Archives par mot-clé : Sea level

1988 Congressional climate change hearing: claims of accelerating sea level rise – failed

by Larry Hamlin, March 14, 2018 in WUWT

In June 23, 1988 the Senate Committee on Energy and Natural Resources held a hearing addressing the Greenhouse Effect and Global Climate Change.

Among the presenters at this hearing was Dr. James Hansen, Director, NASA Goddard Institute for Space Studies who introduced his infamous and now debunked global surface temperature model results with future temperature projections under three different scenarios of CO2 emissions growth that grossly over exaggerated resulting projected global temperature increases.

SEA LEVEL: Rise and Fall – Part 4a – Getting Even More of a Rise Out of Nothing

by Kip Hansen, February 14, 2018 in WUWT


Prologue:  I have been writing recently about Sea Level Rise, both as particular local examples (  Guam,  Canton,  Miami,   New York, and  NY/NJ  )  and in the series SEA LEVEL: Rise and Fall, of which this is the fourth-plus installment.

In Part 4, I showed how one gets a rise out of nothing, a neat trick performed by Nerem et al.   That’s R. Steven Nerem, of the CU Sea Level Research Group. The blinking image is the summary of that essay.

Remember when the islands of Tuvalu were going to be inundated by sea level rise? Never mind…

by A. Watts, February 9, 2018, in WUWT

Surprise! Poster child for sea level rise, Tuvalu, is actually growing!

From the “we told you so,  again, and again” department. We’ve had several articles about the island of Tuvalu and the ridiculous claims of sea level rise causing it to disappear, while at the same time they are building new hotels and airports to attract tourists. Willis has also had several articles on how Pacific atolls grow, and float, rather than sink as sea level advances.

Now, a study confirms what we’ve already known – atolls, and in particular Tuvalu is growing, and increasing land area. So much for climate alarmism. From Nature communications:

The fantasy of accelerating sea level rise just got hosed

by A. Watts, February 4, 2018 in WUWT

We’ve been told over an over again that global warming would melt the icecaps, and melt Greenland, and that would result in catastrophic sea level rise flooding cities. We’ve also been told that “sea level rise is “accelerating” but in an investigation done here on WUWT by Willis Eschenbach, Putting the Brakes on Acceleration, he noted in 2011 that there seems to be no evidence of it at all, and notes that sea level was rising faster in the first half of the record.

Latest Data Show NO SEA LEVEL RISE ACCELERATION Since 1993…Coasts: Less Than 2 Millimeters Rise Annually!

by P Gosselin, January 31, 2018 in NoTricksZone

Dr. Sebastian Lüning and Prof. Fritz Vahrenholt today here are asking how sea level rise is doing because as have not heard much about it lately. A good place to start is at Climate4You. Strangely the data go only until December 2016. And if you look at the data from the source form the University of Colorado, we find the same. So what’s with 2017?


SEA LEVEL: Rise and Fall – Part 4 – Getting a Rise Out of Nothing

by Kip Hansen, January 9, 2018 in WUWT

Prologue:  I have been writing recently about Sea Level Rise, both as particular local examples (  Guam,  Canton,  Miami,   New York, and  NY/NJ  )  and in the series SEA LEVEL: Rise and Fall, of which this is the fourth installment.

Series Take Home Messages:

  1. Overall, the seas have been rising, slowly and inexorably, since the end of the last Ice Age, with some blips and bumps along the way.  In general, they will continue to do so for the foreseeable future — at somewhere between 4-12 inches [10-30cm] per century.  This rate is an imminent threat to populated areas built nominally at today’s existing sea level.

  2. (…)

Evaluating biases in Sea Surface Temperature records using coastal weather stations

by C Kevin, January 8, 2018 in SkepticalScience

Science is hard. Some easy problems you can solve by hard work, if you are in the right place at the right time and have the right skills. Hard problems take the combined effort of multiple groups looking at the problem, publishing results and finding fault with eachother’s work, until hopefully no-one can find any more problems. When problems are hard, you may have to publish something that even you don’t think is right, but that might advance the discussion.

The calculation of an unbiased sea surface temperature record is a hard problem. Historical sea surface temperature observations come from a variety of sources, with early records being measured using wooden, canvas or rubber buckets (figure 1), later readings being taken from engine room intakes or hull sensors, and the most recent data coming from drifting buoys and from satellites.

See alos here

Wandering Thru The Tides

by Willis Eschenbach, December 30, 2017 in WUWT

I got to thinking about the records of the sea level height taken at tidal stations all over the planet. The main problem with these tide stations is that they measure the height of the sea surface versus the height of some object attached to the land … but the land isn’t sitting still. In most places around the planet the land surface is actually rising or falling, and in some places, it’s doing so at a surprising rate, millimeters per year.

Glaciers and Sea Level Rise

by Andy May, December 28, 2017 in WUWT

This is the seventh and last post in my series on the hazards of climate change. In this post we examine the effects of climate change on glaciers and sea level rise. The first six examined the effect of humans on the environment, the effect of the growing human population, climate change and the food supply, the cost of global warming, the effect of man and climate change on extinctions, climate (or weather) related deaths, and extreme weather and climate change.

SEA LEVEL: Rise and Fall – Part 3 – Computational Hubris

by Kip Hansen, December 19, 2017 in WUWT

There have been so many very good essays on Global Sea Level Rise by persons all of whom have a great deal more expertise than I.   Jo Nova hosts a dozen or so excellent essays, which point at another score of papers and publications, for the most part clearly demonstrating that there are two contrarian positions on sea level rise in the scientific community:  1) Sea level has risen, is rising and will continue to rise at a rate approximately 8-12 inches (20-30 centimeters) per century — due to geological and long-term climatic forces well beyond our control;  and 2a) Other than explicit cases of Local Relative SLR, the sea does not appear to be rising much over the last 50-70 years, if at all.  2b) If it is rising due to general warming of the climate it will not add much to position 1.

Shoreline Change in Atoll Reef Islands

in Friends of Science, December 2017

This study gives irrefutable evidence on the persistence of atoll reef islands in French Polynesia over the last five decades, as 92% of the 111 islands studied exhibited either areal stability or expansion since the 1960s. Only 8% of the 111 islands showed contraction in area. Tropical cyclone waves contributed to island upward growth, which reached up to 1 m in places, through the transfer of sediments up onto the island surface.