NATS 1510 Lecture Notes - Lecture 5: Microsoft Powerpoint, Fossil Fuel, Atmospheric Pressure
4 Nov 2016
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The main process that created nitrogen is denitrification (anaerobic bacteria: nitrate and nitrite is made into nitric oxide, nitrous oxide, and molecular nitrogen. Nitrogen is removed by aerobic bacteria (they consume oxygen) and ammonia is produced. Nitrogen fixation is the sink of nitrogen. Methods of discovery of basic gasses and their nick names (no dates) Ppm, ppb, conversion of % and backwards. Questions related to the nitrogen cycle and the great oxygenation event. 80 mc and 10 fill in the blanks. 5-7 pm on wednesday, october 12th cb 120. What controls pressure, density, and temperature in the atmosphere. Concentration of gasses, mostly nitrogen and oxygen (99% of the atmosphere) controls pressure and density (o2, n2) Temperature is controlled by ventrical distribution of gasses that absorb uv and thermal ir radiation (o3, o2, n2) Standard atmospheric sea level pressure on earth is 1,013 hpa (hecta-pascal, 1 hpa=100 pascal) Pascal (pa) is unit of pressure= 1 newton/m2.
