The boundary between the Earth's atmosphere and outer space is commonly defined by the Kármán line, which is located at an altitude of 100 kilometers (about 62 miles) above sea level. However, the atmosphere extends much further, with significant portions still present up to about 1,000 kilometers (620 miles) in altitude. Therefore, while the Kármán line serves as a reference point for the edge of space, the atmosphere itself continues to exist well above this level.
Halifax is approximately 30 meters (98 feet) above sea level at its highest point.
Mount Taal is approximately 1,020' (311 m) above sea level. Mount Taal is located in the Philippines and currently has 47 craters.
The exosphere begins around 600 km above sea level and extends upwards to about 10,000 km. At this height, the atmosphere is extremely thin, and it gradually transitions into outer space.
sea level
Mean sea level (MSL) which is the average level of the sea. Determinig "sea level" is a very complex measurement. All other altitude measurements in aviation, in one way or another, are referenced from the mean sea level.
110 metres above sea level
at sea level
It is 544 feet above sea level.
It is 781 feet above sea level.
Part of it is at sea level. The highest point is 18.04 ft above sea level.
500 ft above sea level
Elevation, altitude, height above sea level.
0 to 12 m above sea level (it is just on the shores of the Caribbean Sea).
Buckingham, Florida is approximately 30 feet above sea level.
They are measured by how far above the ocean they are. The ocean is called "sea level". Sea level is 0.
Fredericksburg, Virginia is approximately 36 feet above sea level.
Key West is 18 feet above sea level.