Xiaoming Xu

Available positions All vacant positions at UNIS are announced on JobbNorge, and applications must be sent through the JobbNorge system.

❄️ Want to do a PhD in the Arctic?

‼️ The University Centre in Svalbard (UNIS) is hiring 5 PhD candidates across Arctic science fields!

🧊 Work at the frontlines of climate & cryosphere research
📍 Svalbard, Norway

🔗 www.unis.no/about/positi...

New job! Please RP! 🥼🧪 ⚒️

Laboratory Manager (gr8, permanent) @oxfordgeography.bsky.social

Leading the Geolabs, with cutting edge facilities in water #geochemistry, #ecosystem science, #eDNA, luminescence

Apply by 13 March or please get in touch with any Qs

my.corehr.com/pls/uoxrecru...

Image description: A laptop in the background. Text reads: ''How to get a European postdoctoral grant,' scheduled for Wednesday, 11 March 2026 at 17:00 CET. Includes a 'REGISTER NOW' button and the EGU logo."

Interested in getting a European postdoctoral #grant, but hesitant to apply? This #webinar is for you!
Together with Sílvia Poblador and Elsa Abs, they will share the best application tips!

💻: How to get a European postdoctoral grant
🕔: Wednesday, 11 Mars 2026 @17:00 CET
🔗 : egu.eu/6WAGBT

We have several open positions in the field of soil C cycling in #permafrost ecosystems @uni-hamburg.de

Technician/research associate (fate of permafrost C):
shorturl.at/xEiG7
Postdoc (land-surface modeling & C-climate feedbacks):
shorturl.at/pjY0K
PhD (microbial GHG turnover):
shorturl.at/hfhwX

If you are interested in studying participatory cryosphere science or permafrost science feel free to reach out about these opportunities. Will be recirculating in early January. Also for international scholars there's a new funding opportunity for postdocs where these projects could apply as well!

Postdoc vacancy: Microbial dormancy in the cryosphere
@erc.europa.eu #ERC_SIESTA
📢 PLEASE RT

🧬 Single cell microbial activity measurements, flow cytometry, cell sorting, omics, ecological interpretation

☀️ Marseille, France
‼️ Apply ASAP & before 7 Nov
Link: emploi.cnrs.fr/Offres/CDD/U...

Dr Toni Lewkowicz launching the glossary!

IT’S ALIVE! The Glossary of Permafrost Science and Engineering is released and available to all for free! Spread the news! You can download it here: canadianpermafrostassociation.ca/glossary-of-...

Please share! I'm looking for a postdoc. The position is to lead one of the following projects: 1) regulation of plant specialized metabolism by cell fate, or 2) foliar embryogenesis in the succulent plant Kalanchoe.

Learn more abt projects: cxli233.github.io/cxLi_lab/res...

Witnessing the rapid and extensive thawing of permafrost in Svalbard is truly impressive but deeply concerning

The background is a photo taken on September 29, 2024, two days after Hurricane Helene; the image shows the receding Swannanoa River along Highway 70 in Asheville, North Carolina. Overlaid text on the photo reads, “State of the Climate in 2024. Special Supplement to the Bulletin of the American Meteorological Society, Vol. 106, No. 8, August 2025”. Photo credit: Deborah J. Misch, former Graphics team member for the BAMS State of the Climate.

▶️ UPDATE: The 2024 #BulletinAMS State of the Climate Assessment is now available! Check out the highlights in our press release: bit.ly/45tFO0g

#StateoftheClimate #StateoftheClimate2024

This map from @cmshintani.bsky.social shows the permafrost extant across the boreal forest ecoregion.

Read more about the connection between boreal wildfires and permafrost at www.woodwellclimate.org/connection-b...

I have a fully funded PhD position open for start in Jan or May 2026. Field work in peatlands of the Northwest Territories, with lab work to understand potential downstream mobilization of carbon, nutrients, mercury after thaw or wildfire. Reach out for more information, and please send on!

Climate mitigation and adaptation measures are not costs. They are investments.

The true costs occur when mitigation fails and adaptation is too slow so we suffer from continually worsening extreme weather events like heatwaves and floods.

Invest now to reduce costs in future.

Our Foundation Model project 3D-ABC, focusing on quantifying global above and below ground carbon stocks, now has a nice website: www.3d-abc.ai
In first downstream tasks we will look into Amazon #rainforest height and biomass and arctic-boreal #permafrost soil carbon stocks.

The call for our 2026 Postdoc Cohort is now open. We offer 4 full-time positions. Apply until August 24th. hifmb.de/jobs
Please spread the word.
#postdoc #jobsinscience #marinebiodiversity #antarctica
@awi.de @hillebr1.bsky.social @ibaums.bsky.social @thilogross.bsky.social @merenbey.bsky.social 🦑

Indicators of Global Climate Change 2024: annual update of key indicators of the state of the climate system and human influence Abstract. In a rapidly changing climate, evidence-based decision-making benefits from up-to-date and timely information. Here we compile monitoring datasets (published at https://doi.org/10.5281/zenodo.15639576; Smith et al., 2025a) to produce updated estimates for key indicators of the state of the climate system: net emissions of greenhouse gases and short-lived climate forcers, greenhouse gas concentrations, radiative forcing, the Earth's energy imbalance, surface temperature changes, warming attributed to human activities, the remaining carbon budget, and estimates of global temperature extremes. This year, we additionally include indicators for sea-level rise and land precipitation change. We follow methods as closely as possible to those used in the IPCC Sixth Assessment Report (AR6) Working Group One report. The indicators show that human activities are increasing the Earth's energy imbalance and driving faster sea-level rise compared to the AR6 assessment. For the 2015–2024 decade average, observed warming relative to 1850–1900 was 1.24 [1.11 to 1.35] °C, of which 1.22 [1.0 to 1.5] °C was human-induced. The 2024-observed best estimate of global surface temperature (1.52 °C) is well above the best estimate of human-caused warming (1.36 °C). However, the 2024 observed warming can still be regarded as a typical year, considering the human-induced warming level and the state of internal variability associated with the phase of El Niño and Atlantic variability. Human-induced warming has been increasing at a rate that is unprecedented in the instrumental record, reaching 0.27 [0.2–0.4] °C per decade over 2015–2024. This high rate of warming is caused by a combination of greenhouse gas emissions being at an all-time high of 53.6±5.2 Gt CO2e yr−1 over the last decade (2014–2023), as well as reductions in the strength of aerosol cooling. Despite this, there is evidence that the rate of increase in CO2 emissions over the last decade has slowed compared to the 2000s, and depending on societal choices, a continued series of these annual updates over the critical 2020s decade could track decreases or increases in the rate of the climatic changes presented here.

Our new paper updating key metrics in the IPCC is now out, and the news is grim:

⬆️ Human induced warming now at 1.36C
⬆️ Rate of warming now 0.27C / decade
⬆️ Sharp increase in Earth's energy imbalance
⬇️ Remaining 1.5C carbon budget only 130 GtCO2

essd.copernicus.org/...

Black, blue, gray and yellow stereographic map depicts permafrost extent and the boreal forest ecoregion in the circumpolar north. Text: Data: Gruber, S, 2012. Ecoregions 2017 Resolve

Our boreal fire team @woodwellclimate.bsky.social is in D.C. this week to discuss responses+solutions to address the severe northern #wildfires impacting people, animals, and ecosystems.

We'll be adding to this resource 🧵, so please let us know what you'd like to see.
(🗺️ by @cmshintani.bsky.social)

New paper! led by Josh Dean “Old carbon routed from land to the atmosphere by global river systems”
doi.org/10.1038/s415...

#radiocarbon in #rivers reveals the age of CO2 they release to the atmosphere.

An active leak of old carbon from land.
🧪⚒️
@joshfdean.bsky.social @oxuniearthsci.bsky.social

📣 Speakers announced!

We’re excited to share more info about our upcoming PYRN Fieldwork Webinar Series!

Steve’s talk on fieldwork challenges and planning: url.uk.m.mimecastprotect.com/s/s8wfC4k1pu...

Fieldwork panel Q&A featuring 5 amazing speakers: url.uk.m.mimecastprotect.com/s/9TL1C5l2qh...

How Climate Change Could Accelerate Coastal Erosion in Alaska | Cozzarelli Prize-Winning Research YouTube video by PNAS

Parts of Alaska are losing 10+ meters of coastline yearly, and this loss may accelerate over the next century.

Thanks @pnas.org for highlighting our work!

www.youtube.com/watch?v=tQCd...
www.pnas.org/doi/10.1073/...

The Permafrost Carbon Network: A Decade of Synthesis Science YouTube video by Woodwell Climate Research Center

📹 Learn about the synthesis #science the Permafrost Carbon Network is doing to connect data from individual experiments to help answer questions about change across the #Arctic.

@schaedelc.bsky.social explains: youtu.be/23kR6QPi6HI?...

📣Next up in the PYRN Webinar Series - Ground Ice in Canada!

🗓️April 3rd, 2025. 1PM EST (6PM GMT)

🗣️Brendan O’Neill

Brendan will be presenting on field and modelling studies of ground ice in Canada 🇨🇦

Register here: queensu.zoom.us/meeting/regi...

Amplified global heating risk due to climate and carbon cycle feedbacks 24.03.2025 - Global heating over this millennium could exceed previous estimates due to carbon cycle feedback loops. This is the conclusion of a new study by the Potsdam Institute for Climate Impact...

Even 'safe' #climate scenarios may overshoot 2°C warming: New PIK study shows feedback loops like #permafrost thaw could amplify global heating throughout this millennium. Paris agreement only possible with very low emissions + low climate sensitivity.
www.pik-potsdam.de/en/news/late...

Climate warming and wetting poses a severe threat to permafrost engineering stability on the Qinghai‒Xizang Plateau Permafrost underpins engineering in cold regions but is highly sensitive to climate change. The mechanisms linking climate warming, precipitation chan…

🌍🌡️🌧️Climate change is hitting the #QXP hard! Our new study reveals how warming & wetting are destabilizing permafrost, threatening infrastructure in this vulnerable region. 🚞🏚️Check it out in #ACCR！ www.sciencedirect.com/science/arti... #Permafrost #ClimateChange

Thawing permafrost causes ground to sink in cold regions More needs to be done to better understand rapidly changing Arctic landscapes that are sinking as climate-driven permafrost thaw penetrates deeper, according to new research by University of Alaska Fa...

“Permafrost thaw subsidence is important because it has major implications for society, the economy and the environment,” Zwieback said. “It threatens infrastructure such as homes, schools, roads and runways.”

Read more: www.uaf.edu/news/thawing...

Climate change in the polar regions of our warming world is threatening to transform many of its features, such as this icy tableau in the Fish Islands off the coast of the Antarctic Peninsula. There is still much to learn about these places before we know better what those changes may be.

A new special issue of Science highlights research on Earth’s frozen places—from the Arctic to the Antarctic—and how it’s changing due to climate change and the geopolitical challenges this important work faces.

Learn more: https://scim.ag/4jPYRID

A Collaborative and Scalable Geospatial Data Set for Arctic Retrogressive Thaw Slumps with Data Standards - Scientific Data Scientific Data - A Collaborative and Scalable Geospatial Data Set for Arctic Retrogressive Thaw Slumps with Data Standards

The databases for permafrost thaw features mapped with remote sensing are growing, allowing better training of deep learning models. New data paper on thaw slumps out by Yang et al: doi.org/10.1038/s415...

Ground Ice Map of Canada v. 2.0 planning is in the works. The map below will be significantly improved with this update. It will take a fair amount of time and is a side project due to other program commitments #permafrost #cdnsci

👏👏👏

New work: Permafrost carbon emissions need to be accurately projected in Earth System models for full consideration of the remaining global carbon budget www.nature.com/articles/s41...
Full press release:
permafrost.woodwellclimate.org/most-earth-s...