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 4:48 PM

The Coronavirus Disease

Severe acute respiratory syndrome-Coronavirus 2 (SARS-CoV-2) is a novel virus from the family of coronaviruses which causes COVID-19 i.e. Coronavirus Disease-2019. It is the successor of the SARS-CoV-1 which caused the SARS outbreak in the year 2003-2004. This is a positive-sense single-stranded RNA virus which has rapid mutation properties.

The etymology of the name suggests that 'Corona' comes from the Latin word corōna meaning crown, garland, or a wreath. When seen under an Electron Microscope, the virion which has a diameter of 50-200 nanometres looks like the solar corona hence named Coronavirus.

When the virus enters the body; it attaches itself to the binding site or the ACE 2 receptors of healthy lung cells through its spike protein. Then it enters the cell via this attachment and causes apoptosis or cell death. The virus also affects organs other than lungs such as the brain, heart and kidneys. The multiple impact points make it problematic for the researchers to create a vaccine in addition to its rapid mutation properties.

The disease might have a zoonotic origin i.e. the transmission occurs from animals to humans. On comparing the genomic sequences the Human Coronavirus strain is found to be 96% identical to Bat Coronavirus samples and 92% similar to the Pangolins samples. Human transmission of the disease takes place via air droplets when the infected person is coughing, sneezing or talking.

The first cases of this respiratory illness were reported to the World Health Organization (WHO) from Wuhan City, Hubei Province, China, on 31 December 2019. It is the first severe outbreak since the 2009 H1N1 Influenza Pandemic. Initially, it was supposed that the site of origination is Huanan Seafood Wholesale Market but, in May 2020 the negative samples tested, by  Chinese Center for Disease Control and Prevention, from the livestock market suggested that it was the site of the super spreading of the virus.

SARS-CoV-2 is known to have an average reproduction number of 2.2-2.6 which means that, on an average, one infected person can spread the infection to 2-3 people. Although if measures like social distancing are put into use, to reduce the exposure of the infected population, it leads to a significant reduction in transmission rates. The infection fatality rate (IFR) of COVID-19 in various studies till 16th June 2020 was projected to range 0.60% to 1% of infected people . However few studies suggested the IFR as high as 3.6%.

The testing of an individual takes place through a method known as real-time Reverse transcription Polymerization Chain reaction (rRT-PCR). The process of obtaining strains and testing the patients usually involves nasal swabs or sputum swabs; the results come in within a span of a few hours to a couple of days.

Currently, there are no known vaccines available for the virus or any specific antiviral treatments, but there are numerous vaccines in works all over the world to tackle COVID-19. Experts believe that the minimum time required to test a vaccine is 12 to 18 months.

Trials are also going on for the repurposed drugs or the drugs which are useful for treating other diseases and might be capable against COVID-19: Some of these drugs are Hydroxychloroquine, chloroquine, Remdesivir, Dexamethasone, Lopinavir-ritonavir, and Convalescent plasma.

The only current solutions for tackling the pandemic are social distancing, hand wash, hygiene and face masks.

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