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Does anyone know how these averages are calculated? Is it a straight average of the temperature of each square mile of the entire globe, or are there weights fo
by dundercoder 3y ago
Does anyone know how these averages are calculated? Is it a straight average of the temperature of each square mile of the entire globe, or are there weights for regions or terrain types?
- civilitty 3y agoA grid is overlayed over the Earth and a temperature is calculated for each cell. Over the continental US and Europe most of the numbers are determined using weather stations but where sensor data is unavailable, like most of the oceans, a temperature is calculated indirectly using satellite data and a bunch of other sources. The grids for the northern and southern hemisphere are averaged separately and then combined with a weight to eliminate bias towards the northern hemisphere (since most of the weather stations are concentrated in the northern half of the planet). There are lots of different models for this calculation and different agencies use ones tailored to their needs and data quality.
- NotGMan 3y agoBut how can this method be accurate due to mass urbanization/concretization as that increases heat instead of eg a forest? This would then apply that it's not "global warming" but merely the effect of concrete heat capture and emission and not CO2 related? How can they then say this is "human gas pollution related"? Where am I wrong (serious question)?
- deleted 3y ago[deleted]