What altimeter features are essential for backcountry skiing?

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Accurate Altitude Readings When choosing an altimeter for backcountry skiing, look for a device that can provide accurate altitude readings. This can be achieved with a barometric altimeter, which uses changes in air pressure to calculate altitude. Some high-end models can also use GPS and GLONASS signals to provide precise altitude readings. For example, the Suunto Core All Black altimeter can display altitude to an accuracy of 5 meters (16 feet).
Understanding Air Pressure Trends A key feature of a good altimeter for backcountry skiing is the ability to display air pressure trends. This can help users track changes in weather patterns and anticipate potential hazards such as avalanches or storms. For example, a drop in air pressure of 0.5-1.0 millibars per hour can indicate a rapidly developing storm system. By monitoring air pressure trends, users can make informed decisions about route selection and timing.
Temperature and Wind Indicators Some altimeters also include temperature and wind indicators, which can be useful for backcountry skiing. For example, a temperature gauge can help users track changes in snow conditions and anticipate potential hazards such as crevasses or serac collapses. A wind indicator can also help users anticipate potential hazards such as wind slab formation or cornice collapse. When choosing an altimeter, look for a model that includes these features to stay ahead of the weather and terrain.