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.

The water column there exerts a pressure of more than one thousand times normal atmospheric pressure at sea level, ... Epson Toyocom develops new absolute pressure sensor. Aug 24, 2010. Protein ...

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 ...