Arctic – Page 4 – Desdemona Despair

A scientist with PROMIS/GEUS checks instruments on the Greenland ice sheet, 1 September 2021. The ice is darkened by an unprecedented algae bloom caused by persistent cloudy and rainy conditions in 2021 that promoted ice algae growth. Photo: GEUS

January 8, 2022

Algae blooms darken Greenland ice sheet after unprecedented rainfall in 2021 – “I never saw the ice as dark as this”

5 January 2022 (PROMICE) – GEUS and PROMICE professor Jason Box recently made the front page in Danish national media with testimony of algal blooms and rain on the Greenland ice sheet. PROMICE field work helps quantify the ice algae blooms and their effect on melting. In Autumn 2021, Professor Jason Box and two PROMICE […]

Map showing global land and ocean surface temperature anomaly for June 2020. On 14 December 2021, WMO announced verification of the highest temperature ever recorded in the Arctic, 38C (100F). The high temperatures across Siberia led to massive sea ice loss and played a major role in 2020 being one of the three warmest years on record, the WMO said. Averaged as a whole, the global land and ocean surface temperature for June 2020 was 0.92°C (1.66°F) above the 20th century average of 15.5°C (59.9°F), tying with 2015 as the third highest June temperature departure from average in the 141-year record. June 2020 marked the 44th consecutive June and the 426th consecutive month with temperatures, at least nominally, above the 20th century average. Nine of the 10 warmest Junes have occurred since 2010; the seven warmest Junes have occurred in the last seven years (2014–2020). Graphic: NCEI

December 29, 2021

Arctic heat record is like Mediterranean, says WMO – “The record is clearly indicative of warming across Siberia”

14 December 2021 (BBC News) – The highest temperature ever recorded in the Arctic, 38C (100F), has been officially confirmed, sounding “alarm bells” over Earth’s changing climate. The World Meteorological Organization (WMO) on Tuesday verified the record, reported in the Siberian town of Verkhoyansk on 20 June last year. The temperature was 18C higher than […]

Atlantic Meridional Overturning Circulation (AMOC) sea surface temperature (SST) fingerprint. Multimodel mean correlation map between the low-frequency AMOC at 26°N and SST (12). Stars numbered 1 to 16 denote location of sites referred in the figures. The reconstructed AMV at South Sawtooth Lake (1), August temperature in Vøring Plateau off Norway (2), Eastern Fram Strait IRD (3), Atlantic water influence based on C. neoteresis in Western Fram Strait (4), East Greenland Strait N. labradorica (5), North Icelandic shelf temperature based on δ18O from bivalve shells (6), IRD in Denmark Strait (7), the RAPiD-35-COM δ18O T. quinqueloba (8), percentage of Atlantic species in Disko Bugt (9), the RAPID-21-COM sortable silt in the ISOW (10), Gulf of Maine reconstructed SST from bivalve shells (11), titanium (%) in the Cariaco Basin (12), Quelccaya ice record δ18O (13), Huagapo speleothem δ18O (14), and Lake Bosumtwi lake level inferred from δ18O (15). The James Ross Island ice core record with annually resolved δD is shown (16). Graphic: Lapointe and Bradley, 2021 / Science Advances

December 25, 2021

Researchers uncover the surprising cause of the Little Ice Age – “We may be underestimating future ice loss from the Greenland ice sheet”

AMHERST, Massachusetts, 15 December 2021 (University of Massachusetts Amherst) – New research from the University of Massachusetts Amherst provides a novel answer to one of the persistent questions in historical climatology, environmental history and the earth sciences: what caused the Little Ice Age? The answer, we now know, is a paradox: warming. The Little Ice […]

(a) Linear sea surface temperature (SST) trend (°C yr-1) for August of each year from 1982 to 2021. The trend is only shown for values that are statistically significant at the 95 percent confidence interval; the region is shaded gray otherwise. White shading is the August 2021 mean sea ice extent, and the yellow line indicates the median ice edge for Aug 1982-2010, (b, c) Area-averaged SST anomalies (°C) for August of each year (1982-2021) relative to the 1982-2010 August mean for (b) Baffin Bay and (c) Chukchi Sea regions shown by blue boxes in (a). The dotted lines show the linear SST anomaly trends over the period shown and trends in °C yr-1 (with 95 percent confidence intervals) are shown on the plots. Mean August SST warming trends from 1982 to 2021 persist over much of the Arctic Ocean, with statistically significant (at the 95 percent confidence interval) linear warming trends of up to +0.1°C yr-1 (a). Overall, Baffin Bay SSTs are becoming warmer in August with a linear warming trend over 1982-2021 of 0.05 ± 0.01°C yr-1 (b). Similarly, Chukchi Sea August mean SSTs are warming, with a linear trend of 0.06 ± 0.03°C yr-1 (c). Mean August SSTs for the entire Arctic (the Arctic Ocean and marginal seas north of 67° N) exhibit a linear warming trend of 0.03 ± 0.01°C yr-1. Graphic: Timmermans and Labe / NOAA

December 24, 2021

NOAA’s 2021 Arctic Report Card: Rapid and pronounced warming continues to drive the evolution of the Arctic environment

By T. A. Moon, M. L. Druckenmiller, and R. L. Thoman 6 December 2021 (NOAA) – As the influences of human-caused global warming continue to intensify, with the Arctic warming significantly faster than the globe overall, the 2021 Arctic Report Card (ARC2021) brings a broad view of the state of the Arctic climate and environment. […]

Map showing trends of early-warning indicators of Atlantic Meridional Overturning Circulation (AMOC) collapse. a, Linear trends of the corrected restoring rate λ estimated from the HadISST dataset assuming autocorrelated noise. b, Same as (a) but for the EN4 salinity dataset. c, Linear trends of the variance estimated from the HadISST dataset. d, Same as (c) but for the EN4 salinity dataset. e, Linear trends of the AC1 estimated from the HadISST dataset. f, Same as (e) but for the EN4 salinity dataset. Note the high positive values in the northern Atlantic and the subpolar gyre region in particular for λ and AC1, but also in the southern Atlantic ocean where a salinity pileup has recently been associated with an AMOC slowdown. Graphic: Boers, 2021 / Nature Climate Change

August 22, 2021

Gulf Stream could be veering toward irreversible decline, a new analysis warns – Atlantic current “approaching a critical threshold beyond which the circulation system could collapse”

By Ben Turner 6 August 2021 (LiveScience) – One of the most crucial ocean current systems for regulating the Northern Hemisphere’s climate could be on the verge of total collapse due to climate change, a new study has revealed. The Atlantic Meridional Overturning Circulation (AMOC), which includes the Gulf Stream and is responsible for moderating […]

Time series of climate-related responses to anthropogenic drivers, 1990-2020. Out of the 31 tracked planetary vital signs, 18 were at new all-time record lows or highs in 2020. Data obtained before and after the publication of Ripple and colleagues (2020) are shown in gray and red respectively. For variables with relatively high variability, local regression trend lines are shown in black. The variables were measured at various frequencies (e.g., annual, monthly, weekly). The labels on the x-axis correspond to midpoints of years. Sources and additional details about each variable are provided in the supplemental material. Graphic: Ripple, et al., 2021 / BioScience

July 31, 2021

World scientists’ warning of a climate emergency 2021 – Humans face untold suffering from “the consequences of unrelenting business as usual”

28 July 2021 (BioScience) – In 2019, Ripple and colleagues (2020) warned of untold suffering and declared a climate emergency together with more than 11,000 scientist signatories from 153 countries. They presented graphs of planetary vital signs indicating very troubling trends, along with little progress by humanity to address climate change. On the basis of […]

Firefighters work at the scene of forest fire near Andreyevsky village outside Tyumen, western Siberia, Russia, on 16 June 2021. Wildfires in Siberia are releasing record amounts of greenhouse gases, scientists say, contributing to global warming. Photo: Maksim Slutsky / AP Photo

July 25, 2021

Siberia hit by unprecedented wildfires – 1.5 million hectares burn after driest weather in 150 years – “Everything is on fire”

By Andrew Roth 20 July 2021 MOSCOW (The Guardian) – Every morning and evening for the last few days, shifts of young villagers have headed out into the taiga forest around Teryut with a seemingly impossible task: to quell the raging fires that have burned closer and closer for a month, shrouding this remote eastern […]

Satellite view of smoke from wildfires in the Yakutia region of Siberia, 18 July 2021. Photo: NASA / EOSDIS

July 18, 2021

Siberia permafrost ablaze with hundreds of wildfires in world’s coldest region – Half are burning unchecked due to firefighter shortage – “Siberia is dying now”

13 July 2021 (The Siberian Times) – Wildfires on permafrost are ravaging Yakutia – or the Sakha Republic, the largest and coldest entity of the Russian Federation. The scale is mesmerising. There are some separate 300 fires, now covering 12,140 square kilometres – but only around half of these are being tackled, because they pose […]

A wildfire rages beside the Kolyma highway, 30 June 2021. The highway is the major connection between the Republic of Sakha’s capital Yakutsk and the port town of Magadan, on the Sea of Okhotsk. The highway had to be shut because the fire got too close to the road and was much too fierce for safe driving. Photo: The Siberian Times

July 3, 2021

Siberia’s “Road of Bones” closed as early wildfires rage – “We can’t see the sun because of the smog, flakes of ash are raining from the sky. We are struggling to breathe, we really need help.”

By Svetlana Skarbo 30 June 2021 (The Siberian Times) – More than 2,000 people are deployed in extinguishing wildfires raging around Russia’s coldest inhabited territory, Yakutia, now in the third year of an extremely intense season of wildfires. The first of them ignited as early as the beginning of May right outside the world-famous Pole […]

Risk levels for climate-sensitive health outcomes based on different greenhouse gas emissions and adaptation scenarios. Graphic: IPCC WG 2 Sixth Assessment Report / AFP

June 23, 2021

Hunger, drought, disease: UN climate report reveals dire health threats – “The basis for our health is sustained by three pillars: the food we eat, access to water, and shelter. These pillars are totally vulnerable and about to collapse.”

By Patrick Galey 23 June 2021 (AFP) – Hunger, drought and disease will afflict tens of millions more people within decades, according to a draft UN assessment that lays bare the dire human health consequences of a warming planet. After a pandemic year that saw the world turned on its head, a forthcoming report by […]