by University of Sydney, September 28, 2017 in WUWT
Recent findings suggest that episodes of very rapid sea-level rise of about 20m in less than 500 years occurred in the last deglaciation, caused by periods of catastrophic ice-sheet collapse as the Earth warmed after the last ice age about 20,000 years ago.
Lead author, PhD candidate at the University of Sydney, Kelsey Sanborn, has shown this sea-level rise event was associated with “drowning” or death of coral reefs in Hawaii.
See also here
by S. Zerbini et al., 2017 in Earth-Science Reviews
Zerbini et al. also investigated/tested for the existence of an acceleration of sea level rise in each of the six Mediterranean station’s data, reporting that “our analysis indicates that it is not possible to reliably state the existence of any acceleration, in the area of this study, considering the past 140 years or so, from 1870 through 2012.”
by Kip Hansen, September 13, 2017 in WUWT
I have written about sea level rise here: here, here, here, here and here. The previous essays are not prerequisites but are interesting specific examples.
There are two important points which readers must be aware of from the first mention of SLR:
SLR is a real imminent threat to coastal cities and low-lying coastal and near-coastal densely-populated areas.
SLR is not a threat to anything else — not now, not in a hundred years — probably not in a thousand years — maybe, not ever.
by Kenneth Richard, September 7, 2017 in NoTricksZone
This modern rate – just 0.17-0.18 of a meter per century – has remained relatively unchanged from the overall 20th century average, and there has been no statistically significant acceleration in the sea level rise rate (just 0.0042 mm/yr-²) since 1900.
by Roger H. Bezdek, August 2017 in SciRes
Our findings indicate that the water intrusion problems in the region are due not to “sea level rise”, but primarily to land subsidence due to groundwater depletion and, to a lesser extent, subsidence from glacial isostatic adjustment. We conclude that water intrusion will thus continue even if sea levels decline. These findings are critical because the water intrusion problems in the Chesapeake Bay—and elsewhere—cannot be successfully solved unless their causes are correctly identified and appropriate remedies are devised.
by Nils-Axel Mörner, August 5, 2017, in J. Eng.Sci.Invention
Sea level changes is a key issue in the global warming scenario. It has been widely claimed that sea is rising as a function of the late 20th’s warming pulse. Global tide gauge data sets may vary between +1.7 mm/yr to +0.25 mm/yr depending upon the choice of stations. At numerous individual sites, available tide gauges show variability around a stable zero level …
… In this situation, it is recommended that we return to the observational facts, which provides global sea level records varying between ±0.0 and +1.0 mm/yr; i.e. values that pose no problems in coastal protection.
See also here
by Roy W. Spencer, Ph. D., August 19, 2017 in GlobalWarming
Al Gore has provided a target-rich environment of deceptions in his new movie.
After viewing Gore’s most recent movie, An Inconvenient Sequel: Truth to Power, and after reading the book version of the movie, I was more than a little astounded. The new movie and book are chock-full of bad science, bad policy, and factual errors.
by Kenneth Richard, August 7, 2017 in NoTricksZone reposted Paul Homewood
In recent months, two new papers published in The Cryosphere have provided a condensed summary of the ice-melt and sea-level-rise consequences of global warming for the Arctic region.
1. Between 1900 and 2010, the Greenland Ice Sheet (GIS) has melted so extensively and so rapidly that the GIS ice-melt contribution to global sea level rise has amounted to 1.5 centimeters for the entire 110-year period. One-and-a-half centimeters. That’s 0.59 of an inch!
2. It gets worse. Between 1993 and 2010, the contribution to global sea level rise has been a disturbing 0.39 of a centimeter. Almost 4/10ths of a centimeter. That’s 0.15 of an inch!
by Robert W. Felix in ClimateChangeDispatch
That’s right, according to NASA, sea levels are going DOWN! This is big news. How come the media hasn’t mentioned it?
NASA satellite sea level observations for the past 24 years show that – on average – sea levels have been rising 3.4 millimeters per year. That’s 0.134 inches, about the thickness of a dime and a nickel stacked together, per year.
See also here (nasa.gov)
by Paul Homewood, July 25, 2017
I’ve looked at UK sea level rise, but what about global?
As you can see, the rate of rise was very similar between roughly 1930 to 1960, as it has been since 1990. We see the same pattern at UK sites.
David’s graph mirrors that of the original paper. As with most sources of sea level data, the scale is set to make the rise appear to be astronomic.
Given that the IPCC is forecasting a rise of a meter and more by 2100, a more appropriate scale would look like this …
See also here
by Willis Eschenbach, July 20, 2007 in WUWT
There’s a recent and good post here at WUWT by Larry Kummer about sea level rise. However, I disagree with a couple of his comments, viz …
This question all revolves around whether the rate of sea level rise is relatively steady, or whether it is accelerating … so how do we tell the difference?
by Ph.D. Roy Spencer, July 21st, 2017
When I read that, I (like everyone else) assumed that corrections to the satellite sea level data since 1993 have now led to a revised trend toward faster (not slower) sea level rise. Right?
by David Middleton, July 17, 2017 in WUWT
When the observations don’t match the models, adjust the observations…
So… They accomplished accelerated sea level rise by slowing down the past…
by Paul Homewood, July 10, 2017
CBS have a report on rising sea levels at Tangier Island, in Chesapeake Bay here
The video is worth watching. The CBS reporter makes the usual attempts to blame it on “climate change”, but the locals know too much to fall for that old pony.
They know that sea levels have been rising, and land eroding, since 1850.
And they are right. Tide gauges in the area, such Sewell Point, Norfolk, confirm that sea levels have been steadily rising for a long time, long before recent rises in emissions of CO2.
by P. Gosselin, July 8, 2017 in NoTricksZone