Near-Real Time Satellite-Retrieved Cloud and Surface Properties for Weather and Aviation Safety Applications

Thursday, 18 December 2014: 10:50 AM
Patrick Minnis1, William Smith Jr2, Kristopher M Bedka3, Louis Nguyen4, Rabindra Palikonda5, Gang Hong6, Qing Trepte5, Thad Chee7, Benjamin R Scarino7, Douglas Spangenberg5, Sunny Sun-Mack5, Cecilia Fleeger7, J Kirk Ayers6, Fu-Lung Chang8 and Patrick W Heck9, (1)Nasa Larc, Hampton, VA, United States, (2)NASA Langley Research Ctr, Hampton, VA, United States, (3)NASA Langley Research Center, Climate Science Branch, Hampton, VA, United States, (4)Nasa, Hampton, VA, United States, (5)Science Systems and Applications, Inc. Hampton, Hampton, VA, United States, (6)SSAI, Hampton, VA, United States, (7)Science Systems & Applications, Inc., Hampton, VA, United States, (8)NASA Langley Research Center, Hampton, VA, United States, (9)Cooperative Institute for Meteorological Satellite Studies, Madison, WI, United States
Cloud properties determined from satellite imager radiances provide a valuable source of information for nowcasting and weather forecasting. In recent years, it has been shown that assimilation of cloud top temperature, optical depth, and total water path can increase the accuracies of weather analyses and forecasts. Aircraft icing conditions can be accurately diagnosed in near-real time (NRT) retrievals of cloud effective particle size, phase, and water path, providing valuable data for pilots. NRT retrievals of surface skin temperature can also be assimilated in numerical weather prediction models to provide more accurate representations of solar heating and longwave cooling at the surface, where convective initiation. These and other applications are being exploited more frequently as the value of NRT cloud data become recognized. At NASA Langley, cloud properties and surface skin temperature are being retrieved in near-real time globally from both geostationary (GEO) and low-earth orbiting (LEO) satellite imagers for weather model assimilation and nowcasting for hazards such as aircraft icing. Cloud data from GEO satellites over North America are disseminated through NCEP, while those data and global LEO and GEO retrievals are disseminated from a Langley website. This paper presents an overview of the various available datasets, provides examples of their application, and discusses the use of the various datasets downstream. Future challenges and areas of improvement are also presented.