Therefore, changes in the sea ice cover have a significant effect on the global energy balance.

因此，海冰覆盖状态的变化能给全球能量平衡带来巨大影响。

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A sea ice numerical simulation is useful for forecasting the status and variation of sea ice distribution and its effect on the global climate system with the development of numerical simulation.

随着模拟水平的不断提高，近年来海冰温度场的数值模拟正在用于对北极海冰场的预报以及全球气候变化的研究。

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Melting ice, droughts, earlier springs, as well as disappearing polar bears and frog extinctions are among the signs that global warming is already having an effect on the planet, experts say.

专家说，冰层融化，干旱，春季提早，以及北极熊和青蛙的消失，都在向我们发出信号：全球变暖已经在影响这颗星球了。

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Researchers are using a nuclear submarine to take them beneath the Arctic ice cap to study ocean currents that may have an effect on global climate.

CNN: Nuclear sub dives under the ice to explore climate change