The benefits and harms of the Earth’s ozone layer. The ozone hole in Antarctica is steadily shrinking
Countries are doing the right thing by continuing to ban chemicals called CFCs and HCFCs, which deplete the ozone layer above Earth. However, while this helps restore the protective ozone layer, scientists have found that restoring the ozone layer will lead to greater global warming than originally thought. Air pollution from vehicles, factories, and power plants also degrades the ozone layer near the Earth’s surface, causing health problems and warming the planet.
Antarctic and Atlantic currents weaken, La Niña delayed, scientists discover new ocean currents
Antarctic currents, which supply 40% of the world’s deep oceans with nutrients and oxygen, are slowing dramatically. These deep ocean tides supply nearly half the world’s oceans with vital nutrients and oxygen, but melting ice shelves are slowing them. Currents in the Atlantic Ocean are also weakening — which could make the climate in some regions unrecognizable. And a newly discovered body of water called Atlantic Equatorial Water stretches from Brazil to West Africa.
Birds are changing their behavior and activities due to climate change
Climate change is preventing birds from reproducing. Scientists have already found out that changes in natural and climatic conditions have a negative impact on the population of seabirds. Accelerating trends in climate change on the planet are confirmed by new patterns in the behavior of animals and birds of Western Taimyr. New studies show that increasing tropical storms threaten seabirds. Southern birds and spiders get to the Arctic through “corridors” that have appeared due to the melting of permafrost.
The tsunami impacts in Russia include coastal areas of Kamchatka, the Kuril Islands, Sakhalin Island and Primorye
Climate change could trigger giant, deadly tsunamis from Antarctica, a new study warns. Sediment shifting beneath the Antarctic seabed could trigger giant tsunamis due to rising ocean temperatures. Fourteen cities and dozens of towns in Russia are vulnerable to tsunamis across three regions of the Far East, with powerful waves capable of hitting their coasts at speeds of up to 1,000 kilometres per hour.
The southernmost continent, Antarctica, is warming and blooming
The remains of a 90-million-year-old rainforest have been discovered beneath the ice of Antarctica. Now, warmer temperatures are melting glaciers and the meltwater is allowing seeds to begin to germinate. Antarctica is in the grip of one of the world’s fastest climate changes. Its melting ice could contribute to sea level rises of up to 5 metres. Where the ice disappears, it leaves behind barren land. By the end of this century, land the size of a small country could emerge from beneath the ice. Antarctica’s Thwaites Glacier has earned its nickname “Doomsday Glacier” for its potential to flood coastlines around the world if it collapses.
Melting polar ice caused by climate change is redistributing the Earth’s mass and increasing the length of the day
Researchers used more than 120 years of data to understand how melting ice, depleting groundwater and rising sea levels are shifting the planet’s rotation axis and lengthening the days.
The Arctic and Antarctica continue to melt rapidly, revealing ancient things hidden beneath the ice
The Arctic is warming faster than anywhere else on Earth. Ice and snow are melting, and Arctic sea ice is thinning and retreating. This means that algae living on the bottom of the sea ice are getting more sunlight, leading to an annual summer bloom once there is enough light. Erebus, located on Antarctica’s Ross Island (separated from the mainland by McMurdo Sound), is the southernmost active volcano on Earth; the second-tallest on the sixth continent, at 3,794 metres.
Global warming will allow species of flora and fauna to colonize previously uncharacteristic territories
In Russia, it was revealed that the fauna of Siberia is becoming more southern due to climate change. Global warming will allow tropical species from the Atlantic to colonize the Mediterranean Sea. Global warming is making some species of marine animals more susceptible to the spread of diseases such as avian influenza due to the animals congregating in breeding and feeding areas or changing migration patterns. Some researchers are concerned that current rates of warming could make oceans as warm and acidic as they were during the end of the Permian extinction, 250 million years ago, when up to 90 percent of marine species died out.
The Arctic could become ice-free in the 2030s, Antarctica and Greenland are melting at record rates
The Arctic will be ice-free within a decade during the summer months. A new study from the University of Colorado Boulder says the Arctic could become ice-free in August or September as early as the 2020s or 2030s. The Arctic could then remain ice-free for nine months of the year, as predicted by worst-case climate scenarios. This is largely due to the fact that sea ice, which reflects solar radiation, melts into the open ocean, which absorbs solar radiation.
Russian station “Vostok” in Antarctica explores Lake Vostok
Lake Vostok was the last major geographical discovery on Earth, and it was made by Russia. The existence of the lake under four kilometers of ice was proven in 1994. In February 2012, for the first time in human history, as a result of drilling into the ice sheet, Russian scientists reached the surface of the subglacial Lake Vostok at a depth of 3769.3 meters. The Russian research station “Vostok” is one of the most modern and well-equipped in Antarctica, Russian President Vladimir Putin said at the ceremony of putting into trial operation a new wintering complex.
Antarctica: Humanity still has time to prepare for rapidly rising sea levels
Antarctica’s glaciers are melting at a catastrophic rate, but humanity still has time to prepare for rapidly rising sea levels. An international team of oceanologists has discovered that quite strong and warm currents move through large cracks in the bases of Antarctic sea glaciers, which accelerate the process of melting of these ice masses, preventing the continental glaciers of Antarctica from quickly “sliding” into the sea. The retreat of Antarctic glaciers due to rising summer temperatures has led to the melting of ancient mosses. Fossil mosses, buried under ice for several thousand years, became accessible to microorganisms and became a source of the greenhouse gas methane.
The Arctic, Antarctica and Greenland have received special attention from organizations involved in space research
The Russian satellite constellation Arktika-M, launched in 2021 and 2023, transmitted the first images of the Arctic region and surrounding areas from space. On June 30, 2011, NASA’s Terra satellite made several passes over the Arctic. ICESat-2 is the second spacecraft to study the Earth’s ice cover. The US-India satellite NISAR will begin monitoring changes in the Earth’s frozen regions in 2024.
The Earth’s South Pole is melting and cracking, and many new faults have opened in recent years
The Glenzer-Conger Glacier collapsed in East Antarctica, an area long considered stable and not greatly affected by climate change.
Anomalous temperatures were simultaneously recorded in the Arctic and Antarctica
Simultaneous significant warming was recorded at the North and South poles of the planet – the temperature at the Antarctic Concordia station, located at an altitude of 3234 meters above sea level, reached −12.2°C the day before, which is 40°C above average.
Warming continues to accelerate on its own
The accumulation of sea salt and the seepage of warm, salty seawater under ice sheets as glaciers melt accelerate the warming process.
South Pole Ice Sheet Contains Major Volcanic Activity
The scan showed that in Antarctica, 138 volcanoes rest under 3-4 km of ice, 91 of which are geologically hazardous objects.
Melting glaciers reveal unknown species and meteorite remains
Glaciers are capable of preserving information about the history of the Earth, as they trap dust particles, traces of gas, microbes and plant matter from the environment.