Discover and read the best of Twitter Threads about #antarctica

Most recents (24)

China Using Drones to Map And Survey #Antarctica…
Sun Yat-sen University falls ‘High Risk’ on @ASPI_org Def Tracker & is on the 🇺🇸 gov list of unverified institutions (export bans).
but, science
Read 4 tweets
Drones, Fitbits and AI, oh my: Happy #WorldPenguinDay! Come learn about how #NSFfunded researchers from @PointBlueConSci study Adélie penguins at one of the windiest locations on Earth. #takeoverNSF

📸: @ae_schmidty
Can you guess what an Adélie penguin 🐧 and a salmon 🐟 have in common? #WorldPenguinDay

📷Matthias Breiter

Both of these charismatic species exhibit what scientists call “natal philopatry,” which means they return to their birthplaces to breed!

Adélies often end up building their pebble nests very close to where they hatched. #takeoverNSF
Read 23 tweets
ICYMI we are witnessing, via satellite imagery, sudden collapse of key glacial fronts of @antarctica . This...
And here, we see Eastern @antarctica glacial collapse…
And further @antarctica glacial system calving and sudden melt…
Read 8 tweets
Huge congratulations to @Endurance_22 and @NatGeo for finding the wreck of #Shackleton’s #Endurance. The wreck is amazing but can we also talk about some of the #Antarctic sea floor creatures that now call it home! Add any others you spot to the thread! (1) ImageImage
Huge #Antarctic sea anemones (Hormathia or similar) dangle their tentacles in the icy water! All of the animals that I have spotted so far are filter feeding! (2) ImageImageImageImage
Sea squirts pump water in and out through their two syphons to collect plankton and marine snow (dead things and poo raining down from the surface). (3) ImageImage
Read 13 tweets
Australian Prime Minister @ScottMorrisonMP made the judgment that #China does not “share the same objectives as Australia does” in #Antarctica .
If he meant the objective of creating harmful political tension among parties or countries conducting scientific exploration on the continent, then he is right---#China does not intend to do that.
In 1984 when China sent its first fleet of science experts to the #Antarctica , Chinese leader Deng Xiaoping set out China’s mission as “to contribute to humanity’s peaceful use of Antarctica”, the principles of which #China has adhered to over the years.
Read 6 tweets
Good morning. Now is as good a time as any for an abbreviated (let's see!) tour of Antarctica's Vinson Massif. Follow me along if interested. Here we go...

#Antarctica #Vinson #SevenSummits
2. Getting to Antarctica is logistically challenging at the best of times. Right now, well, even more so. Following a negative PCR test result, first flight was Atlanta, USA - Santiago, Chile. Another COVID test upon arrival and quarantine for 24 hrs while awaiting results
3. Next flight: Santiago-Punta Arenas. PA is the launch point for departures to Union Glacier, Antarctica (our interim 'base' from where we would travel internally to the Vinson Massif).
Read 62 tweets
Yesterday I read a very important thread by @Jasonvj2005 about the #Thwaites glacier in #Antarctica.

The thread was in German, so I took the liberty to translate it. More people need to read it to understand where we stand.

Let's talk about it. And think about what to do. Image
The #Thwaites glacier in Antarctica is larger than #Czechia, #Austria and #Switzerland combined. It's already #melting and accounting for 4% of global sea level rise.

Now, researchers from the #American #Geophysical Union have found huge diagonal cracks across the ice shelf.
They're growing faster than ever before. The prediction: In the next five years, the ice mass could #collapse abruptly. What would that mean?

The ice shelf could disintegrate into countless icebergs, and the rest of the glacier will then flow into the sea 3x faster than before.
Read 11 tweets
We watched "Don't Look Up" last night -- dumb movie, but convinced me not to hold back inconvenient truths.
So here goes.
#Greenland The Danish Meteorological Institute says huge warming there is linked to #ClimateChange .
How much "warming?"
- The capital Nuuk hit 55 F this week -- average temp for this time = 22.5 F
- Further north in Qaanaaq temp topped 46 F -- normal is -4.2 F.
70% of Earth's freshwater is frozen, and #Greenland is the 2nd largest block of ice after #Antarctica. If it were to fully melt...
3/ sea levels would rise 23 feet.…
That would obliterate the homes, schools, workplaces of >10% of the U.S. population.…
Read 5 tweets
Daily Bookmarks to GAVNet 12/24/2021…
Marine heatwaves can decimate the oldest and youngest coral, raising concerns about the reproductive future of reefs…

#MarineHeatwaves, #CoralDistribution, #ReefEcosystems
Come for the Tool, Stay for the Exchange: Bootstrapping Liquidity in the Private Markets…

#CapitalFlow, #PrivateMarkets, #AssetClasses, #PortfolioDiversification, #bootstrapping, #liquidity
Read 15 tweets
Besides #GlobalWarming, another threat looms over the Thwaites glacier (aka #DoomsdayGlacier): Earth’s natural, internal heat. It has the potential to speed up the melting of this glacial mass! #ClimateChange…

(📸: Alfred-Wegener-Institut/Thomas Ronge) Image
Nestled at the heart of the West Antarctic Ice Sheet, the Thwaites glacier is hailed as a global threat due to its size. Its area is equivalent to the Indian state of #Karnataka's i.e., almost 192,000 sq km.

If it melts, it could submerge several coastal areas around the world!
Scientists have long suspected that the Earth’s natural heat comes in touch with the surface of this region.

This is because West #Antarctica is stacked on a tectonic mass that's just 17 to 25 km thick! In comparison, the East side is as thick as 40 km.
Read 6 tweets
Delighted to announce our new paper on #Antarctica + estimates of surface mass balance is finally out in @EGU_TC
A quick thread on what it means 1/…
Surface mass balance (#SMB) is the budget between snow fall and snow/ice loss by melt + runoff and evaporation at the surface. It's the only way #glaciers + #icesheets can gain #ice - it also needs to balance the loss from calving #icebergs.
#SMB is very difficult to measure on the ground, especially over as large an area as #Antarctica, so usually output from a regional #ClimateModel is used. We looked at data from #HIRHAM #MAR #RACMO #COSMOCLM + #MetUM - to see if they agreed
Read 18 tweets
TemperaturaGlobal en Julio estuvo 0,92°C🔥sobre promedio para el mismo mes entre 1951-80. AnomalíasCálidas en prácticamente en todo el mundo; temperaturas >5°C sobre típicos en #Antartica Occidental👇Julio2021 quedó entre los meses más cálidos registrados😬
Según @NASAGISS, Julio2021 fue el segundo mes de Julio más cálido registrado mientras q según @NOAA, Julio2021 superó récord previo por 0,01°C. Más allá de estas pequeñas diferencias en el ranking, la tendencia es clara👇
Influido por el verano boreal, Julio es normalmente el mes más cálido del año a nivel global🔥. Por lo tanto, Julio2021 fue probablemente el mes (o uno de los meses) más cálido(s) que hemos experimentado jamás los humanos. Altas temperaturas en Julio avivaron voraces incendios👇
Read 6 tweets
After college, I spent some time traveling and working, and improving my #sciart skills.
The first place I went was Amundsen–Scott South Pole Station in #Antarctica (the #southpole).
I worked as a dishwasher, met my future husband, and saw some pretty neat climate science! Amundsen–Scott South Pole S...
During the summer, most operations workers at #southpole live in "Summer camp" a half mile from station.
It is a cluster of Jamesway tents on the ice flat. Home sweet home!
The warmest day that summer was -9° F, and the coldest as I left was about -60° F. That is cold! Image
One of the coolest things down there is @uw_icecube IceCube Neutrino Observatory, doing some #neutrino #physics!

Sensors deep in the ice can catch neutrino interactions in ice (heavy water also works in mine shafts)!
Here's a nice #sciviz by Fermilab
Read 6 tweets
@Manglewood Here is a pic of stowaway Perce Blackborow on Shackleton's Endurance with Mrs. Chippy, the ship's cat.
@Manglewood In case people would like to read more about Shackleton's men and his expeditions, here's a shot of part of my polar shelf. Please buy/order at your local indie! @indiebound @IndieBookshopUK #Antarctica #Shackleton
@Manglewood Here's a stunning pic from much later in the expedition; the Endurance in mid-winter trapped in the ice. Struck from the original glass negative taken by the courageous and talented Frank Hurley, the expedition photographer.…
Read 3 tweets
Daily Bookmarks to GAVNet 06/16/2021…
How to Make Sense of Contradictory Science Papers…

#SciencePapers #contradiction #SenseMaking
College Didn’t Create Today’s Social Justice Warriors; Middle and High School Did.…

#SocialJustice #youth #SchoolCurricula #skills #content
Read 8 tweets
Daily Bookmarks to GAVNet 06/14/2021…
The Compton Pledge: Guaranteed Income--A Community's Vision for Freedom

New discovery shows human cells can write RNA sequences into DNA…

#RNASequencing #dna #HumanCells #PolymeraseBehavior
Read 8 tweets
World’s Largest #Iceberg—Nearly Seven Times The Size of Mumbai—Forms in #Antarctica…

(📸:NASA/Chris Larsen)
A giant slab of ice almost seven times the size of Mumbai city has sheared off from the frozen edge of #Antarctica into the Weddell Sea, thereby becoming the largest #IceBerg in the world, according to the European Space Agency.
The #IceBerg dubbed A-76, measures around 4320 sq km in size—that is 170 km long and 25 km wide. In comparison, Mumbai’s total area is 603.4 sq km, while India’s capital city Delhi occupies about 1484 sq km.

Read 9 tweets
#SeaLevel Rise Due to #Antarctica's Ice Sheet Melting 30% More than Previously Estimated: Study…

(📸: Jeremy Harbeck/NASA)
Amid a #pandemic, the #ClimateCrisis may appear a distant threat. But burgeoning scientific studies have continued to point at a riskier future with cascading impacts.

Among all, research suggests that the melting of the icy continent of the globe, #Antarctica, alone can create widespread devastating impact in the form of rising sea levels around the globe.

Read 9 tweets
Scientists Discover #Asteroid Impact from 430,000 Years Ago in #Antarctica…

(📸: Dr. Wayne Trivelpiece/NOAA NMFS SWFSC Antarctic Marine Living Resources (AMLR) Program) Image
The extra-terrestrial particles recovered on the summit of Walnumfjellet (WN) within the Sor Rondane Mountains, Queen Maud Land, East Antarctica, indicate an unusual touchdown event.
As per the study, a jet of melted and vaporised meteoritic material resulting from the atmospheric entry of an asteroid at least 100 metres in size reached the surface at high velocity. Image
Read 9 tweets
Daily Bookmarks to GAVNet 02/22/2021…
The Politics of a Second Gilded Age…

#inequality #politics
Congress' failure to extend the stimulus reveals a broken safety net, but a jobs guarantee could wipe out unemployment for good…

#GuaranteedEmployment #SafetyNet #EconomicStimulus #ModernMonetaryTheory
Read 10 tweets
Daily Bookmarks to GAVNet 02/14/2021…
Study identifies significance of atmospheric rivers for New Zealand…

#significance #rivers #NewZealand
Hospital Price Transparency Could Change The Face Of Medical Debt Collections, If Advocates Exploit It | Health Affairs…

#hospital #transparency #debt #medical #price
Read 10 tweets
Quite often, I receive questions like ‘is #Antarctica visible from the ISS?’ The answer is yes, it is!

The track of the ISS passes over all continents except Antarctica, but it is still visible!

📸 In the 1st photo, you can see the #AntarcticPeninsula, which is almost 1300 km
📸 The 2nd photo is the coast of #Pravda near the #DavisSea. This part of the mainland is more difficult to discern, as it is 1700 km away from the viewpoint in straight line, and white clouds easily merge with the snow and ice cover. The first Russian station called #Mirny.
📸 In the third photo, you can see the #EnderbyLand. On the coast of the #CosmonautsSea are the #Molodezhnaya polar stations (Russia) and #MountVechernaya (Republic of Belarus).
Read 4 tweets

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