Astronomy 1021 Lecture Notes - Lecture 13: Ammonia, Ammonium Hydrosulfide, Galilean Moons
19 Mar 2016
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Document Summary
The curent co2 concentration in earth"s atmosphere is the highest in at least 500. Global temperatures are unquestionably rising steadily: temperature: +1 degree since 1860; about 0. 5 degree since 1950, current rate: about 0. 2 degrees per decennium, but rate is increasing! How do we measure temperatures rising: measure temperatures all over the globe. Reproducibility different data sets yield the same responses: patterns are extremely similar, at the data is receiving the same conclusions, the temperature increase is consistent with human production of greenhouse gases. Natural effects: we don"t expect to see peaks, but there is. Jovian planets have a different composition from the terrestrial planets: they are mostly gas and ice giants, planetesimals: seeds that create planets. Jovian planets grow to about 10x earth"s size before they begin accreting hydrogen (h) and helium (he) gases: jupiter. Jovian planets have no solid surfaces: their layers are different for different planets.
