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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: combjelly who wrote (966436)	9/22/2016 11:40:27 AM
From: Bonefish	Read Replies (2) \| Respond to of 1574786

Sea level has risen about 400 feet in the last 22k years. How much of that is due to thermal expansion vs melting?

To: combjelly who wrote (966436)	9/22/2016 3:37:08 PM
From: Taro	Read Replies (2) \| Respond to of 1574786

During the last 22k years has sea level risen? Yes. More importantly, it has been rising very quickly since 1900. Some disagreement with your claims right here: "Scientists: Sea Levels Are Barely Rising — And The Rise Is ‘Not Anthropogenic In Origin’ On second thought, perhaps it is defensible that scientists are surprised today’s “rapid” sea level rise has not already inundated the world’s coasts like it does in doomsday movies. After all, this sea-levels-are-dangerously-rising narrative has become so commonly headlined in the popular media that it is effectively considered an unquestioned “fact” that needs no further investigation. But some scientists have actually taken the time to investigate relative sea level rise in long-term records from tide gauges. And what they have found is that in some locations sea levels are rising, in other locations sea levels are falling, and that most of the world’s tide gauges show that sea levels are stable, with no significant trends either way. In fact, scientists have found that the overall rate of rise from the 19th/20th centuries to now — including the most recent decades — has only been about 0.3 mm/yr to 1 mm/yr, which is about 1 to 4 inches per century. These modest rates are well within the range of natural variability. Beenstock et al., 2015 “Using recently developed methods for non-stationary time series, we find that sea levels rose in 7 % of tide gauge locations and fell in 4 %. The global mean increase is 0.39–1.03 mm/year.” Parker and Ollier, 2016 “Tide gauges provide the most reliable measurements, and best data to assess the rate of change. We show as the naïve averaging of all the tide gauges included in the PSMSL surveys show “relative” rates of rise about +1.04 mm/year (570 tide gauges of any length). If we consider only 100 tide gauges with more than 80 years of recording the rise is only +0.25 mm/year. This naïve averaging has been stable and shows that the sea levels are slowly rising but not accelerating. … We conclude that if the sea levels are only oscillating about constant trends everywhere as suggested by the tide gauges, then the effects of climate change are negligible, and the local patterns may be used for local coastal planning without any need of purely speculative global trends based on emission scenarios.” Furthermore, even in the regions of the world where sea levels are indeed rising, and rising rapidly (i.e., the tropical Pacific), scientists have acknowledged that an anthropogenic fingerprint cannot even be detected in the sea level rise trends. Natural oscillations related to internal ocean processes are predominantly what drive sea level changes, not anthropogenic CO2 emissions. - See more at: notrickszone.com