Monday, 21 October 2019

Carbon dioxide in the atmosphere.

This data is shown as a bar graph in Fig 7 of Climate Change Drivers, Pangburn. The paleo estimates are near the minimum of the range determined by Berner as shown in the graph at Climate and the Carboniferous

Carbon dioxide levels
ppmv
40,000Exhaled breath
20,000No symptoms in healthy young people below this level
8,000OSHA limit for 8 hr exposure
5,000OSHA limit for continuous exposure
5,000Approximate level 500 million years ago
1,500Artificial increase in some greenhouses to enhance plant growth
1,000Approximate level 100 million years ago
1,000Common target maximum for ventilation design for buildings
405Current atmospheric level
275Atmospheric level before industrial revolution
190Atmospheric level at end of last glaciation
150All land plants and animals become extinct below this level.
Land plants become extinct because they are unable to reproduce. Land animals then starve.

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Climate modeling fraud

" The data does not matter... We're not basing our recommendations on the data; we're basing them on the climate models. "...