James Hansen at #AGU15 Why Are Scientists Holding Back on Sea Level Projections?

Session today:

James-Hansen-250

James Hansen, Climate Science, Awareness and Solutions

Hansen coauthored a widely discussed paper this year that projects sea levels could surge up to 10 feet this century. He will discuss what he sees as the dangers of scientists’ reluctance to seriously consider such bold assertions. (He has based his estimates in part on accumulating evidence that the great ice sheets are undergoing the start of an accelerating collapse—the elephant in the room left out of many other projections.)

Monday, Dec. 14, 1:40-2:00pm, 102 Moscone South.   U13A-01


Maybe it is simply because there has been no acceleration in sea level rise despite model predictions that say there will be?

The graph below from Willis Eschenbach suggests there is no cause for alarm.lack of acceleration sea level

 

 

 

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bh2
December 14, 2015 3:33 pm

The more “forecasts” Hansen promotes to the world which will inevitably fail to materialize, the more is the entire alarmist agenda undermined by its very own poster boy. Eventually he’ll become an acute embarrassment to “the cause”. But in the meantime, …
By all means let Doctor Hansen, PhD and renowned “Climate Scientist”, speak out. The more and louder the better. Encourage him. Lend him a bullhorn. Laud him as an authentic and authoritative voice of alarmism (just as he surely is). The wilder are his “scientific” claims, the sooner will they be (once again) revealed as utter tosh. He is truly the gift that keeps on giving.
Sun Tzu wisely advised to interfere in no way with operations by an opposing general while he is making a serious mistake.

bw
December 14, 2015 3:40 pm

Plenty of old tide gages around the world. Most common value for those located in geologically stable areas show 2mm per year trend. That is about 8 inches in 100 years.
Plenty of photos of seaside landmarks, such as the Statue of Liberty or Brooklyn Bridge towers being constructed in the 1880s. Compare those photos showing sea level to to 2015 and there is no visible change in sea level for 130 years in New York harbor. The daily tide there has a range of 5 feet. Most sea level infrastructure is already designed to tolerate a flood stage of around 10 feet above MSL.
Most any geologist will tell you that MSL for the current interglacial was about 1 meter higher 7000 years ago. Roman era docks are mostly silted in, with sea coast receded from 2000 years ago, but those areas are in a tectonically active area. Some harbors have lifted, some have subsided by various amounts.
See also the Tasmanian tide gage that has been analyzed to death. http://www.john-daly.com/deadisle/
Nothing alarming.

DMA
December 14, 2015 3:58 pm

I am nearly certain that Nils-Axel Mörner said that the maximum rate of sea level rise at the end of the last ice age when the massive continental ice sheets were disappearing was less than 1 meter per century. That sheet was 2 miles thick here in Montana. What possible mechanism is available to reduce the Antarctic ice twice as fast as that.

Reply to  DMA
December 14, 2015 4:44 pm

Human CO2 silly. Duh! (sarc)

Marcus
December 14, 2015 4:14 pm

Dear Anthony,
When you get back you need to start a new section for your WUWT page.. Let’s call it ” The Wall of Shame ” !! It should consist of a list of all these wacky predictions from so called scientists, with all relevant info about said wacky scientist’s predictions, including Email address, workplace and full frontal picture ( to be used later when the lynching starts) !!
Thank you for your time
Marcus
P.S. Try not to have too much fun down there !! LOL

sunsettommy
December 14, 2015 4:27 pm

“James Hansen at #AGU15 Why Are Scientists Holding Back on Sea Level Projections?”
Maybe because he is delusional?
Here is a link to a chart about projected Sea Level changes,he is a the very top:
http://c3headlines.typepad.com/.a/6a010536b58035970c015432695991970c-pi
From CH3
http://www.c3headlines.com/2011/05/memo-to-republicans-sea-levels.html

Latitude
December 14, 2015 4:38 pm

sea levels could surge up to 10 feet this century.
==
yep and no one in Miami cares what Hansen thinks
http://www.planetware.com/photos-large/USFL/florida-miami-south-beach.jpg

Reply to  Latitude
December 14, 2015 5:02 pm

“sea levels could surge up to 10 feet this century”
Good! Just puts me that much closer to the beach that is currently being hogged by elites like Al Gore. A little equal opportunity would be nice. 🙂

Jeff (FL)
Reply to  Latitude
December 15, 2015 3:12 am

You appreciate3 those are all Canadians fleeing Trudeau the Younger and/or the Canadian Winter? 🙂
The big question this season is ‘Will they go back?’.

Reply to  Jeff (FL)
December 15, 2015 12:35 pm

Any day now, the shores of Hudson Bay will look like that in January and with all the polar bears dead and gone, Spring break will be off the hook, man. I can set you up with a nice piece of beachfront ( a couple miles back for now) where you can build your tiki bar or resort hotel. Quick though! Phones ringing like crazy from all those Paris delegates who realize their agreement isn’t going to do anything meaningful except create some more poverty.

David L. Hagen
December 14, 2015 4:40 pm

Danger: Comet coming
The greatest danger of a “10 ft surge” is not over a century of warming, but from a millisecond “splash” of a comet/asteroid. See Revelation 8:8-9

The second angel blew his trumpet, and something like a great mountain, burning with fire, was thrown into the sea, and a third of the sea became blood. A third of the living creatures in the sea died, and a third of the ships were destroyed.

Crater Location Diameter km
Vredefort Free State South Africa 300 km
Sudbury Ontario Canada 250 km
Chicxulub Yucatán Mexico 180 km diameter

Reply to  David L. Hagen
December 15, 2015 12:44 pm

Check out Shiva. Appears to be a crater off the West coast of India dated approx. 65 m yrs. 600kms X 400kms. I suggest it is the cause of the Deccan traps eruptions. Similarly, Siberian Traps were likely caused by a massive impact. I don’t understand why Shiva doesn’t get more attention. West coastal area of India apparently shows evidence of massive uplift characteristic of a crater edge. Chicxulub impactor may have broken up before hitting in two different locations, even possibly a few years apart. Might have affected some small islands in the vicinity! Ha!

David L. Hagen
Reply to  john harmsworth
December 15, 2015 1:22 pm

Thanks John
vis India Asteroid Killed Dinosaurs, Made Largest Crater?.
I recommend finding quantitative detailed support of the impact, then add it to the Wikipedia list. e.g., see: The Chicxulub-Shiva extraterrestrial one-two killer punches to Earth 65 million years ago Marine and Petroleum Geology Vol. 49, January 2014, Pages 203–207

Two large asteroids struck Earth at almost the same time, 65 million years ago, causing the major extinctions recognized as ending the Mesozoic Era. Although occurring close together in time, the Earth’s magnetic pole had moved from the South Pole to the North Pole in between, allowing a time difference between the impacts to be calculated. The first strike produced a ∼180 km diameter crater named Chicxulub on the Yucatan shelf of southern Mexico. The second hit the shelf of the northward drifting Indian continent in the southern Indian Ocean, producing a crater ∼450 × 600 km named Shiva. Hitherto, the main obstacle to verifying this scenario has been the paucity of geological sections containing evidence of both impacts. Here, we present such evidence, and conclude that the two impacts were separated by about 40,000 years.

David L. Hagen
Reply to  john harmsworth
December 15, 2015 1:29 pm

Deccan volcanism, the Chicxulub impact, and the end-Cretaceous mass extinction: Coincidence? Cause and effect?

A review of Deccan volcanism and the best age estimate for the Chicxulub impact provides a new perspective on the causes for the end-Cretaceous mass extinction and supports an integrated Deccan-Chicxulub scenario. This scenario takes into consideration climate warming and cooling, sea-level changes, erosion, weathering, ocean acidification, high-stress environments with opportunistic species blooms, the mass extinction, and delayed postextinction recovery.
The crisis began in C29r (upper CF2 to lower CF1) with rapid global warming of 4 °C in the oceans and 8 °C on land, commonly attributed to Deccan phase 2 eruptions.

With such rapid 8 °C natural warming, what is the concern the present minor anthropogenic warming?

December 14, 2015 4:43 pm

Gary Pearse wrote:
“There are no Keyneses or Hoyles nowadays who admitted they were wrong. When Keynes was asked how come he’s changed his turne, he remarked when the information changed, he changed his mind and “what do you do, sir?”
Nothing wrong with being wrong of course. If you don’t retract when you’re demonstrably wrong then you’re just a dick. If you tamper with data to avoid being shown to be wrong then you’re a charlatan and a fraud. If you do that and cause untold misery and death then you are a mass murderer. The only question then is can you claim insanity and diminished responsibility. The stakes are high now. It’s a fight to the death and I’m not at all surprised they’re going for the RICO angle on skeptics before the wheels of justice turn ponderously and grind inexorably in their direction.
When you play the game of climates you win or you die. Winter is coming …

James Strom
December 14, 2015 5:16 pm

Coincidentally, Drudge links to an account flooding in the Florida Keys today:
http://news.yahoo.com/florida-keys-flood-property-worries-seep-041916596.html;_ylt=AwrXnCa0xG5WwU0AQpbQtDMD;_ylu=X3oDMTByMjR0MTVzBGNvbG8DZ3ExBHBvcwM3BHZ0aWQDBHNlYwNzcg–
They’ve had a lengthy immersion, and some commenters are naturally blaming warming.

Don K
December 14, 2015 5:56 pm

If one checks the revealed scripture — IPCC AR5 Chapter 13 — I think one would find that the most pessimistic number they can conjure up for 21st century sea level rise based on known components of sea level change and extreme scenarios is a smidge under 1 meter. They expect substantially less. Perhaps Hansen hasn’t read it. Perhaps he has and disagrees. Seems Hansen is an apostate who denies the holy word and must be driven forth from the realm. … perhaps a RICO indictment …
BTW, the divine word handed down to man by the holy SCIENTISTS does indicate that based on the previous interglacial sea level rise many centuries from now when all the ice that is going to melt has melted and and the seas have warmed as much as they are going to warm will likely be over 5 but less than 10 meters above present. That’s WITHOUT manmade CO2.

Jeff (FL)
Reply to  Don K
December 15, 2015 3:15 am

{Shrug} It’s a schism in the Church. Always happens … part of God’s plan to limit the damage of organized religion. 🙂

Joey
December 14, 2015 9:37 pm

I have often wondered why, if the UN really believes their alarmism regarding sea level rise, they are spending billions of dollars renovating their headquarters in New York. You think they’d move to higher ground!

Eugene WR Gallun
December 14, 2015 11:43 pm

CO2 melts the earth!
Eugene WR Gallun

oppti
December 15, 2015 3:07 am

Lets bee serious-Gauges have long records.
Show me one that has no periodical movements.
Most I have seen indicates higher rise during the warm period. Or the period that used to be warm.
http://tidesandcurrents.noaa.gov/sltrends/50yr.htm?stnid=8518750

emsnews
December 15, 2015 4:46 am

We should give Hansen the King Canute Award for failed sea rise predictions.

indefatigablefrog
December 15, 2015 5:22 am

I notice that these days if you mistakenly comment on a thread inhabited by warmists and point out that a “prediction” has failed to correspond to the subsequent event – then it is common to to be tiresomely informed that the prediction was in fact a “projection”.
Usually this takes the form of the accusation that “then, you don’t understand the difference between a prediction and a projection”.
The leagues of warmists are apparently happy to allow themselves to be baffled with word-trickery.
The minions on internet threads appear to be quite eager to pull their own wool over their own eyes.

oppti
Reply to  indefatigablefrog
December 15, 2015 8:25 am

Prediction is the opposite of an educated guess?

thingadonta
December 15, 2015 5:49 pm

Official Sydney tide data shows barely any rise at all, so many agencies don’t publish it.
I grew up on the Sydney waterfront and we put a measuring stick in the 1970s at the point of the highest tide of the year, on the front lawn. The highest tide leaves a mark on the grass each year, which then dies and grows back over the next year. Most recent check in 2012 showed the highest tide level of the year hasn’t changed.
Cost of research: stick: free. Petrol to/from site: about $0.25.