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In the context of climate change, describe what is happening to the zone of accumulation and the zone of ablation in glaciers today.

A. The zone of accumulation is decreasing, and the zone of ablation is increasing.
B. Both the zone of accumulation and the zone of ablation are decreasing.
C. Both the zone of accumulation and the zone of ablation are increasing.
D. The zone of accumulation is increasing, and the zone of ablation is decreasing.

Answer :

Final answer:

The zone of accumulation in glaciers is decreasing while the zone of ablation is increasing as a result of climate change. This shift indicates glaciers are experiencing a negative budget, with more ice melting away compared to what is gained through snowfall, leading to glacier retreat.

Explanation:

Glacial Zones in the Context of Climate Change

In the context of climate change, what is happening to the zone of accumulation and the zone of ablation in glaciers today? The correct answer is a) The zone of accumulation is decreasing, and the zone of ablation is increasing. Glaciers form in the zone of accumulation, where snowfall exceeds melting, and this region is beginning to shrink. Conversely, the zone of ablation, where melting and sublimation remove more ice than is added by snowfall, is expanding due to increased temperatures contributing to more significant melt. The equilibrium line between these zones is also shifting, indicating a change in the overall health and balance of these icy giants.

Due to global warming, glaciers on a global scale are experiencing a negative budget, where their mass loss exceeds the mass gain from new snowfall. This leads to glacier retreat, reduction in ice volume, and rising sea levels, among other impacts on the climate system and environment. Cool summers can bolster glacial growth, but the current trend of warmer summers has been leading to the shrinkage of these critical climate players.

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