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This figure shows average absolute sea level change, which refers to the height of the ocean surface, regardless of whether nearby land is rising or falling. Satellite data are based solely on measured sea level, while the long-term tide gauge data include a small correction factor because the size and shape of the oceans are changing slowly ...
The global average sea level has risen about 25 centimetres (9.8 in) since 1880. [1] Sea surface height change from 1992 to 2019: Blue regions are where sea level has gone down, and orange/red regions are where sea level has risen (the visualization is based on satellite data). [2]
Baart et al. (2012) show that it is important to account for the effect of the 18.6-year lunar nodal cycle before acceleration in sea level rise should be concluded. [25] Based on tide gauge data, the rate of global average sea level rise during the 20th century lies in the range 0.8 to 3.3 mm/yr, with an average rate of 1.8 mm/yr. [26]
A chilling animation from Nasa shows how far the sea level has risen in the past 30 years. “As the planet warms and polar ice melts, our global average sea level is rising,” Nasa wrote ...
Technical note: the SVG code for the chart area background and gridlines was automatically generated by the "Line charts" spreadsheet linked at User:RCraig09/Excel to XML for SVG. The traces and colored areas were made in Inkscape. Other additions and adjustments were made in a text editor.
The global MSL is a type of vertical datum – a standardised geodetic datum – that is used, for example, as a chart datum in cartography and marine navigation, or, in aviation, as the standard sea level at which atmospheric pressure is measured to calibrate altitude and, consequently, aircraft flight levels.
Comparison of two sea level reconstructions during the last 500 Myr: Exxon curve and Hallam curve. The scale of change during the last glacial/interglacial transition is indicated with a black bar. The sea-level curve (also known as the eustatic curve) is the representation of the changes of the sea level relative to present day mean sea level ...
English: Chart showing global average sea surface temperature over time, beginning in 1880, with annual average and 5-year smoothed average NASA GISS data source: Link to NASA GISS data access page (click on "Annual Mean Temperature Change over Land and over Ocean") and direct link to chart data; Thicker line is 5-year average