If this synoptic chart were created in a GIS several layers of data would have been used to create it .name at least four layers that are needed to show all the information on this map

1. Topography layer: This layer would show the elevation and contours of the land, highlighting the different levels and features such as mountains, valleys, or coastal areas. It helps in understanding the relief and physical features present in the region.

2. Weather station layer: This layer would display the locations of weather stations, including their identifiers and relevant data such as temperature, wind speed, and atmospheric pressure. This information is crucial for analyzing current weather conditions and forecasting future changes.

3. Satellite imagery layer: This layer would provide high-resolution satellite images captured from space, showing the cloud cover, precipitation, and other atmospheric patterns. It helps in visualizing the actual weather systems and their movement across the area.

4. Oceanographic data layer: This layer would include information on sea surface temperatures, ocean currents, wave heights, and other relevant oceanographic data. This data is significant for analyzing maritime weather conditions and their impact on the overall weather patterns in the region.