Siberia – Desdemona Despair

Effects of experimental open-top chamber (OTC) warming on ecosystem respiration (ER). Experimental warming increased ER across the tundra biome but the magnitude of the response varied across time and space. Effect of OTC warming on ER Hedges’ SMD calculated as (mean ER of the warmed plots − mean ER of the control plots)/pooled standard deviation across the 136 growing season datasets (that is, unique experiment × ER measurement year combinations). On the top of the graph, a blue diamond shows the mean estimate (est. = 0.57 and 95% CI [0.44–0.70], error bars) of the ER response across the 136 datasets, as well as the Q value testing for heterogeneity and P value from the meta-analysis. Black dots represent ER Hedges’ SMDs of individual datasets and 95% CIs (black error bars) in alphabetical and chronological order. Individual datasets are represented by the experiment ID in black (left) and ER measurement year (right) in a colour scale ranging from dark blue, light blue, orange to red which represents increasingly longer warming duration at the time of ER measurements. Experiments with more than 1 year of ER data are grouped. See Supplementary Tables 1, 2 and 4 for details on the datasets and SMD and CI values. The black dashed vertical line (SMD = 0) represents no change in ER with warming whereas the areas to the right and left of it represent increased (SMD > 0) versus decreased (SMD

April 28, 2024

Understanding climate warming impacts on carbon release from the tundra – “We anticipate an increase in respiration across the whole Arctic and alpine tundra”

By Sara-Lena Brännström 17 April 2024 (Umeå University) – A team of over 70 scientists from different countries used so called open-top chambers (OTCs) to experimentally simulate the effects of warming on 28 tundra sites around the world. OTCs basically serve as mini-greenhouses, blocking wind and trapping heat to create local warming. The warming experiments […]

The effect of Arctic wildfires on carbon release: Arctic wildfires accelerate the release of organic carbon from the soil into the atmosphere, which can strengthen the feedback to warming. Graphic: V. Altounian / Science

December 23, 2022

Unprecedented Arctic wildfires fuel climate warming cycle – “Larger and more intense wildfires could substantially accelerate the release of permafrost carbon into the atmosphere”

By Kat Kerlin 8 November 2022 (UC Davis) – From Sierra Nevada forests to Arctic peatlands, climate warming is turning some long-held carbon sinks into carbon sources as wildfires increasingly send stored carbon up in smoke. In the Arctic, vast amounts of carbon have been locked beneath frozen soil, much of it in peatlands. Climate warming dries […]

In the summer months, forest fires cover large parts of the Republic of Sakha with dense smoke. Image from an expedition cruise in August 2021, during which sediments from numerous lakes were sampled. Photo: Ramesh Glückler

September 4, 2022

In East Siberia, extreme wildfires are on the rise – “A shift in forest structure may result in a positive feedback on currently intensifying wildfires”

29 August 2022 (AWI) – In the past several years, East Siberia has repeatedly been hit by extreme wildfires. In order to understand which conditions promote the occurrence of wildfires in the region, a team of researchers led by Ramesh Glückler and Elisabeth Dietze from the Alfred Wegener Institute has now investigated the connections between […]

Projected forest position in Siberia and tundra area at year 3000 CE for different climate mitigation scenarios and under potential cooling back to 20th-century temperatures after peak temperatures have been reached. The area of tundra changes over time and can only partly recover when temperatures cool and forests recede (plots next of the maps show years 2000–3000 CE). Only tundra areas above the treeline (Walker et al., 2005) are considered. Map projection: Albers Equal Area. Graphic: Kruse and Herzschuh, 2022 / eLife

May 29, 2022

Siberia tundra could virtually disappear by mid-millennium – Larch forests could spread northward at a rate of 30 km per decade – “At this point, it’s a matter of life and death for the Siberian tundra”

25 May 2022 (AWI) – Due to global warming, temperatures in the Arctic are climbing rapidly. As a result, the treeline for Siberian larch forests is steadily advancing to the north, gradually supplanting the broad expanses of tundra which are home to a unique mix of flora and fauna. Experts from the Alfred Wegener Institute […]

Russia tree cover loss, 2001-2021. The rate of loss in in boreal forests reached unprecedented levels in 2021, increasing by 29 percent over 2020. An unprecedented fire season in Russia drove much of this increase. Russia experienced the worst fire season since record-keeping began in 2001, with more than 6.5 million hectares of tree cover loss in 2021. While fires are a natural part of boreal forest ecosystems, larger, more intense fires are worrying. Hotter, drier weather related to climate change has led to fire-prone conditions, drier peatlands and melted permafrost. Siberia’s vast peatland area — the largest in the world — stores massive amounts of carbon, which is released into the atmosphere when peat dries up. Melting permafrost also releases stored carbon and methane. These conditions may represent a new normal, impacting people living in Siberia and creating a feedback loop in which increasing fires and carbon emissions reinforce each other and lead to worsening conditions. Graphic: WRI

May 8, 2022

Vast forest losses in 2021 imperil global climate targets, report says – “We’re seeing fires burning more frequently, more intensively and more broadly than they ever would under normal conditions”

By Jake Spring 28 April 2022 SAO PAULO, April 28 (Reuters) – The world lost an area of forest the size of the U.S. state of Wyoming last year, as wildfires in Russia set all-time records and Brazilian deforestation of the Amazon remains high, a global forest monitoring project report said on Thursday. Global Forest Watch, which […]

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 […]

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 […]

Average annual global temperature (deg C) relative to 1850-1900. 2020 tied with 2016 as the hottest year on record. Data: ERA5 / Copernicus Climate Change Service. Graphic: The Guardian

January 9, 2021

2020 tied 2016 for hottest year ever recorded – “The extraordinary climate events of 2020 show us we have no time to lose”

By Damian Carrington 8 January 2021 (The Guardian) – The climate crisis continued unabated in 2020, with the joint highest global temperatures on record, alarming heat and record wildfires in the Arctic, and a record 29 tropical storms in the Atlantic. Despite a 7% fall in fossil fuel burning due to coronavirus lockdowns, heat-trapping carbon dioxide continued to build […]