Parking place for my climatology posts
I find myself frequently copying & pasting the same basic climatology links, so I'm preparing a parking lot here where I can have a bunch of them available. Nothing much to see here right now, sorry!
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ElwoodBlues · M
Anonymized-hj says:
Anonymized-hj says:
https://www.globalchange.gov/browse/indicators/global-sea-level-rise
8000 years of sea levels
Sea levels have been quite stable for the last 2000 years while humans built coastal cities. Climate change now threatens to raise sea levels and swamp those cities.
The oceans have not risen a millimeter. Again you are WRONG
Sea level rise, mm/year, as measured by GPSAnonymized-hj says:
There has been no increase in sea levels.
Actually, sea levels have risen 6 to 8 inches in the past 100 years. But the process continues even after the warming stops.Between about 21,000 years and about 11,700 years ago, Earth warmed about 4 degrees C (7.2 degrees F), and the oceans rose (with a slight lag after the onset of warming) about 85 meters, or about 280 feet. However, sea levels continued to rise another 45 meters (about 150 feet) after the warming ended, to a total of 130 meters (from its initial level, before warming began), or about 430 feet, reaching its modern level about 3,000 years ago.
This means that, even after temperatures reached their maximum and leveled off, the ice sheets continued to melt for another 8,000 years until they reached an equilibrium with temperatures.
Stated another way, the ice sheets’ response to warming continued for 8,000 years after warming had already ended, with the meltwater contribution to global sea levels totaling 45 additional meters of sea-level rise.
From about 3,000 years ago to about 100 years ago, sea levels naturally rose and declined slightly, with little change in the overall trend. Over the past 100 years, global temperatures have risen about 1 degree C (1.8 degrees F), with sea level response to that warming totaling about 160 to 210 mm (with about half of that amount occurring since 1993), or about 6 to 8 inches. And the current rate of sea-level rise is unprecedented over the past several millennia.
This means that, even after temperatures reached their maximum and leveled off, the ice sheets continued to melt for another 8,000 years until they reached an equilibrium with temperatures.
Stated another way, the ice sheets’ response to warming continued for 8,000 years after warming had already ended, with the meltwater contribution to global sea levels totaling 45 additional meters of sea-level rise.
From about 3,000 years ago to about 100 years ago, sea levels naturally rose and declined slightly, with little change in the overall trend. Over the past 100 years, global temperatures have risen about 1 degree C (1.8 degrees F), with sea level response to that warming totaling about 160 to 210 mm (with about half of that amount occurring since 1993), or about 6 to 8 inches. And the current rate of sea-level rise is unprecedented over the past several millennia.
8000 years of sea levels
Sea levels have been quite stable for the last 2000 years while humans built coastal cities. Climate change now threatens to raise sea levels and swamp those cities.