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

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 […]

Combined land and ocean temperature anomalies in June in Europe, 1910-2019. 26–30 June 2019 brought the greatest June heat wave in European history. Hundreds of stations with a long-term period of record (POR) set their all-time June maximum temperature records. Graphic: James P. Galasyn / NOAA

June 2019: Earth’s hottest June on record and greatest June heat wave in European history

By Dr. Jeff Masters 18 July 2019 (Weather Underground) – June 2019 was the planet’s warmest June since record keeping began in 1880, said NOAA’s National Centers for Environmental Information (NCEI) on Tuesday. NASA also rated June 2019 as the warmest June on record, well of ahead of the previous record set in 2015. The global heat in June […]

Area burned by California wildfires in thousands of square kilometers, 1972-2018. Specific regions studied are at upper left. Graphic: Williams, et al., 2019 / Earth’s Future

Global warming drives 8X increase in California summer wildfires and 5X increase in area burned – “The ability of dry fuels to promote large fires is nonlinear”

By Kevin Krajick 15 July 2019 (Columbia University) – Against a backdrop of long-term rises in temperature in recent decades, California has seen ever higher spikes in seasonal wildfires, and, in the last two years, a string of disastrous, record-setting blazes. This has led scientists, politicians and media to ponder: what role might warming climate be […]

Ohio statewide butterfly population trends of nine resident species with annual variation. Plotted are model predictions for each year based on the fixed effects of year (solid line) and annual random effects (dots) to show annual variation about the trend line. Shading shows 95 percent confidence intervals based on bootstrapped model fits in the poptrend package for the temporal trend and for the annual random effects. The first year’s estimate is set to a value of 1 as a baseline for relative population changes. Graphic: Wepprich, et al., 2019 / PLOS ONE

Decades-long butterfly study shows 33 percent population loss – “These declines in abundance are happening in common species”

By Steve Lundeberg 2 July 2019 CORVALLIS, Oregon (Oregon State University) – The most extensive and systematic insect monitoring program ever undertaken in North America shows that butterfly abundance in Ohio declined yearly by 2%, resulting in an overall 33% drop for the 21 years of the program. Though the study was limited to one […]

Satellite view of Tropical Storm Barry, 12 July 2019. Photo: NOAA

Devastating floods possible as Tropical Storm Barry sloshes into Louisiana – “It doesn’t matter what the storm is called. We are still expecting a major rainfall flood event.”

By Bob Henson 12 July 2019 (Weather Underground) – Residents of southeast Louisiana need to finalize preparations for widespread and severe flooding this weekend with the approach of Tropical Storm Barry. Packing top sustained winds of 65 mph, slow-moving Barry will push its way onshore Saturday, possibly as a Category 1 hurricane. What matters most […]

Estimates of rainfall rates in the Washington, D.C. area on 8 July 2019 from NASA's Global Precipitation Measurement Core Observatory. Graphic: NASA

Wettest 12 months in U.S. history, yet again

By Bob Henson 9 July 2019 (Weather Underground) – Topping a remarkable record that was set just a month earlier, the year-long period ending in June was the wettest 12-month span in U.S. records that go back to 1895. For the 48 contiguous U.S. states, precipitation averaged 37.86” over the period from July 2018 to […]

Total U.S. managed honey bee colonies loss estimates 2006-2019. For the entire survey period (1 April 2018 – 1 April 2019), beekeepers in the U.S. lost an estimated 40.7 percent of their managed honey bee colonies. This is similar to last year’s annual loss estimate of 40.1 percent, but slightly higher (2.9 percentage points) than the average annual rate of loss reported by beekeepers since 2010-11 (37.8 percent). Graphic: Bee Informed

Nearly 40 percent decline in honey bee population last winter “unsustainable” – Trump administration cuts funding for bee research

By Julia Jacobo 9 July 2019 (ABC News) – Scientists are researching the potential consequences of the rapid decline of the honey bee population in the U.S. and how to mitigate its effects before it causes dire problems for crop management and production. Honey bees are essential for the pollination of flowers, fruits and vegetables, and support about $20 […]

U.S. greenhouse gas emissions under current federal and state policy, net emissions (million metric tons of CO2e). Graphic: Rhodium Group

Taking Stock 2019: U.S. on track to miss Paris Agreement climate goal by wide margin

By Hannah Pitt, Kate Larsen, Hannah Kolus, Shashank Mohan, John Larsen, Whitney Herndon, and Trevor Houser 8 July 2019 (Rhodium Group) – For the past five years, Rhodium has provided an independent annual assessment of US greenhouse gas (GHG) emissions and progress towards achieving the country’s climate goals. Given the current state and federal policy […]

Estimated precipitation from radar combined with rain gauge data during the record rainfall in the Washington, D.C. region on 8 July 2019. Data: Pivotal Weather. Graphic: The Washington Post

Record downpour paralyzes Washington, D.C. with flash flood – “This event goes off the scale”

By Jason Samenow, Ian Livingston, and Jeff Halverson 8 July 2019 (The Washington Post) – A month’s worth of rain deluged the immediate D.C. area early Monday, resulting in one of its most extreme flooding events in years. The record-setting cloudburst unleashed four inches of water in a single hour, way too much for a […]

Example of coastal flooding in Alamitos Bay, California with 0.25 m of sea level rise and storms. This example illustrate that there are locations with significant flood risks for small amounts of sea level rise when storms are considered. Graphic: Barnard, et al., 2019 / Scientific Reports

Trump officials deleting mentions of “climate change” from U.S. Geological Survey press releases – “It’s an insult to the science”

By Scott Waldman 8 July 2019 (Science) – A March news release from the U.S. Geological Survey (USGS) touted a new study that could be useful for infrastructure planning along the California coastline. At least that’s how President Donald Trump’s administration conveyed it. The news release hardly stood out. It focused on the methodology of […]

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