In this study, for the Danube Sea Area (Danube Region—western part of the Black Sea), the structure of the sea effect snow (SES) bands, meteorological conditions in which SES bands occurred, and SES band types are analysed for the period 2009–2018. In the 10‐year period, snowy times were determined using aviation reports published by four airports within the borders of the Marmara Region. SES events and SES bands were determined by examining the several satellite images (Channel 9‐IR, Natural Colour‐RGB, Airmass‐RGB, Channel 6‐VW) obtained from the Spinning‐Enhanced Visible and Infrared Imager (SEVIRI) device on MSG‐2 (Meteosat‐9) and MSG‐3 (Meteosat‐10) satellites. The Danube Region is divided into six sub‐regions. Five different types of SES bands were analysed separately for each sub‐region. Some meteorological conditions that are known to play an important role in the formation of SES bands (presence, thickness and level of the inversion layer; wind structure in the upper levels over the sea; sea surface temperature—SST) were analysed for the snowy times with sea‐effect. According to the preliminary results; a total of 186 days were found to be snowy, 75 days of these snowy days occurred with sea‐effect, and SES bands were seen in 8 days but did not cause snowfall in the Marmara Region. Type‐2 (T‐2) band was the most common band type (85%) over the Danube Region. The inversion layer(s) were observed between the level of 850–700 hPa in 52 days of 75 snowy days with sea effect. The majority of the direction of the upper‐level winds (at 850 and 700 hPa) was found to be northern (North‐N, Northwest‐NW, Northeast‐NE). The lowest average SST value (6.02°C) observed in the sub‐region ‘A’ and the highest average SST value (8.66°C) was observed in the sub‐region ‘F’.

中文翻译：

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黑海多瑙河海域海雪带的分类与分析

在这项研究中，针对多瑙河海域（多瑙河地区-黑海西部），分析了该期间的海效应雪（SES）波段的结构，发生SES波段的气象条件以及SES波段类型2009–2018。在十年期间，下雪时间是根据马尔马拉地区边界内四个机场发布的航空报告确定的。SES事件和SES频段是通过检查从MSG‐上的旋转增强型可见光和红外成像仪（SEVIRI）设备获得的几个卫星图像（通道9‐IR，自然颜色RGB，空气质量RGB，通道6‐VW）确定的。 2（Meteosat-9）和MSG-3（Meteosat-10）卫星。多瑙河地区分为六个子地区。每个子区域分别分析了五种不同类型的SES频段。分析了在下雪时期一些在SES波段形成中起重要作用的气象条件（反演层的存在，厚度和水平；海面上空的风结构；海表温度—SST）具有海洋效应。根据初步结果；总共发现有186天下雪，其中有75天是有海洋效应的，在8天之内出现了SES波段，但并未在马尔马拉地区造成降雪。2型（T-2）频段是多瑙河地区最常见的频段类型（85％）。在有海洋效应的75个下雪天的52天内，在850-700 hPa的水平之间观测到了一个反转层。高层风的主要方向（在850和700 hPa处）被发现是北风（北北风，西北西北风，东北东北风）。