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 […]

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. […]

Land surface temperature over Europe, 25 July 2019, measured by the Copernicus Sentinel3 satellite. Graphic: ESA

WMO: July 2019 equaled or surpassed hottest month globally – World is on track for the 2015-2019 period “to be the five hottest years on record”

1 August 2019 (WMO) – According to the new data from the World Meteorological Organization and Copernicus Climate Change Programme, July 2019 at least equalled, if not surpassed, the hottest month in recorded history. This follows the warmest ever June on record. The data from the Copernicus Climate Change Programme, run by the European Centre […]

UK maximum temperature for 28 June 2018, actual value. Graphic: Met Office

Top ten UK’s hottest years all since 2002 – None of the ten coldest years occurred after 1963

31 July 2019 (Met Office) – An updated analysis of the annual UK temperature records from the Met Office shows that since 1884 all of the UK’s ten warmest years have occurred since 2002; whereas none of the ten coldest years have occurred since 1963. These figures are further indications of a changing climate, says […]

Daily sea ice conventration analysis for 27 July 2019. Graphic: NWS Alaska Sea Ice Program

Record-breaking European heat wave heads north, massive melting likely in Arctic – “This actually primes things for more sea ice loss later, on the order of weeks”

By Bob Henson 29 July 2019 (Weather Underground) – Over the next few days, meltwater will cascade across the Greenland Ice Sheet, and sea ice will dissolve into the Arctic Ocean in amounts that could be unprecedented for late July and early August. The same air mass that led to the sharpest, hottest heat wave ever […]

Aerial view of Millstone Power Station. Unit 2 of Millstone Power Plant near New London was shut down on 12 August 2012 after temperatures in the sound exceeded 75 degrees for 24 hours, the maximum temperature at which the nuclear power plant has permits to extract cooling water for the unit. Photo: Roger Ressmeyer / Corbis

Nuclear power, once seen as impervious to global warming, threatened by heat waves – “You need to solve global warming for nuclear plants to survive”

By Alan Neuhauser 1 July 2019 (US News) – There’s a reason nuclear plants are built close to water. Harnessing the enormous power of nuclear fission, plants generate steam, which shoots through pipes to spin a turbine that generates massive amounts of electricity. To keep from getting dangerously hot, the plants suck up surrounding water […]

Stability diagram of the West Antarctic Ice Sheet (WAIS), rate R versus duration T of mass addition with unstable regime in red and stable regime in blue. Interpolation of the field is based on the conducted ensemble of stabilization experiments (gray circles). The critical threshold Rc (white curve) of stabilization is approximated by function given at the top right corner. White stars highlight simulations that share the same total amount of deposited mass (M = 8000 Gt), added at differing rate and duration, showing that the combination of both determines potential stabilization. Graphic: Feldmann, et al., 2019 / Science Advances

Adding 8 trillion tons of artificial snow to the West Antarctic Ice Sheet could stop it from collapsing – “The fundamental trade-off is whether we as humanity want to sacrifice Antarctica to save the currently inhabited coastal regions”

By Katherine J. Wu 17 July 2019 (PBS) – Gird your loins, humans: The time has come to turn part of the South Pole into our own giant snow globe. Or has it? In a study published today in the journal Science Advances, a team of German researchers suggests that dumping 8 trillion tons of artificial snow onto […]

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 […]

Satellite view of East Island, Hawaii before (top) and shortly after (bottom) category 5 Hurricane Walaka in October 2018. Source: Maxar Technologies. Graphic: Jiachuan Wu / NBC News

Three islands disappeared in the past year – The same forces put coastlines around the world at risk – “The sooner we start thinking about this, the less painful it’s going to be”

By Denise Chow 9 June 2019 (NBC News) – Anote Tong can remember when Tebunginako, on the central Pacific island nation of Kiribati, was a thriving village. But beginning in the 1970s, the tide started inching closer to the houses in the village. Over the years, as strong winds whipped up monster waves and climate […]

Aerial view of Staten Island with proposed sea wall indicated. Graphic: Vox.png

Video: New York is building a wall to hold back the ocean

10 June 2019 (Vox) – Climate change is leading to increasingly violent storms. Can seawalls hold back floods? Staten Island recently received funding for a nearly 5-mile-long seawall to protect its coast. But the plan raises a lot of questions. We’re living in a dangerously dynamic world: Hurricanes are getting worse, wildfires are rampant in […]

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