Zero elevation is defined as the isobar where the atmospheric pressure is equal to 610.5 Pa (for reference, “sea level” on earth has an atmospheric pressure of 101.5 kPa).

The sensors are compact, solar powered devices, roughly a foot in length, placed in five locations in Annapolis.

Now in its fourth year, the sea sensor project is now slated to receive $5 million from Congress. It is secured by U.S. Sens. Jon Ossoff and Raphael Warnock, and U.S. Rep. Earl L. “Buddy” Carter to ...

On Sunday, January 19, 2020, Heathrow recorded the highest mean sea level pressure in more than 300 years of London-area weather records. Image credit: Photo by Jack Taylor/Getty Images.

The sensors are compact, solar-powered devices, roughly a foot in length. They are located at City Dock, the Annapolis Yacht Club, the Eastport Yacht Club, Annapolis Fleet Reserve, and the ...