Arctic – Page 3 – Desdemona Despair

Map showing GFS 2m Temperature Anomaly for 20 December 2022. Much of the Arctic in December 2022 experienced a burst of freak warming. Graphic: Climate Reanalyzer

December 20, 2022

December 2022 serving up baked Alaska and warming most of Arctic – “Record-setting weather like we’re seeing plenty of examples of in recent years does tell a real story of climate heating”

By Seth Borenstein 5 December 2022 (AP) – Much of the Arctic is in a burst of freak December warming. In Utqiagvik, Alaska’s northernmost community formerly known as Barrow, it hit 40 degrees (4.4 degrees Celsius) Monday morning. That’s not only a record by six degrees (3.3 degrees Celsius) but it’s the warmest that region has seen […]

Arctic annual air surface temperatures from October 2021 to September 2022 were the sixth warmest dating back to 1900. The image on the left depicts the departure from the average near-surface temperature across the Arctic during this period, with redder colors showing areas of greater than average warmth. The graphic on the right shows how the rate of Arctic air temperature warming has outpaced the rate of global warming. Data: ERA5 and NASA. Graphic: NOAA / Climate.gov

December 17, 2022

NOAA: Human-caused climate change fuels warmer, wetter, stormier Arctic

13 December 2022 (NOAA) – A typhoon, smoke from wildfires, and increasing rain are not what most imagine when thinking of the Arctic. Yet these are some of the climate-driven events included in NOAA’s 2022 Arctic Report Card, which provides a detailed picture of how warming is reshaping the once reliably frozen, snow-covered region which […]

Landsat images from 21 February 2000 (left) and 27 July 2019 (right) illustrating glacier retreat on top of Mount Kilimanjaro (United Republic of Tanzania). Photo: U.S. Geological Survey

November 19, 2022

Kilimanjaro’s and Africa’s last glaciers to go by 2050, says UN – “What is quite unprecedented in the historical record is how quickly this is happening”

By Patrick Hughes 3 November 2022 (BBC News) – Glaciers across the globe – including the last ones in Africa – will be unavoidably lost by 2050 due to climate change, the UN says in a report [UNESCO finds that some iconic World Heritage glaciers will disappear by 2050 –Des]. Glaciers in a third of […]

Near-surface temperature differences relative to the 1981–2010 average for 2022 to September. The map shows the median anomaly calculated from six data sets: HadCRUT5, ERA5, JRA-55, GISTEMP, NOAAGlobalTemp, and Berkeley Earth. Graphic: WMO

November 7, 2022

State of the Global Climate 2022: Sea level rise accelerates, European glacier melt shatters records, extreme weather causes devastation – “What climate scientists have warned about for decades is upon us”

By Seth Borenstein 6 November 2022 SHARM EL-SHEIKH, Egypt (AP) – Earth’s warming weather and rising seas are getting worse and doing so faster than before, the World Meteorological Organization warned Sunday in a somber note as world leaders started gathering for international climate negotiations. [Eight warmest years on record witness upsurge in climate change impacts –Des] […]

Predicted (left) and observed (right) sea levels caused by melting of the Greenland Ice Sheet (GrIS). A statistically significant correlation between the two fields (P < 0.001) provides an unambiguous observational detection of the near-field sea level fingerprint of recent GrIS melting in our warming world. Graphic: Coulson, et al., 2022 / Science

October 22, 2022

Discovery of “fingerprint” confirms alarming predictions of Greenland ice sheet melt – “How fast the ice sheets in Greenland and Antarctica will respond to warming is a really big unknown, and frankly a very scary unknown”

By Sarah Sloat 29 September 2022 (NBC News) – Scientists now have unambiguous proof that a phenomenon critical to predicting the impact of climate change exists. Researchers announced Thursday that they had detected the sea level “fingerprint” of the Greenland ice sheet melt, pinpointing the unique pattern of sea level change linked to the melting ice. It’s the […]

(a) Ocean thermal forcing (shaded areas) at the ocean bottom or 1000 m (whichever is shallower) and annual submarine melt rate (filled squares) at Greenland’s marine-terminating glaciers. The black dotted line shows the 1,000 m isobath and delineates the extent of the continental shelf. The black dashed regions on the ice sheet delineate the hydrological catchments for three large example glaciers: Jakobshavn Isbrae (JI), Helheim (HH) and Kangerdlugssuaq (KG). The five ice sheet regions considered throughout the paper—south (SO), central-west (CW), northwest (NW), northeast (NE) and north (NO)—are delineated by the black ticks. Other labels are the Irminger Sea (Irm), Davis Strait (Dav) and Denmark Strait (Den). Bathymetry is from ref. 42 and ref. 43. (b) Subglacial discharge (x axis, note logarithmic scale) and ocean thermal forcing (y axis) for each marine-terminating glacier. The background shading shows the resulting submarine melt rate. Glaciers are coloured by their regional grouping. The larger squares and error bars show the median and interquartile range for each region, respectively. (c) Submarine melt rate versus grounding line depth by region with fitted linear trends (all significant at the 5% level) as dashed lines. All the results shown in these plots are annually averaged over 1979–2018. Graphic: Slater and Straneo, 2022 / Nature Geoscience

October 21, 2022

Warmer air and warmer water are combining to melt Greenland ice sheet – “This unfortunately adds to the overwhelming body of evidence showing the sensitivity of the Greenland ice sheet to climate change”

By Rachel Koning Beals 17 October 2022 (MarketWatch) – The Greenland ice sheet — one of the two most important glaciers of its kind on Earth — may be even more sensitive to the warming climate than scientists previously thought. The findings, published in the journal Nature Geoscience, shed fresh light on the forces driving ice […]

Annual temperatures for Alaska, 1900-2018. Alaska’s ten coldest years on record (blue dots) all occurred before 1980. Meanwhile, nine of its ten warmest years on record have occurred since 1980. Data: NASA GISS and UAF / Brian Brettschneider. Graphic: Rick Thoman / Alaska Center for Climate Assessment and Policy

October 21, 2022

Warming waters causing mass die-off of Alaska snow crabs – Total numbers down 84 percent since 2018 – “The cold-water habitat they need was virtually absent, which suggests that temperature is really the key culprit in this population decline”

20 October 2022 (CBS News) – Climate change is a prime suspect in a mass die-off of Alaska’s snow crabs, experts say, after the state took the unprecedented step of canceling their harvest this season to save the species. According to an annual survey of the Bering Sea floor carried out by the National Oceanic and Atmospheric Administration, […]

The location of climate tipping elements in the cryosphere (blue), biosphere (green) and ocean/atmosphere (orange), and global warming levels their tipping points will likely be triggered at 1.5°C. Researchers see signs of destabilisation already in parts of the West Antarctic and Greenland ice sheets, in permafrost regions, the Amazon rainforest, and potentially the Atlantic overturning circulation as well. Graphic: Earth Commission / Globaïa

September 25, 2022

World at risk of passing multiple climate tipping points above 1.5°C global warming

8 September 2022 (Stockholm Resilience Centre) – Multiple climate tipping points could be triggered if global temperature rises beyond 1.5°C above pre-industrial levels, according to a major new analysis published in the journal Science. Even at current levels of global heating the world is already at risk of passing five dangerous climate tipping points, and risks […]

Greenland ice sheet flow sectors, individual catchments and peripheral ice caps with regional correspondence between annual values of mass balance and accumulation area ratio (AAR). The whiskers and ± quantities indicate ensemble single s.d. The ice sector outlines are after Morlighem, et al., 2017. Graphic: Box, et al., 2022 / Nature Climate Change

September 18, 2022

Glaciers and “zombie ice”: The planet is melting at both poles, research finds – “We are already into dangerous levels of greenhouse gases that will have consequences far beyond 10 inches of sea level rise”

By Matthew Rozsa 7 September 2022 (Salon) – That sea levels will rise as Earth’s ice melts is a prophecy that began to come true long ago, at the dawn of industrial civilization when humans began pumping vast amounts of greenhouse gases into the atmosphere. Yet the timeline for sea level rise is not yet fully understood, nor do we really […]

The conservation status of the world’s 58,497 tree species in 2022. Graphic: BGCI

September 17, 2022

At least one-third of Earth’s trees face extinction – Scientists issue “warning to humanity” that tree species extinction could bring economic as well as ecosystem crisis

LONDON, 1 September 2022 (BGCI) – Today a new paper by leading scientists and the Botanic Gardens Conservation International (BGCI) reveals the severe impact that tree species extinction will have on other species, ecosystems and livelihoods. This comes exactly one year on from the landmark State of the World’s Trees report, which examined global tree species and found that a […]