Storms are a concern, not rising sea levels (Greer)
A recent article "Rising seas may cost Delaware $9B over 20 years" contained much questionable information from a new study, "HIGH TIDE TAX", from "The Center for Climate Integrity" which "supports litigation and advocacy to hold the fossil fuel industry accountable" for climate change. They want to tax and sue fossil fuel companies, but who would actually pay the cost? The people, of course, in higher costs for everything.
The $9 Billion is not an estimate of actual damages which might occur but an estimated cost to build 941 miles of seawalls "to hold off climate-driven floodwaters." But according to NOAA, Delaware only has 381 miles of coastline, including the extra length from tidal inlets.
The sea level off Delaware has risen about 1 foot in the last 100 years, partly because the land is sinking, and will likely rise another 3 inches in 20 years. But compare this to the 7 foot storm surge at Lewes DE from "The Gale of 1878" which brought hurricane force winds and flooding to all three counties. Sea walls may be a good idea in some places, but the real concern should be storms which could happen now, not in 20 or 100 years. Prepare for storms and this will take care of sea level rise.
Computer models are flawed. Nationwide, the study estimates a cost of more than $400 billion to build over 50,000 miles of sea walls in the next 20 years. The study uses computer models which assume that CO2 from human sources is “trapped” in the atmosphere causing global warming, but is this really true? Two new papers (H. Harde 2019, E. Berry 2019) argue that CO2 molecules must act the same way in the environment whether they are of natural or human origin, and must flow out of the atmosphere in the same way. Thus seems so obvious that it would hardly need mentioning. “Flow out” would be by plant photosynthesis, for example.
The two papers and the Intergovernmental Panel on Climate Change (IPCC) models agree that CO2 flows into the atmosphere are about 5 percent human and 95 percent natural. The papers argue that the flows would reach a balance where the ratio of the flows out must be in the same ratio as the flows in, that is 5 percent human, 95 percent natural. They calculate residence times of about three to five years.
But the IPCC models assume that “human CO2” does not flow out at the same rate as “natural CO2” but instead builds up in the atmosphere – currently to 32 percent human/ 68 percent natural – with a residence time of hundreds or even thousands of years. Both papers show volumes of data confirming their conclusions, and exposing the errors of the IPCC models. This means that most increased atmospheric CO2 must be from natural sources and is consistent with increased temperatures from solar activity.
John Greer, Jr. B. Chem. E., P.E. (ret.)