Day 6 (Tuesday 5 August 2014)

Day 6 of the OSTIV Congress began with a presentation by E. T. Özdemir (Turkish Meteorological Service, Istanbul, Turkey). This paper was related with a case study of the wet microburst on 2nd. AUGUST 2011 at Esenboğa International Airport. It was a co-operative research prepared by A. Deniz from Istanbul Technical University, Maslak Istanbul. In this study they analyzed heavy thunderstorms with rain (+TSRA) and wet microburst with an observed maximum wind speed 79.3 knots influenced Esenboğa International Airport (LTAC) in Ankara. In this study, results of microanalysis were presented for some meteorological elements such as precipitation, wind velocity, pressure, temperature (dew and dry), Doppler radar echo, sounding, etc. They analyzed the developing stage of microburst by using data from Automated Weather Observing System (AWOS) for every minute, Aviation Routine Weather Report (METAR) and Aviation Selected Special Weather Report (SPECI).

The second presentation with the title of “Detection of overshooting cloud tops (OTs) and their relationship to severe weather over Europe” was given H. B. Baltacı. Authors of the co-operative paper were Kindap, A. Ünal and M. Karaca from Istanbul Technical University, Eurasia Institute of Earth Sciences, Istanbul, Turkey. This study explains the identification of overshooting tops from satellite images and differences in the frequency between over land and over water surfaces, day-night times, and also emphasizes the detection and characterization of overshooting tops. In this study, objective overshooting cloud tops (OTs) method was applied to Meteosat Second Generation (MSG) Spinning Enhanced Visible and Infrared Imager (SEVIRI) brightness temperature data. In order to add tropopause temperature to the OTs algorithm, 6 hour forecast from the European Center for Medium Weather Forecast (ECMWF ) NWP model was also used.

The presentation after the coffee brake was given by F. Dökmen (Kocaeli University). The last presentation of the day was related with “The Effects of Climate Change on Agricultural Production under High Evaporation and Their Role on Aviation and Gliding in Southeastern Anatolia Region of Türkiye”. This paper was about a co-operative study prepared together with M. Kuzucu from Pistachio Research Station Directorate, Gaziantep, Türkiye. In this study, the effects of evaporation and evapo-transpiration from agricultural areas in Southeast of Türkiye were discussed by their role on aviation and gliding over all on the long years of climate data. Long term average evaporation was 2047 mm over the 30 years in the research area. The effects of high evaporation create of many stress conditions in terms of aviation and gliding depend on agricultural activities.