Songs heard in Antarctic waters suggest endangered creatures are thriving, study says www.yahoo.com/news/songs-h...
#nature #environment #ocean #antarctic #species #marinlife
The animal is the largest, and one of the loudest, on the planet.
www.yahoo.comSongs heard in Antarctic waters suggest endangered creatures are thriving, study says www.yahoo.com/news/songs-h...
The animal is the largest, and one of the loudest, on the planet.
www.yahoo.comwww.miamiherald.com/news/nation-... Songs heard in Antarctic waters suggest endangered creatures are thriving, study says
Ocean currents threaten to collapse Antarctic ice shelves, study finds phys.org/news/2024-04...
A new study published in Nature Communications has revealed that the interplay between meandering ocean currents and the ocean floor induces upwelling velocity, transporting warm water to shallower de...
phys.org
Today in #Antarctic news....
Search for avian flu in the Antarctic expanded. :-(
#iceicebaby 🐧🇦🇶 #science #nature
Has bird flu already killed hundreds, if not thousands of penguins in Antarctica?
www.reuters.comWarming of Antarctic deep-sea waters contribute to sea level rise in North Atlantic, study finds phys.org/news/2024-04...
Analysis of mooring observations and hydrographic data suggest the Atlantic Meridional Overturning Circulation deep water limb in the North Atlantic has weakened. Two decades of continual observations...
phys.orgWhy Antarctic Sea Creatures Are So Different From Their Northern Counterparts laughingsquid.com/antarctic-se...
MinuteEarth explains why the underwater creatures of the Antarctic are biologically different from their northern counterparts.
laughingsquid.com
"Ocean currents threaten to collapse Antarctic ice shelves, study finds"
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A new study published in Nature Communications has revealed that the interplay between meandering ocean currents and the ocean floor induces upwelling velocity, transporting warm water to shallower de...
phys.org‘I’m a blue whale, I’m here’: researchers listen with delight to songs that hint at Antarctic resurgence www.theguardian.com/environment/...
Audio collected with underwater microphones suggests numbers at least stable after centuries of industrial whaling left only a few hundred alive
www.theguardian.comAs Antarctic Blue Ocean Approaches, Global Ocean Circulation System Weakens #GMOC #Cryosphere #SeaIce #Antarctic
Up until 2014, Antarctic Sea Ice Area exhibited a slow yearly increase. Then the system broke. Since then, there have been three years of record low sea ice and two years of very high sea ice; basically variability or whiplashing has more than doubled. The major problem for the global climate is that with record low sea ice formation and record low sea ice area circumventing Antarctica, there is much less dense water created from salt rejection as sea ice forms. Thus, less water sinks to the abyss, in fact over 30% less in the Weddell Sea; thus formation of Antarctica Bottom Water (AABW) is reduced about 15%. This slows the Global Meridional Overturning Circulation (Global MOC) and has profound effects on global climate stability. Very serious indeed. There are also many problems local to Antarctica as well, such as enhanced wave action erosion (melting) and calving of ice sheets, disruptions to phytoplankton, mass mortality of emperor penguins, to name a few. However, by far the most profound and far-reaching problem is the MOC reduction and global climate instability, with cascading feedbacks much more likely. Most important articles discussed in this video: “There are growing fears of an alarming shift in Antarctic sea ice”: https://www.newscientist.com/article/2421376-there-are-growing-fears-of-an-alarming-shift-in-antarctic-sea-ice/ “Slowdown of Antarctic Bottom Water export driven by climatic wind and sea-ice changes”: Antarctic Bottom Water (AABW) is pivotal for oceanic heat and carbon sequestrations on multidecadal to millennial timescales. The Weddell Sea contributes nearly a half of global AABW through Weddell Sea Deep Water and denser underlying Weddell Sea Bottom Water that form on the continental shelves via sea-ice production. Here we report an observed 30% reduction of Weddell Sea Bottom Water volume since 1992, with the largest decrease in the densest classes. This is probably driven by a multidecadal reduction in dense-water production over southern continental shelf associated with a greater than 40% decline in the sea-ice formation rate…”: https://www.nature.com/articles/s41558-023-01695-4.pdf “Abyssal ocean overturning slowdown and warming driven by Antarctic meltwater”: https://www.nature.com/articles/s41586-023-05762-w “Extensive melting of West Antarctic ice sheet now looks unavoidable”: https://www.newscientist.com/article/2398913-extensive-melting-of-west-antarctic-ice-sheet-now-looks-unavoidable/ “Unavoidable future increase in West Antarctic ice-shelf melting over the twenty-first century”: …We find that rapid ocean warming, at approximately triple the historical rate, is likely committed over the twenty-first century, with widespread increases in ice-shelf melting, including in regions crucial for ice-sheet stability...”: https://www.nature.com/articles/s41558-023-01818-x.pdf “Emperor penguin colonies lost all their chicks due to ice breakup”: https://www.newscientist.com/article/2388401-emperor-penguin-colonies-lost-all-their-chicks-due-to-ice-breakup/ “Large-scale drivers of the exceptionally low winter Antarctic sea ice extent in 2023”: https://www.frontiersin.org/articles/10.3389/feart.2024.1333706 “Impacts of recent Antarctic Sea-Ice Extremes”: https://agu.confex.com/agu/OSM24/meetingapp.cgi/Paper/1485667 “Observational Evidence for a Regime Shift in Summer Antarctic Sea Ice”: In recent years, the Southern Ocean has experienced extremely low sea ice cover in multiple summers. These low events were preceded by a multidecadal positive trend that culminated in record high ice coverage in 2014. This abrupt transition has led some authors to suggest that Antarctic sea ice has undergone a regime shift… We find that the standard deviation of the summer sea ice record has doubled from 0.31 million km2 in 1979–2006 to 0.76 million km2 for 2007–22. This increased variance is accompanied by a longer season-to-season sea ice memory. The atmosphere is the primary driver of Antarctic sea ice variability, but using a linear predictive model we show that sea ice changes cannot be explained by the atmosphere alone. Identifying whether a regime shift has occurred is difficult without a complete understanding of the physical mechanism of change. However, the statistical changes that we demonstrate (i.e., increased variance and autocor- relation, and a changed response to atmospheric forcing), as well as the increased spatial coherence noted by previous re- search, are indicators based on dynamical systems theory of an abrupt critical transition. Thus, our analysis is further evidence in support of a changed Antarctic sea ice system.”: https://journals.ametsoc.org/downloadpdf/view/journals/clim/37/7/JCLI-D-23-0479.1.pdf Please donate to http://PaulBeckwith.net to support my research and videos as I join the dots on abrupt climate system mayhem.
www.youtube.com#ClimateChange oh look 👀 europesays.com/923712/ World’s biggest iceberg moving beyond Antarctic waters #Environment
World’s biggest iceberg moving beyond Antarctic waters by misana123
europesays.com
Today in #Antarctic news…
More sad/bad news - this time #wildlife. #Avianflu found in the region. From British Antarctic Survey.
#birds #nature #science 🐧🇦🇶 #iceicebaby
Highly Pathogenic Avian Influenza (HPAI) has been confirmed in brown skua populations on Bird Island, South Georgia – the first known cases in the Antarctic region. Following reports of several ��...
www.bas.ac.uk
Antarctic sea ice in crisis – Australian Antarctic Program
www.antarctica.gov.au/news/explore...
Antarctic sea ice is in crisis, with a sudden decline recently observed after more than 30 years of relative stability. Scientists have a range of research projects underway to understand the conseque...
www.antarctica.gov.au
Warming of Antarctic deep-sea waters contribute to #sealevelrise in North Atlantic #Ocean, study finds
Analysis of mooring observations and hydrographic data suggest the Atlantic Meridional Overturning Circulation deep water limb in the North Atlantic has weakened.
news.miami.edu/rosenstiel/s...
World’s largest iceberg drifts beyond Antarctic waters
Video:
00:00:20
In November 2023, the A23a mega iceberg set sail after being grounded on the ocean floor for well over 40 years. Now, driven by winds and currents, A23a is heading away from Antarctic waters as seen in this new animation. The iceberg calved from West Antarctica in 1986 but quickly grounded itself in the Weddell Sea where it remained for over four decades. At around 4000 sq km in area, more than four times the size of New York City, and just over 280 m thick, the berg currently holds the title for world’s largest iceberg. The animation uses sea-ice concentration data and shows the iceberg’s movements between 1 November 2023 to 23 January 2024. Similar to many icebergs originating from the Weddell sector, A23a is likely to be expelled into the Antarctic Circumpolar Current – propelling it towards the South Atlantic along a trajectory commonly referred to as ‘iceberg alley’.
Warming of Antarctic deep-sea waters contribute to sea level rise in North Atlantic, study finds news.miami.edu/rosenstiel/s...
First penguins die in Antarctic of deadly H5N1 bird flu strain.
With confirmed or suspected cases in two Antarctic penguin species, researchers fear highly contagious virus could rip through colonies.
www.theguardian.com/environment/...
With confirmed or suspected cases in two Antarctic penguin species, researchers fear highly contagious virus could rip through colonies
www.theguardian.com
First penguins die in Antarctic of deadly H5N1 bird flu strain
With confirmed or suspected cases in two Antarctic penguin species, researchers fear highly contagious virus could rip through colonies
www.theguardian.com/environment/...
With confirmed or suspected cases in two Antarctic penguin species, researchers fear highly contagious virus could rip through colonies
www.theguardian.com
