"Sea level rise, more than temperature, is a better gauge of climate change in action" and its accelerating. It appears much of the initial sea level rise was due to water temperature increase while the acceleration recently is due to melting ice.

Perhaps Bobby can marshall his icebergs to form Noahs arks to save the world.

Let us see how Boby bonehead spins this.

https://s.abcnews.com/images/Technology/WireAP_41afef809fcd4c929d795ffb87c32079_12x5_992.jpg

http://abcnews.go.com/Technology/wireStory/satellites-show-warming-accelerating-sea-level-rise-53027617


Quote:

Satellites show warming is accelerating sea level rise By SETH BORENSTEIN, AP SCIENCE WRITER WASHINGTON — Feb 12, 2018, 4:35 PM ET New satellite research shows that global warming is making seas rise at an ever increasing rate. Scientists say melting ice sheets in Greenland and Antarctica is speeding up sea level rise so that by the year 2100 on average oceans will be two feet higher than today, probably even more. Melting ice sheets in Greenland and Antarctica are speeding up the already fast pace of sea level rise, new satellite research shows. At the current rate, the world's oceans on average will be at least 2 feet (61 centimeters) higher by the end of the century compared to today, according to researchers who published in Monday's Proceedings of the National Academies of Sciences. Sea level rise is caused by warming of the ocean and melting from glaciers and ice sheets. The research, based on 25 years of satellite data, shows that pace has quickened, mainly from the melting of massive ice sheets. It confirms scientists' computer simulations and is in line with predictions from the United Nations, which releases regular climate change reports. "It's a big deal" because the projected sea level rise is a conservative estimate and it is likely to be higher, said lead author Steve Nerem of the University of Colorado. Outside scientists said even small changes in sea levels can lead to flooding and erosion. "Any flooding concerns that coastal communities have for 2100 may occur over the next few decades," Oregon State University coastal flooding expert Katy Serafin said in an email. Of the 3 inches (7.5 centimeters) of sea level rise in the past quarter century, about 55 percent is from warmer water expanding, and the rest is from melting ice. But the process is accelerating, and more than three-quarters of that acceleration since 1993 is due to melting ice sheets in Greenland and Antarctica, the study shows. Like weather and climate, there are two factors in sea level rise: year-to-year small rises and falls that are caused by natural events and larger long-term rising trends that are linked to man-made climate change. Nerem's team removed the natural effects of the 1991 Mt. Pinatubo eruption that temporarily chilled Earth and the climate phenomena El Nino and La Nina, and found the accelerating trend. Sea level rise, more than temperature, is a better gauge of climate change in action, said Anny Cazenave, director of Earth science at the International Space Science Institute in France, who edited the study. Cazenave is one of the pioneers of space-based sea level research. Global sea levels were stable for about 3,000 years until the 20th century when they rose and then accelerated due to global warming caused by the burning of coal, oil and natural gas, said climate scientist Stefan Rahmstorf of the Potsdam Institute in Germany, who wasn't part of the study. Two feet of sea level rise by the end of the century "would have big effects on places like Miami and New Orleans, but I don't still view that as catastrophic" because those cities can survive — at great expense — that amount of rising seas under normal situations, Nerem said. But when a storm hits like 2012's Superstorm Sandy, sea level rise on top of storm surge can lead to record-setting damages, researchers said. Some scientists at the American Geophysical Union meeting last year said Antarctica may be melting faster than predicted by Monday's study. Greenland has caused three times more sea level rise than Antarctica so far, but ice melt on the southern continent is responsible for more of the acceleration. "Antarctica seems less stable than we thought a few years ago," Rutgers climate scientist Robert Kopp said.

Why show a pic of flooding caused by normal weather?

Are you trying to scare everyone Al Gore style?

Gordon wrote on Feb 13^th, 2018 at 9:56pm:

Why show a pic of flooding caused by normal weather? Are you trying to scare everyone Al Gore style?

Perhaps Monk is feeding him this stuff?

Bobby. wrote on Feb 13^th, 2018 at 9:58pm:

Gordon wrote on Feb 13th, 2018 at 9:56pm: Why show a pic of flooding caused by normal weather? Are you trying to scare everyone Al Gore style? Perhaps Monk is feeding him this stuff?

Of course Bobby.  That's a good Mod.  Accuse someone of being the errand boy of someone else who is perfectly capable of posting here if he wants to.

'Atta boy!

Apologise to Unforgiven and be forgiven.

Gordon wrote on Feb 13^th, 2018 at 9:56pm:

Why show a pic of flooding caused by normal weather? Are you trying to scare everyone Al Gore style?

You don't scare easy. Is your confidence because you're wearing a super-sized diaper?

Bobby. wrote on Feb 13^th, 2018 at 9:58pm:

Gordon wrote on Feb 13th, 2018 at 9:56pm: Why show a pic of flooding caused by normal weather? Are you trying to scare everyone Al Gore style? Perhaps Monk is feeding him this stuff?

Bobby the bonehead, you are an unmitigated tosser and unfit for moderator of this board by your insane prejudice.

Unforgiven wrote on Feb 13^th, 2018 at 10:19pm:

Gordon wrote on Feb 13th, 2018 at 9:56pm: Why show a pic of flooding caused by normal weather? Are you trying to scare everyone Al Gore style? You don't scare easy. Is your confidence because you're wearing a super-sized diaper?

No that's aussie when he's driving his pedicab. He doesn't want to miss a fare by stopping for a pee.

Wonder how he hadles #2s.

Seth Borenstein? ;D ;D ;D ;D ;D

From your reference "Sea level rise is caused by warming of the ocean and melting from glaciers and ice sheets. The research, based on 25 years of satellite data, "

From Our ABC -"Sea levels have been recorded by a series of four satellites, starting with the 1992 launch of the TOPEX/Poseidon satellite, in addition to long-term data captured by tidal gauges."
http://www.abc.net.au/news/science/2018-02-13/25-years-of-satellite-data-confirms-global-sea-level-rise-rate/9416570

Now Topex had an accuracy of 4.2cm (42mm). "Launched in 1992, TOPEX/Poseidon is a joint venture between CNES and NASA that measured ocean surface topography to an accuracy of 4.2 cm,"

https://sealevel.jpl.nasa.gov/missions/topex/

Replaced by Jason-1 - "Jason-1, a follow-on to the highly successful Topex/Poseidon mission, measures ocean-surface topography to an accuracy of 3.3 centimeters ".
https://sealevel.jpl.nasa.gov/files/ostm/jason-1-fact-sheet-200610.pdf

Replaced by Jason-2 -"Maintain the same measurement accuracy of Jason (3.3 cm) with a goal of achieving 2.5 cm"
https://sealevel.jpl.nasa.gov/missions/ostmjason2/jason2factsheet/

Replaced by Jason-3 -"The altimeter will measure sea-level variations over the global ocean with very high accuracy (as 1.3 inches or 3.3 centimeters, with a goal of achieving 1 inch or 2.5 centimeters)"
https://sealevel.jpl.nasa.gov/missions/jason3/

Now seeing as all those are in centimetres, I will let you do the conversion to millimetres.

And seeing SLR is being measured in millimetres, I will let you work out how far down in the noise the signal will be.

Now the tide gauges are different, being tied to the ground. So they are affected by isostatic rebound in some places, subsidence in others and some showing no land displacement. I will let you work out how you estimate SLR from those.

Sea level rise from ocean warming is easy to calculate to a reasonable accuracy.

I suggest that even denizen lee could perform those calculations with the help of a high school student.

Unforgiven wrote on Feb 13^th, 2018 at 11:30pm:

Sea level rise from ocean warming is easy to calculate to a reasonable accuracy. I suggest that even denizen lee could perform those calculations with the help of a high school student.

Wow. An article about SLR from 25 years of satellite data and he has fled back to ocean warming calculations.

Now tell me, accurately, the average temperature of the ocean. I presume you are not going to use a spot temperature.

Remembering they used to use buckets, which cooled. The used to use engine intakes, which warmed.

Why do you think they use Estimated Sea Level Rise?

Do you think melting ice sheets would tend to cool the oceans?

lee wrote on Feb 13^th, 2018 at 11:40pm:

Unforgiven wrote on Feb 13th, 2018 at 11:30pm: Sea level rise from ocean warming is easy to calculate to a reasonable accuracy. I suggest that even denizen lee could perform those calculations with the help of a high school student. Wow. An article about SLR from 25 years of satellite data and he has fled back to ocean warming calculations. Now tell me, accurately, the average temperature of the ocean. I presume you are not going to use a spot temperature. Remembering they used to use buckets, which cooled. The used to use engine intakes, which warmed. Why do you think they use Estimated Sea Level Rise?

They lacked the computational expertise of denizen lee?

Aussie wrote on Feb 13^th, 2018 at 10:05pm:

Bobby. wrote on Feb 13th, 2018 at 9:58pm: Gordon wrote on Feb 13th, 2018 at 9:56pm: Why show a pic of flooding caused by normal weather? Are you trying to scare everyone Al Gore style? Perhaps Monk is feeding him this stuff? Of course Bobby.  That's a good Mod.  Accuse someone of being the errand boy of someone else who is perfectly capable of posting here if he wants to. 'Atta boy! Apologise to Unforgiven and be forgiven.

Why don't you and your mate piss off back to Relationships and enjoy a little circle jerk?

Make a point, establish an argument and debate. Include references, quotes and other sources to back your claims. Engage with the OP.

Bobby, stamp on these ants before they become established.

Unforgiven wrote on Feb 13^th, 2018 at 11:42pm:

They lacked the computational expertise of denizen lee?

Just leave it at they still lack the computational skill, Too many variables.

Lionel Edriess wrote on Feb 13^th, 2018 at 11:44pm:

Aussie wrote on Feb 13th, 2018 at 10:05pm: Bobby. wrote on Feb 13th, 2018 at 9:58pm: Gordon wrote on Feb 13th, 2018 at 9:56pm: Why show a pic of flooding caused by normal weather? Are you trying to scare everyone Al Gore style? Perhaps Monk is feeding him this stuff? Of course Bobby.  That's a good Mod.  Accuse someone of being the errand boy of someone else who is perfectly capable of posting here if he wants to. 'Atta boy! Apologise to Unforgiven and be forgiven. Why don't you and your mate piss off back to Relationships and enjoy a little circle jerk? Make a point, establish an argument and debate. Include references, quotes and other sources to back your claims. Engage with the OP. Bobby, stamp on these ants before they become established.

Bobby bonehead is the problem not the solution.

Sea ice contribution to sea level rise is accelerating as arctic warms faster than other latitudes.

Denizen lee, please don't thank me for your climate change AGW education.

https://www.carbonbrief.org/why-arent-climate-models-better-at-predicting-arctic-sea-ice-loss


Quote:

Climate models generally do a poor job of capturing how rising temperatures in the Arctic are affecting sea ice. Most underestimate the rapid pace at which sea ice is diminishing. Why is that? Scientists at the massive science conference hosted by the American Geophysical Union (AGU) taking place now in San Francisco have been discussing why it is so difficult to capture what’s happening to Arctic sea ice in climate models, and how we can make the most reliable forecasts possible with the tools available. A policy-making tool Arctic sea ice extent has been declining by about four per cent per decade, with the seasonal low at the end of summer shrinking particularly quickly...

Unforgiven wrote on Feb 14^th, 2018 at 12:47am:

Climate models generally do a poor job of capturing how rising temperatures in the Arctic are affecting sea ice. Most underestimate the rapid pace at which sea ice is diminishing.

Have a look at the graph at -
https://climate.nasa.gov/vital-signs/sea-level/

tell us what you see from early 2015.

So now you have gone from Satellite observations, to warming ocean increase manually calculated, and now Climate Models? ;D ;D ;D ;D ;D ;D

What is the accuracy of the measurements with these satellites ?

Fort Denison in Sydney harbour has been measuring water height for over 100 years it's still within 2 inches of what is was over 100 years ago.

Baronvonrort wrote on Feb 14^th, 2018 at 11:52am:

What is the accuracy of the measurements with these satellites ?

As close as 3.3cm or 33 mm. How they can determine a 3mm change is beyond belief.

Lionel Edriess wrote on Feb 13^th, 2018 at 11:44pm:

Aussie wrote on Feb 13th, 2018 at 10:05pm: Bobby. wrote on Feb 13th, 2018 at 9:58pm: Gordon wrote on Feb 13th, 2018 at 9:56pm: Why show a pic of flooding caused by normal weather? Are you trying to scare everyone Al Gore style? Perhaps Monk is feeding him this stuff? Of course Bobby.  That's a good Mod.  Accuse someone of being the errand boy of someone else who is perfectly capable of posting here if he wants to. 'Atta boy! Apologise to Unforgiven and be forgiven. Why don't you and your mate piss off back to Relationships and enjoy a little circle jerk? Make a point, establish an argument and debate. Include references, quotes and other sources to back your claims. Engage with the OP. Bobby, stamp on these ants before they become established.

Dear Lionel,
I'm watching.
Unforgiven has broken the rules but I'll let him go a bit longer.

or from Colorado Uni Sea Level Research Group -

http://sealevel.colorado.edu/files/2018_rel1/sl_ns_global.png

http://sealevel.colorado.edu/