Dr. César Cardenas
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cesarant77.bsky.social
Dr. César Cardenas
@cesarant77.bsky.social
Dad, diver, PhD in marine biology, Antarctic researcher at INACH & MilenioBASE Chair of SC-CAMLR. UACh & VUW alumni, Magállanico, a happy lad!
Here we are, back in Hobart for one month of meetings ! Fish stock assessment WG first, then Scientific Committee and Commission!
De regreso en Hobart para un largo mes de reuniones ! Primero la reunión de grupo de evaluación de stock y luego Comité Científico y Comisión !
October 7, 2025 at 3:35 AM
Reposted by Dr. César Cardenas
The infamous ship Endurance, which sank in #Antarctica in 1915, wasn't as well built for a polar voyage as previously thought — and its owner was likely aware of its shortcomings via @livescience.com

www.livescience.com/archaeology/...
Shackleton's infamous ship 'Endurance clearly had several structural deficiencies,' new analysis reveals
Ernest Shackleton's ship, the Endurance, infamously sank in Antarctica — and now a new study finds that it had known flaws.
www.livescience.com
October 6, 2025 at 11:10 PM
Reposted by Dr. César Cardenas
Stratospheric temperatures in Antarctica are spiking, which could see strange weather unfold across the southern hemisphere in the coming months
Atmospheric chaos has sent temperatures soaring in Antarctica
Stratospheric temperatures in Antarctica are spiking, which could see strange weather unfold across the southern hemisphere in the coming months
www.newscientist.com
October 3, 2025 at 10:24 AM
Reposted by Dr. César Cardenas
🧊Our researchers have just finished analysing ancient Antarctic ice spanning 1.2 million years of climate history!

The Beyond EPICA project extends the ice core climate record by 400,000 years, helping us to understand long-term climate patterns and improve future predictions.
October 2, 2025 at 12:42 PM
Reposted by Dr. César Cardenas
With emissions still rising 📈 and the catastrophic consequences 🔥 becoming ever clearer, geoengineering is getting ever more tempting 🧪

But a review has concluded that the main methods proposed to save polar ice 🧊 are not doable or won't work

www.newscientist.com/article/2495...
Geoengineering is not going to save the poles from climate change
A review of the five main methods proposed for cooling down the poles or slowing the loss of ice concludes they are all wildly impractical, wouldn't work, or both
www.newscientist.com
September 9, 2025 at 9:42 AM
Adjusting the management of the Antarctic krill fishery to meet the challenges of the 21st century | PNAS www.pnas.org/doi/10.1073/...
Adjusting the management of the Antarctic krill fishery to meet the challenges of the 21st century | PNAS
Antarctic krill (Euphausia superba) is the central prey species in the Southern Ocean food web, supporting the largest and fastest-growing fishery ...
www.pnas.org
September 9, 2025 at 12:21 PM
Reposted by Dr. César Cardenas
The rate of #Antarctic sea ice extent growth has increased over the last few weeks as we approach this year's annual maximum (austral winter). No new records will be set this year, thought current ice concentration remains quite low in several regions.

+ More at zacklabe.com/antarctic-se...
September 6, 2025 at 2:21 PM
Reposted by Dr. César Cardenas
🌊The Southern Ocean is warming, is productivity changing? New paper by Liniger et al. uses the nitrate sensors on 274 SOCCOM/BGC-Argo floats to compute annual NCP. It has increased significantly over the past two decades.
@mbarinews.bsky.social @soccomproject.bsky.social @bgc-argo.bsky.social
August 12, 2025 at 11:06 PM
Reposted by Dr. César Cardenas
🌊❄️🧪 🇦🇶 Please share:

We have learned that the National Science Foundation is moving ahead with plans to decommission the U.S. Research Vessel/Ice Breaker Nathaniel B. Palmer this October.

If you care about Antarctic research, please read on (1/n)
July 25, 2025 at 7:50 PM
Reposted by Dr. César Cardenas
Scientists map Antarctic seafloor canyons to help predict climate breakdown : www.theguardian.com/environment/...
Scientists map Antarctic seafloor canyons to help predict climate breakdown
Study suggests the underwater valleys have a major impact on ice loss and ocean circulation
www.theguardian.com
July 31, 2025 at 3:39 PM
Reposted by Dr. César Cardenas
How long tubes of mud could reveal how Antarctica is changing www.bbc.com/news/article... #Antarctica #Polar #Climate
Antarctic Ocean secrets hidden in layers of seafloor mud
How long tubes of mud - drilled out of the Antarctic seafloor - could reveal how the frozen continent is changing.
www.bbc.com
August 19, 2025 at 6:56 AM
Inaugural plenary lecture by Prof. Gary Wilson @scar-antarctic.bsky.social at the XIV International Symposium on Antarctic Earth Sciences , Punta Arenas, Chile #ISAES2025 @inach_gob
August 18, 2025 at 2:31 PM
Reposted by Dr. César Cardenas
📉 Antarctic sea ice has hit record lows between 2022 and 2025.

A new summary on the Antarctic Environments Portal explores the causes, consequences, and signs of a lasting regime shift in the sea ice system.

Full article: doi.org/10.48361/KVK...
August 5, 2025 at 3:08 PM
Reposted by Dr. César Cardenas
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
August 2, 2025 at 12:15 PM
Reposted by Dr. César Cardenas
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
July 14, 2025 at 7:02 PM
Reposted by Dr. César Cardenas
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?
June 20, 2025 at 3:56 PM
Reposted by Dr. César Cardenas
📢 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...
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.
www.nature.com
June 18, 2025 at 12:14 PM
Reposted by Dr. César Cardenas
#SHOA de la #Armada de #Chile apoyó despliegue del perfilador submarino del @inach_gob en #strecho de Magallanes
infogate.cl/2025/06/shoa...
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.
infogate.cl
June 18, 2025 at 12:56 AM
1020 am Punta Arenas
June 14, 2025 at 10:52 PM
Reposted by Dr. César Cardenas
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...
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.
www.nature.com
June 13, 2025 at 11:39 AM
Reposted by Dr. César Cardenas
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...
June 11, 2025 at 2:25 PM
Reposted by Dr. César Cardenas
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.
June 11, 2025 at 12:31 PM
Reposted by Dr. César Cardenas
🧵 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...
Geopolitical competition straining peace and environmental protection in Antarctica, MPs find in new report   - Committees - UK Parliament
Report: The UK and the Antarctic environment
committees.parliament.uk
June 9, 2025 at 9:38 PM