Alexandra Veremeeva

Noctilucent clouds are my favourite☺️

SharePic: SharePic: Photo of the research icebreaker Polarstern intentionally frozen on an ice floe with the text: 30 Years, 30 Stories / How the MOSAiC Expedition is helping us understand the Arctic

Why embed a research vessel in Arctic ice?
To study the climate where it is changing most rapidly.
#MOSAiC was the largest Arctic expedition to date.
Led by @awi.de, with contributions from @dlr-en.bsky.social, @geomarkiel.bsky.social and @gfz.bsky.social.

Learn more: t1p.de/4fwt0 #Helmholtz30

Fusing Regional and Global Datasets to Develop a Composite Land Cover Product Across High Latitudes Abstract. Rapid warming across the Arctic is the primary driver of widespread permafrost thaw, with far-reaching consequences for local ecosystem resilience, the regional carbon budget, and the global...

If you need land cover datasets for the Arctic-boreal region, here is one great option for you at 1-km resolution: essd.copernicus.org/preprints/es.... It merges several regional products and separates dozens of key land cover types (e.g. bogs, fens, pine forest, spruce forest). 🌎🏞🏔

Illustration of a Greenlandic landscape, showing in the foreground Rhododendron lapponicum on a cliff, with sea ice and icebergs in the background. Illustration by Alberto S. Ballesteros (@asbillustration.bsky.social)

🌸Plant diversity dynamics over space and time in a warming Arctic 🌸

Our new study @nature.com analysed plant diversity change in >2000 tundra plots over 4 decades. We found that plants changed unevenly, mostly driven by warming and biotic interactions.

www.nature.com/articles/s41...

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Frontiers | The changing face of the Arctic: four decades of greening and implications for tundra ecosystems

I'm happy to share "The changing face of the Arctic: 4 decades of greening and implications for tundra ecosystems". Observations since 2020 provides strong evidence that Arctic have entered a state without historic precedent on timescales approaching a millennium www.frontiersin.org/journals/env...

📢 The final ArcticDEM & REMA release is here - and it might be the last. Funding cuts put vital polar data at risk. Help us rally support: take the survey! 🔗https://z.umn.edu/pgc-dem-survey #PolarScience #SavePolarData

A new habitat map of the Lena Delta in Arctic Siberia based on field and remote sensing datasets Abstract. The Lena Delta is the largest river delta in the Arctic (about 30 000 km2) and prone to rapid changes due to climate warming, associated cryosphere loss, and ecological shifts. The delta is ...

We used extensive field data and remote sensing to create a new comprehensive #habitat map for the #permafrost dominated Lena Delta, the largest #arctic river delta, located in northeastern Siberia. doi.org/10.5194/essd...

Happy Earth Day! I think in our daily routine, we often don't realize what an incredible world we live in — and today is a great opportunity to remind ourselves of that 😊. The Earth is our Home💚🌍💚

A note about what is going on. No NOAA sites are going dark right now, but NOAA has until July 31st to move the websites in question to a different host platform.

And who knows if there is funding for that or what the options are. We are nowhere near out of the woods.

Next generation Arctic vegetation maps: Aboveground plant biomass and woody dominance mapped at 30 m resolution across the tundra biome The Arctic is warming faster than anywhere else on Earth, placing tundra ecosystems at the forefront of global climate change. Plant biomass is a fund…

First circumpolar maps of aboveground tundra biomass at 30 m resolution 💪 www.sciencedirect.com/science/arti...

These new estimates show that in total tundra plants (above-and belowground) store around 8 Pg C while the upper 30 cm soils store ca 53 Pg C.

Rapid Changes in Retrogressive Thaw Slump Dynamics in the Russian High Arctic Based on Very High‐Resolution Remote Sensing We mapped >3,400 Retrogressive Thaw Slump (RTS) objects at six Russian Arctic sites using very high resolution satellite data from 2011 to 2020 Total RTS area changes ranged from −5% to +2,700% w...

Retrogressive thaw slumps form due to rapid thaw of ice-rich #permafrost. While increases in thaw slump numbers & areas have been found in NW Canada before, we now show that also the Russian High Arctic is impacted by accelerating thaw slump formation: agupubs.onlinelibrary.wiley.com/doi/full/10....

Commitment to Advance Excellence and Inclusion in the Earth and Space Sciences Scholarly Publications We affirm our commitment to publishing evidence-based Earth and space sciences that is free from political interference We will continue to foster a diverse, equitable, and inclusive scientific c...

‼️ New #AGU editorial ‼️

Editors-in-Chief reaffirm their commitment to publishing evidence-based Earth & space science, upholding integrity & inclusivity, and resisting censorship 🌍

🔗: agupubs.onlinelibrary.wiley.com/doi/full/10....

#ScienceIntegrity #EarthScience #ScienceMatters

Our study ‘The #global #human impact on #biodiversity’ is out in @nature.com: www.nature.com/articles/s41...

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Unprecedented synthesis of >2000 studies led by @francoiskeck.bsky.social shows humans are not only shrinking species numbers—but reshaping entire communities across the planet.
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Great to see the new permafrost monitoring sites, one of which is Bayelva long-term observatory in Svalbard operated by AWI and Julia Boike's team, are officially accepted to the WMO CryoNetCluster! www.awi.de/en/science/g...

Curious about climate patterns? The new ERA Explorer app lets you compare 85 years of climate data worldwide. Analyse climatological averages at any map point or explore month-by-month data.Dive deeper with ERA Explorer! era-explorer.climate.copernicus.eu?lat=50.86&ln...
#C3S #beautifuldata

Spring is here again despite everything💚

Letter of Concern Regarding Recent Federal Actions and Their Impact on U.S. Arctic Research We, members of the U.S. Arctic research community and those who benefit from this work, write to express deep concern over recent executive actions that are disrupting federally funded research and un...

Read and sign if you care about US Arctic research docs.google.com/forms/d/e/1F...

Looking forward to this workshop on Arctic methane! Registration deadline is April 15th.

A Polar Bear sleeping on a tiny iceberg off Norway's Svalbard Archipelago.

There Is NO Plan B! 😢

A sleeping Polar Bear on an iceberg off Norway's Svalbard Archipelago.

The ice caps of Svalbard, Norway are melting at an alarming rate due to climate change, says NASA. This melting is exposing methane-rich permafrost and glaciers.

🎦 Credit: Nima Sarikhani