# An ANN Model Trained on Regional Data in the Prediction of Particular Weather Conditions
## 2 Literature Review
### The Specific Climate of Szczecin and Its Influence on Weather  
The weather of Szczecin is reflected in the specific climate of Szczecin's Climatic Land (VI and X), which is influenced by its location near the sea, many lakes, a large river basin, landforms, large forest areas, parks and meadows, street greenery, and relief (valleys and hills as illustrated on the Map in Figure 1). The climate of Szczecin and its surroundings is shaped primarily by the advection of polar and sea air masses. The proximity of large water reservoirs, i.e., the Baltic Sea and the Szczecin Lagoon, results in the formation of local breeze circulation affecting the course of the weather.  
The Baltic Sea and the Szczecinski Lagoon have a warming effect in the winter, and cause cooling in the summer. Important climatic factors include the latitude, terrain, and elevation above sea level. From the southwest to the northeast, through the center of the province extends the front moraine shaft, which clearly differentiates the spatial distribution of sunshine, temperature, precipitation, and wind speed on its northwestern and southeastern side. The main part of the baric systems moves from western directions. The shifting lowers with atmospheric fronts, which causes weather changes and strong and stormy winds. Spring and summer blades, although many, are less active and strong storm and glare winds.  
The Skagerrad lowers formations because of a wave disorder on a front approaching Norway--they typically move in a southeastern direction. Deepening rapidly, they cause storm weather. These occur most often in the winter and spring. Atmospheric circulation is formed under the influence of the Icelandic lower (especially in winter) and the Azores higher (mainly in summer). The climatic conditions in winter are significantly influencedby the strong seasonal Siberian High. Due to the northwestern extension, time differences between the Baltic coast and the southern ends of Poland are clearly visible. In summer, the day is more than an hour longer than in the uplands of southern Poland. In winter, the day lasts equally as long. The shift of about 40 min likewise occurs between the eastern and western parts of the country [72; 73].  
Due to the described specificity of the climate in the area of the city of Szczecin, which causes difficulties in exact weather forecasting, the authors of the work decided that it is worth checking how the task of prediction of selected weather conditions for this area will perform with a MLP model, whose use for the forecasting of selected weather conditions was presented in many research articles cited in the literature review.  
The location where the study was performed and the number of different predicted weather conditions included in the study are novel compared to the previous studies described in the literature that used machine learning (ML) methods. It is also a new and interesting approach of the authors to study the performance of the implemented MLP model for multiple different weather conditions, whereas the reviewed publications on this issue usually presented studies on a single weather parameter.