Media article co-visibility network-individual level. Clustered representation of the co-visibility network: nodes are climate change contrarians (CCCs) and climate change scientists (CCSs) who have at least one media article associated with at least one other individual. Links are colored according to three types: links between members of the CCC (CCS) group are red (blue) and links between groups are black; the percentages of links by type are reported in parentheses (e.g., 52 percent of links are within the CCC group). We used a modularity-maximizing clustering algorithm48 to identify three communities, with nodes ordered along each spine according to its network centrality—as such, the most prominent individuals are located at the apex. Two communities are well mixed, whereas the third represents an extremely polarized echo chamber comprised primarily of CCC. (inset) Magnification of the apex showing the most prominent individuals. Graphic: Peterson, et al., 2019 / Nature Communications

Media coverage creates false balance on climate science, study shows – “Climate change contrarians” receive 49 percent more media coverage than scientists

By Lorena Anderson 13 August 2019 (UC Merced) – The American media lends too much weight to people who dismiss climate change, giving them legitimacy they haven’t earned, posing serious danger to efforts aimed at raising public awareness and motivating rapid action, a new study shows. While it is not uncommon for media outlets to […]

Landsat 8 images from 21 July 2018 (left) and 16 September 2018 (right) illustrating the Taku Glacier transient snowline. The 21 July 2018 snowline is at 975 m and the 16 September 2018 snowline is at 1400 m. Average end-of-summer snowline is 975 m; the 2018 end-of-summer snowline was the highest observed in the 73-year record. Graphic: AMS

State of the Climate in 2018: 2018 was the fourth-hottest year on record, behind 2016, 2015, and 2017

12 August 2019 (NCEI) – A new State of the Climate report [pdf] confirmed that 2018 was the fourth warmest year in records dating to the mid-1800s. Last year was the fourth warmest year on record despite La Niña conditions early in the year and the lack of a short-term warming El Niño influence until […]

Graphs showing total precipitation averaged across the 48 contiguous U.S. states from January to July, 1895-2019; Statewide rankings for average precipitation for July 2019, as compared to each July since records began in 1895; and Statewide rankings for average temperature for July 2019, as compared to each July since records began in 1895. Graphic: NOAA / NCEI

U.S. racks up wettest calendar year to date in July 2019

By Bob Henson 7 August 2019 (Weather Underground) – The Big U.S. Wet of 2018-19 went on cruise control in July, but the year so far managed to hang on as the nation’s wettest calendar year to date in records going back more than a century, NOAA reported on Wednesday. Averaged across the 48 contiguous states, the […]

Graphs from the “Climate Change and Land 2019” report by the IPCC, showing changes relative to 1961 of greenhouse gas (GHG) emissions, world agricultural production, food demand, and desertification and land degradation. Graphic: IPCC

World food security increasingly at risk due to “unprecedented” climate change impact, new UN report warns

8 August 2019 (UN News) – More than 500 million people today live in areas affected by erosion linked to climate change, the UN warned on Thursday, before urging all countries to commit to sustainable land use to help limit greenhouse gas emissions before it is too late. Speaking at the launch of a Special […]

Satellite view showing more than 5 million km² of Siberia covered by smoke from wildfires, 11 August 2019. For comparison, the area of EU is about 4.5 million km², and the area of contiguous U.S. about 8.1 million km². Satellite image: MODIS / Terra. Graphic: Antti Lipponen

Image of the Day: Satellite view of 5 million km² of Siberia covered by smoke from wildfires, 11 August 2019

11 August 2019 (Twitter) – This satellite view shows more than 5 million km² of Siberia covered by smoke from wildfires on 11 August 2019. For comparison, the area of the EU is about 4.5 million km², and the area of contiguous U.S. about 8.1 million km². Satellite image: MODIS / Terra. Graphic: Antti Lipponen […]

Annual increase in global average sea from 1900 to present. The blue line shows data from the tide gauges, while the red is from satellite altimetry. Graphic: Carbon Brief

Global sea level rise began accelerating “30 years earlier” than previously thought

By Ayesha Tandon 5 August 2019 (CarbonBrief) – Global sea level rise began to accelerate in the 1960s, 30 years earlier than suggested by previous assessments, a new study finds. The study, published in Nature Climate Change, introduces a new technique to more accurately determine historical global sea levels by combining two different statistical approaches. […]

A thermometer show the temperature of over 40 degrees at the Volklingen Ironworks in Volklingen, Germany on 24 July 2019. Photo: Harald Tittel / AFP / Getty Images

AccuWeather misleads on global warming and heat waves, a throwback to its past climate denial

By Jason Samenow and Andrew Freedman 9 August 2019 (The Washington Post) – A week after a punishing heat wave torched the eastern two-thirds of the country, setting numerous records, AccuWeather chief executive Joel Myers cast doubt on the scientific finding that heat waves in the United States and elsewhere are worsening because of climate change. […]

Temperature field over Europe on 25 July 2019 12 UTC at 850 hPa (colors) together with 500 hPa (isolines) as obtained from ECMWF analyses. Graphic: ECMWF

European heatwave made up to 100 times more likely due to global warming – “The July 2019 heatwave was so extreme over Europe that the observed magnitudes would have been extremely unlikely without climate change”

2 August 2019 (University of Oxford) – Record-breaking July 2019 heatwave would have been extremely unlikely without human-induced climate change in many parts of continental Europe, shows a near real-time analysis from World Weather Attribution and partners including Oxford’s Environmental Change Institute (ECI). Over two to four days at the end of July 2019, Western […]

Species richness of freshwater megafauna in the year 1500 and in the 21st Century in Europe. Graphic: Fengzhi He, 2019

88 percent decline of big freshwater animals over 40-year period – “The results are alarming and confirm the fears of scientists involved in studying and protecting freshwater biodiversity”

By Nadja Neumann 8 August 2019 (IGB) – Rivers and lakes cover just about one percent of Earth’s surface, but are home to one third of all vertebrate species worldwide. At the same time, freshwater life is highly threatened. Scientists from the Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB) and international colleagues have now […]

Animation showing the concentration of black carbon particulates — commonly called soot — around the Arctic from 1 July 2019 to 29 July 2019. Graphic: Lauren Dauphin / NASA Earth Observatory

Arctic fires fill Northern Hemisphere skies with soot

By Kasha Patel 1 August 2019 (NASA) – In June and July 2019, more than 100 long-lived and intense wildfires blazed within the Arctic Circle. Most of them burned in Alaska and Siberia, though a few raged even in Greenland. As these fires lofted thick plumes of smoke into the skies, they also launched megatons of tiny, harmful particles into the […]

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