Aircraft icing detection with satellite data in Southwestern Siberia

[摘要] An approach to the detection of aircraft icing zones based on information from MODIS (Terra, Aqua) and ATOVS (NOAA18, NOAA19, MetOp) radiometers is presented. The prospects of using such an approach are demonstrated for Tomsk airport, which has a 2011-2017 PIREP data bank. The annual icing frequency in the vicinity of Tomsk is rather high and amounts to 14% of days per year, increasing by 30% in October to December according to the PIREPs. The following satellite products are used: 1.375 and 8.50 μm channel information, cloud-top temperature, cloud water path, temperature and specific humidity vertical profiles. The temperature and humidity profiles restored from the satellite data make it possible to identify icing zones on a three-dimensional scale using physical and statistical regularities. An example of a severe icing diagnosis based on the Godske method and a computed intensity of icing in-flight at 250 kph is considered in the paper. A combined analysis of the materials confirms that the identification of icing zones is satisfactory.

[发布机构] National Research Tomsk State University, 36 Lenin Avenue, Tomsk; 634050, Russia^1

[效力级别] 计算机科学

[关键词] Channel information;Cloud-top temperatures;Combined analysis;Satellite products;Specific humidity;Statistical regularity;Temperature and humidities;Vertical profile