Tag: CO2 emissions

Global CO2 emissions flat for 3d year in a row

U.S. emissions at 1992 level, according to IEA report

The Craig Station power plant in northwest Colorado pollutes lakes in Rocky Mountain National Park. @bberwyn photo.

Staff Report

Carbon dioxide emissions from the world’s biggest economies — the U.S. and China — dropped in 2016 and didn’t grow in Europe, showing that economic growth can occur without an increase in heat-trapping pollution, according to the latest emissions report from the International Energy Agency.

Despite the slowdown in emissions from the power sector, CO2 levels are still climbing at a record rate, though, according to scientists who recently released a report showing that concentrations of the heat-trapping greenhouse gas increased 3 parts per million for the second year in a row. The concentration is now above 400 ppm, more than 43 percent more than pre-industrial levels. Continue reading “Global CO2 emissions flat for 3d year in a row”

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Climate: Will CO2 emissions drop in 2015?

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More signs that global CO2 emissions may be leveling off.

Energy shift pays off

Staff Report

There may be hope for the Earth’s climate after all.

A new report from the Global Carbon Project suggests annual global carbon dioxide emissions from fossil fuels could drop slightly in 2015, contrasting with the rapid growth in emissions before 2014. The findings emphasize the need for action to stabilize and permanently lower global CO2 emissions, the researchers concluded. Continue reading “Climate: Will CO2 emissions drop in 2015?”

Earth’s plants may be swamped by rising CO2

Autumn light in the Aistal, near Linz, Austria.
Plants on Earth may not be able to keep up with the rising tide of greenhouse gas emissions. @bberwyn photo.

Climate models may need revision based on new findings

Staff Report

Terrestrial plant growth may not be responding to increased atmospheric CO2 in the way many scientists expected, a new study by the Institute on the Environment says.

Many climate models projected plant growth would increase, thereby offsetting at least part of human CO2 emissions. But the new research, based in large part on satellite data, concluded that current model estimates of plants’ ability to offset growing greenhouse gas emissions may be unrealistically optimistic.

The findings were published in Nature Climate Change. Global plant growth has indeed increased over the past 30 years, but not as much as expected given the change in atmospheric CO2 concentrations. Continue reading “Earth’s plants may be swamped by rising CO2”

Travel industry backs strong Paris climate deal

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The cruise ship industry aims to cut CO2 emissions by 30 percent in the next 15 years. @bberwyn photo.

Airline industry committed to cutting CO2 emissions 50 percent by 2050

By Bob Berwyn

World travel leaders say they’re on board with efforts to finalize a meaningful global climate agreement at the ongoing COP21 talks in Paris.

Highlighting the economic opportunities that the travel industry creates, several major international organizations reiterated the industry’s commitment to contribute to fight climate change. Continue reading “Travel industry backs strong Paris climate deal”

Are global CO2 emissions leveling off?

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When will global CO2 emissions peak?

EU achieves big cuts; U.S. still largest per capita emitter

Staff Report

Global CO2 emissions slowed dramatically the past few years, potentially signalling the wane of the fossil fuel era, according to a new report from the European Commission’s Joint Research Centre.

The carbon tally shows that after a decade when CO2 emissions grew at about 4 percent annually, the pace slowed significantly in 2012 (0.8 percent), 2013 (1.5 percent). Continue reading “Are global CO2 emissions leveling off?”

Study: Doubling of CO2 may warm Earth by 3 degrees Celsius

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New data shows climate may be more sensitive to CO2 than previously thought.

New chemical analysis sends climate warming signal

Staff Report

A study of ancient carbonate crystals in Colorado suggests that the Earth’s climate is more sensitive to changes in atmospheric carbon dioxide than believed.

Based on the chemical analysis of rocks from the Green River formation, scientists think that a doubling of CO2 from pre-industrial times could raise the global temperature by a whopping 3 degrees Celsius. Continue reading “Study: Doubling of CO2 may warm Earth by 3 degrees Celsius”

Climate: Ocean acidification will have huge costs

Coral reef erosion is likely to outpace reef building this century

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The acidity of the world’s oceans could increase by 170 percent by the end of the century, as greenhouse gas emissions continue nearly unabated. bberwyn photo.

By Summit Voice

FRISCO — The legacy of historical fossil fuel emissions on ocean acidification will be felt for centuries, an international team of scientists concluded in a new report, warning that the world needs to prepare for major losses of ecosystem services.

If carbon dioxide emissions continue on their current trajectory, the acidity of the world’s oceans may increase by around 170 percent by the end of the century, the report found. People who rely on the ocean’s ecosystem services — often in developing countries — are especially vulnerable.

“What we can now say with high levels of confidence about ocean acidification sends a clear message,” said Ulf Riebesell, of the GEOMAR Helmholtz Centre for Ocean Research in Kiel, Germany. “Globally we have to be prepared for significant economic and ecosystem service losses. But we also know that reducing the rate of carbon dioxide emissions will slow acidification. That has to be the major message for the COP19 meeting.” Continue reading “Climate: Ocean acidification will have huge costs”