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Subject: Environment

  • Places in news: Weddell Sea

    India has extended support for protecting the Antarctic environment and for co-sponsoring the proposal of the European Union for designating East Antarctica and the Weddell Sea as Marine Protected Areas (MPAs).

    About Weddell Sea

    • The Weddell Sea is part of the Southern Ocean and contains the Weddell Gyre.
    • Its land boundaries are defined by the bay formed from the coasts of Coats Land and the Antarctic Peninsula.
    • Much of the southern part of the sea is covered by a permanent, massive ice shelf field, the Filchner-Ronne Ice Shelf.
    • The sea is contained within the two overlapping Antarctic territorial claims of Argentine Antarctica, the British Antarctic Territory, and also resides partially within the Antarctic Chilean Territory.

    Major ice shelves

    • Various ice shelves, including the Filchner-Ronne Ice Shelf, fringe the Weddell sea.
    • Some of the ice shelves on the east side of the Antarctic Peninsula, which formerly covered roughly 10,000 square kilometres of the Weddell Sea, had completely disappeared by 2002.
    • The Weddell Sea has been deemed by scientists to have the clearest water of any sea.

    India’s support for the Antarctic

    • India supports sustainability in protecting the Antarctic environment.
    • The proposed MPAs are essential to regulate illegal unreported and unregulated fishing.
    • India had urged the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) member countries to ensure Antarctic conservation.
    • India remains associated with the formulation, adaptation and implementation mechanisms of these MPAs in future.

    What is CCAMLR?

    • CCAMLR is an international treaty to manage Antarctic fisheries to preserve species diversity and stability of the entire Antarctic marine ecosystem.
    • CCAMLR came into force in April 1982.
    • India has been a permanent member of the CCAMLR since 1986.
    • Work pertaining to the CCAMLR is coordinated in India by the Ministry of Earth Sciences through its attached office, the Centre for Marine Living Resources and Ecology (CMLRE) in Kochi, Kerala.

    Back2Basics: Marine Protected Areas (MPAs)

    • An MPA is a marine protected area that provides protection for all or part of its natural resources.
    • Certain activities within an MPA are limited or prohibited to meet specific conservation, habitat protection, ecosystem monitoring, or fisheries management objectives.
    • MPAs can be conserved for a number of reasons including economic resources, biodiversity conservation, and species protection.
    • They are created by delineating zones with permitted and non-permitted uses within that zone.

     

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  • Probe shows use of toxic material in firecrackers: Supreme Court

    The Supreme Court has said a preliminary enquiry by the CBI into the firecracker industry, including in Tamil Nadu, revealed rampant violation of its ban on use of toxic ingredients like Barium and its salts.

    Air Pollution created by firecrackers

    • Firing crackers increase the concentration of dust and pollutants in the air.
    • After firing, the fine dust particles get settled on the surrounding surfaces which are packed with chemicals like copper, zinc, sodium, lead, magnesium, cadmium and pollutants like oxides of sulphur and nitrogen.
    • These invisible yet harmful particles affect the environment and in turn, put our health at stake.

    Harmful elements used

    • Copper: Irritates the respiratory tract.
    • Cadmium: Leads to anemia by reducing the capacity of blood to carry oxygen.
    • Zinc: Can cause metal fume fever and induces vomiting.
    • Lead: Harms the nervous system.
    • Magnesium: Metal fume fever is caused by Magnesium fumes.
    • Sodium: It is a highly reactive element and caused burns when it is combined with moisture.

    Why is the issue in news now?

    Ans. Barium content

    • A chemical analysis of the samples of finished and semi-finished firecrackers and raw materials taken from the manufacturers showed Barium content.
    • The court stated that loose quantities of Barium were purchased from the market.
    • Also, firecracker covers did not show the manufacture or expiry dates.

    Issues with Barium

    • Barium nitrate, which emits green flames when a cracker is lit, is a metal oxide that increases both air and noise pollution.
    • There is is no clarity on whether barium nitrate can actually be used or not.

    Alternatives: Green Crackers

    • The new CSIR-NEERI formulation for green crackers has NO barium nitrate — one of the key ingredients of traditional firecrackers.
    • These crackers have been named “safe water releaser (SWAS)”, “safe minimal aluminium (SAFAL)” and “safe thermite cracker (STAR)”.
    • The three crackers release water vapour or air as a dust suppressant and diluent for gaseous emissions.
    • These products can only be manufactured by those who have signed a non-disclosure agreement (NDA) with CSIR-NEERI.
    • The green crackers are sold with a unique logo on the box, and will also have a QR code with production and emission details.

     

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  • Cyclone Gulab

    As a very rare occasion during monsoons, Cyclone Gulab has been developed in the Bay of Bengal and later made landfall close in Andhra Pradesh.

    Tauktae, Amphan, Fani, Titli, Bulbul, Gaja
 And now Gulab. As and when cyclones with intriguing names approach the Indian coasts, a common question comes to our minds: Who names these storms?

     

    This time it is Pakistan, not India, who proposed this name Gulaab!

    About Tropical Cyclones

    • A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure centre, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rains.
    • Depending on its location and strength, a tropical cyclone is referred to by different names, including hurricane, typhoon, tropical storm, cyclonic storm, tropical depression, or simply cyclone.
    • A hurricane is a tropical cyclone that occurs in the Atlantic Ocean and the northeastern Pacific Ocean, and a typhoon occurs in the north-western Pacific Ocean.
    • In the south Pacific or the Indian Ocean, comparable storms are referred to simply as “tropical cyclones” or “severe cyclonic storms”.

    Cyclone Gulab

    • Three factors —in-sync phase of Madden Julian Oscillation (MJO), warm sea surface temperatures over the Bay of Bengal, and the formation of a low-pressure system.
    • The system’s intensification phases between low pressure – well-marked low pressure – depression – deep depression and to finally becoming Cyclone Gulab was rather rapid, even as the system moved closer to the south Odisha – north Andhra Pradesh coast, where it also made landfall.

    What makes Gulab special?

    • India has a bi-annual cyclone season that occurs between March to May and October to December. But on rare occasions, cyclones do occur in June and September months.
    • Cyclones are less common during the June to September monsoon season, as there are limited or almost no favourable conditions for cyclogenesis due to strong monsoon currents.
    • This is also the period when the wind shear — that is, the difference between wind speeds at lower and upper atmospheric levels — is very high.
    • As a result, clouds do not grow vertically and monsoon depressions often fail to intensify into cyclones.
    • So it can be stated that this year, the cyclone season commenced earlier than usual. The last time a cyclone developed in the Bay of Bengal in September was Cyclone Day in 2018.

    Also read

    [Burning Issue] Tropical Cyclones and India

     

     

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  • Arctic ice is disappearing: How clouds interact with sea ice change

    Temperatures in the Arctic, for example, have been rising much faster than the rest of the planet. Experts, for the longest time, have attributed the crisis to how clouds interact with sea ice, essentially frozen seawater.

    Role of Polynya

    • Decades of research have pointed that the losses in Arctic Sea ice cover allow for the formation of more clouds near the ocean’s surface.
    • New research by NASA has now shown that more heat and moisture is released through a large hole in sea ice called a polynya, which fuels the formation of more clouds.
    • This traps heat in the atmosphere and hinders the refreezing of new sea ice.

    What is Polynya?

    • A polynya is an area of open water surrounded by sea ice.
    • It is now used as a geographical term for an area of unfrozen seawater within otherwise contiguous pack ice or fast ice.
    • It refers to a natural ice hole and was adopted in the 19th century by polar explorers to describe navigable portions of the sea.
    • There are two main types of polynyas:
    1. Coastal polynyas, which can be found year-round near the Antarctic and Arctic coasts and are mainly created by strong winds pushing the ice away from the coast, and
    2. Mid-sea or open-ocean polynyas, which may be found more sporadically in the middle of an ice pack in certain locations, especially around Antarctica.

    What is the new research about?

    • The research stated that low clouds over the polynya emitted more energy or heat than clouds in adjacent areas covered by sea ice.
    • The polynya did refreeze, but only after the increased cloud cover and heat under the clouds persisted for about a week.
    • The extra clouds and increased cloud radiative effect to the surface remained for some time after the polynya froze.
    • The sea ice acts like a cap or a barrier between the relatively warm ocean surface and the cold and dry atmosphere above, so more heat and moisture from the ocean into the atmosphere.
    • This warming slows down the growth of the sea ice.

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  • A climate change narrative that India can steer

    A recent report by the Ministry of Earth Sciences (MoES) reveals that India has warmed up 0.7° C during 1901-2018.

    What was the report?

    Title: Assessment of Climate Change over the Indian Region (by MoES)

    (a) Climate severity

    • The 2010-2019 decade was the hottest with a mean temperature of 0.36° C higher than average.
    • Heatwaves continued to increase with no signs of diminishing greenhouse gas emissions despite lower activity since the novel coronavirus pandemic.
    • India may experience a 4.4° C rise by the end of this century.
    • Within 2050, rainfall is expected to rise by 6% and temperature by 1.6° C.
    • India’s Deccan plateau has seen eight out of 17 severe droughts since 1876 in the 21st century (2000-2003; 2015-2018).

    (b) Land degradation

    • To make things worse, India lost about 235 square kilometres to coastal erosion due to climate change-induced sea-level rise, land erosion and natural disasters such as tropical cyclones between 1990-2016.

    (c) Rising Internal Displacement

    • According to the Internal Displacement Monitoring Centre, India’s Internally Displaced Populations (IDPs) are rising due to damaging climate events.
    • Uttarakhand residents began deserting their homes after the Kedarnath floods in 2013 due to heavy precipitation that increases every year.
    • Recent figures are more alarming with 3.9 million displaced in 2020 alone, mostly due to Cyclone Amphan.

    India’s commitment to Climate Mitigation

    • India held the top 10 position for the second year in a row in 2020’s Climate Change Performance Index (CCPI).
    • The country received credit under all of the CCPI’s performance fields except renewable energy where India performed medium.
    • India vowed to work with COP21 by signing the Paris Agreement to limit global warming and submitted the Nationally Determined Contributions (NDCs).
    • It set a goal of reducing emissions intensity of GDP by 33%-35% and increasing green energy resources (non-fossil-oil based) to 40% of installed electric power capacity by 2030.
    • India cofounded with France at COP21, in 2015, the International Solar Alliance (ISA).

    Core concern

    (a) Good policies, weak practices

    • The question is, are these global alliances and world-leading policies being practised or are merely big promises with little implementation?
    • Despite leading ISA, India performed the least in renewable energy according to the CCPI’s performance of India.

    (b) Low compliance

    • India is not fully compliant with the Paris Agreement’s long-term temperature goal of the NDCs and there are still risks of falling short of the 2° C goal.
    • According to India’s carbon emission trajectory, the country is en route to achieve barely half of the pledged carbon sink by 2030.
    • To achieve the Paris Agreement’s NDC target, India needs to produce 25 million-30 million hectares of forest cover by 2030 — a third of current Indian forestation and trees.
    • Going by the facts, it seems India has overpromised on policies and goals as it becomes difficult to deliver on the same.

    Why COP26 matters

    • The Glasgow COP26 offers India a great opportunity to reflect on the years since the Paris Agreement and update NDCs to successfully meet the set targets.
    • India is expected to be the most populated country by 2027, overtaking China, contributing significantly to the global climate through its consumption pattern.
    • India is in a rather unique position to have a significant influence on global climate impact in the new decade.

    Conclusion

    • India believes that climate actions must be nationally determined.
    • However, the Paris Agreement for developing countries should be at the core of decision-making.
    • India has the ability to improve its global positioning by leading a favourable climate goal aspiration for the world to follow.
    • The country has the opportunity to not only save itself from further climate disasters but also be a leader in the path to climate change prevention.

    Back2Basics: COP26, Glasgow

    • The 2021 United Nations Climate Change Conference, also known as COP26, is the 26th United Nations Climate Change conference.
    • It is scheduled to be held in the city of Glasgow, Scotland between 31 October and 12 November 2021, under the presidency of the United Kingdom.
    • This conference is the first time that Parties are expected to commit to enhanced ambition since COP21.
    • Parties are required to carry out every five years, as outlined in the Paris Agreement, a process colloquially known as the ‘ratchet mechanism’.

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  • Wastewater Treatment in India

    Sewage treatment plants (STPs) in India are able to treat a little more than a third of the sewage generated per day, according to the latest report of the Central Pollution Control Board (CPCB).

    What is Wastewater?

    Wastewater is used water from any combination of domestic, industrial, commercial or agricultural activities, surface runoff/ stormwater, and any sewer inflow or sewer infiltration.

    In everyday usage, wastewater is commonly a synonym for:

    • Sewage also called domestic wastewater or municipal wastewater which is wastewater that is produced by a community of people.
    • Industrial wastewater, water-borne waste generated from a variety of industrial processes, such as manufacturing operations, mineral extraction, power generation, or water and wastewater treatment.
    • Cooling water, released with potential thermal pollution after use to condense steam or reduce machinery temperatures by conduction or evaporation
    • Leachate, precipitation containing pollutants dissolved while percolating through ores, raw materials, products, or solid waste
    • Return flow, carrying suspended soil, pesticide residues, or dissolved minerals and nutrients from irrigated cropland
    • Surface runoff, the flow of water occurring on the ground surface when excess rainwater, stormwater, meltwater, or other sources, can no longer sufficiently rapidly infiltrate in the soil.
    • Urban runoff, including water used for outdoor cleaning activity and landscape irrigation in densely populated areas created by urbanization
    • Agricultural wastewater, generated from confined animal operations

    Wastewater in India

    • India generated 72,368 MLD (million litres per day) whereas the installed capacity of STPs was 31,841 MLD (43.9 per cent), according to the report.

    Treatment facilities available

    • Of this installed capacity, developed and operationalized capacity was 26,869 MLD (84 per cent).
    • Of the total operationalised capacity, 20,235 MLD (75 per cent) was the actual utilised capacity.
    • In other words, out of total 72,368 MLD sewage generated every day, only 20,235 MLD is treated.

    Skewed distribution

    • Five states and Union Territories (UT) — Maharashtra, Gujarat, Uttar Pradesh, Delhi and Karnataka — account for 60 per cent of the total installed treatment capacity of the country.
    • These, along with five other states and UTs — Madhya Pradesh, Haryana, Punjab, Tamil Nadu and Rajasthan — alone constitute 86 per cent of the total installed capacity.
    • Arunachal Pradesh, Andaman & Nicobar Islands, Lakshadweep, Manipur, Meghalaya and Nagaland have not installed sewage treatment plants.
    • There are states like Bihar which do have a small installed capacity of STPs. But on the operational front, they score a zero.
    • Chandigarh ranks first in terms of total sewage generated to what is actually treated. It generates 188 MLD of sewage and has an operational capacity to treat 271 MLD.

    Major issue: Reuse of sewage

    • The reuse of treated sewage is an issue which hasn’t assumed much importance in the policy planning of many state governments.
    • Treated sewage water can be reused for horticulture, irrigation, washing activities (road, vehicles and trains), fire-fighting, industrial cooling, toilet flushing and gardening.
    • The proportion of the reuse of treated sewage is maximum in Haryana (80 per cent) followed by Puducherry (55 per cent), Delhi (50 per cent), Chandigarh (35 per cent), Tamil Nadu (25 per cent), Madhya Pradesh (20 per cent) and Andhra Pradesh (5 per cent).

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  • WHO tightens Global Air Quality norms

    The World Health Organisation (WHO) in its first-ever update since 2005 has tightened global air pollution standards.

    Global Air Quality Guidelines (AQGs) 2021

    • WHO announces limits for six pollutant categories —particulate matter (PM) 2.5 and 10, ozone (O3), nitrogen dioxide (NO2) sulphur dioxide (SO2) and carbon monoxide (CO).

    Air quality standards in India

    • India aligns with the WHO guidelines only in the case of ozone and carbon monoxide, as these have not changed. But both NO2 and SO2 guidelines are tighter than the current Indian standard.
    • The move doesn’t immediately impact India as the National Ambient Air Quality Standards (NAAQS) don’t meet the WHO’s existing standards.
    • The government has a dedicated National Clean Air Programme that aims for a 20% to 30% reduction in particulate matter concentrations by 2024 in 122 cities, keeping 2017 as the base year.

    Significance of WHO’s AQG

    Ans. It sets the stage for eventual shifts in policy

    • WHO move sets the stage for eventual shifts in policy in the government towards evolving newer stricter standards.
    • This will soon become part of policy discussions — much like climate targets to reduce greenhouse gas emissions keep getting stricter over time.
    • Once cities and States are set targets for meeting pollution emission standards, it could lead to overall changes in national standards.

    Challenges for India

    • The current challenge in India is to meet its national ambient air quality standards in all the regions.
    • The hard lockdown phases during the pandemic have demonstrated the dramatic reduction that is possible when local pollution and regional influences can be minimised.
    • This has shown that if local action is strengthened and scaled up at speed across the region, significant reduction to meet a much tighter target is possible.
    • The influence of geo-climatic attributes is quite pronounced in all regions of India, which further aggravates the local build-up of pollution.
    • This is further worsened due to the rapid proliferation of pollution sources and weak air quality management systems.
    • India may require a more nuanced regional approach to maximise benefits and sustain air quality gains.

    Conclusion

    • Air pollution is a threat to health in all countries, but it hits people in low- and middle-income countries the hardest.
    • WHO’s new Air Quality Guidelines are an evidence-based and practical tool for improving the quality of the air on which all life depends.

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  • Rhino Horn Reverification Exercises

    Assam will mark World Rhino Day — September 22 — with a special ceremony by burning a stockpile of nearly 2,500 horns of the one-horned rhinoceros.

    Rhino Horn Reverification

    • The public ceremony — scheduled at Bokakhat in Kaziranga National Park (KNP) has been publicized as a “milestone towards rhino conservation” aimed at “busting myths about rhino horns”.
    • It’s a loud and clear message to the poachers and smugglers that such items have no value.
    • Thus the case for the destruction of horns — a process that is in compliance with Section 39(3)(c) of the Wildlife (Protection) Act of 1972.

    Why are Rhinos poached for horns?

    • Ground rhino horn is used in traditional Chinese medicine to cure a range of ailments, from cancer to hangovers, and also as an aphrodisiac.
    • In Vietnam, possessing a rhino horn is considered a status symbol.
    • Due to demand in these countries, poaching pressure on rhinos is ever persistent against which one cannot let the guard down.

    Try this PYQ:

    Consider the following statements:

    1. Asiatic lion is naturally found in India only.
    2. Double-humped camel is naturally found in India only.
    3. One-horned rhinoceros is naturally found in India only.

    Which of the statements given above is/are correct?

    (a) 1 only

    (b) 2 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

     

    [wpdiscuz-feedback id=”smpw6l0h7x” question=”Please leave a feedback on this” opened=”1″]Post your answers here.[/wpdiscuz-feedback]

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    Back2Basics: Indian Rhino

    • The Indian rhinoceros also called the greater one-horned rhinoceros and great Indian rhinoceros is a rhinoceros native to the Indian subcontinent.
    • It is listed as Vulnerable on the IUCN Red List and Schedule I animal in the Wildlife Protection Act, 1972.
    • It once ranged across the entire northern part of the Indian Subcontinent, along the Indus, Ganges and Brahmaputra River basins, from Pakistan to the Indian-Myanmar border.
    • Poaching for rhinoceros horn became the single most important reason for the decline of the Indian rhino.

  • [pib] Kovalam & Eden Beaches gets Blue Fag Certification

     

    The international eco-label “Blue Flag”, has accorded the Blue Flag Certification for 2 new beaches this year –Kovalam in Tamil Nadu and Eden in Puducherry beaches.

    With this India now has 10 International Blue Flag beaches.

    Which are the other 8 beaches?

    1. Shivrajpur (Dwarka-Gujarat)
    2. Ghoghla (Diu)
    3. Kasarkod (Karnataka) [NOT Kasargod which is in Kerala] and
    4. Padubidri (Karnataka)
    5. Kappad (Kerala)
    6. Rushikonda (AP)
    7. Golden Beach (Odisha) and
    8. Radhanagar (A&N Islands)

    Blue Flag Beaches

    • The ‘Blue Flag’ beach is an ‘eco-tourism model’ and marks out beaches as providing tourists and beachgoers clean and hygienic bathing water, facilities/amenities, a safe and healthy environment, and sustainable development of the area.
    • The certification is accorded by the Denmark-based Foundation for Environment Education.
    • It started in France in 1985 and has been implemented in Europe since 1987, and in areas outside Europe since 2001 when South Africa joined.
    • It has 33 stringent criteria under four major heads for the beaches, that is, (i) Environmental Education and Information (ii) Bathing Water Quality (iii) Environment Management and Conservation and (iv) Safety and Services.

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  • Species in news: Sea Cucumber

    In a swift operation, the Indian Coast Guard (ICG) at Mandapam, Tamil Nadu seized two tonnes of sea cucumber, a banned marine species.

    Sea Cucumbers

    • Sea cucumbers are part of a larger animal group called echinoderms, which also contains starfish and sea urchins.
    • Their body shape is similar to a cucumber, but they have small tentacle-like tube feet that are used for locomotion and feeding.
    • One way that sea cucumbers can confuse or harm predators is by propelling their own toxic internal organs from their bodies in the direction of an attacker.
    • The organs grow back, and it may save them from being eaten.
    • They are found in virtually all marine environments throughout the world, from shallow to deep-sea environments.
    • They are benthic, meaning they live on the ocean floor. However, their larvae are planktonic, meaning they float in the ocean with the currents.

    Conservation status

    • Sea cucumber in India is treated as an endangered species listed under schedule I of Wildlife Protection Act of 1972.
    • It is primarily smuggled from Tamil Nadu to Sri Lanka in fishing vessels from Ramanathapuram and Tuticorin districts.

    (IUCN status is not available for this species)

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