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  • What is Axone?

    A movie named Axone — also spelt akhuni —soya bean dish of Nagaland has been recently released.

    The traditional ‘Axone’ dish is very unique in itself. However, one must note that it does NOT carry any GI tag. Still, there is a possibility of it being asked in match the pair type questions.

    What is Axone?

    • Axone — also spelt akhuni — is a fermented soya bean of Nagaland, known for its distinctive flavour and smell.
    • As much an ingredient as it is a condiment, Axone used to make pickles and chutneys, or curries of pork, fish, chicken, beef etc.
    • While it is called ‘axone’ in parts of Nagaland, fermented soya bean is cooked with, eaten and known by different names in different parts of Northeast India, including Meghalaya and Mizoram, Sikkim, Manipur as well in other South, Southeast and East Asian countries.
    • Axone is prepared and eaten across Nagaland but is particularly popular among the Sumi (also Sema) tribe. They use it in every meal.

  • “Assessment of Climate Change over the Indian Region” Report

    The Union Ministry of Earth Sciences (MoES) has released the “Assessment of Climate Change over the Indian Region” Report.

    This newscard discusses a very important concept: the Representative Concentration Pathway (RCP). Note its definition.  It can be directly asked as a statement based on prelims MCQ.

    Highlights of the report

    • Average surface air temperatures over India could rise by up to 4.4 degrees Celsius by the end of the century as compared to the period between 1976 and 2005, according to the MoES report.
    • The rise in temperatures will be even more pronounced in the Hindu Kush-Himalayan region where the average could reach 5.2°C.
    • The region is already highly vulnerable to climate-related variability in temperatures, rainfall and snowfall.
    • By 2100, the frequency of warm days and warm nights might also increase by 55 per cent and 70 per cent respectively, as compared to the period 1976-2005 under the RCP 8.5 scenario.
    • The incidences of heat waves over the country could also increase by three to four times. Their duration of occurrence might also increase which was already witnessed by the country in 2019.

    A 100-year record

    • Between 1900 and 2018, the average temperatures of India rose by 0.7°C.
    • This rise in temperatures has been largely attributed to global warming due to GHG emissions and land use and land cover changes.
    • But it has also been slightly reduced by the rising aerosol emissions in the atmosphere that have an overall cooling characteristic.
    • The report predicts that monsoon rainfall could change by an average of 14 per cent by 2100 that could go as high as 22.5 per cent.
    • The report does not mention if this change will be an increase or a decrease but still represents variability.
    • It further says that the overall rainfall during the monsoon season has decreased by six per cent between 1950 and 2015.

    Data on dry spells

    • The assessment also says that in the past few decades, there has been an increased frequency of dry spells during the monsoon season that has increased by 27 per cent between 1981-2011, as compared to 1951-1980.
    • The intensity of wet spells has also increased over the country, with central India receiving 75 per cent more extreme rainfall events between 1950 and 2015. This means that it either rains too little or too much.
    • One of the primary examples of this was the monsoon seasons of 2018 and 2019 where dry spells were broken by extremely heavy rainfall spells, creating a flood and drought cycle in many regions in India.

    What is Representative Concentration Pathway (RCP)?

    • A Representative Concentration Pathway (RCP) is a greenhouse gas concentration (not emissions) trajectory adopted by the IPCC.
    • It is defined as a radiative force in watt per square metre due to the rising greenhouse gas (GHG) emissions in the atmosphere.
    • Four pathways were used for climate modelling and research for the IPCC Fifth Assessment Report (AR5) in 2014.
    • The pathways describe different climate futures, all of which are considered possible depending on the volume of greenhouse gases (GHG) emitted in the years to come.
    • The RCPs – originally RCP2.6, RCP4.5, RCP6, and RCP8.5 – are labelled after a possible range of radiative forcing values in the year 2100 (2.6, 4.5, 6, and 8.5 W/m2, respectively).
    • Since AR5 the original pathways are being considered together with Shared Socioeconomic Pathways: as are new RCPs such as RCP1.9, RCP3.4 and RCP7.

  • When did CO2 become our planet’s arch enemy?

    Carbon dioxide was always essential for our planet. This newscard discusses when did it become too much.

    Try this question from CSP 2017:

    Q. In the context of mitigating the impending global warming due to anthropogenic emissions of carbon dioxide, which of the following can be the potential sites for carbon sequestration?

    1. Abandoned and uneconomic coal seams
    2. Depleted oil and gas reservoirs
    3. Subterranean deep saline formations

    Select the correct answer using the code given below:

    (a) 1 and 2 only

    (b) 3 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

    GHGs in atmosphere

    • The Earth’s atmosphere is made up of different gases. The temperature of the atmosphere depends on a balance between the incoming energy from the sun and the energy that bounces back into space.
    • Greenhouse gases (GHG) such as carbon dioxide (CO2), methane and nitrous oxide play an important role in the atmosphere.
    • They absorb some of the sun’s heat and release it back in all directions, including back to the atmosphere.
    • Through this process, CO2 and other GHGs keep the atmosphere warmer than it would be without them.
    • However, fossil fuel-run industries and other human activities add GHGs to the atmosphere. This, in turn, increases atmospheric temperature, causing global warming.

    Assessing the carbon level

    • In 1958, American scientist Charles David Keeling calculated the amount of CO2 in our atmosphere.
    • When he started his measurements in 1958, the CO2 levels were around 315 parts per million (PPM).
    • When he died in 2005, the project was taken over by his son Ralph Keeling. By 2014, CO2 levels had increased to about 400 PPM.
    • With his systematic study of atmospheric CO2, Keeling became the first person to alert the world about the increasing levels of CO2 in the atmosphere.

    Reasons for rising CO2 levels

    • Scientists first argued that the increasing release of methane and CO2 was due to agriculture and livestock.
    • But, with the start of the Industrial Revolution in the 18th century, the use of fossil fuels and CO2 levels rose simultaneously.
    • Nations that underwent the Industrial Revolution used huge amounts of fossil fuels and became centres of high CO2 emissions, while nations with an agrarian economy emitted less GHGs.
    • Over the years, as CO2 levels increased, it sparked off debates and arguments between the GHG-emitting rich industrial nations and the victims of global warming — the poorer nations.

  • Traditional art of Talamaddale

    The traditional art of ‘Talamaddale’, a variant of Yakshagana theatre, has gone virtual in times of COVID-19.

    Try this question from CSP 2017:

    Q.With reference to Manipuri Sankirtana, consider the following statements:

    1. It is a song and dance performance.
    2. Cymbals are the only musical instruments used in the performance.
    3. It is performed to narrate the life and deeds of Lord Krishna.

    Which of the statements given above is/are correct?

    (a) 1, 2 and 3.

    (b) 1 and 3 only

    (c) 2 and 3 only

    (d) 1 only

    Talamaddale theatre

    • Tala-Maddale is an ancient form of performance dialogue or debate performance in Southern India in the Karavali and Malnad regions of Karnataka and Kerala.
    • The plot and content of the conversation is drawn from popular mythology but the performance mainly consists of an impromptu debate between characters involving sarcasm, puns, philosophy positions and humour.
    • The main plot is sung from the same oral texts used for the Yakshgana form of dance- drama.
    • Performers claim that this was a more intellectual rendition of the dance during the monsoon season.

    How it is different from Yakshagana?

    • Unlike the Yakshagana performance, in the conventional ‘talamaddale,’ the artists sit across in a place without any costumes and engage in testing their oratory skills based on the episode chosen.
    • If music is common for both Yakshagana performance and ‘talamaddale’, the latter has only spoken word without any dance or costumes.
    • Hence it is an art form minus dance, costumes and stage conventions.
    • It has an ‘arthadhari’ who is an orator, a ‘bhagavatha’ (singer-cum-director), and a ‘maddale’ player.

    Back2Basics: Yakshagana

    • It is the oldest theatre form popular in Karnataka.
    • It emerged in the Vijayanagara Empire and was performed by Jakkula Varu
    • It is a descriptive dance drama.
    • It is presented from dusk to dawn.
    • The stories are drawn from Ramayana, Mahabharata and other epics from both Hindu and Jain tradition.

  • In news: Raja Parba Festival

    The Prime Minister has extended his greetings to the people of Odisha for the unique Raja Parba festival.

    Match the pair based question can be asked from festivals as such with pairs of name and celebrating state. Recently, the following festivals were also in the news: Ambubachi Mela, Thrisoor Puram, Meru Jatara, Nagoba Jatara etc.

    Also, note the similarities between the Raja Parba and Ambubachi Mela …

     About Raja Parba Festival

    • Raja Parba is Odisha’s three-day unique festival celebrating the onset of monsoon and the earth’s womanhood.
    • As a mark of respect towards the earth during her menstruation days, all agricultural works, like ploughing, sowing is suspended for the three days.
    • Raja Sankranti is the first day of the Ashara month.
    • It is celebrated on the day prior to the Sankranti, (Pahili Raja), the day of Sankranti, and the day after, known as Bhu Daha or ‘Basi Raja.
    • The festival is essentially the celebration of the earth’s womanhood.
    • It is believed that during this time the Mother Earth or Bhudevi undergoes menstruation.
    • The fourth day is the day of the ‘purification bath’.
    • As it is a celebration of womanhood, a lot of the focus is on young women, who wear new clothes, apply ‘Alata’ on their feet and enjoy folk songs while swinging on decorated rope swings.

     

  • Migrants and COVID

    In this Article, we highlight some facts about migration in India, summarize key relief measures announced by the government and directives issued by the Supreme Court for the migrant population in relation to the lockdown.
    ———————————————————————————
    Reference source: https://www.prsindia.org/theprsblog/migration-india-and-impact-lockdown-migrants

  • Lonar Lake colour changes to pink

    The colour of water in Maharashtra’s Lonar Lake, formed after a meteorite hit the Earth some 50,000 years ago, has changed to glaring.

    Make a note of all saltwater lakes in India. Few of them are Pulicat, Pangong Tso, Chilika, and Sambhar Lakes etc.

    About Lonar Lake

    • Lonar Lake, also known as Lonar crater, is a notified National Geo-heritage Monument, saline (pH of 10.5), Soda Lake, located at Lonar in Buldhana district, Maharashtra.
    • It was created by an asteroid collision with earth impact during the Pleistocene Epoch.
    • It is one of the four known, hyper-velocity, impact craters in basaltic rock anywhere on Earth.
    • It sits inside the Deccan Plateau—a massive plain of volcanic basalt rock created by eruptions some 65 million years ago.
    • Its location in this basalt field suggested to some geologists that it was a volcanic crater.

    Why there’s a color change?

    • The salinity and algae can be responsible for this change.
    • There is no oxygen below one meter of the lake’s water surface.
    • There is an example of a lake in Iran, where water becomes reddish due to increase in salinity.
    • The level of water in the Lonar Lake is currently low as compared to the few past years and there is no rain to pour fresh water in it.
    • The low level of water may lead to increased salinity and change in the behaviour of algae because of atmospheric changes.

  • Crisis of today should not blind us to the crisis of tomorrow

    Covid-19 pandemic has overwhelmed the governments across the world. And the destruction caused by it would impact not only our present but the future as well. So, what this means to our climate future? First and foremost, it will leave the governments with less fund to invest for the greener outcomes. What would be the other impacts? And how can we avoid turning blind eye to the crises waiting for us in the near future? Read the article to know…

    Cyclones amid pandemic-what do it signal?

    • The very language used to describe the effects of climate change is now being deployed, correctly, to shape our understanding of a covid-ravaged near future: poverty, the failure of markets, uncertainty, and an overwhelmed government.
    • In less than a month, we have been given a glimpse of how the climate crisis can yank at the seams of a state already undone.
    • We saw Cyclone Amphan transform from a tropical storm to one of the largest cyclones South Asia has ever seen in a matter of hours, aided by warmer than usual waters in the Bay of Bengal.
    • We also saw Cyclone Nisarga barrel down on Maharashtra, the second pre-monsoon cyclone to hit the west coast in 127 years.
    • Governments would have been hard-pressed to deal with such extremes even in the best of times.

    So, how COVID-19 would impact response to climate change?

    •  There are two strands of opinion.
    • The optimistic one sees this as a moment to remake our states and societies in a measured response.
    • This includes directing economic packages to areas that increase our resilience to natural disasters and technologies that reduce our emissions.
    • This could be an opportunity to reinforce sustainable behaviour — fewer morning commutes and less air travel, for example.
    • The other strand is more dire, arguing that this will amount to a lost decade or two as our attention is focused on keeping the teetering ship of economy afloat.
    • In this reading, present concerns will trump preparations for an uncertain future.
    • Between these two strands there is consensus that we are at a critical juncture.
    • What we do now will determine the flow of events decades into the future.

    What our climate future holds?

    We will have to face the following 3 problems in the future owing to the Covid-19 pandemic today.

    1. Scarcity of funds

    • It has been two months since India’s lockdown, and we know enough to have a rational conversation about our climate future.
    • Perhaps the most important news relates to public and private debt.
    • The government has raised its borrowing limit, states will need to borrow more to tide over shortfalls and the private sector has seen returns from investments dry out.
    • All three are already heavily indebted, meaning the cost of capital for future borrowing will only grow.
    • That leaves limited fiscal room to finance the building blocks of resilience: everything from grain to health, employment schemes, irrigation, efficient water systems and river management infrastructure.
    • It could mean that efforts to reduce our energy emissions are left without patient pools of long-term capital.

    2. Underdeveloped knowledge infrastructure

    • The knowledge infrastructure needed to react to climate change might be left similarly underdeveloped.
    • Climate change distinguishes itself from other policy fields in the wide range of analytical tasks it demands, from predicting weather trends to understanding how specific seed varieties react to droughts.
    • Thinking about climate change requires a lot of people exploring varied questions simultaneously.
    • That involves funding an ecosystem of thinkers from diverse disciplines.
    • Only the state can provide for multi-year studies, institutional support and the like.
    • These are inherently long-term investments and only really start paying off over decades.
    • It means that hamstrung investment in coming years will leave a knowledge vacuum in the future.

    3. Impact on the psychology of the government

    • The Indian government, reacting to a million crises erupting across the economy, will be hard-pressed to plan for a hazy but sinister future.
    • Promises of a greener, less turbulent future will falter against the turbulence of today.
    • This instinct will be shared by governments across the world.
    • This might well numb the effects of the global climate negotiation architecture.

    Way forward

    • Crafting a response that carefully balances present and future will take a great deal of collective effort.
    • Foremost, it will require policy ideas that deliberately marry employment and industrial priorities with green outcomes.
    • Ideas such as pushing to manufacture solar equipment or electric vehicles in India should, at some point, coalesce into something that looks like a climate plan for the country.
    • This task will fall to universities, NGOs, think tanks and individuals working together in disciplined debate.

    Consider the question “Do you agree with the view that the corona crisis would adversely impact our efforts towards mitigating the impact of climate change? Giver reasons in support of your argument.”

    Conclusion

    We should be careful not to drag ourselves through one crisis only to emerge into another longer, less predictable, and unstoppable one. So, balancing the present problems and their solutions with an eye on a certain and stable future is the need of the hour.

  • Challenger Deep: the deepest spot in the ocean

    On June 7, astronaut and oceanographer Kathy Sullivan, who was the first American woman to walk in space in 1984, became the first woman and the fifth person in history to descend to the deepest known spot in the world’s oceans, called the Challenger Deep in the Mariana Trench.

    The ocean relief can be divided into various parts such as Continental Shelf, Continental Slope, Continental Rise or Foot, Deep Ocean basins, Abyssal plains & Abyssal Hills, Oceanic Trenches, Seamounts and Guyots.

    Revise these ocean bottom relief  features from your basic references.

    Also revise India’s Deep Ocean Mission.

    What is Challenger Deep?

    • The Challenger Deep is the deepest known point in the Earth’s seabed hydrosphere (the oceans), with a depth of 10,902 to 10,929 m.
    • The deepest part is called the Challenger Deep, which is located below the surface of the western Pacific Ocean.
    • The first dive at Challenger Deep was made in 1960 by Lieutenant Don Walsh and Swiss scientist Jacques Piccard on a submersible called ‘Trieste’.
    • The British Ship HMS Challenger discovered Challenger Deep between 1872-1876.
    • In 2012, film director James Cameron reached the bottom of the Mariana trench after a descent that lasted 2 hours and 36 minutes.
    • Cameron reached a depth of about 10,908 metres on a dive in his submersible called the ‘Deepsea Challenger’ and became the first to complete a solo submarine dive to this spot.

    Why explore deep oceans?

    • Ocean exploration, however, is not randomly wandering in hopes of finding something new.
    • It is disciplined and organized and includes rigorous observations and documentation of biological, chemical, physical, geological, and archaeological aspects of the ocean.
    • Most of the existing knowledge of the oceans comes from shallower waters, while deeper waters remain relatively unexplored, even as humans are relying more on these areas for food, energy and other resources.
    • Further, finding out more about the deep ocean areas can potentially reveal new sources for medical drugs, food, energy resources and other products.
    • Significantly, information from the deep oceans can also help to predict earthquakes and tsunamis, and help us understand how we are affecting and getting affected by the Earth’s environment.

    What does it take to reach the deep ocean?

    • Vehicles called Human Occupied Vehicles (HOVs) may be used that carry scientists to the deep sea.
    • Alternatively, there are unmanned Remotely Operated Vehicles (ROVs) that are linked to ships using cables and can be steered by scientists remotely.
    • Even so, it is difficult for most private citizens to travel more than 100 feet below the surface of the ocean.
    • Further, technical divers can go as deep as 500 feet or more, but with an array of tanks filled with different gas blends.

    Why is it so difficult to explore deep oceans?

    • Most recreational divers can’t explore more than about 120 feet down due to the amount of air needed to keep lungs pressurized at depth.
    • Such depths could lead to nitrogen narcosis, the intoxication by nitrogen that starts to set in around that depth (most of our atmosphere is nitrogen, not oxygen).
    • Waters at such depths of several kilometres exert tremendous pressure which human bodies cannot sustain.

  • Permafrost and the hazards of its Thawing

    The principal reason that led to the recent 20,000-tonne oil leak at an Arctic region power plant in Russia that is now being recognised is the sinking of ground surface due to permafrost thaw.

    Try this question from Mains 2017:
    Q. What is Cryosphere? How does the Cryosphere affect global climate?

    What is Permafrost?

    • Permafrost is ground that remains completely frozen at 0 degrees Celsius or below for at least two years.
    • It is defined solely based on temperature and duration.
    • The permanently frozen ground, consisting of soil, sand, and rock held together by ice, is believed to have formed during glacial periods dating several millennia.

    Where are they found?

    • These grounds are known to be below 22 per cent of the land surface on Earth, mostly in polar zones and regions with high mountains.
    • They are spread across 55 per cent of the landmass in Russia and Canada, 85 per cent in the US state of Alaska, and possibly the entirety of Antarctica.
    • In northern Siberia, it forms a layer that is 1,500 m thick; 740 m in northern Alaska.
    • At lower latitudes, permafrost is found at high altitude locations such as the Alps and the Tibetian plateau.

    How climate change is eating away at these grounds?

    • The Earth’s polar and high altitude regions — its principal permafrost reservoirs — are the most threatened by climate change.
    • Arctic regions are warming twice as fast compared to the rest of the planet, its current rate of temperature change being the highest in 2,000 years.
    • In 2016, Arctic permafrost temperatures were 3.5 degrees Celsius higher than at the beginning of the 20th century.
    • A study has shown that every 1 degree Celsius rise in temperature can degrade up to 39 lakh square kilometre due to thawing.
    • This degradation is expected to further aggravate as the climate gets warmer, putting at risk 40 per cent of the world’s permafrost towards the end of the century– causing disastrous effects.

    The threat to infrastructure

    • Thawing permafrost is also ominous for man-made structures overhead.
    • The Russian oil leak occurred recorded temperatures in Siberia at more than 10 degrees Celsius above average, and called them “highly anomalous” for the region where the power plant is located.
    • As temperatures rise, the binding ice in permafrost melts, making the ground unstable and leading to massive potholes, landslides, and floods.
    • The sinking effect causes damage to key infrastructure such as roads, railway lines, buildings, power lines and pipelines.
    • These changes also threaten the survival of indigenous people, as well as Arctic animals.

    A ticking time bomb

    • Beneath its surface, permafrost contains large quantities of organic leftover from thousands of years prior — dead remains of plants, animals, and microorganisms that got frozen before they could rot.
    • It also holds a massive trove of pathogens.
    • When permafrost thaws, microbes start decomposing this carbon matter, releasing greenhouse gases like methane and carbon dioxide.
    • Researchers have estimated that for every 1 degree Celsius rise in temperature, these grounds could release GHGs to the tune of 4-6 years’ of emissions from coal, oil, and natural gas.
    • Along with greenhouse houses, these grounds could also release ancient bacteria and viruses into the atmosphere as they unfreeze.

    Back2Basics
    https://www.civilsdaily.com/news/thawing-of-permafrost/

    Also read:

    Ambarnaya River Oil spill in Russia