Atmospheric CO2 concentrations, 2014-2019 and projected through 2020. Forecast (red) CO2 concentrations at the Mauna Loa observatory, with previous forecasts (blue) are compared to observations (black). The forecast uncertainty range (orange) based on the SST forecast is ± 2 standard deviations. Graphic: Met Office

Australia bushfires contribute to big rise in global CO₂ levels in 2020

By Grahame Madge 24 January 2020 (Met Office) – A forecast of the atmospheric concentration of carbon-dioxide shows that 2020 will witness one of the largest annual rises in concentration since measurements began at Mauna Loa, in Hawaii, 1958. During the year the atmospheric concentration of CO₂ is expected to peak above 417 parts per […]

Global surface temperature anomalies, 1880-2019, compared with the 1880-1899 average. The year 2019 was the second warmest year on record, capping the warmest decade since measurements began. Data: Gavin Schmidt / NASA GISTEMP. Graphic: InsideClimate

2010-2019: Earth’s hottest decade on record marked by extreme storms, deadly wildfires – “The climate of the 20th Century is gone. We’re in a new neighborhood.”

By Bob Berwyn 19 December 2019 (InsideClimate News) – Deadly heat waves, wildfires and widespread flooding punctuated a decade of climate extremes that, by many scientific accounts, show global warming kicking into overdrive. As the year drew to a close, scientists were confidently saying 2019 was Earth’s second-warmest recorded year on record, capping the warmest […]

Hansen, et al. (1988) projections compared with observations on a temperature vs. time basis (top) and temperature vs. external forcing (bottom). Graphic: Hausfather, et al., 2019 / Geophysical Research Letters

Early climate modelers got global warming right, new report finds – “The warming we have experienced is pretty much exactly what climate models predicted it would be as much as 30 years ago”

By Robert Sanders 4 December 2019 (Berkeley News) – Climate skeptics have long raised doubts about the accuracy of computer models that predict global warming, but it turns out that most of the early climate models were spot-on, according to a look-back by climate scientists at the University of California, Berkeley, Massachusetts Institute of Technology […]

Extinction Rebellion demonstrators protest in front of Norway’s embassy during the launch of a new wave of civil disobedience in Berlin, Germany, 11 October 2019. Photo: Christian Mang / Reuters

The dark side of the Nordic model: Scandinavian countries top every ranking on human development, but they are a disaster for the environment

By Jason Hickel 6 December 2019 (Al Jazeera) – Scandinavians have it all. Universal public healthcare and education that is the envy of the world. Reasonable working hours with plenty of paid vacation. They have some of the highest levels of happiness on the planet, and top virtually every ranking of human development. The Nordic […]

Carbon dioxide emissions from natural gas, petroleum, coal, and land use changes, 1998-2017, in gigatons of CO2 per year. Graphic: GCP

Global carbon emissions growth slows, but still hits record high in 2019 – “Emissions cuts in wealthier nations must outpace increases in poorer countries where access to energy is still needed”

By Rob Jordan 3 December 2019 (Stanford News Service) – The runaway train that is climate change is about to blow past another milestone: global fossil-fuel carbon dioxide emissions will reach yet another record high. Driven by rising natural gas and oil consumption, levels of CO2 are expected to hit 37 billion metric tons this […]

Globally averaged CO2 mole fraction (a) and its growth rate (b) from 1984 to 2018. Increases in successive annual means are shown as shaded columns in (b). The red line in (a) is the monthly mean with the seasonal variation removed; the blue dots and line depict the monthly averages. Observations from 129 stations have been used for this analysis. Graphic: WMO

Greenhouse gas concentrations in atmosphere reached yet another high in 2018

GENEVA, 25 November 2019 (WMO) – Levels of heat-trapping greenhouse gases in the atmosphere have reached another new record high, according to the World Meteorological Organization. This continuing long-term trend means that future generations will be confronted with increasingly severe impacts of climate change, including rising temperatures, more extreme weather, water stress, sea level rise […]

Graphs showing change in global human activities from 1979 to the present. Graphic: Ripple, et al., 2019 / BioScience

More than 11,000 scientists issue warning of climate emergency – “An immense increase of scale in endeavors to conserve our biosphere is needed to avoid untold suffering due to the climate crisis”

5 November 2019 (BioScience) – Scientists have a moral obligation to clearly warn humanity of any catastrophic threat and to “tell it like it is.” On the basis of this obligation and the graphical indicators presented below, we declare, with more than 11,000 scientist signatories from around the world, clearly and unequivocally that planet Earth […]

Projected (a) mean winter (Oct-April) soil temperature, (b) mean winter air temperature, (c) mean leaf area index (July-August), (d) annual gross primary productivity (GPP), (e) mean non-summer (NS; September - May) unfrozen soil moisture, (f) mean summer soil moisture (June-August), and (g) cumulative summer precipitation (June-August) for the northern permafrost region from 2018 through 2100 under RCP 4.5 (blue) and 8.5 (red) based on ESM ensemble outputs. Graphic: Natali, et al., 2019 / Nature Climate Change

Arctic shifts to a carbon source due to winter soil emissions – “The warmer it gets, the more carbon will be released into the atmosphere from the permafrost region, which will add to further warming”

By Samson Reiny 8 November 2019 (NASA) – A NASA-funded study suggests winter carbon emissions in the Arctic may be adding more carbon into the atmosphere each year than is taken up by Arctic vegetation, marking a stark reversal for a region that has captured and stored carbon for tens of thousands of years. The […]

Map of air pollution in India showing Air Quality Index meters maxed at 999 on 3 November 2019. Graphic: AQICN

India air pollution deteriorates to “hazardous” rating – “Pollution has reached unbearable levels across North India”

3 November 2019 (BBC News) – Air pollution in the north of India has “reached unbearable levels,” the capital Delhi’s Chief Minister Arvid Kejriwal says. In many areas of Delhi air quality deteriorated into the “hazardous” category on Sunday with the potential to cause respiratory illnesses. Authorities have urged people to stay inside to protect […]

In Doha, Qatar, Fans equipped with misters blow moist air on evening diners who sit beside cooling units. Overnight lows rarely dip below 90 degrees Fahrenheit in the summer. Photo: Salwan Georges / The Washington Post

Facing unbearable heat, Qatar has begun to air-condition the outdoors – “The Persian Gulf is a prophecy of what’s to come”

By Steven Mufson 16 October 2019 DOHA, Qatar (The Washington Post) – It was 116 degrees Fahrenheit in the shade outside the new Al Janoub soccer stadium, and the air felt to air-conditioning expert Saud Ghani as if God had pointed “a giant hair dryer” at Qatar. Yet inside the open-air stadium, a cool breeze was blowing. […]

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