Monday, July 20, 2020

What is at stake when an Arctic town hit record high temperature

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Charvi Trivedi

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What is at stake when an Arctic town hit record high temperature

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Global Views 360

Publication Date

July 20, 2020

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Mountain in Altai Republic, Siberia, Russian Federation

Mountain in Altai Republic, Siberia, Russian Federation | Source: Konstantin Dyadyun via Unsplash

The Russian Arctic region of Siberia has front row tickets to an approaching climate change rollercoaster ride as it experiences soaring temperatures.

The mercury climbed to 38⁰C (100.4F) in Verkhoyansk, Siberia in June 2020 creating the new record of highest temperature in the arctic region and beating Fort Yukon, Alaska, which recorded 37.8⁰C in June 1915. The forecast for the coming weeks was also a whopping 10⁰C higher than last year. This region is also known for experiencing the coldest temperatures, reaching as low as minus 60⁰C during winters.

Concerned scientists claim that the Arctic is heating with double the speed of global average. “Such heat-waves aren't necessarily new to Siberia, but that climate change is increasing their severity and length,” says Sergei Semyonov of the Yu. A. Izrael Institute of Global Climate and Ecology in Moscow.

The heat waves are occurring due to a ‘heat dome’ effect in the Arctic region. This phenomenon happens when the Air is pushed and compressed, creating a very high mass of air into one location. This heavy air prevents clouds from forming, keeping the weather sunny, and pushes warm temperatures down to the surface which creates a virtual dome in which heat is trapped for a long duration.

This has led to devastating consequences for the environment of the arctic region. The forest areas of Sakha Republic, Russian Federation are witnessing rampant Wildfires. In Siberia, a major diesel oil spill incident happened due to the melting of Permafrost and caused contamination in the Ambarnaya River.

Permafrost serves as a foundation for almost the entire Northern Hemisphere’s landmass and is also responsible for trapping twice the amount of carbon found in the atmosphere. This is a cause of concern, not only for the Arctic, but for the entire globe as it would amount to release of more carbon dioxide in the atmosphere.

Global warming is further fuelling the increase in temperatures of the frigid regions. May 2020 was reportedly the warmest month, according to the climate report of Copernicus Climate Change Service. As a result, snow in these areas melted earlier than it was supposed to. In 2012 as well, around 97% of the ice sheets in Greenland turned to slush due to extensive warming and in 2016, the warm climate in Norway resulted in rainfall instead of snowfall.

From these observations, it would be fitting to state that our planet is undergoing ‘Polar Amplification’, meaning, quicker warming of the poles. Snow cover helps in reflecting the sunlight back in the atmosphere. However, with the gradual warming of Earth, the amount of snow is declining and more heat is being captured instead of being reflected. Melting of snow and icy bodies contributes to sea level rise, increasing the probability of floods in low lying coastal areas.

These events are indicative of the degrading health of our planet which to a large extent are caused by our reckless actions. If we persist with business as usual, the survival of the human race may be as endangered as that of the Siberian tigers.

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February 4, 2021 4:49 PM

Discovery of a new particle: A Charming Tetraquark

While the world is horrified by the novel Coronavirus, scientists at the European Centre for Nuclear Research (CERN) announced the discovery of a never seen before tetraquark. Any finding in particle physics is a phenomenal one because it could tell us a lot about the origins of the universe and how everything came to be. And this discovery is quite charming and quarky (quirky).

Quarks are the elementary particles so any further division of these particles is not possible. This means everything in the universe is ultimately a combination of Quarks. Any new discovery of Quarks  therefore increase our understanding about the origin of universe

When three Quarks come together, they form familiar particles known as Baryons, for instance, protons and neutrons, found in the nucleus of an atom. A tetraquark, in particle physics, is an exotic meson composed of four quarks.

Murray Gell-Mann, recipient of the 1969 Nobel Prize in Physics for his work on the theory of Elementary particles, chose the name ‘Quark’. Another scientist,  George Zweig from CERN also proposed the Quark theory independently of Gell-Mann.

All the new particles are detected using particle accelerators where particles are accelerated at almost the speed of light and collide to look into their subsets. It is like knocking two rocks together so that they break into smaller constituents.

The most recent tetraquark, named X (6900) was discovered by CERN physicists while working on LHCb (Large Hadron Collider beauty experiment). The already known tetraquarks contain a particular combination of two relatively heavy quarks and two light Quarks. On the other hand X(6900) consists of four heavy Quarks: two Quarks and two anti-Quarks.

This exclusive particle made of unusual combinations is a perfect setting for understanding the fundamental force of nature known as Strong Interaction. The strong force is vital to comprehend as it binds together protons, neutrons and the nucleus that ultimately make up matter. Another perk of X(6900)  is its relatively heavy mass, so these are simpler to look at and are more stable as compared to notoriously fast moving-lighter ones.

The paper written by 800 scientists is yet to be peer-reviewed. The bump observed has a statistical significance of more than five sigma (standard deviations) that is good enough to claim the discovery of a new particle.

In any scenario, this unusual discovery will serve as a piece for completing the puzzle of our universe while serving as evidence of the presence of new particles not yet found.

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