Geography and environment

 

Cyclone Montha

Introduction and about

• Cyclone Montha was a severe cyclonic storm that made landfall in Andhra Pradesh, India.
• It brought heavy rainfall, strong winds and widespread damage across coastal Andhra Pradesh and Odisha, and affected parts of Tamil Nadu.
• The system formed over the west‑central Bay of Bengal (BoB) as a low‑pressure area and rapidly intensified into a Severe Cyclonic Storm (SCS), with sustained winds in the range of about 89–117 kilometres per hour (km/h).

 

Why in news / Current significance

• Immediate impact: extensive coastal damage, heavy rains and high winds that disrupted transport, communications and local services in the affected states.
• Humanitarian and emergency response: large‑scale relief, rescue and restoration operations were mobilised by state and national agencies following landfall.
• Meteorological interest: the storm’s rapid intensification and track across the Bay of Bengal highlight ongoing concerns about cyclone behaviour in the region and the need for timely warnings.

 

Formation and meteorological details

• Origin: began as a low‑pressure system over the west‑central Bay of Bengal.
• Intensification: strengthened quickly to become a Severe Cyclonic Storm (SCS) — the SCS category corresponds to sustained winds of approximately 89–117 km/h.
• Steering mechanism: cyclones in the Bay of Bengal are commonly driven westwards by easterly trade winds between about 5° and 20° latitude, which tends to push systems towards the Indian east coast, analogous to Atlantic storms tracking toward the Americas.

 

Naming of the cyclone

• Name: the system was given the name “Montha” (often reported as Montha), a Thai word meaning “beautiful” or “fragrant flower.”
• Naming process: the name was contributed by Thailand under the WMO‑ESCAP Panel on Tropical Cyclones (PTC).
• Naming conventions: cyclone names used in the North Indian Ocean are chosen to be culturally neutral, gender‑neutral and limited in length (capped at eight letters) to ensure clarity, ease of communication and wide acceptance—measures that aid effective disaster messaging and public awareness.

 

WMO‑ESCAP Panel on Tropical Cyclones (PTC)

• Purpose and origin: the WMO‑ESCAP PTC was formed in 1972 as an intergovernmental body of countries affected by cyclones in the Bay of Bengal and Arabian Sea.
• Membership: includes Bangladesh, India, Iran, Maldives, Myanmar, Oman, Pakistan, Qatar, Saudi Arabia, Sri Lanka, Thailand, United Arab Emirates and Yemen.
• Function: the Panel, operating under the WMO Tropical Cyclone Programme, coordinates regional naming lists, forecasting practices and liaison between Regional Specialized Meteorological Centres (RSMCs) and national Tropical Cyclone Warning Centres (TCWCs).

 

Role of India Meteorological Department (IMD) and regional forecasting

• IMD: the India Meteorological Department is one of six designated Regional Specialized Meteorological Centres (RSMCs) responsible for monitoring tropical cyclones in the North Indian Ocean.
• Coordination: RSMCs and national TCWCs work with the WMO‑ESCAP PTC to issue forecasts, warnings and advisories that support national emergency responses and public safety measures.
• Practical outcome: centralised naming and coordinated forecasts improve clarity in communications, help avoid confusion in media reporting and facilitate timely evacuations and preparations.

 

Geography and environmental

context — Bay of Bengal cyclones

• Typical track and drivers: the Bay of Bengal is a prolific cyclone basin; easterly trade winds and regional circulation patterns commonly drive cyclones westwards toward the Indian east coast and neighbouring countries.
• Seasonal patterns: the region experiences peak cyclone activity during pre‑monsoon (April–June) and post‑monsoon (October–December) periods, when oceanic and atmospheric conditions favour cyclone development.
• Vulnerability: low‑lying coastal zones of Andhra Pradesh, Odisha, West Bengal, Bangladesh and parts of Myanmar are particularly exposed to storm surge, heavy rainfall and coastal erosion associated with cyclones.

 

Historical and general background (GK)

• Historical context: the North Indian Ocean basin — which includes the Bay of Bengal and the Arabian Sea — has produced some of the deadliest and most destructive tropical cyclones in recorded history, emphasising the need for robust forecasting and preparedness.
• Institutional evolution: regional cooperation under WMO‑ESCAP PTC since 1972 has standardised naming, forecasting and warning procedures across member countries.
• Technological advances: satellite monitoring, numerical weather prediction models and improved communication systems have progressively increased lead times and accuracy of warnings, reducing loss of life though vulnerabilities remain.

 

Importance and implications

• Disaster management: standardised naming and coordinated warnings improve public understanding, reduce confusion and support timely evacuation and disaster response actions.
• Policy and preparedness: events like Cyclone Montha reinforce the need for resilient infrastructure, coastal planning, early‑warning dissemination and community preparedness.
• Environmental implications: repeated and intense cyclones contribute to coastal damage, flooding, agricultural losses and long‑term socio‑economic impacts for affected communities.

 

Key takeaways

• Cyclone Montha was a rapidly intensifying Severe Cyclonic Storm affecting Andhra Pradesh, Odisha and Tamil Nadu, illustrating the Bay of Bengal’s cyclone risk.
• The WMO‑ESCAP PTC and RSMCs such as the IMD play central roles in naming, forecasting and coordinating warnings to reduce risk and improve emergency response.
• Continued investment in forecasting, infrastructure resilience and community preparedness remains essential to mitigate the impacts of future cyclones.

 

Cyclone Shakhti and Cyclones — Overview

 

Introduction and about

• Cyclone Shakhti: named by Sri Lanka, formed in the Arabian Sea and has strengthened into a Severe Cyclonic Storm (SCS) with peak winds of about 100 km/h.
• Severe Cyclonic Storm (SCS): an operational intensity category used by the India Meteorological Department (IMD) for systems expected to cause significant wind and rain impacts.
• What a cyclone is: a largescale, fast air circulation around a lowpressure centre that produces organised storms and heavy precipitation.
• Rotation: cyclones rotate anticlockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.
• Typical hazards: strong winds, heavy rainfall, coastal storm surge, flooding, infrastructure and agricultural damage, and disruption to shipping and power.

 

Why in news / What’s new / Current

• Recent development: Shakhti has intensified to a Severe Cyclonic Storm — a step up in intensity that triggers heightened warnings and preparedness actions.
• Practical consequences: advisories for coastal states, port and shipping restrictions, potential flight disruptions and alerts for fishing communities.
• Monitoring and response: meteorological agencies (IMD and regional partners), disaster management authorities and coastal administrations will issue forecasts, watches and warnings as the system evolves.
• Public action: affected communities are likely to be urged to follow official guidance, consider evacuation orders, secure property and avoid nonessential travel near coasts and rivers.

 

Cyclone formation in the Arabian Sea (Geography & Mechanisms)

• Warm seasurface temperatures (SSTs): the central and southern Arabian Sea often forms a warm pool; SSTs of at least ~27°C are generally required to sustain tropical cyclones.
• Moisture and convection: abundant moisture and strong upward motion support convective development and organisation of the storm.
• Low vertical wind shear: reduced wind shear allows the cyclone to maintain its structure and intensify.
• Madden–Julian Oscillation (MJO): when the active phase of the MJO passes over the Arabian Sea it enhances convection, moisture and low shear — creating a favourable window for cyclone genesis.
• Other influences: largescale monsoon circulation, upperair patterns and ocean heat content also modulate formation and intensification.

 

Classification and intensity (GK – IMD / WMO)

• IMD / WMO approach: the India Meteorological Department follows World Meteorological Organization guidance to classify systems in the North Indian Ocean (Bay of Bengal and Arabian Sea) by probable damage potential.
• IMD intensity categories (approximate 3‑minute sustained wind ranges converted to km/h):
• Depression: 31–49 km/h
• Deep Depression: 50–61 km/h
• Cyclonic Storm: 62–88 km/h
• Severe Cyclonic Storm (SCS): 89–117 km/h
• Very Severe Cyclonic Storm: 118–165 km/h
• Extremely Severe Cyclonic Storm: 166–220 km/h
• Super Cyclonic Storm: ≥221 km/h
• Shakhti’s classification: with winds near 100 km/h, Shakhti falls in the Severe Cyclonic Storm category.

 

Naming of cyclones (GK –WMO/ESCAP panel)

• Governance: the WMO/ESCAP Panel on Tropical Cyclones (covering the North Indian Ocean) manages the naming protocol for cyclones in the Arabian Sea and Bay of Bengal.
• Name lists: 13 member countries submitted pre‑set lists of names; names are used sequentially from these lists.
• Sequence rule: names are chosen in order, column by column, regardless of the exact location where the cyclone forms.
• Attribution: the name Shakhti was submitted by Sri Lanka.
• Retirement: particularly destructive or deadly cyclone names may be retired and replaced following panel decisions.

 

Historical context and notable Arabian Sea cyclones (GK –

History)

• Relative frequency: historically, the Arabian Sea has produced fewer cyclones than the Bay of Bengal, but it has produced very intense and damaging systems.
• Notable storms: Cyclone Gonu (2007): one of the strongest Arabian Sea storms on record, caused major damage in Oman and Iran.

• Cyclone Kyarr (2019): reached very high intensity over the Arabian Sea.
• Cyclone Nilofar (2014): became a very severe cyclonic storm before weakening near the Indian coast.
• Cyclone Tauktae (2021): caused significant damage along India’s west coast and highlighted coastal vulnerability.
• Climate context: scientific studies indicate warming oceans and changing atmospheric patterns can alter cyclone intensity and behaviour; many analyses suggest a likelihood of increased intensity of the strongest storms though regional details vary and are under ongoing research.

 

Importance, impacts and preparedness (GK – Importance & Response)

• Primary impacts: Coastal storm surge and inundation causing loss of life and property.

• Torrential rain leading to riverine and urban flooding and landslides in hilly areas.
• High winds causing structural damage, power outages and communication loss.
• Disruption to marine traffic, oil and gas operations, and fisheries.
• Socio‑economic consequences: damage to housing, agriculture and infrastructure; displacement and relief costs; interruption of supply chains.
• Preparedness measures:Early warning systems and regular forecasting updates from national meteorological departments.

• Pre‑emptive evacuations to safe shelters and securing loose objects and buildings.
• Restrictions on coastal activities and port operations; advisories for fishing communities.
• Emergency response planning, stockpiles of relief material and coordination among national and local disaster agencies.
• Long‑term resilience: improved coastal zoning, stronger building codes, mangrove and ecosystem restoration, and community awareness programmes to reduce vulnerability.

 

Quick general knowledge facts

• Seasurface temperature threshold: about 27°C is typically needed to sustain cyclone development.
• Madden–Julian Oscillation (MJO): An eastward‑moving pattern of tropical convection that modulates cyclone favourable windows.

• Hemispheric spin: anticlockwise in the Northern Hemisphere; clockwise in the Southern Hemisphere.
• Regional coordination: IMD provides forecasting for the North Indian Ocean basin and works with international bodies under WMO/ESCAP for naming and warnings.
• Shakhti summary: a named Arabian Sea cyclone (Sri Lanka’s contribution) currently at Severe Cyclonic Storm intensity with winds near 100 km/h — monitored closely for coastal impacts and possible further changes in strength.

 

Minimum Support Prices (MSP): From Safety Net to Self‑Sufficiency

 

Introduction and about MSP

• Definition: MSP is the price at which the government procures specific crops directly from farmers to assure income and shield them from adverse market volatility.
• Purpose: Provides a guaranteed minimum return, prevents distress sales and stabilises rural incomes.
• Institutional framework: MSP recommendations are made by the Commission for Agricultural Costs and Prices (CACP) — an office attached to the Ministry of Agriculture and Farmers Welfare (established 1965) — with final approval by the Cabinet Committee on Economic Affairs (CCEA) chaired by the Prime Minister.
• Pricing rule since 2018–19: MSPs have been fixed at 1.5 times the cost of production (ensuring a minimum 50% margin over cost).
• Coverage: MSP is declared for 22 mandated crops (14 Kharif, 6 Rabi and 2 commercial crops), and a Fair and Remunerative Price (FRP) is declared separately for sugarcane.

 

Why in the news / What’s new (current developments)

• Recent approval: Government of India has approved MSPs for the Rabi Marketing Season (RMS) 2026–27, with an estimated procurement of 297 Lakh Metric Tonnes (LMT).
• Policy shift: Official emphasis has moved from MSP as merely a safety net to using MSP strategically to promote self‑sufficiency — especially in pulses and oilseeds.
• Pulses target: India aims to achieve self‑sufficiency in pulses by 2027 and has committed to procurement of 100% of major pulse production until 2028–29.
• Enhanced support: PM‑AASHA (Pradhan Mantri Annadata Aay Sanrakshan Abhiyan) — the price support umbrella for pulses, oilseeds and copra — has seen an increase in guaranteed procurement funding from ₹45,000 crore to ₹60,000 crore.
• Scale and reach: Number of farmers benefiting from MSP payments rose to 1.84 crore in 2024–25, and total food‑grain procurement increased from 761 LMT (2014–15) to 1,175 LMT (2024–25).
• Digital measures: Greater use of platforms (e‑Samriddhi, e‑Samyukti, Kapas Kisan App) for online registration, quality assessment and direct payments to reduce delays and intermediaries.

 

MSP determination — criteria and process

• recommendation body: CACP analyses and recommends MSPs based on stated criteria.
• Key criteria considered: cost of production, demand‑supply dynamics, prevailing market price trends, inter‑crop price parity and terms of trade between agricultural and non‑agricultural sectors.
• Final approval: CCEA grants final sanction to MSP proposals after reviewing CACP recommendations and related economic considerations.

 

Procurement framework and implementing agencies

• Cereals and coarse cereals: Procured primarily by the Food Corporation of India (FCI) along with designated state procurement agencies.
• Pulses, oilseeds and copra: Procured under the Price Support Scheme (PSS) implemented through PM‑AASHA via agencies such as NAFED (National Agricultural Cooperative Marketing Federation) and NCCF (National Cooperative Consumers’ Federation).
• Cotton and jute: Procured at MSP by specialist agencies — Cotton Corporation of India (CCI) and Jute Corporation of India (JCI).
• Quantity norms: No statutory maximum procurement limit exists for jute and cotton.
• Current estimate: RMS 2026–27 procurement projection is around 297 LMT.

 

Evolution of MSP policy and objectives

• Safety net role: Historically, MSP has been a protective mechanism to ensure minimum returns and prevent price‑induced distress sales.
• Economic stabiliser: By guaranteeing minimum prices, MSP supports rural incomes and contributes to price stability for staple commodities.
• Promotion of crop diversification: Recent policy design uses MSP to encourage nutri‑cereals and oilseeds, and to reduce over‑dependence on water‑intensive crops (e.g. paddy).
• Climate resilience: Higher MSPs for crops such as ragi, nigerseed and mustard are intended to promote climate‑resilient cropping patterns.
• Expansion and scale: Procurement volumes and the number of benefit recipients have increased substantially, signalling broader reach and operational scaling of MSP mechanisms.
• Transition toward self‑sufficiency: Government commitments to procure pulses and expanded budgetary support indicate a strategic move from mere price support to achieving production sufficiency in priority crops.

 

General knowledge — History, geography, importance, institutions

• History: CACP established in 1965 to advise on agricultural prices and costs.

• MSP mechanisms evolved as a policy instrument to support farmers and ensure food security through buffer stocks and PDS.
• Since 2018–19, MSP policy explicitly linked to 1.5× cost metric.
• Geography / reach: MSP procurement operates nationwide via central and state agencies, affecting cropping choices across different agro‑climatic zones.

• Procurement and MSP incentives influence cropping patterns regionally, with targeted support altering local cultivation decisions (e.g. more oilseeds/pulses in suitable regions).
• Importance: Income security for farmers and protection against price shocks.

• Safeguards food security by enabling buffer stock accumulation for the Public Distribution System (PDS).
• Encourages crop diversification and climate‑smart agriculture through price signals.
• Key institutions: Commission for Agricultural Costs and Prices (CACP) — recommends MSPs.

• Cabinet Committee on Economic Affairs (CCEA) — approves MSPs.
• FCI, state procurement agencies, NAFED, NCCF, CCI, JCI — implement procurement operations.
• PM‑AASHA — umbrella programme for price support in pulses, oilseeds and copra.
• Digital platforms: e‑Samriddhi, e‑Samyukti, Kapas Kisan App — for registration, quality testing and direct payments.

 

Key statistics and targets (concise)

• MSP rule: 1.5× cost of production (since 2018–19).
• Crops covered: 22 mandated crops + FRP for sugarcane.
• RMS 2026–27 estimated procurement: 297 LMT.
• Procurement growth: 761 LMT (2014–15) → 1,175 LMT (2024–25).
• Farmers reached: 1.84 crore beneficiaries in 2024–25.
• PM‑AASHA finances: increased from ₹45,000 crore to ₹60,000 crore.
• Pulses target: self‑sufficiency by 2027; 100% procurement commitment through 2028–29.

 

Challenges, risks and considerations

• Fiscal cost: Large‑scale procurement and guaranteed purchases entail significant budgetary and storage costs.
• Market distortions: Persistent high MSPs for certain crops can distort cropping patterns and lead to overproduction or concentrated regional bias.
• Logistics and storage: Increased procurement places pressure on storage infrastructure, transportation and quality management.
• Regional imbalance: Procurement operations have tended to concentrate in a few states, limiting nationwide equitable benefits.
• Administrative capacity: Effective implementation requires timely payments, quality testing and farmer facilitation to avoid exclusion or leakages.
• Long‑term incentives: Balancing short‑term price support with long‑term market reforms and private participation is necessary for sustainability.

 

Policy implications and way forward

• Targeted procurement: Use MSP selectively to promote priority crops (pulses, oilseeds, nutri‑cereals) that advance food security and climate resilience.
• Strengthen digital systems: Expand platforms for online registration, quality testing and instant payments to reduce intermediaries and delays.
• Infrastructure investment: Augment storage and logistics capacity to handle higher procurement volumes without wastage.
• Regional diversification: Encourage procurement operations and procurement centres across more states to broaden farmer participation.
• Fiscal sustainability: Calibrate procurement targets with fiscal constraints and promote private sector participation in procurement and market linkages.
• Complementary measures: Combine MSP with crop insurance, input support, extension services and market access to ensure farmers convert price signals into sustainable production choices.

 

Graded Response Action Plan (GRAP) and the Air Quality Index (AQI) — Delhi‑NCR

 

Introduction and about GRAP

• GRAP is a pre‑emptive and emergency framework to control and reduce air pollution in the Delhi‑National Capital Region (NCR).
• It was formulated under directions of the Supreme Court of India in M.C. Mehta v. Union of India (2016).
• Officially notified and put into effect in 2017; implemented by the Commission for Air Quality Management (CAQM) in coordination with the Ministry of Environment, Forest and Climate Change (MoEFCC) and state authorities.
• The plan provides a graded, time‑bound and coordinated response so measures become progressively stricter as air quality worsens.

 

Why in the news / What’s new / Current trigger

• Delhi’s Air Quality Index (AQI) recently reached the ‘Poor’ category (AQI 201–300).
• Consequent action: CAQM invoked Stage‑I of GRAP across the NCR to prevent further deterioration.
• Stage‑I activation typically triggers basic but immediate control measures intended to stabilise or improve air quality before it reaches more severe categories.
• Such activations are newsworthy because they affect daily life (vehicle checks, dust controls, advisories) and indicate the seasonal or episodic increase of pollution risk.

 

GRAP — legal basis and purpose (history)

• Origin: GRAP was developed following judicial direction (M.C. Mehta v. Union of India, 2016) to provide a structured response to recurring pollution crises.
• Notification: Came into force in 2017 as part of efforts to institutionalise emergency response mechanisms for the Delhi‑
• Purpose: Prevent escalation of pollution to hazardous levels by triggering measures at defined AQI thresholds.

• Ensure coordinated action across multiple agencies and states in the NCR.
• Provide clarity and predictability about what measures will be applied at different pollution intensities.

 

Stages of GRAP (what each stage means and typical measures)

• Stage I – Poor (AQI 201–300): Focus on basic pollution control: road dust management, enhanced street sweeping, water sprinkling on dust‑prone surfaces.

• Enforce vehicle Pollution Under Control (PUC) norms and check vehicle fitness.
• Public advisories to reduce outdoor burning and unnecessary vehicle usage.
• Stage II – Very Poor (AQI 301–400): Stricter actions such as limiting use of diesel generator sets, tighter control of operations at pollution hotspots and industrial sources.

• Increased restrictions on construction activities and more intensive enforcement of dust mitigation.
• Stage III – Severe (AQI 401–450): Additional restrictions on certain vehicle categories, intensified construction halts, and measures to protect vulnerable populations (e.g. remote schooling options).

• Deployment of emergency traffic management and selective industrial curbs.
• Stage IV – Severe+ (AQI > 450): Most stringent measures: ban on entry of heavy goods vehicles, closure of schools, shutdown of non‑essential industries, and widespread restrictions on public activities.

• Emergency coordination across agencies for rapid mitigation and health protection.

 

Air Quality Index (AQI) — what it is and how it works

• Launched by MoEFCC under the Swachh Bharat Mission to simplify public understanding of pollution levels: “One Number – One Colour – One Description.”
• Monitors eight pollutants: PM2.5, PM10, NO2, SO2, CO, O3, NH3 and Pb.
• Data collected under the National Air Monitoring Programme (NAMP) across over 240 cities.
• AQI categories: Good, Satisfactory, Moderately Polluted, Poor, Very Poor, Severe — each linked to likely health impacts and behavioural advisories.
• Purpose:

Translate complex monitoring data into clear information for the public and policymakers.

• Raise awareness, guide immediate actions and inform longer‑term clean air initiatives.

 

Implementation and institutional roles

• Commission for Air Quality Management (CAQM): principal implementing body for GRAP across the NCR; coordinates measures and communications.
• Ministry of Environment, Forest and Climate Change (MoEFCC): policy oversight and technical support; launched the AQI framework.
• State and municipal authorities: carry out on‑ground actions (dust control, construction management, traffic restrictions, industrial compliance).
• Monitoring infrastructure: networks of stations under NAMP provide the data needed to compute AQI and trigger GRAP stages.

 

Geography and sources relevant to Delhi‑NCR

• Delhi‑NCR is a densely populated urban and peri‑urban region comprising the National Capital Territory of Delhi and surrounding districts in neighbouring states.
• Major sources of pollution: Vehicular emissions and congestion.

• Road and construction dust.
• Industrial and thermal power emissions.
• Crop residue (stubble) burning in neighbouring agricultural regions, especially in post‑harvest months.
• Meteorological factors: wintertime temperature inversions and stagnant winds trap pollutants, exacerbating pollution episodes.

 

Importance and benefits of GRAP and AQI systems

• GRAP provides clarity and predictability: citizens and agencies know which measures will be applied at defined AQI thresholds.
• Helps prevent sudden escalation to hazardous air quality, thereby protecting public health.
• Enables coordinated multi‑agency response across administrative boundaries in the NCR.
• AQI empowers the public with actionable information (when to limit outdoor activity, protect vulnerable groups).
• Supports policy decisions and evaluation of mitigation measures over time.

 

Challenges, limitations and criticisms

• Enforcement gaps: variable capacity and will among local authorities can delay or weaken measures.
• Data and coverage: monitoring station distribution and real‑time data quality vary across the NCR, affecting timely decisions.
• Short‑term vs long‑term measures: GRAP is an emergency response; it does not replace the need for sustained structural interventions (clean fuels, transport reform, industrial controls).
• Cross‑boundary coordination: pollution sources lie outside city boundaries (e.g. crop burning), requiring inter‑state cooperation that can be politically and administratively complex.
• Public compliance and communication: clear, consistent messaging is needed to secure community cooperation with restrictions.

 

Practical advice for the public when GRAP stages are activated

• Check the AQI regularly through official portals or apps and follow health advisories.
• Reduce non‑essential travel; prefer public transport where available and properly maintained.
• Ensure vehicle PUC certificates are up to date and avoid unnecessary idling.
• Avoid outdoor exercise when AQI is Poor or worse; protect children, elderly and those with respiratory conditions.
• Do not burn garbage or biomass; follow waste disposal rules.
• Use masks (preferably N95/FFP2 or equivalent) during high pollution days if prolonged outdoor exposure is unavoidable.
• Support and cooperate with local dust‑control measures and construction restrictions.

 

Recommendations for improving effectiveness

• Expand and maintain high‑quality, real‑time monitoring across the NCR for better early warning and decision‑
• Strengthen enforcement mechanisms and inter‑agency coordination to ensure prompt implementation of GRAP measures.
• Invest in long‑term pollution reduction: cleaner public transport, electric mobility, industrial emission controls, and agricultural residue management.
• Improve public communication: timely, simple advisories in multiple languages and targeted guidance for vulnerable groups.
• Foster regional cooperation to address cross‑boundary pollution sources through joint action plans and incentives for cleaner practices.

 

SAIME Model — Sustainable Aquaculture in Mangrove Ecosystems

 

Introduction and About

• SAIME stands for Sustainable Aquaculture in Mangrove Ecosystems, developed by the Nature Environment and Wildlife Society (NEWS) in the Sundarbans, West Bengal.
• It is a communitybased initiative designed to reconcile mangrove conservation with aquaculturebased livelihoods.
• Core idea: integrate mangroves into aquaculture ponds so environmental health and local incomes improve together.

 

Why in News / Current Development

• The Food and Agriculture Organization (FAO) of the United Nations has conferred Global Technical Recognition on the SAIME model.
• FAO recognition highlights SAIME as a technically sound, scalable approach within FAO’s frameworks for sustainable food systems and ecosystem restoration.
• The award brings international attention to the Sundarbans’ locally led climateadaptive solutions and may catalyse wider adoption and funding.

 

What the SAIME Model Does (Mechanics)

• Pond design: 5–30% of aquaculture pond areas are maintained under mangrove cover to conserve habitat within production systems.
• Natural feed: farmers use mangrove litter as natural fodder for Black Tiger Shrimp (Penaeus monodon), reducing the need for chemical or formulated inputs.
• Production focus: supports mixed aquaculture (fish and shrimp) while retaining ecological functions of mangroves.
• Climate adaptation: the integrated design increases resilience to salinity intrusion, sealevel rise and erosion.

 

Economic and Livelihood Impact

• Cost savings: reduced dependence on chemical feed and inputs lowers production costs.
• Profitability: SAIME has been reported to double farmers’ annual net profits in participating communities.
• Livelihood balance: provides a pathway for coastal communities to earn stable incomes without degrading mangrove ecosystems.

 

Environmental and Climate Benefits

• Carbon sequestration: mangroves within ponds act as effective blue carbon sinks, helping store carbon in saline, oxygenpoor soils.
• Coastal protection: integrated mangroves strengthen natural buffers against storms, erosion and tidal surges.
• Biodiversity enhancement: retained mangrove patches serve as nurseries and habitat for fish, crabs and other aquatic species.
• Alignment with climate goals: contributes to FAO objectives on sustainable food systems, ecosystem restoration and carbon mitigation.

 

Sundarbans — Geography and Physical Features

• Location: the Sundarbans is the world’s largest mangrove forest, on the delta formed by the Ganges, Brahmaputra and Meghna rivers along the Bay of Bengal.
• Landscape: a dynamic mosaic of islands and tidal channels, constantly reshaped by tides and sediment flows.
• Distribution: transboundary, spanning parts of India and Bangladesh in tropical and subtropical zones.

 

Sundarbans — Flora and Fauna

• Dominant flora: Heritiera fomes (sundari), Excoecaria agallocha (gewa), Ceriops decandra (goran), Sonneratia apetala (keora).
• Vegetation change: increasing salinity is causing tall trees to be replaced by dwarf species, altering forest structure.
• Key fauna: Bengal tiger, Gangetic and Irrawaddy dolphins, estuarine crocodiles, olive ridley turtles, and myriad fish, crustacean and bird species.
• Ecological role: crucial nursery grounds for fisheries and a buffer protecting coasts from storms and wave energy.

 

Socio‑economic and Cultural Landscape

• Population: over 12 million people depend on the estuarine Sundarbans (approximately 4.5 million in India and 7.5 million in Bangladesh).
• Livelihoods: communities rely on fishing, aquaculture, honey and forest products.
• Cultural ties: local beliefs and practices, such as worship of Bonbibi, embody traditions of coexistence with wildlife and mangroves.

 

Protection, Designation and Policy Frameworks

• UNESCO World Heritage: parts of the Sundarbans were designated in 1987 (India) and 1997 (Bangladesh).
• Ramsar listing: Sundarban Wetland (India) declared a Wetland of International Importance in 2019.
• Bilateral cooperation: an India–Bangladesh Memorandum of Understanding (2011) promotes joint conservation and monitoring of the shared ecosystem.
• Protected areas: the Sundarbans Biosphere Reserve includes national parks and wildlife sanctuaries on both sides of the border.

 

Significance of Mangroves (General Knowledge)

• Carbon storage: mangroves store large amounts of carbon per hectare because organic matter decomposes slowly in saline, oxygenpoor soils.
• Coastal defence: they reduce wave energy by 5–35% and can cut flood depths by up to 70%, protecting communities from storms and tsunamis.
• Biodiversity hotspots: Indian mangroves harbour over 5,700 species, supporting global fisheries and marine food webs.
• Livelihood goods: mangroves provide honey, fruits, leaves and nursery habitats that sustain millions of coastal livelihoods.

 

Threats and Challenges

• Climate threats: sealevel rise, salinity intrusion and increased storm intensity threaten mangrove integrity and coastal settlements.
• Anthropogenic pressures: conversion for intensive aquaculture, deforestation and pollution undermine ecosystem services.
• Ecological shifts: salinitydriven replacement of tall trees by dwarf species reduces habitat complexity and resilience.
• Governance needs: crossborder coordination, local stewardship and sustained finance are required to maintain gains.

 

Scalability, Policy Implications and Recommendations

• Replication potential: the SAIME template (5–30% mangrove cover, use of litter as feed, community governance) is adaptable to other tropical and subtropical coastal zones.
• Policy actions:
• incorporate mangroveintegrated aquaculture into national climate adaptation and blue economy strategies;
• incentivise communitybased approaches and payments for ecosystem services, including blue carbon credits;
• ensure monitoring of ecological and socioeconomic outcomes to guide adaptive management.
• Community capacity: invest in training, technical support and market access for farmers practising climateadaptive aquaculture.
• International support: leverage FAO recognition to mobilise funding, research partnerships and crossborder knowledge exchange.

 

Key Takeaways

• SAIME provides a practical model that balances mangrove conservation with profitable aquaculture, delivering environmental, social and climate benefits.
• FAO Global Technical Recognition spotlights SAIME as a credible, scalable approach within global efforts on sustainable food systems and ecosystem restoration.
• Protecting and integrating mangroves is essential for coastal resilience, biodiversity conservation and sustaining the livelihoods of millions in the Sundarbans and beyond.

 

Northeast Monsoon (October–December) — Timely Onset 2025

 

Introduction and About

• The northeast monsoon, also called the retreating monsoon, typically occurs from October to December as the southwest monsoon withdraws from the Indian subcontinent.
• In October the land cools faster than the ocean, creating a highpressure zone over the subcontinent and a relative low over the surrounding seas; wind flow reverses and northeasterly winds develop.
• These northeasterlies cross the Bay of Bengal, pick up moisture, and deliver rainfall chiefly to the southeastern coast of India — notably Tamil Nadu and south Andhra Pradesh — and parts of Sri Lanka.
• The 2025 season recorded a timely onset in October, bringing much‑needed relief to southern peninsular India.

 

Why in the News / Current Situation (October 2025)

• Meteorological agencies observed an on‑time arrival of the northeast monsoon in October 2025.
• The early/normal onset has eased immediate watersecurity concerns in Tamil Nadu and Andhra Pradesh by contributing to reservoir inflows and soil moisture.
• Agricultural stakeholders welcomed the rains as they support key rabi sowing and maturation of late kharif crops.
• Local authorities and disaster managers monitored rainfall distribution because a timely onset reduces drought risk but can still produce intense events and urban flooding in vulnerable locations.

 

How the Northeast Monsoon Develops (Meteorology)

• Transition: As the southwest monsoon fades (June–September), the pressure gradients reverse due to differential cooling between land and sea.
• Wind shift: Winds change direction from prevailing southwesterlies to northeasterlies that blow from the land toward the sea and then back after crossing the Bay of Bengal.
• Moisture pickup: Northeasterly winds traverse the warm Bay of Bengal and gain moisture before making landfall on the eastern and southeastern coasts.
• Rain generation: On meeting coastal terrain (and sometimes low pressure/cyclonic systems in the Bay), these moistureladen winds condense and produce rainfall concentrated over Tamil Nadu, south Andhra Pradesh and adjoining areas.

 

Geographic Extent and Physical Factors

• Primary areas affected: Tamil Nadu, south Andhra Pradesh, parts of coastal Puducherry and Sri Lanka’s northern/eastern districts.
• Coastal orientation: The southeastfacing coastlines are directly exposed to Bay of Bengal moisture; orographic lifting against the Eastern Ghats enhances rainfall in pockets.
• Local variation: Western Ghats are less involved; rainfall distribution is patchy and highly dependent on wind trajectories, sea‑surface temperatures and local topography.
• Interaction with cyclones: Post‑monsoon cyclones in the Bay of Bengal can amplify rainfall and extend impacts inland.

 

Historical and Climatological Context (GK)

• Historically, the northeast monsoon is shorter and less spatially widespread than the southwest monsoon but vital for southern peninsular rainfall budgets.
• Seasonal timing: Typical window is October through December, though onset and withdrawal dates vary interannually.
• Interannual variability: Influenced by larger climate drivers such as El Niño–Southern Oscillation (ENSO), the Indian Ocean Dipole (IOD) and local sea‑surface temperature anomalies.
• Recent trends: Climatic studies indicate increasing variability and a tendency for more intense, episodic rainfall events even when total seasonal amounts may not change uniformly.

 

Importance — Agriculture, Water Security and Economy

• Agriculture: Provides the principal rainfall for Tamil Nadu, supporting paddy, pulses, oilseeds and other rabi crops.

• Supports planting and early growth stages of rabi crops sown after kharif harvests.
• Water resources:
• Replenishes reservoirs, tanks and groundwater in the southern peninsula, helping through the dry months.
• Critical for drinkingwater supply and irrigation that are less served by southwest monsoon rains.
• Economy and livelihoods:
• Stabilises rural incomes by reducing crop failure risk; benefits fisheries and allied sectors.
• Reduces the need for emergency water‑supply measures and lowers pressure on water transfers.

 

Benefits and Risks

• Benefits: Drought relief and improved water storage levels.

• Favourable conditions for rabi cropping and rural livelihoods.
• Risks: Intense rains can cause flash floods, urban inundation (e.g. in Chennai and coastal towns), coastal erosion and localised landslides.

• Post‑monsoon cyclones can exacerbate damage and disrupt transport, fisheries and power supply.
• Uneven spatial distribution may leave some areas short even when totals look adequate.

 

2025 Specific Impacts and Observations

• Timely onset in October 2025 brought early relief for agriculture and increased reservoir inflows across Tamil Nadu and parts of Andhra Pradesh.
• Authorities used the period to replenish drinkingwater reserves and support rabi sowing plans.
• Continued monitoring was necessary because timely onset does not eliminate the risk of heavy spells or cyclonic enhancements later in the season.

 

Forecasting, Preparedness and Recommended Actions

• Forecasting: Rely on regional meteorological departments for short‑term and seasonal outlooks; track Bay of Bengal sea‑surface temperatures and synoptic systems.

• Preparedness actions for governments and communities:
• Manage reservoir outflows to balance flood control with storage needs.
• Ensure early‑warning systems and community evacuation plans are in place for coastal and low‑lying urban areas.
• Prioritise clearing urban drainage, protecting critical water infrastructure and supporting farmers with timely advisories on sowing and crop protection.
• Long‑term adaptation: Improve water‑harvesting, groundwater recharge and climate‑resilient cropping patterns.

• Strengthen coastal defences and urban planning to reduce flood vulnerability.

 

Quick GK Facts (Concise Points)

• Typical season: October–December.
• Also known as: Retreating monsoon or North‑East monsoon.
• Main beneficiaries: Tamil Nadu, south Andhra Pradesh, coastal Puducherry, parts of Sri Lanka.
• Primary role: Supplies major portion of annual rainfall for Tamil Nadu and supports rabi crops and water security.
• Drivers of variability: ENSO, Indian Ocean Dipole, Bay of Bengal sea‑surface temperatures, cyclonic activity.

 

Closing Note on Significance

• The northeast monsoon, though shorter and more limited in area than the southwest monsoon, is crucial for southern India’s agriculture and water resources; the timely 2025 onset provided important, immediate relief while emphasising the need for continued monitoring and preparedness against episodic heavy rainfall and cyclone risks.