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Subject: Environment

  • Explained: What new monsoon dates mean

     

    The India Meteorological Department (IMD) had decided to revise the normal onset and withdrawal dates for the monsoon in some parts of the country from this year.

    Onset of Monsoon

    • The four-month southwest monsoon season, which brings as much as 70 per cent of the country’s annual rainfall, officially begins on June 1, with the onset over Kerala, and ends on September 30.
    • It takes about a month and half after onset on the Kerala coast to cover the entire country; and about a month, beginning from the northwestern parts of the country on Sept. 1 to withdraw completely.
    • Although the June 1 date for the onset of the monsoon on the Kerala coast is unlikely to be changed, the dates for onset in many other parts of the country are expected to be revised.
    • Mumbai, for example, expects to start getting rain from June 10 the revision is likely to push this date back by a few days.
    • Effectively, the monsoon is now expected to have later arrival and withdrawal dates in most parts of the country.

    Why was this revision needed?

    • The main reason for the revision in the normal dates is the changes in precipitation patterns that have been taking place over the last many years.
    • In the last 13 years, for example, only once has the onset over the Kerala coast happened on June 1.
    • While two or three days of earlier or later onset falls within the yearly variability in several years the onset happened five to seven days late.
    • Similarly, the commencement of withdrawal has happened in the first week of September only twice during this period, and last year, the withdrawal started as late as October 9 — and was completed in around just a week.

    Recent peculiarity with the exam

    • One of the significant changes being noticed is that rainfall is getting increasingly concentrated within a narrow band of days within the monsoon season.
    • So, there are extremely wet days followed by prolonged periods of dry days.
    • IMD data show that over several previous years, nearly 95 per cent of monsoon precipitation in 22 major cities of the country had happened over a period of just three to 27 days.
    • Delhi, for example, had received almost 95 per cent of its monsoon rainfall over just 99 hours. And half of Mumbai’s monsoon rain had fallen over just 134 hours, or five and a half days, on average.

    Regional variations

    • Patterns of regional variations in rainfall are also changing
    • Areas that have traditionally received plenty of rainfall are often remaining dry, while places that are not expected to get a lot of monsoon rain have sometimes been getting flooded.
    • Climate change could be one of the factors driving these changes, but there could be other reasons as well.

    What will be the impact of IMD’s move?

    For Farmers

    • The revisions are meant to reflect the changes in precipitation patterns in recent years.
    • New dates will likely nudge farmers in some parts of the country to make slight adjustments in the time of sowing their crops.
    • It would definitely have an impact on our agriculture practices — when to start sowing, when to harvest.
    • So, even if there is a delay in the arrival of monsoon by three to four days over a region, it would not matter much if there is a fairly good rainfall distribution thereafter.
    • The change in dates would affect water management practices as well.

    For Industries

    • The planning that goes to beat the heat — several cities execute heat action plans — just ahead of the monsoon would have to factor in the need to be prepared for longer periods of heat.
    • Rajeevan said many other activities including industrial operations, the power sector, or those using cooling systems, would also need to change their behaviour.
    • The power grid can, for example, have more realistic planning for peak periods of electricity consumption in certain months.

    Way Forward

    • The changed dates are expected to be announced in April, when the IMD makes its first forecast for the monsoon.
    • Agro-meteorologists, however, agree that more than the onset, it is the information about the spatio-temporal distribution of rainfall that will be more helpful for farmers.
    • Ultimately, the change in normal dates of the onset and withdrawal of the monsoon would help people understand when to expect rains, and to plan their activities accordingly.

  • [pib] Saksham Campaign

    ‘Saksham’ Campaign for fuel conservation has been launched.

    ‘Saksham’ Campaign

    • It is an annual one-month long, people-centric fuel conservation mega campaign of Petroleum Conservation Research Association (PCRA) under the aegis of Ministry of Petroleum and Natural Gas.
    • PCRA and Oil & Gas companies carry out various interactive programs during this month-long campaign.
    • Activities like ‘Saksham’ Cycle Day, Cyclothons, Workshops for drivers of commercial vehicles, Seminars for housewives/cooks on adopting simple fuel saving measure.

  • Centre eases CRZ rules for ‘Blue Flag’ beaches

    The MoEFCC has relaxed Coastal Regulation Zone (CRZ) rules that restrict construction near beaches to help States construct infrastructure and enable them to receive ‘Blue Flag’ certification.

    Why such move?

    • The Blue Flag certification, however, requires beaches to create certain infrastructure — portable toilet blocks, grey water treatment plants, a solar power plant, seating facilities, CCTV surveillance and the like.
    • However, India’s CRZ laws don’t allow the construction of such infrastructure on beaches and islands.
    • The new order allows for some constructions subject to maintaining a minimum distance of 10 meters from HTL (High Tide Line).

    Blue Flag certification

    • 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.

    Blue Flag beaches

    • Japan and South Korea are the only countries in south and southeastern Asia to have Blue Flag beaches.
    • Spain tops the list with 566 such beaches; Greece and France follow with 515 and 395 Blue Flag beaches, respectively.

    In India

    • Last year, the Ministry selected 13 beaches in India to vie for the certificate.
    • The earmarked beaches are — Ghoghala beach (Diu), Shivrajpur beach (Gujarat), Bhogave beach (Maharashtra), Padubidri and Kasarkod beaches (Karnataka), Kappad beach (Kerala), Kovalam beach (Tamil Nadu), Eden beach (Puducherry), Rushikonda beach (Andhra Pradesh), Miramar beach (Goa), Golden beach (Odisha), Radhanagar beach (Andaman & Nicobar Islands) and Bangaram beach (Lakshadweep).

  • Eruption of Taal Volcano

     

    In the Philippines, a volcano called Taal on the island of Luzon; 50 km from Manila has recently erupted.

    Taal Volcano

    • Taal is classified as a “complex” volcano. Taal has 47 craters and four maars (a broad shallow crater).
    • It is situated at the boundaries of two tectonic plates — the Philippines Sea Plate and the Eurasian plate — it is particularly susceptible to earthquakes and volcanism.
    • A complex volcano, also called a compound volcano, is defined as one that consists of a complex of two or more vents, or a volcano that has an associated volcanic dome, either in its crater or on its flanks.
    • Examples include Vesuvius, besides Taal.
    • The Taal volcano does not rise from the ground as a distinct, singular dome but consists of multiple stratovolcanoes (volcanoes susceptible to explosive eruptions), conical hills and craters of all shapes and sizes.

    Threats posed

    • Taal’s closeness to Manila puts lives at stake. Manila is a few tens of kilometres away with a population of over 10 million.
    • The volcano is currently at alert level 4, which means that a “hazardous eruption” could be imminent within a few hours to a few days.
    • Hazardous eruptions are characterised by intense unrest, continuing seismic swarms and low-frequency earthquakes.

    Earlier records of eruption

    • Taal has erupted more than 30 times in the last few centuries. Its last eruption was on October 3, 1977.
    • An eruption in 1965 was considered particularly catastrophic, marked by the falling of rock fragments and ashfall.
    • Before that, there was a “very violent” eruption in 1911 from the main crater. The 1911 eruption lasted for three days, while one in 1754 lasted for seven months.
    • Because it is a complex volcano with various features, the kinds of eruption too have been varied. An eruption can send lava flowing through the ground, or cause a threat through ash in the air.

  • Kaziranga National Park

    Kaziranga, home of the world’s most one-horned rhinos, has 96 species of wetland birds — one of the highest for wildlife preserves in India.

    Kaziranga National Park

    • It is a protected area in the northeast state of Assam.
    • Spread across the floodplains of the Brahmaputra River, its forests, wetlands and grasslands are home to tigers, elephants and the world’s largest population of Indian one-horned rhinoceroses.
    • Much of the focus of conservation efforts in Kaziranga are focused on the ‘big four’ species— rhino, elephant, Royal Bengal tiger and Asiatic water buffalo.
    • The 2018 census had yielded 2,413 rhinos and approximately 1,100 elephants.
    • The tiger census of 2014 said Kaziranga had an estimated 103 tigers, the third highest population of the striped cat in India after Jim Corbett National Park (215) in Uttarakhand and Bandipur National Park (120) in Karnataka.
    • Kaziranga is also home to nine of the 14 species of primates found in the Indian subcontinent.

  • Species in news: Chinese paddlefish

    One of the largest freshwater species, Chinese paddlefish has been declared extinct.

    Chinese paddlefish

    • The Chinese paddlefish (Psephurus gladius) was an iconic species, measuring up to 7 m in length, dating back from 200 million years ago, and therefore swimming the rivers when dinosaurs ruled the Earth.
    • Its ancestral home was the Yangtze River.
    • It was once common in the Yangtze, before overfishing and habitat fragmentation — including dam building — caused its population to dwindle from the 1970s onwards.
    • Between 1981 and 2003, there were just around 210 sightings of the fish. The researchers estimate that it became functionally extinct by 1993, and extinct sometime between 2005-2010.

    How did the study determine that it has gone extinct?

    • Chinese researchers made this conclusion based on the Red List criteria of the International Union for Conservation of Nature (IUCN).
    • The Red List has several categories for extinction, or for how endangered a species is.
    • For example, “extinct in the wild” means a species survives only in a captive environment while “locally extinct” means a species has ceased to exist in a particular area but may exist in other areas.
    • Then there is “functionally extinct”, which means the species continues to exist but it has too few members to enable to reproduce meaningfully enough to ensure survival.
    • To be “globally extinct”, it means a species has no surviving member anywhere. Such a conclusion is reached when there is no reasonable doubt left that its last member has died.

    How does extinction status matters for conservation?

    • Declaring a species extinct is an elaborate process.
    • It involves a series of exhaustive surveys, which need to be taken at appropriate times, throughout the species’ historic range and over a time-frame that is appropriate to the species’ life cycle and form.
    • When these surveys fail to record the existence of any individuals belonging to that species, a species may be presumed to be extinct.
    • Once declared extinct, a species is not eligible for protective measures and conservation funding; therefore, the declaration has significant consequences.

  • Green Credit Scheme

    The Forest Advisory Committee has approved a scheme that could allow “forests” to be traded as a commodity.  FAC is an apex body tasked with adjudicating requests by the industry to raze forest land for commercial ends.

    Green Credit Scheme

    • The proposed ‘Green Credit Scheme’, as it is called, allows agencies — they could be private companies, village forest communities — to identify land and begin growing plantations.
    • After three years, they would be eligible to be considered as compensatory forest land if they met the Forest Department’s criteria.
    • An industry needing forest land could then approach the agency and pay it for parcels of such forested land, and this would then be transferred to the Forest Department and be recorded as forest land.
    • The participating agency will be free to trade its asset, that is plantation, in parcels, with project proponents who need forest land.
    • This is not the first time that such a scheme has been mooted.
    • In 2015, a ‘Green Credit Scheme’ for degraded forest land with public-private participation was recommended, but it was not approved by the Union Environment Minister, the final authority.

    Impact

    • In the current system, industry needs to make good the loss of forest by finding appropriate non-forest land — equal to that which would be razed.
    • It also must pay the State Forest Department the current economic equivalent — called Net Present Value — of the forest land.
    • It’s then the Forest Department’s responsibility to grow appropriate vegetation that, over time, would grow into forests.
    • Industries have often complained that they find it hard to acquire appropriate non-forest land, which has to be contiguous to existing forest.
    • If implemented it allows the Forest Department to outsource one of its responsibilities of reforesting to non-government agencies.

     Individuals outside

    • One of India’s prongs to combat climate change is the Green India Mission that aims to sequester 2.523 billion tonnes of carbon by 2020-30, and this involves adding 30 million hectares in addition to existing forest.
    • Critics held that it does not solve the core problems of compensatory afforestation.
    • It creates problems of privatizing multi-use forest areas as monoculture plantation plots. Forests are treated as a mere commodity without any social or ecological character.

  • Why Australia is killing thousands of camels

    Australia began a five-day cull of up to 10,000 camels, using sniper fire from helicopters. The exercise is taking place in Anangu Pitjantjatjara Yankunytjatjara (called APY Lands) in South Australia state where the animals will be killed according to the “highest standards of animal welfare”.

    Australia’s camel woes

    • Australia is believed to have the largest population of wild camels in the world — over 10 lakh, which is rapidly growing.
    • The herds roam in the country’s inland deserts and are considered a pest, as they foul water sources and trample native flora while foraging for food over vast distances each day.
    • Unless their breeding is controlled, the camel population doubles every nine years.
    • The animals also have a massive carbon footprint, each camel emitting methane equivalent to one tonne of carbon ÂŹdioxide a year.
    • Some in the APY Lands are now demanding legislation that would allow them to legally cull the animals, which could help offset greenhouse emissions.

    Camels from India

    • Camels in Australia, which number over 10 lakh today, were first brought to the continent in the late 19th century from India when Australia’s massive interior region was first being discovered.
    • Over 20,000 were imported from India between the 1840s and the 1900s.

    Why is Australia killing the camels?

    • The year 2019 was the driest and hottest on record in Australia.
    • A catastrophic bushfire season, that began months before usual, has left over 25 people dead and has burned over 1.5 crore acres of land, killing an estimated 100 crore animals.
    • The acute drought has pushed massive herds of feral or wild camels towards remote towns looking for water, endangering indigenous communities.
    • According to South Australia’s environment department, some camels have died of thirst or trampled each other as they rushed to find water.
    • The camels have been threatening scarce reserves of food and water, besides damaging infrastructure and creating a hazard for drivers, authorities have said.
    • The herds have also contaminated important water sources and cultural sites.

  • [op-ed of the day] Weathering the storm

    Context

    State of Climate of India report by IMD should occasion interventions to make people resilient to extreme weather events.

    What does the report confirm?

    • Frequent extreme weather events: The report states that extreme weather events have become par for the course in the country.
    • The report notes that excessive heat, cold and rainfall killed 1,562 people during the year.
    • Intense dry spells, even droughts, were interspersed with floods in several parts of the country
    • Above normal temperature:  The mean temperature last year was 0.36 above normal.
    • The excess rainfall: The country also recorded excess rainfall during both the southwest and northeast monsoons.

    Long-term meteorological trends:

    • The IMD report should be seen in conjunction with long-term meteorological trends.
    • The warmest decade: The World Meteorological Organisation reckons that the decade starting 2011 remains on track to be the warmest on record.
    • Increase in the relative humidity: At the same time, data from the European Centre for Medium-Range Forecast shows that the relative humidity in the mid-troposphere in the Subcontinent has increased by about 2 percent in the past four decades.
    • Such warming has increased the capacity of oceans to form intense cyclonic disturbances.

    Implications for disaster-preparedness:

    • Cyclones: Last year, as the IMD report notes, the Indian Ocean witnessed eight cyclones.
    • Cyclones don’t kill but buildings can turn hazardous during such extreme weather events.
    • The vulnerability of the poor: In Odisha winds blowing at more than 140 kilometers per hour ripped off roofs and window frames in modern houses and also exposed the vulnerability of the mud and bamboo houses of the poor.
    • Guidelines: The Ministry of Housing and Urban Affairs does have guidelines for climate-friendly construction.
    • But planners in coastal cities and towns rarely pay heed to its provisions.
    • Cooperation between the states: The changing dynamics of weather also demands cooperation between states that share a river basin.
    • Maharashtra and Karnataka bickered over opening the gates of the Almatti dam on the Krishna.

    Implications for the farmers:

    • For farmers, vagaries in nature mean disruptions in the entire cropping cycle.
    • This year, Kerala, southern Karnataka, and Gujarat were heavily deficient till July.
    • But within a few days in the last week of July, these states recorded surplus rainfall.
    • Rainwater storage and use: Increasing their resilience calls for efficient rainwater storage and use.

    Conclusion:

    It’s clear that dealing with exceptional weather will require interventions at the national, state and local levels. The Statement on Climate of India 2019 drives home the urgency of such interventions.

  • [pib] Snow and Avalanche Study Establishment (SASE)

    Snow and Avalanche Study Establishment (SASE) has issued an Avalanche warning to Leh in Ladakh region.

    SASE

    • SASE is a laboratory of the Defence Research and Development Organization (DRDO)
    • It is located near Manali, Himachal Pradesh.
    • Its primary function is research in the field of snow and avalanches to provide avalanche control measures and forecasting support to Armed forces.
    • Leh is important as it has two passes namely Chang La and Khardung La with world’s highest motorable roads through them with several avalanche-prone zones.
    • Its utility is also meant for the soldiers in the worlds highest battle filed Siachen, in the region.