Tag: greenland

Coastal Real Estate Owners Shouldn’t Take Comfort In New Study That Predicts Greenland Ice Melt Will Raise Sea Level By Nearly a Foot

This past week, major news outlets published articles about a study by geologists from the National Geological Survey of Denmark who said that even if greenhouse gas emissions ceased today, Greenland’s glaciers would melt enough to contribute nearly a foot to average global sea level. In addition, the study published in the journal “Nature Climate Change” said if global warming continues at the current pace, Greenland could add more than two feet to global sea level.

The researchers didn’t give a specific time frame for the sea level rise, but it’s assumed it would occur gradually over the next 100 to 150 years. Their main point is that the amount of greenhouse gases — carbon dioxide and methane currently in the atmosphere — has created a situation where Greenland will release a minimum of nearly a foot of glacial melt into the ocean no matter what we do.

Buyers and owners of real estate located in coastal communities who think a foot of sea level rise isn’t much shouldn’t find comfort in the report. First of all, it’s important to consider that the foot on-average of sea level rise that has accumulated so far due to global warming is already causing costly flooding in many coastal communities, and the number, severity and distribution of these flooding events is growing every year.

Next, it’s important to note that Greenland is only one small piece of the sea level rise puzzle. According to scientists, ice melt in Greenland has only contributed about 20 percent of total sea level rise so far. Ice melt in Antarctica has also caused about 20 percent of the total. While global warming heating up the oceans and causing them to expand has contributed about 50 percent of all sea level rise. The remainder is coming from glaciers melting in mountainous areas and other sources. If all of these sources driving sea level rise also have minimum amounts of sea level rise “baked in” due to the amount of greenhouse gases already accumulated in the atmosphere, the total amount of sea level rise in the years to come will be much higher than the Greenland’s nearly one foot.

Finally, real estate owners in coastal communities under threat of sea level rise flooding have to consider that sea level rise has been accelerating for years, and today’s estimates of total sea level rise will likely be adjusted upwards in the years to come. This is especially true because human society has not been reducing the amount of fossil fuels — coal, oil and natural gas — it has been burning, so overall global warming will continue to increase as will sea level rise.

The bottom line remains: Real estate buyers and owners in coastal communities need to continue to perform due diligence — drawing information from many sources — to calculate their exposure to sea level rise flooding.

The Siberian Town that Broke 100 Degrees & You

On Saturday, June 20, the Siberian town of Verkhoyansk located above the Arctic Circle hit a scorching, all-time record high of 100.4 degrees. What’s that have to do with those of us who live thousands of miles away in the U.S.? As residents of the same planet, a lot.

First, the record is a sure sign that the simple science behind climate change, read global warming, is on the mark. It goes like this: We burn fossil fuels (think oil, gasoline, coal), greenhouse gases — most notably carbon dioxide — accumulate in the atmosphere, the greenhouse gases trap radiation from the sun in the atmosphere, and the atmosphere, ocean and land heat up.

Second, the heating of northern climes isn’t just a matter of extreme summer weather. Under the spell of the sun that never sets this time of year up there, the land surface heats up and permafrost begins to melt. As it melts, methane, a more potent but not as long-lasting greenhouse gas is released into the atmosphere, leading to even more warming. The feedback cycle generates more and more melt and more and more methane release.

We’re not done with second point yet. The heating of the northern climes also leads to the normally damp land drying out, which results in forest fires. The fires pose at least two threats: They release more carbon dioxide into the atmosphere — accelerating global warming — and the soot can settle on snow and ice fields. There, the dark soot absorbs solar radiation which result in faster melting. The water pours into the ocean contributing to sea level rise. Scientists witnessed this dynamic when wildfires in Canada coated Greenland’s ice sheet in soot and melting occurred at a faster rate.

Third, the global warming-driven record high temperatures in Siberia, Alaska, Greenland and other high latitude locations can alter weather patterns. Specifically, they can cause a buildup of high pressure areas that stall the jet stream, which normally keeps weather systems moving from west to east. When they stall, they, too, can heat up. This is contributing to the seemingly never-ending series of monthly high temperature records being set around the globe.

So, what’s all this have to do with you (us)? Record heat above the Arctic Circle is clearly a warning sign that the climate is changing more rapidly than many scientists anticipated. We have pumped more carbon into the atmosphere than has been recorded in millions of years. As a result, there is the very real risk that high temperatures now considered unusual will soon become the norm while extreme high temperatures become, well, more extreme. This cycle could accelerate to the point where, quite frankly, parts of the planet could become inhospitable to human life.

The reality of rapid global warming already poses a threat to millions of people who live in coastal areas. Many of us reside in cities and towns that are already experiencing sea level rise flooding or will likely experience it in the coming years. If the planet warms faster than expected, it’s likely that the rapid melt Greenland experienced due to extremely high temperatures last summer will become the norm. The warming could also cause the Arctic ice sheet, the other major contributor to higher seas, to become further destabilized as floating ice sheets that hold back inland glaciers break off the continent. If enough sea ice vanishes, inland glaciers could become uncorked and rush from land into the sea. The combination of melt in Greenland and a river of Arctic glaciers spilling into the ocean could lead to seas rising much faster than predicted when many locations are already struggling with the foot or so of sea level rise that’s been recorded in the last hundred or so years.

The bottom line for you (us) is global warming is fact. The heating we’re now witnessing and its consequences was anticipated decades ago by the majority of climate scientists. The only real X-factors are how much fossil fuels we’ll burn in the years to come and exactly how fast they’ll warm the atmosphere, ocean and land.

So where does this leave you (us)? Science says the only way to stop the dangerous global warming feedback loop is for humans to burn less fossil fuels. It’s that simple. To achieve this objective, we need to elect leaders who are dedicated to the cause and give our business to companies that help us to trade fossil fuels for environmentally-friendly energy sources.

If we fail to cut back on releasing carbon into the atmosphere, the tiny town in Siberia will prove to be the canary in the coal mine none of the miners listened to.

Antarctica and Greenland Ice Melt Raised Sea Levels a Half Inch In the Last 16 Years — NASA Report

NASA scientists crunched data from satellite missions to determine that ice melt in Antarctica and Greenland over the last 16 years raised sea levels about half an inch. Put another way, the researchers said both locations contributed 5,000 gigatons of water to the oceans which is enough to fill Lake Michigan.

Ice melt and ocean expansion due to global warming are the primary contributors to sea level rise. Experts are concerned that the rate of melting is picking up pace. Helen Fricker, a glaciologist at the University of California-San Diego, told National Public Radio, “How much ice we are going to lose, and how quickly we are going to lose it, is a really key thing that needs to be understood, so that we can plan.”

There are two main forces driving the melting in Antarctica and Greenland. In Antarctica, warming oceans are melting floating ice shelves, which is allowing land based ice to flow into the ocean. In Greenland, warmer atmospheric temperatures are melting ice and creating run-off. At the same time, the warmer air is also causing glacial ice to calve off and fall into the ocean.

If all the ice melted in Greenland alone, scientists estimate global sea levels would rise 23 feet. Fricker told NPR, “There’s a lot of infrastructure and airports and people that live right on the ocean, and these people are going to feel the effects of sea level rise that’s resulted because the ice sheets have melted.”

Greenland’s Ice Sheet Melts at Record Rate in 2019, Scientists Worry the Weather System that Caused it will Double the Rate of Sea Level Rise

Scientists published a study today that concluded that Greenland’s ice sheet melted at a record rate last summer due not just to the heat generated by general global warming but because of a high pressure area that brought lots of sunshine and warmer days to the region.

The researchers analyzed weather data and found that Greenland experienced 63 summer days ruled by the high pressure system, which is double the normal 28 days of high pressure logged between 1981 and 2010. This fueled the loss of 600 billion tons of water, which is estimated to contribute up to .06 inches of sea level rise globally.

The scientists worry that past predictions for the rate of ice sheet loss in Greenland did not take into consideration the impact high pressure areas could have on the rate of melting. If it speeds up, coastal areas with millions of inhabitants and trillions of dollars worth of real estate could be inundated a lot sooner than expected. Marco Tedesco, a researcher at Columbia University who led the study, told Reuters: “We’re destroying ice in decades that was built over thousands of years. What we do here has huge implications for everywhere else in the world.”

Greenland and Antarctica are home to the world’s largest ice sheets. If all the ice in Greenland melted, sea levels would rise by up to 23 feet.

Researchers say the study on high pressure and accelerated ice melt is further evidence that humans need to reduce the burning of fossil fuels to save coastal communities.

NASA: Greenland and Antarctica Ice Melt Speeding Up Sea Level Rise

NASA reported this week that Greenland and Antarctica ice sheets are melting six times faster than they did in the 1990s, a development that could have a severe impact on coastal real estate.

NASA scientists published their statement on the Jet Propulsion Laboratory website in response to a study by the Intergovernmental Panel on Climate Change that showed Greenland and Antarctica combined lost 6.4 trillion tons of ice in three decades. “Unabated, this rate of melting could cause flooding that affects hundreds of millions of people by 2100,” according to NASA.

Researchers used observations from 11 satellite’s that monitor Greenland and Antarctica ice loss to arrive at their disturbing conclusion. They calculate that the meltwater has raised global sea level by .7 inches. This doesn’t sound like much, but it can have a significant effect on coastal populations. “Every centimeter of sea level rise leads to coastal flooding and coastal erosion, disrupting people’s lives around the planet,” said Prof. Andrew Shepherd, a scientist at the University of Leeds.

Ice melt isn’t the only factor fueling sea level rise. Ocean heating and expansion and the melting of smaller land-based glaciers also contribute to higher seas.

Coastal Real Estate in Greater Peril as Antarctic and Greenland Ice-Melt Follows Worst Case Scenario

One of the major questions for coastal governments and real estate owners is: How fast will sea level rise flooding advance? According to the latest analysis by the United Nation’s Intragovernmental Panel on Climate Change (IPCC), the answer is: Likely a lot sooner than we’d hoped.

IPCC scientists analyzed data from Antarctica and Greenland and determined that land-based ice and snow are melting six times faster than they did in the 1990s. This is in line with the group’s worst-case scenario.

At this pace of melting, IPCC experts estimate the oceans will rise nearly 7 extra inches over the 21 inches (1.75 feet) they’ve set as their mid-range global sea level rise prediction for the end of the century. That’s a total of 2 1/4 feet of sea level rise.

Andrew Shepherd, a professor of Earth Observations at the University of Leeds, told the Guardian newspaper that if sea levels rise as predicted in the latest estimate, 400 million people will be impacted by coastal flooding; that’s up from 360 million people earlier predicted. “These are not unlikely events with small impacts,” he told the paper. “They are already under way and will be devastating for coastal communities.”

Land-based ice and snow melting in Greenland and Antarctic contribute about a third of the global sea level rise total. The rest comes from expansion of the oceans as they warm and runoff from smaller glaciers.

Greenland and Antarctica seem like a long way away, but their meltwaters could ultimately decide the fate of billions of dollars worth of coastal real estate. To make informed decisions, property owners in at-risk areas need to keep up to date on the pace of ice and snow melt and the stability of their glaciers.

%d bloggers like this: