Engineering News-Record 7/11/2019 | Tidal Flooding Closing in on Coastal Infrastructure
Rising tides causing coastal flooding seem an obvious cause-and-effect matter to the most casual observer. NOAA employees are apparently casual observers.
Are not coastal areas flooding? Absolutely, and it’s devastating to coastal residents and industries now within the coastal freeboard, a factor of safety usually expressed in feet above a flood level for purposes of floodplain management.
No, Chicken Little, the tides are not rising due to anthropogenic – man-caused – “climate change”.
Land subsidence is the consequence of ground-water extraction along coastal areas to satisfy thirsty industries and the people living in those areas.
According to the US Geological Survey (real scientists):
“…Land subsidence has been observed since the 1940s in the southern Chesapeake Bay region at rates of 1.1 to 4.8 millimeters per year (mm/yr), and subsidence continues today.
This land subsidence helps explain why the region has the highest rates of sea-level rise on the Atlantic Coast of the United States. ”USGS: Land Subsidence and Relative Sea-Level Rise in the Southern Chesapeake Bay Region
Link to USGS Report: Land Subsidence and Relative Sea-Level Rise in the Southern Chesapeake Bay Region
Tides rise and fall twice each day. The farther north you are from the equator, the greater the difference between high and low tides.
Is the mean sea-level actually rising? Yes, according to NASA, a third federal bureaucracy, global mean sea level (GMSL) rises at a rate of 3.3 millimeters per year. 3.3 millimeters translates to 0.129921 inches, 0.0108268 feet. Source | NASA: Sea Level Change Observed From Space
GMSL naturally rises as the total volume of oceanic water increases due to melting glaciers. Also a natural process, GMSL will fall as we move into the next mini ice age.
Don’t curl up into the fetal position when I reveal to you how insignificant you are, all 7 billion of you, in the matter of global temperature changes. It’s not you, it’s that huge ball of fire 93 million miles away that determines the atmospheric temperature of the earth.
The 11-year solar cycle is now moving into what is called the Maunder Minimum which precedes all terrestrial ice ages in history.
Reference: Cornwall Alliance 3/27/2019 | Forget Warming, Here Comes Cooling: Scientists Announce Little Ice Age In Coming Decades
For peace of mind, consider the graphic showing the ISS transiting the moon and the sun to understand the magnitude of the sun which is 1 million times the size of the earth. The moon is merely 27% the size of the earth.
The next ice age is coming and GMSL will fall, irrespective of human activity.