US coasts sea level rise 10 to 12 inches by 2050

[jackdale]

Survey shows Metro Vancouver among 36 global cities to be 'underwater first'

To rank the cities, San Francisco-based insurance researcher Matthew Nash assumed a sea level rise of 1.5 metres by century’s end using Climate Central’s Coastal Risk Screening Tool. (A recent U.S. government technical report on sea-level rise estimated water levels could climb by up to 2.1 metres by 2100, much higher than previously expected.)

https://www.alaskahighwaynews.ca/hig...-first-5091214

[jackdale]

Originally Posted by scottmc59

global warming (which is now called climate change due to a lack of warming)

You can thank the GOP for for the rebranding.

We have spent the last seven years examining how best to communicate complicated ideas and controversial subjects. The terminology in the upcoming environmental debate needs refinement, starting with “global warming” and ending with “environmentalism.” It’s time for us to start talking about “climate change” instead of global warming and “conservation” instead of preservation.
1. “Climate change” is less frightening than “global warming.” As one focus group participant noted, climate change “sounds like you’re going from Pittsburgh to Fort Lauderdale.” While global warming has catastrophic connotations attached to it, climate change suggests a more controllable and less emotional challenge.

[ARCHIVE] 2002 Memorandum to Bush White House, by GOP Consultant Frank Luntz (17p) | Aviation Impact Reform

Luntz has since done a mea culpa.

https://www.politico.com/story/2019/...change-1470653

[SIGMACHI]

Phooey!

[jackdale]

Originally Posted by SIGMACHI

Phooey!

Sea level rise in your part of the world exceeds the global mean of 3.4 mm per annum.

[Montanan]

Originally Posted by jackdale

Sea level rise in your part of the world exceeds the global mean of 3.4 mm per annum.

Thanks Jack for sharing those "inconvenient facts", especially helpful when displayed in simple illustrations.

The sea is rising.

[Montanan]

MARYLAND SEA-LEVEL RISE PROJECTIONS REVEAL POTENTIAL IMPACT OF INACTION ON WARMING CLIMATE
December 14, 2018

Maryland, with 3,100 miles of tidal shoreline from the Chesapeake Bay and its tributaries to the Atlantic Ocean and coastal bays, is highly vulnerable to sea-level rise. The level of Chesapeake Bay water with respect to the land is now rising about three times as fast as it was during Colonial times, threatening more densely built communities and infrastructure.

Acceleration of sea-level rise—resulting from expansion of the ocean due to its warming, melting of glaciers and polar ice sheets, and dynamic ocean variability—is impacting coastal sea level and exacerbating tidal flooding of low-lying areas. The effects are already apparent, including shoreline erosion, deterioration of tidal wetlands, and saline contamination of low-lying farm fields. “Nuisance” tidal flooding (also referred to as high tide flooding) that occurred just a very few days per year in Annapolis in the 1950s now occurs 40 or more days per year. Storm surges from tropical storms or Nor’easters also spread farther and higher, riding on the higher sea level.

Scientific understanding indicates that the rate of sea-level rise will continue to accelerate into the foreseeable future. Reliable projections of sea level along Maryland's coasts are critical for planning the state's future and insuring its resilience in the face of changes ahead.

https://www.umces.edu/news/maryland-...m%20fields.%20

[jackdale]

Originally Posted by SIGMACHI

Phooey!

A more comprehensive look at sea level rise in your vicinity.

https://www.vims.edu/research/produc...bamd/index.php

[jackdale]

Just out: failed forecasts by skeptics - with an emphasis on NC and FL.

https://tamino.wordpress.com/2022/02...-level-denial/

[donradcliffe]

I figured out where all that water is coming from. Not only is the sea level dropping in Alaska, its accelerating!

[jackdale]

Originally Posted by donradcliffe

I figured out where all that water is coming from. Not only is the sea level dropping in Alaska, its accelerating!

Isostatic rebound which is the result of glacial retreat. Yes, that is the source of some of the water.

https://www.vims.edu/research/produc...ybak/index.php

[ShoreFun]

https://www.europarl.europa.eu/cmsda...y%20Supran.pdf

[jackdale]

Originally Posted by ShoreFun

https://www.europarl.europa.eu/cmsda...y%20Supran.pdf

Wow. That is a great history.

[Montanan]

As the sea-level rises along coastlines low lying regions become more prone to sea water floodings and by lateral seawater intrusion, causing freshwater aquifers to become contaminated with salt water. Saltwater intrusion is largely irreversible and once an aquifer is contaminated it is no longer suitable for use for domestic potable water purposes or agricultural irrigation purposes

What rising sea levels mean for agriculture in South Florida |
Opinion Column, Tampa Bay Times Published Feb. 21

Florida is surrounded by water, so projections that sea levels will rise up to one foot — and even more in some areas, including Tampa Bay — by 2050 are bad news. This estimate comes from a new report issued by the National Oceanic and Atmospheric Administration, which gives a “what’s coming” look at tide, wind and storm-driven extreme water levels that will likely drive future coastal flood risk. Moderate flooding is expected to occur more than 10 times as often as it does now, according to NOAA.

. . .

Florida currently produces more than 300 different commodities, from tomatoes to strawberries, which generated roughly $7.4 billion in cash receipts in 2020. Agriculture in Florida, and particularly in South Florida, is a significant contributor to the state’s economic vitality.


Many areas of the South Dade Agricultural area, which as of 2017 had nearly 71,000 acres being farmed, have an elevation of less than 3 feet above sea level.

Even a slight increase in saltwater intrusion into Florida’s aquifers could have major repercussions in availability of fresh water for drinking and agricultural purposes. Consider that in South Florida, 90 percent of drinking water comes from underground aquifers. At the same time, agriculture depends heavily on groundwater.

[Montanan]

Greenland's ice is melting from bottom up and faster than thought, study shows

Rapid basal melting of the Greenland Ice Sheet from surface meltwater drainage

https://www.pnas.org/content/119/10/e2116036119


Proccedings of the National Academy of Sciences of the United States of America PNAS

March 8, 2022

"Our observations show that the effect of viscous dissipation from surface meltwater input is by far the largest heat source beneath the Greenland Ice Sheet."

As the meltwater falls, its gravitational potential energy is converted to kinetic energy, which ultimately warms the water as it pools at the base of the ice sheet. In that process, the study found that the Greenland ice sheet produces more energy than the world's 10 largest hydroelectric dams combined.

"However, the heat generated by the falling water is not used to generate electricity. Instead, it melts the ice," During warmer months, meltwater pools into lakes and streams on the surface of the ice sheet. Some of that water drains to the bottom of the ice sheet, falling through cracks and large fractures that form in the ice with movement and stress. That meltwater contributes to more melting at the bottom of the ice sheet, and it also behaves as a lubricant that promotes faster flow and increases the quantity of ice discharged into the ocean.

Christoffersen explained that when researching the melting of ice sheet and glaciers at their bases, studies tended to focus on external heat sources.
"But what we hadn't really looked at was the heat generated by the draining meltwater itself," he said. "There's a lot of energy stored in the water that forms on the surface, and when it falls, the energy has to go somewhere."

[newhaul]

Originally Posted by Montanan

An interagency report, led by the National Oceanic and Atmospheric Administration, shows how scientists are increasingly confident that US coasts will see another 10 to 12 inches of sea level rise by 2050.

2022 Sea Level Rise Technical Report
Updated projections available through 2150 for all U.S. coastal waters.
https://oceanservice.noaa.gov/hazard...ch-report.html

The implications of that forecast are enormous.

Sea level will rise as much in the next 30 years as it did in the past 100 -- increasing the frequency of high-tide flooding, pushing storm surge to the extreme and inundating vulnerable coastal infrastructure with saltwater.

. . .

if global warming can be held to around 2 degrees above pre-industrial levels, NOAA estimates sea level rise in the US could be limited to 2 feet by the end of the century.
If temperatures are allowed to skyrocket, that forecast increases to 7 feet.

https://www.cnn.com/2022/02/15/us/us...ate/index.html

This prediction like all those that came before have all failed to materialize .
The models are eronious gogo. ( garbage in garbage out)