đŸ’„Join UPSC 2027,2028 Mentorship (July Batch) + XFactor Notes & Microthemes PDF
Talk to Mentor

Civilsdaily

Login

Subject: Environment

  • [pib] Himalayan Geothermal Springs release huge amount of carbon dioxide in the atmosphere

    The Himalayas, which hosts about 600 geothermal springs needs to be considered while estimating emissions to the carbon cycle and thereby to global warming says, Indian researchers.

    Note the following hot springs in India:

    1) Panamik in Nubra valley

    2) Kheer Ganga in Kullu, Himachal

    3) Manikaran Sahib, Himachal

    4) Tattapani, Chhattisgarh

    5) Gaurikund, Uttarakhand

    6) Yumthang, Sikkim

    7) Reshi, Sikkim

    Geothermal springs

    • Geothermal or Hot springs are heated by shallow intrusions of magma (molten rock) in volcanic areas. Some thermal springs, however, are not related to volcanic activity.
    • The water is heated by convective circulation: groundwater percolates downward & reaches depths of a kilometre or more where the temperature of rocks is high because of the normal temperature gradient of the Earth’s crust.

    Why consider the Himalayas?

    • The Himalayan geothermal springs which cover about 10,000 square km in the Garhwal region of Himalaya show a significant discharge of CO2 rich water.
    • The estimated carbon dioxide degassing (removal of dissolved gases from liquids, especially water or aqueous solutions) flux is nearly 7.2 ×106 mol/year to the atmosphere.
    • Such CO2 degassing should be taken into account to assess global carbon outflux in the earth’s atmosphere.

    Where does this CO2 come from?

    • Carbon outflux from Earth’s interior to the exosphere through volcanic eruptions, fault zones, and geothermal systems contribute to the global carbon cycle that effects short and long term climate of the Earth.
    • The CO2 in the thermal springs are sourced from metamorphic decarbonation of carbonate rocks present deep in the Himalayan core along with magmatism and oxidation of graphite.
    • Most of the geothermal water is dominated by evaporation followed by weathering of silicate rocks.
    • Isotopic analyses further point towards a meteoric source for geothermal water.

  • In news: Mount Sinabung

    The Mount Sinabung volcano in Indonesia has erupted spouting ash at least 5,000 metres high into the sky.

    In the Philippines, a volcano called Taal on the island of Luzon; 50 km from Manila has recently erupted in January. Note all such recent eruption in news.

    Also, try this PYQ:

    Consider the following statements:

    1. The Barren Island volcano is an active volcano located in the Indian Territory.
    2. Barren Island lies about 140 km east of Great Nicobar
    3. The last time the Barren Island volcano erupted was in 1991 and it has remained inactive since then.

    Which of the statements given above is/are correct? (CSP 2018)

    (a) 1 only

    (b) 2 and 3 only

    (c) 3 only

    (d) 1 and 3

    Mount Sinabung

    • It is a Pleistocene-to-Holocene stratovolcano in the Karo plateau of Karo Regency, North Sumatra, Indonesia.
    • It is created by the subduction of the Indo-Australian Plate under the Eurasian Plate.
    • It erupted in 2010 after a 400-year-long hiatus and has been continuously active since September 2013.

  • Boreal Summer Intra-Seasonal Oscillation (BSISO)

    Researchers at the Indian National Centre for Ocean Information Services (INCOIS), Hyderabad have reportedly found a way to better forecast the Boreal Summer Intra-Seasonal Oscillation (BSISO).

    Try this PYQ:

    Q.With reference to ‘Indian Ocean Dipole (IOD)’ sometimes mentioned in the news while forecasting Indian monsoon, which of the following statements is/are correct? (CSP 2017)

    1. IOD phenomenon is characterized by a difference in sea surface temperature between tropical Western Indian Ocean and tropical Eastern Pacific Ocean.
    2. An IOD phenomenon can influence an El Nino’s impact on the monsoon.

    Select the correct answer using the code given below:

    (a) 1 only

    (b) 2 only

    (c) Both 1 and 2

    (d) Neither 1 nor 2

    What is BSISO?

    • The BSISO of the Asian summer monsoon (ASM) is one of the most prominent sources of short-term climate variability in the global monsoon system.
    • It is the movement of convection (heat) from the Indian Ocean to the western Pacific Ocean roughly every 10-50 days during the monsoon (June-September).
    • Compared with the related Madden-Julian Oscillation (MJO) it is more complex in nature, with prominent northward propagation and variability extending much further from the equator.
    • It represents the monsoon’s ‘active’ and ‘break’ periods, in which weeks of heavy rainfall give way to brilliant sunshine before starting all over again.
    • The active phase also enhances monsoon winds and hence the surface waves.

    Why predict BSISO behaviour?

    • Some phases of boreal summer intraseasonal oscillation or BSISO induce high wave activity in the north Indian Ocean and the Arabian Sea, the researchers claimed.
    • Wave forecast advisories based on the BSISO would be more useful for efficient coastal and marine management.
    • This finding has a great significance in developing seasonal and climate forecast service for waves and coastal erosion for India.

  • Twin issues: Shrinking water bodies and floods in urban landscapes

    This newscard is an excerpt from the original article published in the D2E.

    Try this question for mains:

    Q.Shrinking water bodies and floods in urban landscapes are mutually induced by each other. Analyse.

    Water in urban landscapes

    • Lakes and wetlands are an important part of the urban ecosystem.
    • They perform significant environmental, social and economic functions — from being a source of drinking water and recharging groundwater to supporting biodiversity and providing livelihoods.
    • Their role becomes even more critical in the present context when cities are facing the challenge of rapid unplanned urbanisation.
    • Their numbers are declining rapidly. For example, Bangalore had 262 lakes in the 1960s; now only 10 of them hold water.

    Issues with urban water bodies

    • Natural streams and watercourses, formed over thousands of years due to the forces of flowing water in the respective watersheds, have been altered because of urbanisation.
    • As a result, the flow of water has increased in proportion to the urbanisation of watersheds.
    • Ideally, natural drains should have been widened to accommodate the higher flows of stormwater.
    • But, on the contrary, they have been a victim of various unlawful activities:

    (1) Pollution

    • There has been an explosive increase in the urban population without a corresponding expansion of civic facilities such as infrastructure for the disposal of waste.
    • As more people are migrating to cities, urban civic services are becoming less adequate.
    • As a result, most urban water bodies in India are suffering because of pollution. The water bodies have been turned into landfills in several cases.
    • Guwahati’s Deepor Beel, for example, is used by the municipal corporation to dump solid waste since 2006. Even the Pallikarni marshland in Chennai is used for solid waste dumping.

    (2) Encroachment

    • This is another major threat to urban water bodies. As more people have been migrating to cities, the availability of land has been getting scarce.
    • Today, even a small piece of land in urban areas has a high economic value.
    • These urban water bodies are not only acknowledged for their ecosystem services but for their real estate value as well.
    • Charkop Lake in Maharashtra, Ousteri Lake in Puducherry, Deepor beel in Guwahati are well-known examples of water bodies that were encroached.

    (3) Illegal mining activities

    • Illegal mining for building material such as sand and quartzite on the catchment and bed of the lake have an extremely damaging impact on the water body.
    • For example, the Jaisamand Lake in Jodhpur, once the only source of drinking water for the city, has been suffering from illegal mining in the catchment area.
    • Unmindful sand mining from the catchment of Vembanad Lake on the outskirts of Kochi has decreased the water level in the lake.

    (4) Unplanned tourism activities

    • Using water bodies to attract tourists has become a threat to several urban lakes in India.
    • Tso Morari and Pongsho lakes in Ladakh have become polluted because of unplanned and unregulated tourism.
    • Another example is that of Ashtamudi Lake in Kerala’s Kollam city, which has become polluted due to spillage of oil from motorboats.

    (5) Absence of administrative framework

    • The biggest challenge is the government apathy towards water bodies.
    • This can be understood from the fact that it does not even have any data on the total number of urban water bodies in the country.
    • Further, CPCB had not identified major aquatic species, birds, plants and animals that faced threat due to pollution of rivers and lakes.

    Original article:

    https://www.downtoearth.org.in/news/urbanisation/two-sides-of-the-same-coin-shrinking-water-bodies-and-urban-floods-72702

  • Ammonium Nitrate:  Behind the massive explosion in Beirut

    The catastrophic explosion at Beirut port, Lebanon caused by the blast of over 2,700 tonnes of ammonium nitrate, has rocked the world.

    Practice question:

    Q. Despite a robust policy framework governing the hazardous chemicals in India, the recent gas leakage incident in Vizag highlights India’s unaddressed vulnerability to chemical disasters. Critically comment.

    What is Ammonium Nitrate?

    • In its pure form, ammonium nitrate (NH4NO3) is a white, crystalline chemical which is soluble in water.
    • A common chemical ingredient of agricultural fertilizers, the nitrogen-rich compound is also the main component of the explosive composition known as ANFO — ammonium nitrate fuel oil.
    • It is the main ingredient in the manufacture of commercial explosives used in mining and construction.
    • Many Improvised Explosive Devices (IEDs) used by terrorists around the world have ANFO as the main explosive, triggered by primary explosives like RDX or TNT.
    • In the majority of terror attacks in India, ammonium nitrate has been used along with initiator explosives like RDX.

    Ammonium nitrate as an explosive

    • Pure ammonium nitrate is not an explosive on its own.
    • It is classified as an oxidiser (Grade 5.1) under the UN classification of dangerous goods.
    • If mixed with ingredients like fuel or some other contaminants, or because of some other external factors, it can be very explosive.

    Stored ammonium nitrate is a major fire hazard

    • Large quantities of stored ammonium nitrate are regarded as a major fire hazard, with multiple reported cases across the world.
    • The explosion of large storage can happen primarily in two ways.
    • One is by some type of detonation or initiation because the storage comes in contact with the explosive mixture.
    • Second, the blast can result due to a fire which starts in the ammonium nitrate store because of the heat generated due to the oxidation process at large scale.

    Regulations in India about ammonium nitrate

    • Because it is used as an ingredient for the production of explosives, anaesthetic gases, fertilizers, cold packs and has a possibility of misuse, it is highly regulated in India.
    • There exists the Ammonium Nitrate Rules, 2012, under The Explosives Act, 1884.
    • It defines ammonium nitrate as the compound with formula NH4NO3 including any mixture or compound having more than 45 per cent ammonium nitrate by weight.
    • The manufacture, conversion, bagging, import, export, transport, possession for sale or use of ammonium nitrate is covered under The Ammonium Nitrate Rules, 2012.
    • The rules also make storage of ammonium nitrate in large quantities in populated areas illegal in India.
    • For the manufacture of ammonium nitrate, an Industrial licence is required under the Industrial Development and Regulation Act, 1951.

  • In news: Pokkali Rice

    Farmers from West Bengal are betting on the Pokkali variety of rice from Kerala to tide over a crisis-like situation created by severe seawater incursion into paddy fields in vast areas of the Sundarbans after the cyclone Amphan.

    Try this MCQ:

    Q.Which of the following is the striking feature of the Pokkali Rice recently seen in the news?

    a) It is bio-fortified rice for treating malnutrition

    b) It is a saltwater resistant variety of rice

    c) It is healthy rice used to treat diabetes

    d) None of these

    Pokkali Rice

    • The Pokkali variety of rice is known for its saltwater resistance and flourishes in the rice paddies of coastal Alappuzha, Ernakulam and Thrissur districts.
    • The uniqueness of the rice has brought it the Geographical Indication (GI) tag and is the subject of continuing research.
    • It had been in the news because of its uniqueness and also because a group of people in Kerala have been trying to revive the cultivation of the rice variety in the State.

    Why introduce in Sunderbans?

    • About 80% of the rice paddies in the Sundarbans faced the problem of the saltwater incursion.
    • If the Pokkali experiment succeeds, it would be a good step to turn around the fortunes of the farmers.

  • Species in news: Indian Peafowl

    This newscard is an excerpt from the original article published in the D2E.

    Try this PYQ:

    Q.Which one of the following is the national aquatic animal of India? (CSP 2015)

    (a) Saltwater crocodile

    (b) Olive ridley turtle

    (c) Gangetic dolphin

    (d) Gharial

    Indian Peafowl

    • The Indian peafowl is a native of India and some parts of Pakistan and Sri Lanka.
    • The Arakan hills prevented their spread further east while the Himalayas and the Karakoram did so northwards.
    • As our national bird, the peacock has the utmost level of legal protection.

    Peacock vs. Peafowl

    • Only the males of the species are peacocks.
    • The females are properly called peahens, while young birds less than a year old are known as peachicks.
    • Collectively they are known as peafowl, regardless of age or gender.
    • Peacocks are male Indian peafowl (Pavo cristatus) belonging to the Phasianidae family

    Various protections

    • It comes under Section 51 (1-A) of Schedule I of the Wild (Life) (Protection) Act, 1972, with imprisonment that may be extended up to seven years, along with a fine that shall not be less than Rs 10,000.
    • Since 2014, Indian Peafowl has been protected under Appendix III of the CITES.
    • They are listed under the ‘Least Concern’ (LC) category of the IUCN Red Data List.

    Threats

    • Despite this, these birds experienced dwindling populations for many decades due to habitat loss, poaching and contamination of their food sources.
    • In 1991, the peafowl population census conducted by the WWF  revealed that 50 per cent of the species had declined, compared to their number at the time of independence.

  • EV battery recycling in India: An opportunity for change

    This newscard is an excerpt from the original article published in the D2E. It focuses on India for not having adequate legislations that can prevent illegal dumping of spent lithium batteries ahead of the FAME-I and II scheme.

    Practice question for mains:

    Q.What are the different phases of Faster Adoption and Manufacturing of (Hybrid &) Electric Vehicles (FAME) Scheme? Discuss various challenges in adopting EV technology in India.

    Background

    • Electric vehicles (EV) are a part of the new normal as the global transportation sector undergoes a paradigm shift, with a clear preference towards cleaner and greener vehicles.
    • Like its western counterparts and China, India has pushed the mandate for EVs as well, through schemes such as Faster Adoption and Manufacturing of Hybrid and Electric Vehicles (FAME) I and FAME II.
    • EV sales in the country are expected to grow annually at a compound annual growth rate of 35 per cent till 2026, according to a market survey by news daily Economic Times.

    Powering the EVs

    • Initially, EVs were powered with lead-acid batteries. Lithium-ion batteries that include other chemical moieties like cobalt, graphite and nickel now form the heart of an EV.
    • At the end of the battery lifespan, what remains is battery waste, comprising enormous amounts of chemicals such as cobalt, electrolytes, lithium, manganese oxide and nickel.

    Latent threats to India

    • India, at present, is underprepared for the sheer volume of EV battery waste expected in the coming decade.
    • Most of our e-waste is dumped in landfills.
    • Further, we do not have adequate legislation that can prevent illegal dumping of spent lithium batteries.
    • This sets a dangerous precedent, as India can potentially become a lithium waste dumpsite for not just waste from domestic EVs, but also from import of spent batteries.

    There is a legal loophole

    • The most recent legislations — the E-waste (Management and Handling) Rules, 2011, E-waste (Management and Handling) Rules, 2016 and E-waste (Management) Amendment Rules, 2018 — evolved considerably in terms of the range of materials.
    • They do not, however, include a cohesive set of rules for the safe disposal of EV batteries.
    • Li-ion batteries, thus, find no mention, in any framework for end-of-life treatment or recycling.

    Threats posed by un-recycled batteries

    • The batteries constitute substances that — if not recycled or treated in a proper fashion — can cause harm to both the environment and humans.
    • Further, lithium itself spontaneously reacts with moisture and can lead to major landfill explosions.

    Global precedence over batteries regulation:

    Several nations are ahead of the curve and have mandated legislations that deal with battery recycling and treatment:

    (1) EU Batteries Directive

    • The Batteries Directive was issued by the European Union to minimise the negative impact of batteries and accumulators on the environment.
    • The Batteries Directive broke down the different stages of the process of collection and recycling of waste batteries and issued directions on how each of these must be performed.

    (2) Germany

    • Germany puts a legal obligation on producers to collect their products from the consumer and deposit them in containers managed by the GRS Batterien Foundation.
    • It is set up by leading battery manufactures and the German Electrical and Electronics Industry Association in 1998.
    • It ensures collected waste is segregated and sorted according to electrochemical composition — leading to efficient extraction of materials that can be recovered and recycled.

    (3) Japan

    • The Japan Battery Recycling Centre (JBRC), established in 2004, is a producer-responsibility organisation that helps keep the process of recycling waste batteries going.
    • Consumers and offices — that utilise technology running on batteries — discharge delivery to collection sites placed with retailers who register with the JBRC as co-operation shops for recycling.
    • The collection sites facilitate segregation of the batteries by providing four different types of labels for four different types of batteries.

    Where does India stand among these?

    • The Indian e-waste legal regime underwent a tremendous change over time and has only recently embraced EPR and collection of e-waste.
    • A lack of clear scientific guidelines and regulations tailor-made for li-ion batteries, however, leads to poor return of investments in setting up recycling units, as it is a capital-intensive initiative.
    • In October 2019, the framing of a much-awaited recycling policy was proposed by the Union government.
    • It is, however, still awaited. The first step to creating a circular economy for EV batteries is to expand our laws to include li-ion battery chemistries.

    We are late but not the last

    • Large quantities of EV battery waste presented a unique opportunity to nurture a domestic recycling industry, which is currently in its infancy.
    • The process of recycling can help recover up to half the valuable metals, including aluminium, cobalt, copper, lithium, manganese and nickel, which can then be used for secondary applications.
    • Tata Chemicals Ltd, for example, commissioned a li-ion battery recycling plant in Maharashtra in 2019.

    Way forward

    • Governments must take a proactive stance when it comes to the development of batteries that cause less harm to the environment.
    • There must be an extended producer responsibility (EPR) mechanism that ensured manufacturers of batteries to bear a legal obligation of their products being safely recycled and disposed of.

    Back2Basics: Faster Adoption and Manufacturing of (Hybrid &) Electric Vehicles

    FAME I

    • In this phase, market creation through demand incentives was aimed at incentivizing all vehicle segments i.e. 2-Wheelers, 3-Wheelers Auto, Passenger 4-Wheeler vehicles, Light Commercial Vehicles and Buses.
    • The demand incentive was available to buyers of EV in the form of an upfront reduced purchase price to enable wider adoption.

    FAME II

    • This phase will mainly focus on supporting electrification of public & shared transportation, and aims to support through subsidies 7000 e-Buses, 5 lakh e-3 Wheelers, 55000 e-4 Wheeler Passenger Cars and 10 lakh e-2 Wheelers.
    • The scheme will be applicable mainly to vehicles used for public transport or those registered for commercial purposes in e-3W, e-4W and e-bus segments.
    • However, privately-owned registered-2W will also be covered under the scheme as a mass segment.
    • In addition, the creation of charging infrastructure will be supported in selected cities and along major highways to address range anxiety among users of electric vehicles.

    Original article:

    https://www.downtoearth.org.in/blog/pollution/electric-vehicle-battery-recycling-in-india-an-opportunity-for-change-72621

  • [pib] National Transit Pass System (NTPS)

    Environment Minister has launched piloting of the National Transit Pass System for seamless movement of forest produce.

    Try this MCQ:

    Q.The National Transit Pass System (NTPS) recently seen in news is related to:

    (a) Transport of Forest Produces

    (b) Transport through National Waterways

    (c) Inter-state transport during restrictions

    (d) None of these

    About National Transit Pass System

    • The NTPS is an online system for issuing transit permits for timber, bamboo and other forest produce.
    • This system helps in monitoring and keeping records of transit permits for inter-state and intra-state transportation of timber and bamboo from private lands/government/private depot and other minor forest produce.
    • E-pass will be issued for transit through the desktop-based web portal as well as a mobile application.
    • It will bring ease of business and expedite the issuance of transit permits for timber, bamboo and other minor forest produce without physically going to forest offices.
    • It will be functional in Madhya Pradesh and Telangana for now on a pilot basis.

  • In news: Galapagos Islands

    Chinese ships are frequently entering Ecuador’s waters for commercial fishing near the Galapagos Islands.

    Try this question from CSP 2018:

    Q.Which one of the following can one comes across if one travels through the Strait of Malacca?

    (a) Bali

    (b) Brunei

    (c) Java

    (d) Singapore

    The Galapagos Islands

    • Renowned worldwide for its unique species, the islands host a wide array of aquatic wildlife, including marine iguanas, fur seals, and waved albatrosses.
    • The giant tortoises found here – ‘GalĂĄpagos’ in old Spanish– give the islands its name.
    • Ecuador made a part of the Galapagos a wildlife sanctuary in 1935, and the sanctuary became the Galapagos National Park in 1959.
    • In 1978, the islands became UNESCO’s first World Heritage Site.
    • It was here that the British naturalist Charles Darwin made key observations in 1835 that shaped his theory of evolution. Darwin described the islands as a “world in itself”.