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New Type of SLC Detection Model - 11

I am adding a feature that contrasts sea level change (SLC) volatility in relatively close areas.

The four examples today show Yakutat (Fig. 1) which is near Glacier Bay, Alaska, and San Francisco (Fig. 2), both on the west coast of the U.S.eh?, and both covered in previous posts (Proof of Concept - 3).

These four quickie graphs I did show the contrast of global mean sea level (GMSL) and global mean surface temperatures (GMST) with real local historical sea levels.

The use of GMSL and GMST, as these graphs show, does little to inform the public of the radical volatility of  sea level in local areas.

I mean that in the sense that a local area is real, it floods, and it becomes damaged by SLC (The King of King Tides Approaches).

The global mean average is a mathematical tool, but is not a proper way of informing the public because it covers up reality whether intended or not.

Anyway, when one asks the question "why is a town on the west coast experiencing
serious sea level fall (SLF) while the other is experiencing serious sea level rise" (SLR)?

Journalists near one of those locations seem to have no clue as to why serious sea level volatility is taking place, reporting the issue as if it is the new normal, or as if the land has risen 4 ft. recently instead of taking thousands or millions of years (Alaska Dispatch News).

I guess the unknown is the new global mean normal, as cities even closer together than San Francisco and Yakutat (Juneau and Prince Rupert - 400 miles) tell the same tide gauge station story (see Fig. 3 and Fig. 4; cf. The Gravity of Sea Level Change).

The next post in this series is here, the previous post in this series is here.
Ballad of a Thin Man, by Bob Dylan (lyrics here):

Posted by Dredd at 4:35 PM 3 comments: 


In The Wave Strike - 2 ‘In The Wave-Strike Over Unquiet Stones’

Pablo Neruda

Dire Straits, Sultans of Swing (quite a jam session)

Posted by Dredd at 4:30 PM 2 comments: 


The King of King Tides Approaches


Some areas are talking about "king tides" this week ("King Tides Take Over Coastal Towns Just in Time for Thanksgiving", Weather Channel).

Any subject that deals with activities on coastlines around the world is not complete in the Anthropocene Epoch without some discussion of sea level rise (SLR), as one way of envisioning the near future in real time:

To avoid confusion, it’s important to know that king tides aren’t part of climate change; they are a natural part of tidal cycles but they do give us a sneak preview of what higher sea levels could look like. The actual height reached by a king tide will depend on the local weather and ocean conditions on the day.

It is possible that by 2060 to 2070 [an underestimate IMO - Dredd] we could experience tides of the magnitude of king tide events every month due to sea level rise induced by climate change.

This project aims to promote awareness of the impacts of sea level rise, and help to visualize coastal areas that are vulnerable to tidal inundation which can be monitored over time.

(King Tides Project). The subject matter today concerns why SLR is turning regular king tides into more serious flooding events (Fig. 1).

Note especially, though, that the addition of SLR causes flooding at different rates in different areas.

But before we launch into that aspect of the subject, let's refresh our memory about the natural aspect of king tides:

When a new moon or full moon align with Earth and the sun, the gravitational pull on Earth's oceans causes strange things [to] happen. Water creeps up
along the shore and even into coastal towns – some of the highest tides of the year.

"The king tides arise from a combination of two factors. First, this is the time of year, known as perigee, when the moon is closest to Earth, exhibiting the strongest gravitational pull," weather.com meteorologist Jonathan Erdman says. "Secondly, around the full and new moon each month, the Earth, moon and sun are roughly aligned, and that increases the gravitational tug on the tides. Then, if either a storm is approaching or simply onshore winds are persisting, water will pile up along the shore, leading to further water rise."

(Weather Channel). That is one "type" of gravity which impacts upon sea level and tides, but there are other types of gravity that do so even more (The Gravity of Sea Level Change).

There is only one factor that causes glacial ice and ice sheets to have a more dramatic gravitational impact on sea level than the Sun and Moon have.

That factor is distance (Fig. 2).

When communities are close to large glacier fields, or close to ice sheets, then as those icy areas melt, the gravity decreases in Newton proportion to the loss of ice mass (Proof of Concept - 3).

Media operatives continue to "soften" the reality of the SLR danger that civilization is facing, and will continue to face, whether it wants to face it or not.

Focusing on a "flood" event, using "king tide" to describe that event, is dishonest when we know that the area did not flood at king tides of the past (Bay Area may see flooding this week thanks to strong king tides, This week’s king tides bring danger of flooding, glimpse of future).

The honest reporter will say "king tides did not flood this area in times past, but this area is experiencing SLR now, which is causing the flooding in our time that did not happen in earlier times."

I have discussed the constitutional right to lie (It Takes A Culture To Raise A Compulsive Liar).

But, that right vanishes when it causes harm, and when it causes fraud (Agnotology: The Surge - 18).

The "Hundred Years War" now under way (Watch The Ice Shelves) is not composed of king tide armies, rather, it is composed of the impact that our fossil fuel use has caused.

I am talking about global warming induced SLR (Greenland & Antarctica Invade The United States, 2, 3, 4; The Extinction of Chesapeake Bay Islands, The Extinction of Houston, The Extinction of Providence).

The king tide is hitting the "bay area" of San Francisco this week, so I added two graphs which show actual tide gauge station historical sea level change (SLC) data, as well as the actual historical pattern of global mean sea level (GMSL) and global mean surface temperature (GMST) data (Fig. 4).

There is little doubt that local sea level there is on the rise, with GMSL and GMST generally on the rise elsewhere.

Thus, the king tides of today are higher than those of our grandfathers.

What about the king tides of the future?

Check out Fig. 5 for some ideas.
We can all contribute data or start a chapter:

Posted by Dredd at 9:33 AM 1 comment: Labels: deceit, science


Watch The Ice Shelves

I. Background

This year I have focused on ice shelves in several posts.

Some of those Dredd Blog posts discussed a controversy concerning the impact of sea level fall (SLF) on ice shelves when that SLF is caused by one particular type of action, which is ice sheet mass / gravity loss.

Ice sheet mass / gravity loss is known to cause an ongoing decrease in sea level, at
and near the coast of the land mass upon which that ice sheet rests.

That would, at the same time, be a cause of ongoing decrease in the sea level upon which the ice shelf floats, thus, the argument arises that SLF, combined with daily tidal ebb and flow, puts inordinate amounts of upward then downward pressure on ice shelves attached to the ice sheets.

Which inexorably leads to the eventual demise of the ice shelf (e.g. Peak Sea Level - 3, Peak Sea Level - 5).

We have the example of an actual and quite recent ice shelf collapse, the Zachariae Isstrom, in N.E. Greenland where SLF is an ongoing phenomenon as it is in other such areas (Peak Sea Level - 6), Proof of Concept - 3, 5).

As Dr. Eric Rignot explained, as goes the ice shelf so goes the ice stream flow in the ice sheet (which that ice shelf is holding back or slowing down).

II. An Interesting Source of Egress & Ingress

Regular Dredd Blog reader, Tom, came upon an interesting video (first video below)
which depicts dynamic sub-surface processes that carry away massive quantities of colder, dense water from the coastal areas of the continent of Antarctica.

That fluid dynamic is similar to others that carry warmer water under the ice shelves --all of which are contributing to the thinning of the ice shelves (second video below), and thereby helping to speed up of the flow of the hundreds or thousands of ice streams in Antarctica and Greenland ice sheets.

III. The Local and Global Pictures Give The Same Narrative

Once again, I have prepared some graphs to show how important it is to keep in mind the difference between local sea level rise (SLR) and global SLR.

The same holds true for SLF.

For example, there is no global SLF, as generated by ice sheet gravity loss, but there is the mathematical concept of global SLR.

If you will take note of Fig. 1, the issue may become more clear.

On that graph, generated by Dredd Blog software modules, the actual history of sea level at Wilmington is depicted in terms of RLR sea level at tide gauge stations around the globe (see PSMSL).

The herky jerky line on the graph is the actual sea level history at that local tide gauge
station, while the smoother lines are the actual patterns of  global mean sea levels and global mean surface temperatures.

They are fused into one graph by the software which identifies and collects their patterns, then conforms those collected patterns into the graph space, so that the non-local patterns can be viewed realistically, along with the actual local SLR patterns of both the IPCC (2013) future expectations, as well as the Hansen (2015) expectations.

You can then easily see that Wilmington is above the global mean sea level (GMSL) as well as the pattern of global mean surface temperature (GMST), etc.

In Fig. 6 you can see how those patterns look when normalized with IPCC 5th Assessment (2013) and Hansen (2015) projections.

The local sea level is shown, along with both global mean sea level and global mean surface temperature as needed, to depict relevant historical and future relationship patterns.

IV. Conclusion

As fall and winter now comes to Greenland, spring and summer are coming to Antarctica.

The demise of the ice shelves and ice sheets will proceed.

Local sea levels will continue to rise, the scientists will continue to calculate the mathematical global mean sea level rise, warming at the poles will continue to increase at a rate much higher that at the middle portions of the globe.

The counter-invasion of current civilization is well under way (Greenland & Antarctica Invade The United States, 2, 3, 4, The 1% May Face The Wrath of Sea Level Rise First, Why The Military Can't Defend Against The Invasion, Weekend Rebel Science Excursion - 44).

That invasion will give new meaning to "The Hundred Years War."

The next post in this series is here.

A discussion about ice shelves vs. ice sheets:

Posted by Dredd at 12:51 PM 1 comment: 


WW III Blues 

Posted by Dredd at 3:55 PM 2 comments: 


The Evolution of Models - 17

They keep GMSL records going back to 1880.

They keep GMST records going back to 1880.

Something has to give.

Posted by Dredd at 4:56 PM 2 comments: (c) Copyright

--the nature of the copyrighted work;