A Study Of "fossil Beaches", Those Areas Where Geology And Fossils Show They Were Once Pre-historic Coasts,

A Study Of "fossil Beaches", Those Areas Where Geology And Fossils Show They Were Once Pre-historic Coasts,

A study of "fossil beaches", those areas where geology and fossils show they were once pre-historic coasts, is aiming to give us a better picture of the threat of sea level rise. Researchers acknowledge that, even during natural climatic shifts, carbon dioxide is the primary driver of global warming and cooling. During the Pliocene, carbon dioxide was at 400ppm and sea level was much higher. We are currently at 393ppm and rising. We are likely to cross over 400ppm in the next several years. Thus, looking at sea level rise during the Pliocene can give us a picture of what sea levels may look like as a result of current global warming. This map shows where the coastline was in the U.S. during the Pliocene.

More Posts from Envirographs and Others

7 years ago
From Vox:

From Vox:

“In recent years, China, the world’s largest emitter of carbon dioxide, has been making major efforts to restrain its coal use and shift to cleaner sources of energy. When Donald Trump and other conservatives in the United States complain that China isn’t doing anything about climate change, they simply haven’t been paying attention...

Since 2013, China’s coal consumption has actually fallen — due in part to a major economic slowdown but also in part to sluggish output in heavy industries like steel and cement that have traditionally accounted for half the country’s coal use... On top of that, as China’s leaders start to take global warming seriously, the country has been making massive investments in clean energy. As part of the Paris climate deal, China has pledged to get 20 percent of its energy from low-carbon sources by 2030. The government is planning to install an addition 130 gigawatts of wind and solar by 2020 and making big bets on nuclear power.”


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7 years ago
The Eclipse Fingerprint On Solar Panels In Missoula, MT.

The eclipse fingerprint on solar panels in Missoula, MT.

Source: https://twitter.com/mfrank406/status/899986864303611905

13 years ago
While The Coal Industry Is Fighting Clean Water Act Protections For Rivers And Streams From Mountaintop

While the coal industry is fighting Clean Water Act protections for rivers and streams from mountaintop removal mining (MTR), this 2011 poll of residents in Kentucky, Virginia, West Virginia and Tennessee found strong support.

Other interesting results:

57% of voters oppose MTR; 20% support

64% of Democrats, 60% of independents and 51% of Republicans oppose MTR


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7 years ago
Red Areas In This Map Represent Large Projected Increases In The Frequency Of Floods Following 10 Centimeters

Red areas in this map represent large projected increases in the frequency of floods following 10 centimeters (four inches) of additional sea-level rise.

According to a study, stark increases in instances of flooding are projected for Pacific islands, parts of Southeast Asia, and coastlines along India, Africa, and South America in the years and decades ahead — before spreading to engulf nearly the entire tropical region.

Unlike vulnerable cities and towns along the East Coast of the U.S., where frequent storms and big waves lead to large variations in day-to-day water levels, tropical coastlines tend to be surrounded by waters with depths that vary less. That means many tropical coastlines were not built to withstand the kinds of routine flooding that will be caused by rising seas.

- Upton, J. (2017, May18). Rising seas are lapping at the shores of the world’s poorest countries. Grist. 


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12 years ago
Predicted Land Change Along The Louisiana Coast Over The Next 50 Years If We Do Nothing More Than We

Predicted land change along the Louisiana coast over the next 50 years if we do nothing more than we have done to date. Red indicates areas likely to be lost, and green indicates areas of new land. This map is based on assumptions about increases in sea level rise, subsidence, and other factors.

The global rise in mean sea level is complicated in the Mississippi River Delta region by subsidence (sinking land). The Gulf of Mexico has one of the highest rates of subsidence in the nation due to sediment compaction and the extraction of groundwater, oil and natural gas. Restoration of the deltaic system can help stabilize shorelines and reduce the associated risks with rising sea levels. Deltas are formed by the constant inflow of sediment from rivers. However, the Mississippi River Delta has been cut off from this natural process through the construction of extensive levee systems for navigation and flood protection. Through planned sediment diversions, the natural deltaic process can be restored and help increase the resiliency of coastal areas.


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7 years ago
A Somewhat Pessimistic View Of Climate Diplomacy By Eduardo Porter in The New York Times: In The 30

A somewhat pessimistic view of climate diplomacy by Eduardo Porter in the New York Times: In the 30 years since the first international meeting on climate change in 1988 in Toronto, temperatures continue to rise and greenhouse gas emissions are greater than ever. 

Original article


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13 years ago
Wetlands Losses And Gains For Different Land Use Categories. While, Historically, Agriculture Was Responsible

Wetlands losses and gains for different land use categories. While, historically, agriculture was responsible for the vast majority of wetlands losses, government incentive programs like the Wetlands Reserve Program have encouraged farmers to restore former wetlands on their lands, contributing to a net gain of wetlands from the agriculture sector 2004-2009. In contrast, silviculture (forestry) is contributing heavily to wetlands losses, with urban and rural development also destroying wetlands. Urban and rural development combined accounted for 23 percent of the wetland losses 2004-2009, while silviculture accounted for 56% (a decrease from 1998-2004 for urban and rural development and an increase for silviculture).

*"Other" included areas such as native prairie, un-managed forests, scrub lands, barren and abandoned land, lands enrolled in conservation easements or other lands designated as wildlife management areas. Conservation programs are largely responsible for high wetlands gains from these areas.


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10 years ago
While The Average Household Today Consists Of Fewer People Than 60 Years Ago (2.55 People Vs. 3.37 People),
While The Average Household Today Consists Of Fewer People Than 60 Years Ago (2.55 People Vs. 3.37 People),

While the average household today consists of fewer people than 60 years ago (2.55 people vs. 3.37 people), the average house size has increased by over 150%. Bigger houses (despite smaller families) means more energy used to heat and cool, more land cleared to build, and more materials required for construction.


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7 years ago
Climate Change Is Hitting Georgia’s Peach Industry, Where An Unusually Warm Winter This Year Let To
Climate Change Is Hitting Georgia’s Peach Industry, Where An Unusually Warm Winter This Year Let To
Climate Change Is Hitting Georgia’s Peach Industry, Where An Unusually Warm Winter This Year Let To

Climate change is hitting Georgia’s peach industry, where an unusually warm winter this year let to a dramatically reduced peach harvest.

From FiveThirtyEight:

For trees that fruit each year (such as peaches, cherries, blueberries, almonds and other fruits and nuts), cool weather is as important as warm. Cold air and less sunlight trigger the release of chemicals that halt trees’ growth, prepare them to withstand freezing temperatures and enable them to resume growing the following spring. When a tree enters this dormant state, it sets a kind of internal seasonal alarm clock that goes off once the tree has spent enough time in chilly temperatures. This countdown is measured in so-called chill hours — the amount of time the temperature is between 32 and 45 degrees Fahrenheit. When crops don’t get the chill hours they expect, they can’t properly reset. Buds are delayed, and instead of ripening into juicy, delicious fruit, they remain small and underdeveloped.

This last winter, middle Georgia got about 400 chill hours during what Chavez described as the usual dormancy period for peaches (roughly Oct. 1 to Feb. 10). The winter before, while still on the low side, had closer to 600 chill hours. But that 200-hour difference meant several peach varieties that had produced fruit in 2016 never bloomed this year.

As shown in the last image, this reduction in chill hours is not unique to Georgia, and will impact farmers growing fruit and nut trees.


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