You might think that clouds are clouds all over Earth, but that's not quite so.
If you're in the Southern Hemisphere, the clouds there are different, more abundant, and more reflective than clouds found in the Northern Hemisphere, a fact scientists are well familiar with, but have not been able to fully explain.Now, new research sheds more light on why clouds work differently in the two hemispheres, and in particular the role that updrafts play – the upward motion of warm air that leads to condensation and formation of clouds.
"This means that they influence the incident sunlight and also the thermal radiation emitted from the Earth's surface differently than in the north.", air massed at higher altitudes where it's less affected by local pollution. For temperatures between -24°C and -8°C , clouds over Punta Arenas formed ice an average of 10 to 40 percent less often than clouds over Leipzig., but the team also discovered something new.
To be as useful as possible, already complex climate models need to factor in regional differences, whether that's in built-up urban areas like Leipzig, areas with clearer air like Punta Arenas, or areas with a mix of human-made pollution and natural desert dust particles like Limassol.
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