Blended land and sea surface temperature anomalies and percentiles, February 2020. Graphic: NOAA / NCEI

February 2020 second warmest on record globally

By Bob Henson 13 March 2020 (Weather Underground) – Research groups across the world concur that this past northern winter (December-February) was the second-warmest on record globally, in records going back more than a century. The latest group to confirm this finding is NOAA, in its monthly State of the Climate report issued Friday. The winter result […]

Map showing land and ocean global temperature percentiles and departures from average for January 2020. The January 2020 global land and ocean surface temperature was the highest in the 141-year record at 2.05°F (1.14°C) above the 20th century average of 53.6°F (12.0°C). This value surpassed the previous record set in 2016 by only 0.04°F (0.02°C). Graphic: NOAA / NCEI

January 2020 was the warmest January on record for the globe

13 February 2020 (NCEI) – The globally averaged temperature departure from average over land and ocean surfaces for January 2020 was the highest for the month of January in the 141-year NOAA global temperature dataset record, which dates back to 1880. This monthly summary, developed by scientists at NOAA National Centers for Environmental Information, is […]

Spatial distribution of global surface ocean pHT (total hydrogen scale, annually averaged) in past (1770), present (2000) and future (2100) under the IPCC RCP8.5 scenario. Graphic: Jiang, et al., 2020 / Nature Scientific Reports

Graph of the Day: The Future of Ocean Acidification

18 December 2019 (NOAA) – New research by NOAA, the University of Maryland, and international partners published in Nature Scientific Reports shows that the changing chemistry of seawater has implications for continued greenhouse gas absorption. The ocean has been playing an important role in helping slow down global climate change by removing the greenhouse gas carbon dioxide […]

Aerial view of a sinkhole caused by rapid permafrost thawing. Abrupt thawing is “fast and dramatic” and it “affects landscapes in unprecedented ways” says Dr. Merritt Turetsky. Photo: Dr. Merritt Turetsky

“Fast and dramatic” permafrost thaw will double previous estimates of potential carbon emissions – “Forests can become lakes in the course of a month”

By Natacha Larnaud 4 February 2020 (CBS News) – Rapidly thawing permafrost in the Arctic has scientists worried. According to a new study published Monday in the journal Nature Geoscience, the ice that holds the soil together is melting, causing hillsides to collapse and massive sinkholes to open up as a result. And that dramatic disruption to […]

External carapace and pereopod exoskeleton of the Dungeness crab megalopae (a) in its undamaged form (b, c) and with dissolution presence ranging from mild (Stage 1; d) to severe (Stage 2; e, f) patterns showing similarity in the structural damages (g) or exposed crystals (h). Indicated is the scale of the measurements (μm). The undamaged megalopae originated from the offshore or northwards habitats characterized by low ∆Ωcal,60 vertical gradients, while the most severely affected megalopae came from the nearshore or coastal habitats with steep ∆Ωcal,60 conditions. Photo: Bednaršek, et al., 2020 / Science of The Total Environment

Dungeness crab larvae already showing effects of coastal acidification – “We found dissolution impacts to the crab larvae that were not expected to occur until much later in this century”

23 January 2020 (NOAA) – A new NOAA-funded study has documented for the first time that ocean acidification along the US Pacific Northwest coast is impacting the shells and sensory organs of some young Dungeness crab, a prized crustacean that supports the most valuable fishery on the West Coast. Analysis of samples collected during a […]

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 average surface temperature, 1880-2019. The 2010-2019 decade was by far the hottest ever measured on Earth, capped off by the second-warmest year on record in 2019. Data: NOAA / NCEI. Graphic: AP

Earth had its hottest decade on record in 2010s – “2020 is off to a horrifying climate start, and I fear what the rest of the year will bring to our doorsteps”

By Seth Borenstein 15 January 2020 WASHINGTON (AP) – The decade that just ended was by far the hottest ever measured on Earth, capped off by the second-warmest year on record, two U.S. agencies reported Wednesday. And scientists said they see no end to the way man-made climate change keeps shattering records. “If you think […]

Precipitation averages in the contiguous U.S. for overlapping two-year calendar periods, 1895-2019. The period 2018-19 was the wettest of these, with 69.43” coming in well above the previous record of 68.62” from 1982-83. Graphic: NOAA / NCEI

Second wettest year in U.S. history – Warmest year on record in Alaska

By Bob Henson 8 January 2020 (Weather Underground) – Capping a spectacularly soggy period that spanned parts of two calendar years, the contiguous United States saw its second wettest year on record in 2019, according to NOAA’s annual summary issued on Wednesday. The national average temperature wasn’t especially hot by recent standards, but there were […]

The tail of a male grey whale that stranded near Victoria, B.C. in April 2019, with skin eaten by an infestation of cyamids, or whale lice. Photo: Fisheries and Oceans Canada

In 2019, 214 grey whales washed up dead on the West Coast of North America – “They get eaten alive”

By Lisa Johnson 28 December 2019 (CBC News) – The first grey whale found dead in B.C. last year was in such rough shape that someone called to report it was tangled up in a big pink buoy. The pink wasn’t plastic, officials learned when they arrived to tow the skinny male to shore near […]

Animation showing the age of the Arctic sea ice between 2015 and 2019. Video: NASA

35 years of climate change in one video

By Johnny Wood 18 November 2019 (WEF) – Q: If you subtract 95 percent from something, what’s left? A: An environmental crisis. The “something” in question is the oldest and thickest solid layer of frozen water in the Arctic Ocean, which is melting so rapidly that just 5% of its original mass remains. Scientists from the […]

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