American Meteorological Society Certification (AMS) Practice 2026 - Free Practice Questions and Study Guide

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What does "snow line" refer to in a climatic context?

The elevation above which snow remains year-round

In a climatic context, "snow line" refers to the elevation above which snow remains year-round. This concept is particularly important in understanding glaciation and snowpack development in mountainous regions. The snow line varies based on geographic location, climate, and season. For instance, in tropical mountainous areas, the snow line might be at a much higher elevation compared to polar regions.

The presence of a permanent snow line signifies that temperatures at that elevation are sufficiently low to prevent melting during warmer months, thus allowing for a continuous presence of snow. It is crucial for studies related to climate change, as shifts in the snow line can indicate rising temperatures and changes in precipitation patterns over time.

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The latitude where snowfall is most common

The temperature at which snow begins to fall

The geographic line marking cold regions

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