Sea level the warmer water expands. For at least the last 100 years, sea level has been rising at an average rate of about per year. Most of this rise can be attributed to the increase in temperature of the sea and the resulting slight thermal expansion of the upper of sea water. Additional contributions, as much as one-quarter of the total, come from water sources on land, such as melting snow and glaciers and extraction of groundwater for irrigation and other agricultural and human uses. Pilots can estimate height above sea level with an altimeter set to a defined barometric pressure.
Under the Red Sea Sun Under the Red Sea Sun Under the Red Sea Sun (New York: Dodd, Mead & Company, 1946) is a book by Edward Ellsberg describing salvage operations of the many ships scuttled by the Italians to block the port of Massawa on the Red Sea coast of Eritrea during World War II. Massawa's excellent harbor was vital first to the Italian then to the British war effort. Ellsberg, a skilled writer, described how a small group of workers under his direction accomplished an almost Herculean task with virtually no resources. Much of the story is an entertaining account of the bureaucratic