Lmst

Integrating Characteristic Arctic Vegetation In A Land Surface Model Improves Representation Of Carbon Dynamics Across A Tundra Landscape
--
https://doi.org/10.1029/2025JG009039 <-- shared paper
--
[ https://doi.org/10.3390/land14091839 <-- shared paper ]
--
#tundra #arctic #vegetation #spatialanalysis #arcticwarming #warming #climate #carbon #carbonsink #carbonsource #carbondynamics #carboncycle #EnergyExascale #earthsystemmodels #ESM #model #modeling #plant #functional #PFT #Alaska #Seward #Peninsula #casestudy #biomass #ecosystem #remotesensing #scaling #drone #aircraft #insitu #GIS #spatial #sampling #earthsystem

🌡️ Winter in the Arctic is changing fast. In Feb 2025, Svalbard saw record warmth and rain, causing snowmelt and water pooling—signs of a rapidly shifting Arctic. A new climate reality is unfolding.
🔗 https://www.nature.com/articles/s41467-025-60926-8?utm_source=mastodon&utm_medium=social&utm_campaign=fedica-Autoposting
#ArcticWarming #ClimateCrisis #Svalbard #NewArctic #NatureClimate

#WorldWaterDay 2025: History, Significance, And Importance Of #Glacier Preservation For Future #WaterSecurity

"Every year on March 22, the world comes together to observe World Water Day, a significant occasion dedicated to raising awareness about freshwater conservation and its sustainable management. The day serves as a call to action, reinforcing the United Nations’ Sustainable Development Goal, which aims to ensure clean water and sanitation for all by 2030.

"As we mark World Water Day 2025, let’s take a deeper look into its history, significance, this year’s theme, and the crucial role of glacier preservation in securing the future of global water supplies."

#DrillBabyDrill! smh
#Alaska governor asks #Trump to roll back restrictions on #OilAndGasDrilling

By Becky Bohrer, December 20, 2024

JUNEAU, Alaska (AP) — "Alaska Gov. #MikeDunleavy’s wish list for the incoming Trump administration includes oil and gas exploration in the pristine #ArcticNationalWildlifeRefuge and reversing restrictions on #logging and road-building in a temperate #rainforest that provides habitat for #wolves, #bears and #salmon."

#RenewablesNow #BigOilAndGas #USPol #ProtectTheArctic #Extinction #ArcticWarming #Corporatocracy #CorporateColonialism #CorporateFascism

#Arctic #tundra is now emitting more #carbon than it absorbs, US agency says

Drastic shift driven by frequent #wildfires, pushing surface air #temperatures to second-warmest on record since 1900

by Dharna Noor, Tue 10 December

"The Arctic tundra is undergoing a dramatic transformation, driven by frequent wildfires that are turning it into a net source of carbon dioxide emissions after millennia of acting as a carbon sink, the US National Oceanic and Atmospheric Administration (#Noaa) said on Tuesday.

"This drastic shift is detailed in Noaa’s 2024 Arctic Report Card, which revealed that annual surface air temperatures in the Arctic this year were the second-warmest on record since 1900.

“'Our observations now show that the Arctic tundra, which is experiencing warming and increased wildfire, is now emitting more carbon than it stores, which will worsen climate change impacts,' said Rick Spinrad, a Noaa administrator.

"The report, led by scientists from the Woodwell Climate Research Center in Falmouth, Massachusetts, found that the Arctic is warming faster than the global average for the 11th year in a row.

"Currently, it is warming at up to four times the global rate, the authors found.

"Climate warming has dual effects on the Arctic. While it stimulates plant productivity and growth, which remove carbon dioxide from the atmosphere, it also leads to increased surface air temperatures that cause permafrost to thaw.

"When permafrost thaws, carbon trapped in the frozen soil is decomposed by microbes and released into the atmosphere as carbon dioxide and methane, two potent greenhouse gases.

"'We need accurate, holistic and comprehensive knowledge of how climate changes will affect the amount of carbon the Arctic is taking up and storing, and how much it’s releasing back into the atmosphere, in order to effectively address this crisis,' said Dr Sue Natali, a scientist at the Woodwell Center who contributed to the research. 'This report represents a critical step toward quantifying these emissions at scale.'

"Human-caused climate change is also intensifying high-latitude wildfires, which have increased in burned area, intensity and associated carbon emissions.

"Wildfires not only combust vegetation and soil organic matter, releasing carbon into the atmosphere, but they also strip away insulating soil layers, accelerating long-term permafrost thaw and its associated carbon emissions.

"'In recent years, we’ve seen how increasing fire activity from climate change threatens both communities and the carbon stored in permafrost, but now we’re beginning to be able to measure the cumulative impact to the atmosphere, and it’s significant,' said Dr Brendan Rogers, Woodwell Climate scientist and report contributor."

https://www.theguardian.com/world/2024/dec/10/arctic-tundra-carbon-shift?utm_source=firefox-newtab-en-us

#GlobalWarming #GlobalBurning #2024ArcticReportCard #ArcticWarming #Tundra #PermafrostThaw #GreenhouseGases #Methane #Microbes #ClimateCrisis #ClimateChange

The role of #RossbyWaves in polar #weather and #climate

by Tim Woollings, et al.

13 Jan 2023

Abstract:

"Recent Arctic warming has fuelled interest in the weather and climate of the polar regions and how this interacts with lower latitudes. Several interesting theories of polar-midlatitude linkages involve Rossby wave propagation as a key process even though the meridional gradient in planetary vorticity, crucial for these waves, is weak at high latitudes. Here we review some basic theory and suggest that Rossby waves can indeed explain some features of polar variability, especially when relative vorticity gradients are present.

"We suggest that large-scale polar flow can be conceptualised as a mix of geostrophic turbulence and Rossby wave propagation, as in the midlatitudes, but with the balance tipped further in favour of turbulent flow. Hence, isolated vortices often dominate but some wavelike features remain. As an example, quasi-stationary or weakly westward-propagating subpolar anomalies emerge from statistical analysis of observed data, and these are consistent with some role for wave propagation. The noted persistence of polar cyclones and anticyclones is attributed in part to the weakened effects of wave dispersion, the mechanism responsible for the decay of midlatitude anomalies in downstream development. We also suggest that the vortex-dominated nature of polar dynamics encourages the emergence of annular mode structures in principal component analyses of extratropical circulation.

"Finally, we consider how Rossby waves may be triggered from high latitudes. The linear mechanisms known to balance localised heating at lower latitudes are shown to be less efficient in the polar regions. Instead, we suggest the direct response to sea ice loss often manifests as a heat low, with radiative cooling balancing the heating. If the relative vorticity gradient is favourable this does have the potential to trigger a Rossby wave response, although this will often be weak compared to waves forced from lower latitudes."

#Copernicus #Weather #ClimateChange #ArcticMelt #ArcticWarming #GlobalWarming #GlobalHotSpots

#INDIA #ARCTICEX[PEDITION; OBJECTIVES Examine impacts of #Arcticwarming on global #climate/Investigate correlations between #Arcticsea #ice reduction and extreme #weather events in #India/Enhance comprehension of intensification of cyclones in #ArabianSea.
https://indianf.com/arctic-winter-expedition-india/#:~:text=ARCTIC%20WINTER%20EX,the%20Arabian%20Sea.

#Inuit group calls for bigger role in #ClimateAction

The Inuit Circumpolar Council is seeking to bring the effects of #Arctic #CimateChange on their communities to the attention of participants of the #COP28 conference in Dubai

Alaska Beacon, via Indian Country Today
Dec 8, 2023

"The #InuitCircumpolarCouncil includes representatives in #Alaska, #Canada, #Greenland and #Russia. It is one of the six international #Indigenous organizations that have decision-making power at the eight-nation #ArcticCouncil. The Inuit Circumpolar Council has a COP 28 delegation, to include Alaska members.

"One key issue highlighted in the position paper is the Loss and Damage Fund that was created at last year’s COP 27 held in Egypt. As it is structured now, the fund is focused on helping poorer nations in the #GlobalSouth address the impacts of climate change.

"That leaves a big gap, said Inuit Circumpolar Chair #SaraOlsvig of Greenland.

"'This means that as it is structured now, Inuit and other Arctic #IndigenousPeoples will not have access to the fund, although we are among those most impacted by climate change,' Olsvig said by email. Given the rapid rate of Arctic warming and associated effects, 'the inclusion of Inuit in any policy and decision-making is of great importance,' she said."

#ClimateJustice #Yupik #Chukchi #Chukotka #Kalaallit #Inughuit #Iñupiat #Tunumiit #Nunatsiavut #Nunavik #Inuvialuit #ArcticIndigenousPeoples #GlobalWarming #ArcticWarming

"But to properly understand the pace and force of what’s to come, we should instead focus on organisms too small to be seen with the naked eye. These single-celled microbes are both the watchkeepers and arch-agitators of the Arctic’s demise."

https://theconversation.com/the-melting-arctic-is-a-crime-scene-the-microbes-i-study-have-long-warned-us-of-this-catastrophe-but-they-are-also-driving-it-207785

#ArcticWarming #BloodSnow #ClimateChange

Global News BC: Arctic will likely see summer free of ice by 2030, research says https://globalnews.ca/news/9749479/research-summer-ice-free-arctic-2030/ #globalnews #britishcolumbia #news #EnvironmentandClimateChangeCanada #GreenhouseGasEmissions #EnvironmentCanada #ice-freesummer #ArcticWarming #ClimateChange #GlobalWarming #OceansWarming #Environment #ArcticOcean #ArcticIce #ice-free #Science #Weather #Canada #Arctic #World #2030

Deadly Heatwaves and Freezing Blizzards – Global Warming Causes Both
#World #PlanetEarth #Earth #Environment #ClimateChange #ArcticBlast #ArcticWarming #GlobalWarming #MeltingArctic #PolarVortex #WinterStorm #HeatWaves #FreezingBlizzards
https://the-14.com/deadly-heatwaves-and-freezing-blizzards-global-warming-causes-both/

#Earth & #Energy

https://futurism.com/this-animation-shows-what-earth-would-look-like-if-all-the-ice-melted/

This #Animation #Shows What #Earth Would Look Like if All The #Ice #Melted
Here’s a virtual tour of what all the continents would look like without any ice.

#arcticwarming #globalwarming

#arcticwarming

Client Info