Dr. César Cardenas

Map showing the Antarctic anomaly of the July 2025 sea-ice concentration relative to the mean July ice concentration in 1981-2010. Especially, the sea ice around the Antarctic Peninsula, and in the King Haakon VII sea, shows large areas of negative anomaly (red colour). Source data is OSI SAF sea-ice concentration CDR v3.0.

The line graph displays the monthly sea-ice extent in the Antarctic for July from 1979 to 2025. In 2025, the July extent ranked as the third lowest on record. Source data is OSI SAF sea-ice index.

Disregarding the extreme and record-low sea-ice extent in Antarctic the last two years, this year's July extent is exceptionally low, ranking as the 3rd lowest on record.

The July extent over the last four years differs significantly from that of the previous four decades.

@osi-saf.eumetsat.int

Groundbreaking insights about rivers beneath the West Antarctic Ice Sheet, and their role in Ross Ice Shelf melt, have been uncovered. SWAIS2C Co-Chief Scientist Huw Horgan led the team observing this water entering the ocean cavity at KIS2, on the grounding zone of the WAIS 👉https://bit.ly/44FFniV

Warming stripes for Japan

Warming stripes for Australia

Warming stripes for New Zealand

Warming stripes for Papua New Guinea

It's already #ShowYourStripes day in many places like New Zealand, Australia, Japan and Papua New Guinea.

All these countries are warming rapidly. Visit www.ShowYourStripes.info to find your warming stripes with 4 different designs.

Start a climate conversation online or with friends and family?

Sea ice controls net ocean uptake of carbon dioxide by regulating wintertime stratification - Communications Earth & Environment Interannual variability of ocean uptake of carbon dioxide is governed by winter sea ice cover, according to analysis of carbonate chemistry observations along the West Antarctic Peninsula.

📢 New paper alert! 📢

New insight into how sea ice controls the ocean uptake of carbon dioxide around Antarctica, obtained from the unique year-round Rothera Time Series.

Delighted to be part of this study, led by the very excellent Elise Droste.

🧪❄️🥼🌊

www.nature.com/articles/s43...

SHOA apoyó despliegue del perfilador submarino del INACH en estrecho de Magallanes - INFOGATE El SHOA apoyó al INACH en el despliegue del perfilador submarino Glider “SeaExplorer” que busca fortalece la observación oceanográfica.

#SHOA de la #Armada de #Chile apoyó despliegue del perfilador submarino del @inach_gob en #strecho de Magallanes
infogate.cl/2025/06/shoa...

1020 am Punta Arenas

Impact of glacial meltwater on phytoplankton biomass along the Western Antarctic Peninsula - Communications Earth & Environment Increased glacial melt is strongly correlated with phytoplankton chlorophyll-a, according to analysis of remote sensing, reanalysis products, and field observations from the West Antarctic Peninsula.

Check out our latest and greatest on Antarctic glacial melt and its impact on marine life, led by the awesome Jack Pan!

Perfectly-timed publication, given that I'm currently in the Antarctic gathering more data on these things.....!!

www.nature.com/articles/s43...

The last 15 years have seen a big, unexpected drop in the Emperor penguin population in Antarctica 🐧

BAS Wildlife from Space lead / cartographer / penguin expert @ptfretwell.bsky.social explains how this research was conducted, and what seems to be going on ⬇️

www.youtube.com/watch?v=Cjgr...

Orthographic map showing 2-m air temperature anomalies in May 2025 relative to a 1981-2010 baseline. This visualization shows North and South America. Most areas are warmer than average.

Orthographic map showing 2-m air temperature anomalies in May 2025 relative to a 1981-2010 baseline using ERA5 data. This visualization shows Africa, Europe, and western Asia. Most areas are warmer than average, especially over southwestern Asia.

Orthographic map showing 2-m air temperature anomalies in May 2025 relative to a 1981-2010 baseline using ERA5 data. This visualization shows Australia, Antarctica, and Asia. Most areas are warmer than average, except for parts of Australia and Antarctica.

Last month was the 2nd hottest May on record globally (after just last year and with 2020 in 3rd). Some of the largest warm anomalies were in the Middle East, and it was notably cooler over India.

Summary of the month at climate.copernicus.eu/surface-air-... with @copernicusecmwf.bsky.social data.

Geopolitical competition straining peace and environmental protection in Antarctica, MPs find in new report   - Committees - UK Parliament Report: The UK and the Antarctic environment

🧵 The House of Commons Environmental Audit Committee has published its report on its inquiry into "The UK and the Antarctic Environment".
committees.parliament.uk/committee/62...

👏🏼👏🏼👏🏼
We had them here at INACH before they departed with the SDA !

❄️ Apply Now: XIV ISAES SCAR Travel Awards for Early Career Researchers! ✈️

SCAR is offering travel grants of up to US$2,000 to help ECRs cover travel, accommodation, and registration costs.

🗓 Application Deadline: 30 June 2025
▶️ scar.org/scar-news/is...

The 2025 SCAR Life Sciences Group Fellowship is now open for applications!

The fellowship supports EMCRs with $10,000/year to contribute to SCAR’s life sciences work, attend meetings & grow into leadership roles within the Antarctic research community.

Apply by 8 July.
scar.org/scar-news/20...

With such short days, the Antarctic sunrises and sunsets start to merge into one... yesterday's was spectacular....

Another week or so, and the sun will not rise at all.

🧪🥼❄️🌊

❓ How can FMRI meet Net Zero goals, boost global collaboration & keep continuity in innovation?

Thanks to @krhendry.bsky.social from @bas.ac.uk for tackling these big questions from the community & sharing why autonomous tech matters for ocean science

🎧 Episode 4 is live - podcast link in bio ☝🏾

Call for applications: APECS and @soosocean.bsky.social are seeking an Early Career Researcher to join the Southern Ocean Indian Sector Regional Working Group.

Apply by 22 May: www.soos.aq/activities/r...

Warming stripes for deep ocean to upper stratosphere

The Warming Stripes have now been extended downwards into the ocean and upwards into the stratosphere!

Collaborative paper which tells the story of how the stripes were developed, and discusses their extension across the Earth system, is now available in BAMS: journals.ametsoc.org/view/journal...

El manejo ecosistémico de los recursos marinos en el océano Austral El desafío es, entonces, retomar el trabajo conjunto entre todos los países que integran la CCRVMA junto a la industria y las ONG, para redoblar esfuerzos que permitan definir una nueva estrategia de ...

www.elmostrador.cl/noticias/opi...

Cover of book "Antarctica and the Earth System"

New book!! 📕

Antarctica is intimately connected to the rest of our planet, affecting climate, ecosystems, cultures and society. Our new book draws together international experts to explore this influence, and to understand what humans are doing to Antarctica (1/n)
www.routledge.com/Antarctica-a...

Disparate estimates of intrinsic productivity for Antarctic krill across small spatial scales, under a rapidly changing ocean. https://www.biorxiv.org/content/10.1101/2025.03.27.645857v1

Now that's a graduation📜🙌

Three JCU students had a graduation ceremony of a different kind last week when they received their honours in East Antarctica!

Read more about their expedition as part of the Denman Marine Voyage👉https://shorturl.at/kxyPc

@janstrugnell.bsky.social @arcsaef.bsky.social

18 maps showing decadal average temperature changes since 1850 to present, getting redder in recent decades

Mapping changes in temperature: every decade from the 1850s to 2020s

Buen día #PuntaArenas

🔴The #StateOfClimate report, released today, reveals key climate change indicators again reached record levels in 2024.

Check out the full report: wmo.int/publication-...

Some US Scientists Stick with the IPCC Despite the Administration Pulling Out of International Climate Work - Inside Climate News A handful of U.S. researchers joined a critical meeting on climate and cities this week in Japan. “For me, this process is so important that if I had to self-fund, I would,” said one.

As the IPCC looks for scientific authors to work on a new climate report, U.S. scientists consider their options in a challenging, anti-science political environment.

A practical framework to evaluate the feasibility of incentive-based approaches to reduce bycatch of marine mammals and other protected species Fisheries bycatch is one of the biggest threats to marine mammal populations and an important conservation and management problem worldwide. Conventio…

www.sciencedirect.com/science/arti...

🌎🧪🦑🐠

Twenty‐First‐Century Environmental Change Decreases Habitat Overlap of Antarctic Toothfish (Dissostichus mawsoni) and Its Prey

📄

La chilena que circunnavegará la Antártica a bordo de rompehielos científico por 70 días “La experiencia me parece increíble e impensada. Estoy muy agradecida de esta oportunidad laboral, ya que, sin duda, viene acompañada de un crecimiento personal”, comenta la especialista, integrante d...

🧊 “La experiencia me parece increíble e impensada. Estoy muy agradecida de esta oportunidad laboral, ya que, sin duda, viene acompañada de un crecimiento personal”, comenta la especialista, integrante del Instituto Antártico Chileno (INACH).

🚨 Applications for the 2025 SCAR Fellowships are now open! 🚨

With up to $15,000 in funding and 4–5 fellowships available, this is your chance to collaborate internationally and advance your research.

➡️ Apply by 31 July 2025
scar.org/scar-news/20...