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Subject: Climate Change

1. Global Warming and Issues
2. All about Pollution

  • What is Climate Vulnerability Index?

    Environmental think tank Council on Energy, Environment and Water has carried a first-of-its-kind district-level climate vulnerability assessment, or Climate Vulnerability Index (CVI).

    Climate Vulnerability Index

    • The Index takes into account certain indicators when assessing the preparedness of a state or district.
    • It considers:
    1. Exposure (that is whether the district is prone to extreme weather events)
    2. Sensitivity (the likelihood of an impact on the district by the weather event)
    3. Adaptive capacity (what the response or coping mechanism of the district is)

    Significance of CVI

    • CVI helps map critical vulnerabilities and plan strategies to enhance resilience and adapt by climate-proofing communities, economies and infrastructure.
    • Instead of looking at climate extremes in isolation, the study looks at the combined risk of hydro-met disasters, which is floods, cyclones and droughts, and their impact.
    • The study does not take into consideration other natural disasters such as earthquakes.

    Why does India need a climate vulnerability index?

    • According to Germanwatch’s 2020 findings, India is the seventh-most vulnerable country with respect to climate extremes.
    • Extreme weather events have been increasing in the country such as supercyclone Amphan in the Bay of Bengal, which is now the strongest cyclone to be recorded in the country.
    • Recent events such as the landslides and floods in Uttarakhand and Kerala, have also increased in the past decade.
    • Further, the IPCC states that every degree rise in temperature will lead to a three per cent increase in precipitation, causing increased intensification of cyclones and floods.

    Key findings of the CVI

    According to CVI, Assam, Andhra Pradesh, Maharashtra, Karnataka and Bihar are most vulnerable to extreme climate events such as floods, droughts and cyclones in India.

    • 183 hotspot districts are highly vulnerable to more than one extreme climate events
    • 60% of Indian districts have medium to low adaptive capacity in handing extreme weather events – these districts don’t have robust plans in place to mitigate impact
    • North-eastern states are more vulnerable to floods
    • South and central are most vulnerable to extreme droughts
    • 59 and 41 per cent of the total districts in the eastern and western states, respectively, are highly vulnerable to extreme cyclones.

    Best performing states

    • Kerala and West Bengal have performed well comparatively, despite both being coastal states and dealing with the threat of cyclones and floods annually.
    • The reason why these states have performed better is that they have stepped up their climate action plans as well as preparedness to handle an extreme weather event.

    Key recommendations

    • Develop a high-resolution Climate Risk Atlas (CRA) to map critical vulnerabilities
    • Establish a centralised climate-risk commission to coordinate the environmental de-risking mission.
    • Undertake climate-sensitivity-led landscape restoration focused on rehabilitating, restoring, and reintegrating natural ecosystems as part of the developmental process.
    • Integrate climate risk profiling with infrastructure planning to increase adaptive capacity.
    • Provide for climate risk-interlinked adaptation financing by creating innovative CVI-based financing instruments that integrate climate risks for an effective risk transfer mechanism.

     

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  • Sundarbans among 5 sites with highest ‘Blue Carbon’ globally

    India’s Sundarbans National Park is among five sites that have the highest blue carbon stocks globally, according to a new assessment.

    Highlights of the study

    • ‘World Heritage forests’ are now releasing more carbon than they are absorbing, primarily due to human activity and climate change, according to the assessment.
    • UNESCO lists 50 sites across the globe for their unique marine values. These represent just one per cent of the global ocean area.
    • But they comprise at least 15 per cent of global blue carbon assests.

    Try this question from CSP 2021:

    Q. What is blue carbon?

    (a) Carbon captured by oceans and coastal ecosystems

    (b) Carbon sequestered in forest biomass and agricultural soils

    (c) Carbon contained in petroleum and natural gas

    (d) Carbon present in atmosphere

     

    [wpdiscuz-feedback id=”l9htqze5i9″ question=”Please leave a feedback on this” opened=”1″]Post your answers here.[/wpdiscuz-feedback]

    Carbon capacity of Sundarbans

    • The Sundarbans National Park has stores of 60 million tonnes of carbon (Mt C).
    • The other four sites besides the Sundarbans National Park in India are:
    1. Bangladeshi portion of the Sundarbans (110 Mt C)
    2. Great Barrier Reef in Australia (502 Mt C)
    3. Everglades National Park in the US (400 Mt C) and
    4. Banc d’Arguin National Park in Mauritania (110 Mt C)

    About Sundarbans

    • Sundarbans is the largest delta and mangrove forest in the world.
    • The Indian Sunderbans, which covers 4,200 sq km, comprises of the Sunderban Tiger Reserve of 2,585 sq km is home to about 96 Royal Bengal Tigers (2020) is also a world heritage site and a Ramsar Site.
    • The Indian Sunderbans is bound on the west by river Muriganga and on the east by rivers Harinbhahga and Raimangal.
    • Other major rivers flowing through this eco-system are Saptamukhi, Thakuran, Matla and Goasaba.

    Worrying scenario

    • The researchers found that 10 of 257 forests emitted more carbon than they captured between 2001 and 2020.
    • The reasons for included clearance of land for agriculture, the increasing scale and severity of wildfires due to drought as well as extreme weather phenomena.
    • The 10 sites are:
    1. Tropical Rainforest Heritage of Sumatra (Indonesia)
    2. RĂ­o PlĂĄtano Biosphere Reserve (Honduras)
    3. Yosemite National Park (US)
    4. Waterton Glacier International Peace Park (Canada, US)
    5. Barberton Makhonjwa Mountains (South Africa)
    6. Kinabalu Park (Malaysia)
    7. Uvs Nuur Basin (Russian Federation, Mongolia)
    8. Grand Canyon National Park (US)
    9. Greater Blue Mountains Area (Australia)
    10. Morne Trois Pitons National Park (Dominica)

    (Try mapping these sites)

    Back2Basics: Types of Carbon

    • Brown Carbon: It is brown smoke released by the combustion of organic matter.
    • Black Carbon: It is also a greenhouse gas and causes more pollution than Brown Carbon. The particles leftover from incomplete combustion of fossil fuels (soot and dust). It has a greater effect on radiation transmission.
    • Green Carbon: Carbon incorporated into plant biomass and the soils below. Green carbon is carbon removed by photosynthesis and stored in the plants and soil of natural ecosystems.
    • Blue Carbon: Blue Carbon refers to coastal, aquatic and marine carbon sinks held by the indicative vegetation, marine organism and sediments.

     

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  • Why India shouldn’t sign on to net zero

    Context

    The recent report of the Intergovernmental Panel on Climate Change made it clear that limiting the increase in the world’s average temperature from pre-industrial levels to those agreed in the Paris Agreement requires global cumulative emissions of carbon dioxide to be capped at the global carbon budget.

    Understanding why reaching net zero by itself is irrelevant to forestalling dangerous warming

    • The promise of when you will turn off the tap does not guarantee that you will draw only a specified quantity of water.
    • The top three emitters of the world — China, the U.S. and the European Union — even after taking account of their net zero commitments and their enhanced emission reduction commitments for 2030, will emit more than 500 billion tonnes of carbon dioxide before net zero.
    • These three alone will exceed the limit of about 500 billion tonnes from 2020 onwards, for even odds of keeping global temperature increase below 1.5°C.

    Issues with ‘net zero’ target

    • Neither the Paris Agreement nor climate science requires that net zero be reached individually by countries by 2050, the former requiring only global achievement of this goal “in the second half of the century”.
    • Claims that the world “must” reach specific goals by 2030 or 2050 are the product of specific economic models for climate action.
    • They front-load emission reduction requirements on developing countries, despite their already low emissions, to allow the developed world to backload its own, buying time for its own transition.
    • These stringent limits on future cumulative emissions post 2020, amounting to less than a fifth of the total global carbon budget, is the result of its considerable over-appropriation in the past by the global North.
    • Promises of net zero in their current form perpetuate this hugely disproportionate appropriation of a global commons, while continuing to place humanity in harm’s way.

    Suggestions for India

    • India is responsible for no more than 4.37% cumulative emissions of carbon dioxide since the pre-industrial era, even though it is home to more than a sixth of humanity.
    • India’s per capita emissions are less than half the world average, less than one-eighth of the U.S.’s.
    • For India to declare net zero now is to accede to the further over-appropriation of the global carbon budget by a few.
    • India’s contribution to global emissions, in both stock and flow, is so disproportionately low that any sacrifice on its part can do nothing to save the world.
    • India, in enlightened self-interest, must now stake its claim to a fair share of the global carbon budget.
    • Technology transfer and financial support, together with “negative emissions”, if the latter succeeds, can compensate for the loss of the past.
    • Such a claim by India provides it greater, and much-needed long-term options.
    • It enables the responsible use of coal, its major fossil fuel resource, and oil and gas, to bootstrap itself out of lower-middle-income economy status and eradicate poverty, hunger and malnutrition for good.
    • India’s resource-strapped small industries sector needs expansion and modernisation.
    • The agriculture sector, the second-largest source of greenhouse gas emissions for India after energy, needs to double its productivity and farmers’ incomes and build resilience.
    •  Infrastructure for climate resilience in general is critical to future adaptation to climate change.
    • All of these will require at least the limited fossil fuel resources made available through a fair share of the carbon budget.

    Conclusion

    Without restriction of their future cumulative emissions by the big emitters, to their fair share of the global carbon budget, and the corresponding temperature target that they correspond to made clear, India cannot sign on to net zero.

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  • COP26 Climate Conference and Why it is important

    The UK will host the COP 26 UN Climate Change Conference from October 31 to November 12.

    Conference of Parties (CoP): A Backgrounder

    • The CoP comes under the United Nations Climate Change Framework Convention (UNFCCC) which was formed in 1994.
    • The UNFCCC was established to work towards “stabilisation of greenhouse gas concentrations in the atmosphere.”
    • It laid out a list of responsibilities for the member states which included:
    1. Formulating measures to mitigate climate change
    2. Cooperating in preparing for adaptation to the impact of climate change
    3. Promoting education, training and public awareness related to climate change
    • The UNFCCC has 198 parties including India, China and the USA. COP members have been meeting every year since 1995.

    COP1 to COP25: Key takeaways

    COP1: The first conference was held in 1995 in Berlin.

    COP3: It was held in Kyoto, Japan, in 1997, the famous Kyoto Protocol (w.e.f. 2005) was adopted. It commits the member states to pursue limitation or reduction of greenhouse gas emissions.

    COP8: India hosted the eighth COP in 2002 in New Delhi. It laid out several measures including, ‘strengthening of technology transfer
 in all relevant sectors, including energy, transport and R&D,  and the strengthening of institutions for sustainable development.

    COP21: it is one of the most important that took place in 2015, in Paris, France. Here countries agreed to work together to ‘limit global warming to well below 2, preferably at 1.5 degrees Celsius, compared to pre-industrial levels.’

    Significance of COP26

    • The event will see leaders from more than 190 countries, thousands of negotiators, researchers and citizens coming together to strengthen a global response to the threat of climate change.
    • It is a pivotal movement for the world to come together and accelerate the climate action plan after the COVID pandemic.

    COP26 goals

    According to the UNFCCC, COP26 will work towards four goals:

    1. Secure global net-zero by mid-century and keep 1.5 degrees within reach
    • The UNFCCC recommends that countries ‘accelerate the phase-out of coal, curtail deforestation, speed up the switch to electric vehicles and encourage investment in renewables’ to meet this goal.
    1. Adapt to protect communities and natural habitats
    • Countries will work together to ‘protect and restore ecosystems and build defences, warning systems and resilient infrastructure and agriculture to avoid loss of homes, livelihoods and even lives.’
    1. Mobilise finance
    • To deliver on first two goals, developed countries must make good on their promise to mobilise at least $100bn in climate finance per year by 2020.
    1. Work together to deliver
    • Another important task at the COP26 is to ‘finalise the Paris Rulebook’. Leaders will work together to frame a list of detailed rules that will help fulfil the Paris Agreement.

    What India could do to reach its targets?

    • Update NDCs: It is time for India to update its Nationally Determined Contributions or NDCs. (NDCs detail the various efforts taken by each country to reduce the national emissions)
    • Effective planning: Sector by sector plans are needed to bring about development. We need to decarbonise the electricity, transport sector and start looking at carbon per passenger mile.
    • Energy transition: Aggressively figure out how to transition our coal sector
    • Robust legal framework: India also needs to ramp up the legal and institutional framework of climate change.

    Try answering this PYQ:

    With reference to the Agreement at the UNFCCC Meeting in Paris in 2015, which of the following statements is/are correct?

    1. The Agreement was signed by all the member countries of the UN and it will go into effect in 2017.
    2. The Agreement aims to limit the greenhouse gas emissions so that the rise in average global temperature by the end of this century does not exceed 2 degree Centigrade or even 5 degree Centigrade above pre-industrial levels.
    3. Developed countries acknowledged their historical responsibility in global warming and committed to donate dollar 1000 billion a year from 2020 to help developing countries to cope with climate change.

    Select the correct answer using the code given below:

    (a) 1 and 3 only

    (b) 2 only

    (c) 2 and 3 only

    (d) 1, 2 and 3

     

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  • Climate finance

    Context

    In the run-up to the 26th UNFCCC media reports have claimed that developed countries are inching closer to the target of providing $100 billion annually. This view has been bolstered by the Organisation for Economic Co-operation and Development (OECD), which claimed that climate finance provided by developed countries had reached $78.9 billion in 2018.

    Issue of climate financing and claim of reaching the target of $100 billion

    • These claims reaching the target of $100 billion annually is erroneous.
    • First, the OECD figure includes private finance and export credits.
    • Public finance: Developing countries have insisted that developed country climate finance should be from public sources and should be provided as grants or as concessional loans.
    • However, the OECD report makes it clear that the public finance component amounted to only $62.2 billion in 2018, with bilateral funding of about $32.7 billion and $29.2 billion through multilateral institutions.
    • Nature of finance: Significantly, the final figure comes by adding loans and grants. Of the public finance component, loans comprise 74%, while grants make up only 20%.
    • The report does not say how much of the total loan component of $46.3 billion is concessional.
    • Non-concessional loans: From 2016 to 2018, 20% of bilateral loans, 76% of loans provided by multilateral development banks and 46% of loans provided by multilateral climate funds were non-concessional.
    • Between 2013 and 2018, the share of loans has continued to rise, while the share of grants decreased.
    • The OECD reports on climate finance have long been criticised for inflating climate finance figures.
    •  In contrast to the OECD report, Oxfam estimates that in 2017-18, out of an average of $59.5 billion of public climate finance reported by developed countries, the climate-specific net assistance ranged only between $19 and $22.5 billion per year.
    •  The 2018 Biennial Assessment of UNFCCC’s Standing Committee on Finance reports that on average, developed countries provided only $26 billion per year as climate-specific finance between 2011-2016.

    Broken commitments from the US on climate financing

    • U.S. President Joe Biden recently said that the U.S. will double its climate finance by $11.4 billion annually by 2024.
    • It is Congress that will decide on the quantum after all.
    • The U.S. also has a history of broken commitments, having promised $3 billion to the Green Climate Fund (GCF) under President Barack Obama, but delivering only $1 billion.
    • The future focus of U.S. climate finance is the mobilisation of private sector investment.
    • The bulk of the money coming in would be through private funds, directed to those projects judged “bankable” and not selected based on developing countries’ priorities and needs.

    Finance skews toward mitigation

    • Climate finance has also remained skewed towards mitigation, despite the repeated calls for maintaining a balance between adaptation and mitigation.
    • The 2016 Adaptation Gap Report of the UN Environment Programme had noted that the annual costs of adaptation in developing countries could range from $140 to $300 billion annually by 2030 and rise to $500 billion by 2050.
    • Currently available adaptation finance is significantly lower than the needs expressed in the Nationally Determined Contributions submitted by developing countries.

    Conclusion

    Delivering on climate finance is fundamental to trust in the multilateral process. Regrettably, while developing countries will continue to pressure developed countries to live up to their promises, the history of climate negotiations is not in their favour.

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  • India needs a carbon policy for agriculture

    Context

    The UK is set to host the 26th UN Climate Change Conference of the Parties (CoP26) in Glasgow from October 31 to November 12 with a view to accelerate action towards the Paris Agreement’s goals. The focus should be on climate finance and transfer of green technologies at low cost.

    Cause of concern for India

    • According to the Global Carbon Atlas, India ranks third in total greenhouse gas emissions by emitting annually around 2.6 billion tonnes (Bt) CO2eq, preceded by China (10 Bt CO2eq) and the United States (5.4 Bt CO2eq), and followed by Russia (1.7Bt) and Japan (1.2 Bt).
    • India ranked seventh on the list of countries most affected due to extreme weather events, incurring losses of $69 billion (in PPP) in 2019 (Germanwatch, 2021).
    • The fact that 22 of the 30 most polluted cities in the world are in India is a major cause of concern.
    • Delhi is the world’s most polluted capital as per the World Air Quality Report, 2020.

    Issues raised in global negotiation on climate change

    • Nations are still quibbling about historical global emitters and who should take the blame and fix it.
    • Global negotiations on climate change often talk about emissions on a per capita basis and the emission intensity of GDP.
    • Per capita emission: Of the top five absolute emitters, the US has the highest per capita emissions (15.24 tonnes), followed by Russia (11.12 tonnes).
    • India’s per capita emissions is just 1.8 tonnes, significantly lower than the world average of 4.4 tonnes per capita.
    • If one takes emissions per unit of GDP, of the top five absolute emitters, China ranks first with 0.486 kg per 2017 PPP $ of GDP, which is very close to Russia at 0.411 kg per 2017 PPP $ of GDP.
    • India is slightly above the world average of 0.26 (kg per 2017 PPP $ of GDP) at 0.27 kg, while the USA is at 0.25, and Japan at 0.21.
    • In our Nationally Determined Contributions (NDCs) submitted in 2016, India committed to “reduce emission intensity of its GDP by 33 to 35 per cent by 2030 from 2005 level.”

    Sector-wise emission and share of agriculture in it

    • Global emissions show that electricity and heat production and agriculture, forestry and other land use make up 50 per cent of the emissions.
    • But the emissions pie in India owes its largest chunk (44 per cent) to the energy sector, followed by the manufacturing and construction sector (18 per cent), and agriculture, forestry and land use sectors (14 per cent), with the remaining being shared by the transport, industrial processes and waste sectors.
    • The share of agriculture in total emissions has gradually declined from 28 per cent in 1994 to 14 per cent in 2016.
    • However, in absolute terms, emissions from agriculture have increased to about 650 Mt CO2 in 2018, which is similar to China’s emissions from agriculture.
    • Agricultural emissions in India are primarily from the livestock sector (54.6 per cent) in the form of methane emissions due to enteric fermentation and the use of nitrogenous fertilisers in agricultural soils (19 per cent) which emit nitrous oxides; rice cultivation (17.5 per cent) in anaerobic conditions accounts for a major portion of agricultural emissions followed by livestock management (6.9 per cent) and burning of crop residues (2.1 per cent).

    Way forward: Carbon policy for agriculture

    • Reward farmers through carbon credit: A carbon policy for agriculture must aim not only to reduce its emissions but also reward farmers through carbon credits which should be globally tradable.
    • Focus on livestock: With the world’s largest livestock population (537 million), India needs better feeding practices with smaller numbers of cattle by raising their productivity.
    • Switch areas from rice to maize: While direct-seeded rice and alternative wet and dry practices can reduce the carbon footprint in rice fields, the real solution lies in switching areas from rice to maize or other less water-guzzling crops.
    • Efficient fertiliser use: Agricultural soils are the largest single source of nitrous oxide (N2O) emissions in the national inventory.
    • Nitrous oxide emissions from use of nitrogen-fertiliser increased by approximately 358 per cent during 1980-81 to 2014-15.
    • An alternative for better and efficient fertiliser use would be to promote fertigation and subsidise soluble fertilisers.
    • Incentives and subsidies: The government should incentivise and give subsidies on drips for fertigation, switching away from rice to corn or less water-intensive crops, and promoting soluble fertilisers at the same rate of subsidy as granular urea.

    Consider the question “Agriculture sector is one of the significant contributors to the greenhouse gas emissions. This underscores the importance of carbon policy for agriculture in India. In this context, suggest the steps needed to be taken under the policy.” 

    Conclusion

    Carbon policy for agriculture in India would help it meet its goals in reducing emissions while making agriculture climate-resilient.

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    Back2Basics: Anaerobic conditions

    • An anaerobic process in which organic food is converted into simpler compounds, and chemical energy (ATP) is produced. Certain types use the electron transport chain system to pass the electrons to the final electron acceptor, which may be an inorganic or an organic compound, but not oxygen.

  • India joins High Ambition Coalition (HAC)

    India has officially joined the High Ambition Coalition for Nature and People, a group of more than 70 countries encouraging the adoption of the global goal to protect 30×30.

    High Ambition Coalition (HAC)

    Aim: To promote an international agreement to protect at least 30 % the of world’s land and ocean by 2030

    • The HAC is an informal group of approximately 61 countries within the UN Framework Convention on Climate Change (UNFCCC).
    • It is committed to advancing progressive proposals on climate ambition.
    • The HAC was founded by the Republic of the Marshall Islands in 2014 with the aim of ensuring the Paris Agreement, adopted in 2015, was as ambitious as possible.
    • The Republic of the Marshall Islands serves as the convener and secretariat of the HAC.
    • The global 30×30 goal is currently a centerpiece of the treaty.

    Members

    • HAC members currently include a mix of countries in the global north and south; European, Latin American, Africa and Asia countries are among the members.
    • India is the first of the BRICS bloc of major emerging economies (Brazil, Russia, India, China and South Africa) to join the HAC.

     

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  • First Nobel for Climate Science

    Three scientists received the Nobel Prize in Physics for work that is essential to understanding how the Earth’s climate is changing, pinpointing the effect of human behaviour on those changes and ultimately predicting the impact of global warming.

    Who are the laureates?

    • The winners were Syukuro Manabe, Klaus Hasselmann of Germany, and Giorgio Parisi from Italy.
    • In 2015, at a UK-based climate-focused online publication sought to identify the three most influential climate change research papers ever published.
    • The paper that received the most votes was one by Syukuro Manabe and Richard Wetherald way back in 1967.
    • These reports for the first time, had described the impact of carbon dioxide and water vapour on global warming.

    Citation for their Climate Model

    • Manabe is a senior meteorologist and climatologist at Princeton University.
    • In the 1960s, he led ground-breaking research into how increased levels of carbon dioxide lead to higher temperatures on the surface of the Earth.
    • This laid the foundation for the development of current climate models.
    • Hasselmann is a German physicist and oceanographer who greatly advanced public understanding of climate change through the creation of a model that links climate and chaotic weather systems.
    • Parisi has focused on quantum field theory and complex systems.

    Why it is significant feat?

    • This is the first-time climate scientists have been awarded the Physics Nobel.
    • The IPCC had won the Peace Nobel in 2007, an acknowledgement of its efforts in creating awareness for the fight against climate change.
    • A Chemistry Nobel was also awarded to Paul Crutzen in 1995, for his work on the ozone layer, is considered the only other time someone from atmospheric sciences has won this honour.
    • The recognition of Manabe and Hasselmann, therefore, is being seen as an acknowledgement of the importance that climate science holds in today’s world.

     

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  • 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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  • 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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