sea level rise

Sea Level Rise Could Put 2.4 Million US Coastal Homes at Risk

Read time: 3 mins
Sunny day flooding in Miami, Florida

By Olivia Rosane, EcoWatch. Crossposted with permission from EcoWatch.

More than 300,000 U.S. coastal homes could be uninhabitable due to sea level rise by 2045 if no meaningful action is taken to combat climate change, a Union of Concerned Scientists (UCS) study published Monday found.

The study, Underwater: Rising Seas, Chronic Floods and the Implications for U.S. Coastal Real Estate, set out to calculate how many coastal properties in the lower 48 states would suffer from “chronic inundation,” non-storm flooding that occurs 26 times a year or more, under different climate change scenarios.

Yes, Exxon Is Accusing Local Governments of Misleading Investors on Climate Change

Read time: 6 mins
ExxonKnew projections on buildings in San Francisco

In January, ExxonMobil filed a legal petition seeking to depose more than a dozen city and county government officials in California, claiming that the municipal officials are defrauding investors by not fully disclosing the risks posed by climate change.

You read that right. Exxon is legally challenging cities and counties for not talking up the risks of climate change enough to the investors who purchase municipal bonds for those localities. Has Exxon had a change of heart and now become concerned about transparency and the impacts of climate change?

Let's take a closer look.

California City Files Lawsuit Against Chevron, Others For Climate Damages

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Chevron logo on gas truck

The city of Richmond, California is the home of oil giant Chevron’s domestic headquarters. It also happen to be the ninth city in the United States to file a lawsuit against fossil fuel companies for their contributions to global climate change.

The lawsuit filed by the city lists Chevron as the lead defendant, but 28 other oil, gas, and coal companies are listed in the suit as co-defendants. Richmond joins eight other municipalities in the United States in filing similar climate-related charges against fossil fuel companies. All but one of the communities are in the state of California.

Retired General: 'Our Bases and Stations on the Coast Are Going Underwater'

Read time: 6 mins
Tangier Island's coast, with rising waters

This past July, in a Congressional hearing on “The Status and Outlook for U.S. and North American Energy and Resource Security,” retired Marine Brigadier General Stephen A. Cheney offered a dire warning for many current military bases in coastal locations.  

From the tactical side our bases and stations on the coast are going underwater. Norfolk [in Virginia] is the prime example. It’s closed dozens of times a year now because of flooding both from rain and sea level rise,” Cheney explained. “We’re going to have to talk about relocation of our bases and stations that are on the coast.”

Cheney also made it clear that he believes in climate change.

Curbing Climate Change: Why It's so Hard to Act in Time

Read time: 6 mins
Climate change action sign in front of Capitol at March for Science

By Timothy H. Dixon, University of South Florida

This summer I worked on the Greenland ice sheet, part of a scientific experiment to study surface melting and its contribution to Greenland’s accelerating ice losses. By virtue of its size, elevation and currently frozen state, Greenland has the potential to cause large and rapid increases to sea level as it melts.

When I returned, a nonscientist friend asked me what the research showed about future sea level rise. He was disappointed that I couldn’t say anything definite, since it will take several years to analyze the data. This kind of time lag is common in science, but it can make communicating the issues difficult. That’s especially true for climate change, where decades of data collection may be required to see trends.

A recent draft report on climate change by federal scientists exploits data captured over many decades to assess recent changes, and warns of a dire future if we don’t change our ways. Yet few countries are aggressively reducing their emissions in a way scientists say are needed to avoid the dangers of climate change.

While this lack of progress dismays people, it’s actually understandable.

New Hampshire Climate Denier’s Work Has Powerful New Audience: His Brother, the Governor

Read time: 8 mins
Left, Michael Sununu. Right, Chris Sununu

Michael Sununu, a lobbyist, consultant, and businessman from New Hampshire, has for years been voicing doubt about the science behind human-induced climate change. Just last November, for instance, he claimed in an op-ed for a major New Hampshire newspaper that climate scientists “fudge the data for their agenda” as “Mother Nature is still driving climate change.”

With clients in the energy and utility sectors, it would perhaps be easy to dismiss Sununu’s views as interest-based and financially motivated. In the past he even led an energy start-up based on coal. 

But this vocal climate science denier is suddenly in a unique position to influence public policy. His brother, Chris Sununu, now occupies New Hampshire’s highest office — governor. 

PHOTOS: Louisiana’s Oil and Gas Industry Continues Growing Along the Coast It’s Helping Shrink

Read time: 6 mins
Strips of coastal Louisiana land eroding into the sea.

The Louisiana coast loses a football field’s worth of land every 38 minutes. This staggering rate of land loss has been brought on by climate change and coastal erosion accelerated by human activities, including water diversion projects and damage done by the oil and gas industry. 

It is also a problem that is best seen from the sky. Thanks to the nonprofit conservation organization SouthWings, I was able to photograph the state’s troubled coast for DeSmog during a flight on November 15, 2016. 

Sea-level Rise Has Claimed Five Whole Islands in the Pacific: First Scientific Evidence

Read time: 5 mins

By Simon Albert, The University of Queensland; Alistair Grinham, The University of Queensland; Badin Gibbes, The University of Queensland; Javier Leon, University of the Sunshine Coast, and John Church, CSIRO

Sea-level rise, erosion and coastal flooding are some of the greatest challenges facing humanity from climate change.

Recently at least five reef islands in the remote Solomon Islands have been lost completely to sea-level rise and coastal erosion, and a further six islands have been severely eroded.

Glaciers in Canadian Rockies Could Shrink By 95% by 2100, Study Finds

Read time: 5 mins
Athabasca Glacier

This blog originally appeared on Carbon Brief.

The Canadian Rockies, which sit as a backdrop to many a stunning vista, could be almost entirely devoid of glaciers by the end of the century, a new study suggests.

Researchers modelled the impact of rising temperatures on glaciers across western Canada.

The results show widespread ice loss by 2050, and ice all but vanishing a few decades later.

Around 27,000 square kilometers of Western Canada is covered by glaciers, an area similar in size to the amount of ice in the Himalayas or the whole of South America.

Social Cost Of Carbon Drastically Underestimated: Report

Read time: 3 mins

The U.S. government could be drastically underestimating how much climate change is going to cost us, according to a study published by Stanford researchers in the journal Nature Climate Change.

The researchers concluded that the Obama Administration is using a Social Cost of Carbon estimate that may be just one-sixth of the true cost—and that the true cost is high enough to justify aggressive measures for lowering emissions enough to limit global temperature rise to the 2 degrees Celsius that scientists tell us is the threshold for averting catastrophic climate change.

The Social Cost of Carbon is an official estimate of how much economic damage will be caused per metric ton of carbon emitted into our atmosphere—damages like lower crop yields and higher healthcare costs. It is used by the EPA and other federal agencies to calculate the benefits of policies intended to improve energy efficiency, lower emissions, and combat climate change. It is also often used to justify not taking action if the proposed action would cost more than the damage it is intended to mitigate.

The Obama Administration raised its official estimate of the economic cost of a metric ton of CO2 from $21 to $37 in November 2013. Even back then, however, many experts challenged that estimate as far too low.

According to the team at Stanford, that estimate was way too low—they calculate the true Social Cost of Carbon as $220 per metric ton.

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