Yomra (Trabzon) Kırsalında 31 Ağustos 2017’de Meydana Gelen Dolu Yağışının İncelenmesi

Yıl 2019, Cilt: 4 Sayı: 2, 243 - 250, 31.08.2019

Emrah Tuncay Özdemir , Oğuzhan Kolay Ömer Yetemen

https://doi.org/10.35229/jaes.573842

Cited By: 3

Öz

31 Ağustos 2017 tarihinde Trabzon Şehrinin Yomra ilçesinde dolu yağışı meydana gelmiştir. Fındık toplama zamanında meydana gelen dolu yağışı fındıkların olgunlaşmış olması nedeniyle fındıklara çok büyük zarar vermemiştir. Yomra’da meydana gelen dolu yağışı videoya kaydedilmiş ve yağıştan sonra da yerde biriken dolular yer yer fotoğraflanmıştır. Meydana gelen dolunun çapı yaklaşık 1.5 cm’dir. Dolu yağışı Meteoroloji Genel Müdürlüğü’den elde edilen uydu görüntüleri ve radar görüntüleri kullanılarak analiz edilmiştir. Ayrıca sayısal analiz için Türkiye’de ilk defa kullanılan Thunderstorm Identification Tracking Analysis and Nowcasting (TITAN) yazılım programı kullanılmıştır. Bu çalışmada, 62,5 dBZ reflektivite değerine ulaşan oraj hücresinin “supercell” olup olmadığı tartışılmıştır. TITAN analizi sonucunda, eko bölgelerinin gözlenmesi, V çentigi, göreceli olarak yüksek yağiş akış değerleri ve alansal büyüklüğü gibi belirtiler bu dolu hadisesine neden olan oraj hücresinin supercell olması olasılığını artırmaktadır. 

Anahtar Kelimeler

Dolu yağışı, radar görüntüsü, supercell, TITAN, Trabzon, uydu görüntüsü

A Case Study of Rural Area Hail Storm in Yomra, Trabzon, on August 31, 2017

Öz

On August 31, 2017, a hail storm occurred in rural area in Yomra
District of Trabzon Province. The hail storm occurred during the harvest
season, and it did not cause big losses on hazelnut production because hazelnuts
had been fully grown. The hail storm was recorded, and some of hail
accumulations had been photographed by a mobile phone. Diameters of hail were
approximately 1.5 cm. In this study, the hail storm event is analysed by satellite
and weather radar products that obtained from Turkish State Meteorological
Service. Also, the radar data analysed by Thunderstorm Identification,
Tracking, Analysis and Nowcasting (TITAN) software which is used for the first
time in the analysis of meteorological events in Turkey. Here, it was discussed
that the storm cell with 62.5 dBZ reflectivity value is whether a “supercell”
or not.

Anahtar Kelimeler

Trabzon, TITAN, hail storm, satellite products, weather radar

Kaynakça

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