作者: Kristopher Bedka , Jason Brunner , Richard Dworak , Wayne Feltz , Jason Otkin
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摘要: Abstract Deep convective storms with overshooting tops (OTs) are capable of producing hazardous weather conditions such as aviation turbulence, frequent lightning, heavy rainfall, large hail, damaging wind, and tornadoes. This paper presents a new objective infrared-only satellite OT detection method called infrared window (IRW)-texture. uses combination 1) channel brightness temperature (BT) gradients, 2) an NWP tropopause forecast, 3) size BT criteria defined through analysis 450 thunderstorm events within 1-km Moderate Resolution Imaging Spectroradiometer (MODIS) Advanced Very High Radiometer (AVHRR) imagery. Qualitative validation the IRW-texture well-documented water vapor (WV) minus IRW difference (BTD) technique is performed using visible imagery, CloudSat Cloud Profiling Radar, and/or Cloud-Aerosol Lidar Infrared Pathfinder Satellite Observation (CALIPSO) cloud-top height for selected cases. Quantit...