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.
Centigrade 232 Centigrade 232 Centigrade 232 is an album and a book of poems by English writer and musician Robert Calvert, recorded in 1986 and released in 2007. The poem Centigrade 232 was set to music by Spirits Burning in 2001. Some titles were set to music by Hawkwind and issued as "The Brock/Calvert Project" in 2007. Calvert had regarded himself first and foremost as a poet and writer and his original involvement with the English rock group Hawkwind from 1971 was as a lyricist and narrator of "space-age poetry" at gigs. It was later as a solo performer and his second