Which chart is specifically designed for volcanic ash transportation forecasts?

The Volcanic Ash Forecast Transport and Dispersion Chart is specifically created to provide information about the movement and dispersion of volcanic ash in the atmosphere. This chart is crucial for aviation safety, particularly for flight operations in areas that may be affected by volcanic eruptions. It takes into account various meteorological factors, such as wind patterns, to predict how ash will be transported over time, which is essential for flight planning and ensuring that aircraft can avoid hazardous conditions.

In contrast, the Radar Summary Chart focuses on precipitation and storm movements but does not provide specific information on volcanic ash. The Surface Analysis Chart presents overviews of pressure systems and fronts, essential for understanding general weather patterns but not tailored to ash dispersion. Lastly, the Weather Depiction Chart is used to represent overall weather conditions, such as cloud cover and flight categories, but again, it does not address the specific hazards presented by volcanic ash. Therefore, the Volcanic Ash Forecast Transport and Dispersion Chart remains the dedicated resource for understanding volcanic ash behavior in the atmosphere.