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Subject: Environment

  • Climate Change Performance Index, 2021

    The 17th edition of the Climate Change Performance Index (CCPI) 2021 was released recently.

    It’s a very rare feat that India has performed so better in any climate-related index. We can use this data to highlight India’s dedicated efforts for Paris Agreement.

    About CCPI

    • The CCPI is an independent monitoring tool for tracking countries’ climate protection performance. It has been published annually since 2005.
    • It is compiled by Germanwatch, the New Climate Institute, and the Climate Action Network.
    • It evaluates 57 countries and the European Union, which together generate 90%+ of global greenhouse gas emissions.

    Parameters of the index

    • The CCPI looks at four categories, with 14 indicators: Greenhouse Gas Emissions (40% of the overall score), Renewable Energy (20%), Energy Use (20%), and Climate Policy (20%).
    • The CCPI’s unique climate policy section evaluates countries’ progress in implementing policies working towards achieving the Paris Agreement goals.

    Highlights of the 2021 report

    • The first three ranks of the overall rankings were kept empty because no country had performed well enough in all index categories to achieve an overall very high rating.
    • The 2021 report places Sweden on top, while countries such as Morocco and the UK are also ranked high.
    • The bottom-ranked country, the United States, therefore, was placed at 61.

    Low performers

    • Iran and Russia are ranked the lowest in this category.
    • Overall, Australia, South Korea and Russia are among the lowest performing countries along with Kazakhstan and Saudi Arabia.
    • China is ranked 33 overall and has an overall rating of “low”.

    India’s performance

    • In the overall rankings, India is at number 10 with a score of 63.98.
    • It is a high performer except in the renewable energy category, in which it is ranked “medium”.
    • The report says that India is benefiting from its relatively low per-capita emissions.
    • In terms of greenhouse gas emissions, Sweden, Egypt, Chile and the UK are in the top 7. India is ranked 12.

     

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  • Froth formation in Yamuna

    The visuals of devotees taking a dip in the froth-filled waters of the Yamuna River sent chills down the spine of the residents of Delhi.

    What is Froth Formation?

    • This is a phenomenon that takes place on many lakes and streams.
    • Foam bubbles are produced when organic matter decomposes.
    • These foam-producing molecules have one end that repels water and another that attracts water and they work to reduce the surface tension on the surface of the water.
    • These foam bubbles are lighter than water, so they float on the surface as a thin film that gradually accumulates.

    What causes the froth?

    • The presence of phosphates and surfactants in untreated sewage from Delhi, Haryana and Uttar Pradesh is a major reason behind frothing.
    • While these two components comprise of 1 per cent, the remaining 99 percent is air and water.

    What are the sources of pollution that cause foam formation?

    • Untreated sewage may contain soap-detergent particles.
    • The other sources are industrial effluents, organic matter from decomposing vegetation, and the presence of filamentous bacteria.
    • The pollution from the sugar and paper industries in Uttar Pradesh also causes pollution in the Yamuna.

    What are its health hazards?

    • Short-term exposure can lead to skin irritation and allergies.
    • If ingested, these chemicals may cause gastrointestinal problems and diseases like typhoid.
    • Long-term exposure to heavy metals in industrial pollutants can cause neurological issues and hormonal imbalances.

     

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  • The long road to Net Zero

    India has joined a high-profile group of countries pledging for net-zero target by 2070.

    What does Net-Zero mean?

    • Net-zero, which is also referred to as carbon-neutrality, does not mean that a country would bring down its emissions to zero.
    • That would be gross-zero, which means reaching a state where there are no emissions at all, a scenario hard to comprehend.
    • Therefore, net-zero is a state in which a country’s emissions are compensated by absorption and removal of greenhouse gases from the atmosphere.

    What’s the difference between gross zero and net-zero?

    • Gross zero would mean stopping all emissions, which isn’t realistically attainable across all sectors of our lives and industry.
    • Even with best efforts to reduce them, there will still be some emissions.
    • Net-zero looks at emissions overall, allowing for the removal of any unavoidable emissions, such as those from aviation or manufacturing.
    • Removing greenhouse gases could be via nature, as trees take carbon dioxide from the atmosphere, or through new technology or changing industrial processes.

    What is carbon negativity?

    • It is even possible for a country to have negative emissions if the absorption and removal exceed the actual emissions.
    • *Bhutan has negative emissions because it absorbs more than it emits.

    What is the outlook for India’s emissions?

    • Analysis of India’s growth path points to rising GDP per capita, with a rise in carbon emissions in the short term, primarily from energy.
    • There is pressure from absolute increase in population and consumption, but population growth is slowing.

    India’s major emission sources

    • In terms of sectoral GHG emissions, data from 2016 show that electricity and heat account for the highest share (1.11 billion tonnes).
    • It is followed by agriculture (704.16 million tonnes), manufacturing and construction (533.8 million tonnes), transport (265.3 million tonnes), industry (130.61 million tonnes).
    • Land-use change and forestry (126.43 million tonnes) is also a major source.
    • Other fuel use (119.04 million tonnes), buildings (109.2 million tonnes), waste (80.98 million tonnes), fugitive emissions (54.95 million tonnes) accounts for major urban sources.
    • Aviation and shipping (20.4 million tonnes) accounts for the least source of emission.

    Immediate interventions that can be made

    • Legal mechanism: India needs to create a legal mandate for climate impact assessment of all activities.
    • Investment: This can facilitate investment by dedicated green funds.
    • Wholistic participation: Public sector institutions promoted by the government, co-operatives and even market mechanisms will participate.
    • Renewable energy: The 500 GW renewables target needs a major boost, such as channeling more national and international climate funding into decentralized solar power.
    • Hydrogen economy: Another emerging sector is green hydrogen production because of its potential as a clean fuel. India has a National Hydrogen Mission now in place.
    • Waste Management: India’s urban solid waste management will need to modernise to curb methane emissions from unscientific landfills.
    • Stored carbon mitigation: Preventing the release of stored carbon in the environment, such as trees and soil, has to be a net zero priority.

    Role of developed countries

    • India’s argument is that it has historically been one of the lowest emitters of GHGs.
    • The impetus has to come from the developed economies that had the benefit of carbon-intensive development since the Industrial Revolution.

    Way forward

    • These plans need a political consensus and support from State governments.
    • Net-zero will involve industrial renewal using green innovation, green economy support and supply chains yielding new jobs.
    • It also needs low carbon technologies, zero-emission vehicles, and renewed cities promoting walking and cycling.
    • The industry will need to make highly energy-efficient goods that last longer, and consumers should be given a legal right to repair goods they buy.

     

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  • Sixth Mass Extinction?

    A paper published recently has come up with a new reason behind the first mass extinction, also known as the Late Ordovician mass extinction.

    Species Extinction

    • Extinction is a part of life, and animals and plants disappear all the time. About 98% of all the organisms that have ever existed on our planet are now extinct.
    • When a species goes extinct, its role in the ecosystem is usually filled by new species, or other existing ones.

    What is Mass Extinction?

    • Earth’s ‘normal’ extinction rate is often thought to be somewhere between 0.1 and 1 species per 10,000 species per 100 years.
    • This is known as the background rate of extinction.
    • A mass extinction event is when species vanish much faster than they are replaced.
    • This is usually defined as about 75% of the world’s species being lost in a ‘short’ amount of geological time – less than 2.8 million years.

    How many mass extinctions have there been?

    Five great mass extinctions have changed the face of life on Earth. We know what caused some of them, but others remain a mystery:

    [I] Ordovician-Silurian ME

    • It occurred 443 million years ago and wiped out approximately 85% of all species.
    • Scientists think it was caused by temperatures plummeting and huge glaciers forming, which caused sea levels to drop dramatically.
    • This was followed by a period of rapid warming. Many small marine creatures died out.

    [II] Devonian ME

    • It took place 374 million years ago and killed about three-quarters of the world’s species, most of which were marine invertebrates that lived at the bottom of the sea.
    • This was a period of many environmental changes, including global warming and cooling, a rise and fall of sea levels and a reduction in oxygen and carbon dioxide in the atmosphere.
    • We don’t know exactly what triggered the extinction event.

    [III] Permian ME

    • It happened 250 million years ago, was the largest and most devastating event of the five.
    • Also known as the Great Dying, it eradicated more than 95% of all species, including most of the vertebrates which had begun to evolve by this time.
    • Some scientists think Earth was hit by a large asteroid which filled the air with dust particles that blocked out the Sun and caused acid rain.
    • Others think there was a large volcanic explosion that increased carbon dioxide and made the oceans toxic.

    [IV] Triassic ME

    • It took place 200 million years ago, eliminating about 80% of Earth’s species, including many types of dinosaurs.
    • This was probably caused by colossal geological activity that increased carbon dioxide levels and global temperatures, as well as ocean acidification.

    [V] Cretaceous ME

    • It occurred 65 million years ago, killing 78% of all species, including the remaining non-avian dinosaurs.
    • This was most likely caused by an asteroid hitting the Earth in what is now Mexico, potentially compounded by ongoing flood volcanism in what is now India.

    What caused first ME?

    • The cooling climate likely changed the ocean circulation pattern.
    • This caused a disruption in the flow of oxygen-rich water from the shallow seas to deeper oceans, leading to a mass extinction of marine creatures.
    • Ordovician Sea has familiar groups like clams and snails and sponges.
    • Many other groups are now very reduced in diversity or entirely extinct like trilobites, brachiopods, and crinoids.

    The sixth mass extinction

    • We are currently experiencing a sixth mass extinction as the result of human-induced climate change.
    • There have been several theories behind each mass extinction and with advances in new technologies, researchers have been uncovering more intricate details about these events.

    Try this PYQ from CSP 2018

    The term “sixth mass extinction/sixth extinction” is often mentioned in the news in the context of the discussion of:

     

    (a) Widespread monoculture Practices agriculture and large-scale commercial farming with indiscriminate use of chemicals in many parts of the world that may result in the loss of good native ecosystems.

    (b) Fears of a possible collision of a meteorite with the Earth in the near future in the manner it happened 65million years ago that caused the mass extinction of many species including those of dinosaurs.

    (c) Large scale cultivation of genetically modified crops in many parts of the world and promoting their cultivation in other Parts of the world may cause the disappearance of good native crop plants and the loss of food biodiversity.

    (d) Mankind’s over-exploitation/misuse of natural resources, fragmentation/loss, natural habitats, destruction of ecosystems, pollution and global climate change.

     

    [wpdiscuz-feedback id=”agqt1mog92″ question=”Please leave a feedback on this” opened=”1″]Post your answers here.[/wpdiscuz-feedback]

     

     

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  • The right time for India to have its own climate law

    Context

    The United Nations Climate Change Conference (COP26, from October 31 to November 12, 2021), at Glasgow, Scotland is important as it will call for practical implementation of the 2015 Paris Accord, setting the rules for the Accord.

    Indian proposals

    • Prime Minister Narendra Modi announced, on November 1 at Glasgow, a ‘Panchamrit solution’ which aims at reducing fossil fuel dependence and carbon intensity.
    • This also includes ramping up India’s renewable energy share to 50% by 2030.
    • Union Minister of Environment, Forest and Climate Change Bhupender Yadav has reasserted the call for the promised $100 billion a year as support (from the developed world to the developing world).
    • But as we consider new energy pathways, we must also consider the question of climate hazard, nature-based solutions and national accountability.
    • This is the right time for India to mull setting up a climate law while staying true to its goals of climate justice, carbon space and environmental protection.

    Why India needs climate law

    • There are a few reasons for this.
    • Existing laws not adequate: Our existing laws are not adequate to deal with climate change.
    • We have for example the Environment (Protection) Act (EPA), 1986, the Air (Prevention and Control of Pollution) Act, 1981 and Water (Prevention and Control of Pollution) Act, 1974.
    • Yet, climate is not exactly water or air.
    • The Environment (Protection) Act is grossly inadequate to deal with violations on climate. Clause 24 of the Act, “Effect of Other Laws”, states that if an offence is committed under the EPA or any other law, the person will be punished under the other law (for example, Code of Criminal Procedure).
    • This makes the EPA subordinate to every other law. 
    • There is a need to integrate climate action: Integration includes adaptation and mitigation — and monitoring progress.
    • Comprehensive climate action is not just technological such as changing energy sources or carbon intensity, but also nature-based such as emphasising restoration of ecosystems.
    • India’s situation is unique: Climate action cannot come by furthering sharpening divides or exacerbating poverty, and this includes our stated renewable energy goals.
    • The 500 Gigawatt by 2030 goal for renewable can put critically endangered grassland and desert birds such as the Great Indian Bustard at risk, as they die on collision with wires in the desert.

    Suggestions on climate law

    • A climate law could consider two aspects.
    • Commission on climate change: Creating an institution that monitors action plans for climate change.
    • A ‘Commission on Climate Change’ could be set up, with the power and the authority to issue directions, and oversee implementation of plans and programmes on climate.
    • The Commission could have quasi-judicial powers with powers of a civil court to ensure that its directions are followed in letter and spirit.
    • System of liability and accountability: We need a system of liability and accountability at short-, medium- and long-term levels as we face hazards.
    • This also means having a legally enforceable National Climate Change Plan that goes beyond just policy guidelines.
    • A Climate Commission could ideally prevent gross negligence in fragile areas and fix accountability if it arises.

    Conclusion

    We have an urgent moral imperative to tackle climate change and reduce its worst impacts. But we also should Indianise the process by bringing in a just and effective law — with guts, a spine, a heart, and, most importantly, teeth.

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  • Global Methane Pledge

    The Global Methane Pledge was launched at the ongoing UN COP26 climate conference in Glasgow.

    What is the Global Methane Pledge?

    • Global Methane Pledge is an agreement to reduce global methane emissions.
    • One of the central aims of this agreement is to cut down methane emissions by up to 30 per cent from 2020 levels by the year 2030.
    • The pledge was first announced in September by the United States and the European Union.
    • So far, over 90 countries have signed this pledge.

    Why methane?

    • According to the UN, 25 % of the warming that the world is experiencing today is because of methane.
    • Methane is the second-most abundant greenhouse gas in the atmosphere, after carbon dioxide.
    • According to IPCC, methane accounts for about half of the 1.0 degrees Celsius net rise in global average temperature since the pre-industrial era.

    About Methane

    • Methane is a greenhouse gas, which is also a component of natural gas.
    • There are various sources of methane including human and natural sources.
    • The anthropogenic sources are responsible for 60 per cent of global methane emissions.
    • It includes landfills, oil and natural gas systems, agricultural activities, coal mining, wastewater treatment, and certain industrial processes.
    • The oil and gas sectors are among the largest contributors to human sources of methane.
    • These emissions come primarily from the burning of fossil fuels, decomposition in landfills and the agriculture sector.

    What is Coal-based Methane?

    • CBM, like shale gas, is extracted from unconventional gas reservoirs — where gas is extracted directly from the rock that is the source of the gas (shale in case of shale gas and coal in case of CBM).
    • The methane is held underground within the coal and is extracted by drilling into the coal seam and removing the groundwater.
    • The resulting drop in pressure causes the methane to be released from the coal.

    Try this PYQ:

    Q. With reference to two non-conventional energy sources called ‘coalbed methane’ and ‘shale gas’, consider the following ‘statements:

    1. Coalbed methane is the pure methane gas extracted from coal seams, while shale gas is a mixture of propane and butane only that can be extracted from fi ne-grained sedimentary rocks.
    2. In India abundant coalbed methane sources exist, but so far no shale gas sources have been found.

    Which of the statements given above is/are correct?

    (a) 1 only

    (b) 2 only

    (c) Both 1 and 2

    (d) Neither 1 nor 2

     

    [wpdiscuz-feedback id=”crtvj8gxcp” question=”Please leave a feedback on this” opened=”1″]Post your answers here.[/wpdiscuz-feedback]

    Why is dealing with methane important for climate change?

    • Methane has a much shorter atmospheric lifetime (12 years as compared to centuries for CO2).
    • However, it is a much more potent greenhouse gas simply because it absorbs more energy while it is in the atmosphere.
    • The UN notes that methane is a powerful pollutant and has a global warming potential that is 80 times greater than carbon dioxide, about 20 years after it has been released into the atmosphere.

    Back2Basics: CO2 Equivalents

    • Each greenhouse gas (GHG) has a different global warming potential (GWP) and persists for a different length of time in the atmosphere.
    • The three main greenhouse gases (along with water vapour) and their 100-year global warming potential (GWP) compared to carbon dioxide are:

    1 x – carbon dioxide (CO2)

    25 x – methane (CH4) – I.e. Releasing 1 kg of CH4into the atmosphere is about equivalent to releasing 25 kg of CO2

    298 x – nitrous oxide (N2O)

    • Water vapour is not considered to be a cause of man-made global warming because it does not persist in the atmosphere for more than a few days.
    • There are other greenhouse gases which have far greater global warming potential (GWP) but are much less prevalent. These are sulphur hexafluoride (SF6), hydrofluorocarbons (HFCs), and perfluorocarbons (PFCs).
    • There are a wide variety of uses for SF6, HFCs, and PFCs but they have been most commonly used as refrigerants and for fire suppression.
    • Many of these compounds also have a depleting effect on ozone in the upper atmosphere.

     

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  • India offers ‘Panchamrita’ Strategy for Climate Conundrum at Glasgow

    PM Modi has proposed a five-fold strategy called the ‘Panchamrita’ for India to play its part in helping the world get closer to 1.5 degrees Celsius on the first day of the global climate meeting in Glasgow.

    What is Panchamrita?

    • ‘Panchamrita’ is a traditional method of mixing five natural foods — milk, ghee, curd, honey and jaggery. These are used in Hindu and Jain worship rituals. It is also used as a technique in Ayurveda.
    • The PM euphemistically termed his scheme as ‘Panchamrita’ meaning the ‘five ambrosia’.
    • Under Panchamrita’, India will:
    1. Get its non-fossil energy capacity to 500 gigawatts by 2030
    2. Meet 50 per cent of its energy requirements till 2030 with renewable energy
    3. Reduce its projected carbon emission by one billion tonnes by 2030
    4. Reduce the carbon intensity of its economy by 45 per cent by 2030
    5. Achieve net zero by 2070

    Key takeaways of PM’s speech

    (a) Commitment for climate action

    • India consists of 17 per cent of the world’s population but contribute only five per cent of emissions.
    • Yet, it has left no stone unturned in doing our bit to fight climate change.
    • At Paris, India was making promises not to the world but to itself and 1.3 billion Indians, PM said.

    (b) Climate finance

    • The 2015 Paris CoP where the Paris Agreement was signed was not a summit but a sentiment.
    • The promises made till now on climate finance were useless.
    • When we all are increasing our ambitions on climate action, the world’s ambition could not stay the same on climate finance as was agreed at the time of Paris.

    (c) India’s track record

    • India was fourth as far as installed renewable energy capacity was concerned.
    • The Indian Railways has pledged to make itself net-zero by 2030. This will result in an annual 60 million tonnes reduction in emissions.
    • India initiated the International Solar Alliance for solar energy.
    • It has also set up the coalition for disaster resilient infrastructure for climate adaptation.

     

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  • [pib] BASIC Countries

    The Union Environment Minister has delivered the statement on behalf of the BASIC group of countries at the UN Climate Change Conference underway at Glasgow.

    Who are the BASIC Countries?

    • The BASIC countries (also Basic countries or BASIC) are a bloc of four large newly industrialized countries – Brazil, South Africa, India and China.
    • It was formed by an agreement on 28 November 2009.
    • The four committed to act jointly at the Copenhagen climate summit, including a possible united walk-out if their common minimum position was not met by the developed nations.
    • This emerging geopolitical alliance, initiated and led by China, then brokered the final Copenhagen Accord with the United States.

    What is the Copenhagen Accord?

    • The Copenhagen Accord is a document signed at COP 15 to the UNFCCC on 18 December 2009.
    • The Accord states that global warming should be limited to below 2.0 °C (3.6 °F).
    • It does not specify what the baseline is for these temperature targets (e.g., relative to pre-industrial or 1990 temperatures).
    • In January 2010, the Accord was described merely as a political agreement and not legally binding, as is argued by the US and Europe.
    • It is not legally binding and does not commit countries to agree to a binding successor to the Kyoto Protocol, whose round ended in 2012.
    • According to the UNFCCC, these targets are relative to pre-industrial temperatures.

     

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  • Guidelines released for safe rescue, release of Ganges River Dolphins (GRDs)

    The Jal Shakti Ministry has released a guide for the safe rescue and release of stranded Ganges River Dolphins.

    Gangetic Dolphin

    • The Gangetic river system is home to a vast variety of aquatic life, including the Gangetic dolphin (Platanista gangetica).
    • The species, whose global population is estimated at 4,000, are (nearly 80%) found in the Indian subcontinent.
    • It is found mainly in the Indian subcontinent, particularly in Ganga-Brahmaputra-Meghna and Karnaphuli-Sangu river systems.
    • It is one of five species of river dolphin found around the world.
    • Only three species of freshwater dolphins are remaining on the earth after the functional extinction of the Chinese river Dolphin (Baiji) in 2006.

    Conservation status

    1. The GRDs have been designated the National Aquatic Animal of India since 2010.
    • It is listed as:
    1. Endangered under IUCN Red List
    2. Schedule I of the Indian Wildlife (Protection) Act (1972)
    3. Appendix I of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES)

    About the guidelines

    • The document has been prepared by the Turtle Survival Alliance, India Program and Environment, Forest and Climate Change Department (EFCCD), Uttar Pradesh.
    • The guide has been drawn from years of experience of the organization while rescuing 25 Ganges River Dolphins (GRDs) stranded in irrigation canals.

    Various threats

    • They often accidentally enter canal channels in northern India and are often entrapped, and die as they are unable to swim up against the gradient.
    • They are eventually harassed by the locals.
    • Opportunistic poaching for meat and oil in certain pockets of the country is another big threat.

     

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  • US research highlights Indian farming practices

    A paper has recently published in the US has found that Integrated farming with intercropping increases food production while reducing environmental footprint.

    What is the finding?

    This work found that:

    1. Relay planting enhances yield
    2. Within-field rotation or strip rotation allowing strips for planting other plants (such as grass, fruits) besides the major crop was more fruitful
    3. Soil munching that is, available means such as crop straw, in addition to the major crop such as wheat or rice, and
    4. No-till or reduced tillage, which increases the annual crop yield up by 15.6% to 49.9%, and decreasing the environmental footprint by 17.3%, compared with traditional monoculture cropping

    Various terms mentioned

    [A] Relay planting

    • Relay planting means the planting of different crops in the same plot, one right after another, in the same season.
    • Examples of such relay cropping would be planting rice (or wheat), cauliflower, onion, and summer gourd (or potato onion, lady’s fingers and maize), in the same season.
    • Benefits: It is less risk since you do not have to depend on one crop alone. It also means better distribution of labour, insects spread less, and any legumes actually add nitrogen to the soil.

    [B] Strip cropping

    • Strip cropping has been used in the U.S. (where the fields are larger than those in India), where they grow wheat, along with corn and soybean, in the same farm in an alternative manner.
    • However, this needs large lands. The land is divided into strips, and strips of grass are left to grow between the crops.
    • Benefits: Planting of trees to create shelters has helped in stabilising the desert in Western India.

    [C] Soil mulching and no-till

    • Soil mulching requires keeping all bare soil covered with straw, leaves, and the like, even when the land is in use.
    • Benefits: Erosion is curtailed, moisture retained, and beneficial organisms, such as earthworms, kept in place. The same set of benefits are also offered by not tilling the soil.

    Significance of the findings

    • This research has led to the conclusion that small farm holders can grow more food and have reduced environmental footprint.
    • Current statistics reveal that our country has a significant population of small farmers, many owning less than 2 hectares of land.
    • About 70% of its rural households still depend primarily on agriculture for their livelihood, with 82% of farmers being small and marginal.

     

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