and other satellite missions, but also allows observation of a wide range of meteorological phenomena from space, such as hurricanes, pyrocumulus clouds, mesoscale convection systems, and even volcanic eruption ash clouds. Users can generate downloadable animations of these phenomena at different time intervals.
The animation below was generated by HDAT, and shows super typhoons Parma (the western storm over the northern Phillipines) and Melor (the eastern storm approaching the northern Marianas) on October 3, 2009.