Researchers tracked 724 Northern Hemisphere lakes from 2000 to 2022; above critical winter temperatures, ice-loss sensitivity rose up to 22-fold and could shorten seasons by 40 days

Winter ice on lakes plays an important role in keeping lakes healthy by controlling water temperature, supporting aquatic life and helping maintain the natural balance of freshwater ecosystems. However, scientists say this seasonal ice cover is disappearing faster than expected as the climate continues to warm.

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