Current coal phase-out pledges are insufficient to hit Paris climate goal

Impact of the Powering Past Coal Alliance (PPCA) pledges. To keep global warming within 1.5 °C of pre-industrial levels, there needs to be a substantial decline in the use of coal power by 2030 and in most scenarios, complete cessation by 2050. Graphic: Jewell, et al., 2019 / Nature Climate Change

July 20, 2019

Current coal phase-out pledges are insufficient to hit Paris climate goal

27 June 2019 (Chalmers University of Technology) – The Powering Past Coal Alliance, or PPCA, is a coalition of 30 countries and 22 cities and states that aims to phase out unabated coal power. But analysis led by Chalmers University of Technology, Sweden, published in Nature Climate Change, shows that members mainly pledge to close […]

Schematic of factors contributing to the quantification of a remaining carbon budget. Graphic: Rogelj, et al., 2019 / Nature

July 20, 2019

Humanity’s climate “carbon budget” dwindling fast – At current CO2 emission rates the budget will be exhausted in less than 14 years – “The trillion-dollar question is how much of a carbon budget do we have left?”

17 July 2019 (AFP) – The concept of a carbon budget is dead simple: figure out how much CO2 humanity can pump into the atmosphere without pushing Earth’s surface temperature beyond a dangerous threshold. [cf. What Counts for Our Climate: Carbon Budgets Untangled and Budgeting for our future climate. –Des] The 2015 Paris climate treaty […]

Committed CO2 emissions from existing and proposed energy infrastructure. Estimates of future CO2 emissions by industry sector and country/region Emissions from existing infrastructure are shown by darker shading, and emissions from proposed power plants (i.e. electricity) are more lightly shaded. Graphic: Tong, et al., 2019 / Nature

July 18, 2019

“Committed” CO2 emissions jeopardize international climate goals – Existing, planned fossil fuel-burning infrastructure must be retired early, replaced – “Without such radical changes, we fear the aspirations of the Paris agreement are already at risk”

IRVINE, California, 1 July 2019 (UCI News) – The nations that have signed agreements to stabilize the global mean temperature by 2050 will fail to meet their goals unless existing fossil fuel-burning infrastructure around the world is retired early, according to a study [pdf] – published today in Nature – by researchers at the University […]

World map showing risk assessment of future changes in potential tree cover. (A) Illustration of expected losses in potential tree cover by 2050, under the “business as usual” climate change scenario (RCP 8.5), from the average of three Earth system models commonly used in ecology (cesm1cam5, cesm1bgc, and mohchadgem2es). (B) Quantitative numbers of potential gain and loss are illustrated by bins of 5° along a latitudinal gradient. Graphic: Bastin, et al., 2019 / Science

July 16, 2019

Expert reaction to study looking at trees, carbon storage, and climate change – “It is time to stop suggesting there is a ‘nature-based solution’ to ongoing fossil fuel use. There isn’t. Sorry.”

4 July 2019 (Science Media Centre) – A new study, published in Science, reports on the capacity for trees to reduce atmospheric carbon levels. Dr James Borrell, Researcher at the Royal Botanic Gardens, Kew, said: “Global forest restoration clearly has remarkable potential to address climate change, but restoring forest on this scale is a significant […]

Energy consumption and income inequality in the Philippines, 1990-2015. Data: McGee and Greiner, 2019 / Energy Research and Social Science. Graphic: James P. Galasyn

July 14, 2019

Shifts to renewable energy can drive up energy poverty, study finds – “We don’t think of energy as a human right when it actually is”

By Cristina Rojas 12 July 2019 (PSU) – Efforts to shift away from fossil fuels and replace oil and coal with renewable energy sources can help reduce carbon emissions but do so at the expense of increased inequality, according to a new Portland State University study. [Data available here: Renewable energy injustice McGee and Greiner […]

Free air CO2 enrichment experiments using native Australian forests. Elevated CO2 levels are used to examine the effects on native forests, animals, soils and grasses. Photo: Western Sydney University

June 24, 2019

Leaving microbes out of climate change conversation has major consequences, experts warn – “Climate change is literally starving ocean life”

By Ivy Shih 19 June 2019 (UNSW) – An international group of leading microbiologists have issued a warning, saying that not including microbes – the support system of the biosphere – in the climate change equation will have major negative flow-on effects. More than 30 microbiologists from 9 countries have issued a warning to humanity […]

Aerial view of melting permafrost near a research site in Arctic Canada. The unprecedented melt rate creates thermokarst, an irregular landscape dotted by lakes, holes, and mounds. Photo: Louise Farquharson

June 16, 2019

Arctic permafrost melting 70 years sooner than expected, study finds – “This change is unprecedented on this kind of time scale”

By Jan Wesner Childs 14 June 2019 (The Weather Channel) – Scientists studying climate change expected layers of permafrost in the Canadian Arctic to melt by the year 2090. Instead, it’s happening now. A new study published this week in the journal Geophysical Research Letters revealed that unusually warm summers in the Canadian High Arctic between 2003 […]

List environmental regulations rolled back by the Trump administration, updated on 7 June 2019. Graphic: The New York Times

June 14, 2019

83 environmental rules being rolled back under Trump

By Nadja Popovich, Livia Albeck-ripka, and Kendra Pierre-Louis 7 June 2019 (The New York Times) – President Trump has made eliminating federal regulations a priority. His administration, with help from Republicans in Congress, has often targeted environmental rules it sees as burdensome to the fossil fuel industry and other big businesses. [cf. Trump regulation rollbacks will […]

Carbon emissions from the power sector 2018. Graphic: BP

June 11, 2019

BP Statistical Review of World Energy 2019: “A growing mismatch between hopes and reality”

By Spencer Dale 11 June 2019 (BP) – The Statistical Review of World Energy has been providing timely and objective energy data for the past 68 years. In addition to the raw data, the Statistical Review also provides a record of key energy developments and events through time. My guess is that when our successors […]

June 9, 2019

Graph of the Day: Carbon emissions and human population, 1751-2018

9 June 2019 (Desdemona Despair) – It’s time to update one of Desdemona’s favorite graphs: human carbon emissions per capita. In the last update, four years ago, we had carbon emissions data through the year 2013, and it was clear that per-person emissions growth followed a nearly perfect exponential curve. The curve passed through one ton […]