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I don't understand how people can be so confident in the computer models that show that the Earth will become warmer and warmer. They even say that it's caused
by piotrjurkiewicz 10y ago
I don't understand how people can be so confident in the computer models that show that the Earth will become warmer and warmer. They even say that it's caused by human activity and it can be stopped if we avoid burning fuels, but we don't even have computer models that can predict the weather above ground for next week. So how can they predict exact temperature for next few hundreds years?
- nisa 10y agoI get your point but you are wrong. Climate change is based on a lot of historical data and measurements and theoretical models from various sources. Fracking depends on the geology and certain assumptions about what's going on while fracking and that everything is going according to a plan. Might be harmless in certain regions might be a problem in others. There is little data on fracking as it's recent technology - results on earthquakes are just in and don't look particular harmless.
- thangalin 10y agoPredicting exact temperature is impossible. Rather, we look at previous measurements (both direct and indirect) then use our knowledge of basic chemistry and physics to do what the dinosaurs could not: envision the future. 1. Experiment. https://youtu.be/kwtt51gvaJQ?t=36 https://youtu.be/kwtt51gvaJQ?t=36 2. Measure. http://climate.nasa.gov/vital-signs/carbon-dioxide/ http://climate.nasa.gov/vital-signs/carbon-dioxide/ 3. Extrapolate (from rate of change).