The State of Environmental Migration 2017 Environmental Migration

Total Page:16

File Type:pdf, Size:1020Kb

The State of Environmental Migration 2017 Environmental Migration Essai Essai This volume is the seventh in the annual series and the second of its kind published with the Presses Universitaires de Liège. The State of Environmental Migration aims to provide its readership with the most updated assessments on recent events and evolving dynamics of environmental migration throughout the world. Each year, the editors select the best graduate student work from the course “Environment and Migration”, taught by François Gemenne and Caroline Zickgraf, at the Paris School of International Affairs (PSIA) of Sciences Po. Presented in this edition are displacements induced by some of the most dramatic disaster events of 2016, including Hurricane Matthew, as well as analyses of migration flows related to a variety of environmental occurrences throughout the year spanning the globe. SEM 2017 thus represents another stepping stone towards understanding the broad spectrum that is The State of Environmental Migration 2017 environmental migration. The State of Environmental Migration 2017 - A review of 2016 François Gemenne is Director of the Hugo Observatory at the University of Liège, where he is senior research associate with the Belgian Fund for Scientific Research (F.R.S.-FNRS).Caroline Zickgraf is Deputy Director of the Hugo Observatory as well as Post-doctoral Fellow with the Belgian Fund for Scientific Research (F.R.S.-FNRS).Luka De Bruyckere is Research Assistant at the Hugo Observatory. F. Gemenne, C. Zickgraf, L. De Bruyckere (eds.) F. Françoise Lempereur (dir.) F. Gemenne, C. Zickgraf, L. De Bruyckere (eds.) Presses Universitaires de Liège Presses Universitaires de Liège Presses Universitaires de Liège The State of Environmental Migration 01-SEM2017_21nov.indd 1 21/11/2017 18:03 Presses Universitaires de Liège Tél. : +32 (4) 366 50 22 Fax. : +32 (4) 366 57 98 Courriel : [email protected] Place de La République française, 41 Bât. O1 (7e étage) 4000 Liège – Belgium Site : www.presses.uliege.be © 2017 Tous droits de reproduction, d’adaptation et de traduction réservés pour tous pays Maquette de couverture : Julien NOISET Mise en page : Alain CHEVALLIER Relecture des épreuves : Alexander BRAMBLE D/2017/12.839/30 ISBN : 978-2-87562-148-1 Imprimé en Belgique Pour citer cet ouvrage : The State of Environmental Migration 2017: A review of 2016 Liège, Presses Universitaires de Liège, 2017 Mots-clés : The State of Environmental Migration 2017: A review of 2016 Illustration de couverture : Roger JOB Les premiers derniers hommes 01-SEM2017_21nov.indd 2 21/11/2017 18:03 François GEMENNE, Caroline ZICKGRAF, Luka DE BRUYCKERE, (EDS.) The State of Environmental Migration 2017 A review of 2016 Presses Universitaires de Liège 01-SEM2017_22nov.indd 3 22/11/2017 10:50 Dans la même collection ARON Jacques, La langue allemande sous la croix gammée. Le singulier dictionnaire de Trübner, 2017. GEMENNE François, ZICKGRAF Caroline, IONESCO Dina (eds.), The State of Environmental Migration 2016. A review of 2015, 2016. GEENEN Vincent, Voyage[s] à travers le thymus, 2016. BRAHY Rachel, DUMONT Élisabeth (dir.), Dialogues sur la Diversité, 2015. DE REGOYOS JACOBO, Belgistan. Le laboratoire nationaliste, 2014. PIROTTE Gautier et GODIN Julie, Coopération au développement. Enquête sur les Initiatives Populaires de Solidarité Internationale, 2013. GOOSSENS Pierre J., L’or à travers les âges. Une histoire pas toujours dorée, 2013. KUTY Olgierd, SCHOENAERS Frédéric, DUBOIS Christophe et DETHIER Baptiste, La médiation scolaire. Un regard des acteurs sur leurs pratiques, 2012. 01-SEM2017_21nov.indd 4 21/11/2017 18:03 Table of contents Introduction ................................................................................... 7 East Asia ‘Airpocalypse’ ............................................................................... 11 Smog induced migrations in Beijing Yubai Wu South Asia Cyclone Rouna and Displacement in Sri Lanka ............................. 31 A natural disaster and its underlying patterns of vulnerability Maximilian Friedrich Southeast Asia Stories of ‘No Escape’ ................................................................... 63 Unravelling the unrevealed displacement patterns of Indonesia’s forest—peat fires and haze crisis Sairindri Gita Christisabrina Adapting to Food Insecurity in Timor-Leste ................................... 99 Exploring the vulnerability of rural households impacted by the El Niño induced drought in 2016 Michael Twigg Europe Shaking Ground .......................................................................... 119 Dislocation management and policy response to the seismic sequence in Central Italy Rachele Miscioscia 01-SEM2017_21nov.indd 5 21/11/2017 18:03 North America Rethinking Resettlement ............................................................. 145 Hurricane Matthew and Protracted displacement in Haiti Kristiane Davidson Oceania Relocation or Reconstruction? .................................................... 165 Analysing population movements and reconstruction policies in Fiji Islands after the cyclone Winston Christophe Picamilh West Africa Forest Conservation and Forced Relocation in Côte D’Ivoire ...... 185 The eviction of cocoa farmers from Mont Péko National Park Lavinia Giulia Pomarico Editors Contributors ............................................................................... 209 Editorial team ............................................................................. 213 01-SEM2017_21nov.indd 6 21/11/2017 18:03 Introduction 2016 presented yet another year in which millions of people were dis- placed by natural disasters. According to the Internal Displacement Monitoring Centre (IDMC), the assemblage of natural catastrophes forced a total of 19.6 million people to flee their homes globally (GRID, 2017). This figure does not, however, include those displaced across internation- al borders, a frequent occurrence in borderland areas and areas affected by both conflict and disaster. Nor does it account for those people who leave pre-emptively or are forced to in response to development pro- jects or other progressive environmental changes. We are far from the fist to assert that quantifying environmental migrants, in response to rap- idly occurring disasters or progressive environmental changes, is not an easy task (if even a possible one). Certainly, getting accurate figures in the immediate aftermath of crisis in order to analyse these events pos- es challenges to the research community, including our authors. Yet, ad- mirably, the students of the course “Environment and Migration” at the Paris School of International Affairs (PSIA) of Sciences Po, endeavoured to collect the most up-to-date available figures, reports, and information linking environmental changes (disasters or otherwise) to migration and displacement flows and outcomes. This is not merely a question of the accessibility of figures. One of the reasons ‘environmental migrants’ are difficult to count is due to the chal- lenge of definition. Indeed, environmental migration frequently faces crit- icism for being too vague and lacking a consensual, precise definition or legal category. However, we take quite the opposite position—environ- mental migration is purposely broad because it incorporates such a huge array of links between the environment and human mobility. We assert that like ‘economic migration’, environmental migration as a field is not meant to isolate the environment as a driver or present a singular, causal link between the environment and migration; here we simply privilege cases in which the environment played a key role in driving mobility or was majorly affected by population movements. The State of Environmental Migration 2017: A review of 2016, there- fore, quite intentionally includes such heterogeneity. As seen in previous editions, students’ freedom of choice resulted in a range of case studies representing only a sliver of the diversity of the environment-migration nexus. Authors analyse a range of environmental threats and subsequent 01-SEM2017_21nov.indd 7 21/11/2017 18:03 The State of Environmental Migration 2017: A review of 2016 mobility responses across the continents—from air pollution in China to earthquakes in Italy and hurricanes in the Caribbean. Importantly, authors do not stop at detailing the environmental event and describing mobility patterns. They incorporate, and often privilege, the projects, policies and programmes that pre-empt and/or follow. One chapter, for example, anal- yses the forced eviction of cocoa farmers in Côte d’Ivoire. The inclusion of politics and policies illuminates their essential role in shaping mobility (and immobility), not just as a response to environmental change or dis- aster (e.g. evacuation systems) but also as they drive displacement and migration (e.g. development policies and projects). Shedding light on the various contexts in which environmental change impacts migration and displacement patterns, while evaluating the as- sociated environmental and migration policies, this volume once again demonstrates the key role of political and social scientists in the domain. - 8 - 01-SEM2017_21nov.indd 8 21/11/2017 18:03 East Asia 01-SEM2017_21nov.indd 9 21/11/2017 18:03 01-SEM2017_21nov.indd 10 21/11/2017 18:03 ‘Airpocalypse’ Smog induced migrations in Beijing Yubai Wu n an early morning of December 2016, the residents of Beijing awoke Oto a world engulfed in a suffocating thick layer of nicotine-smelling haze hovering over the city’s skies. Looking out of a window in an apart- ment building located in one of the
Recommended publications
  • Cyclone Factsheet UPDATE
    TROPICAL CYCLONES AND CLIMATE CHANGE: FACTSHEET CLIMATECOUNCIL.ORG.AU TROPICAL CYCLONES AND CLIMATE CHANGE: FACT SHEET KEY POINTS • Climate change is increasing the destructive power of tropical cyclones. o All weather events today, including tropical cyclones, are occurring in an atmosphere that is warmer, wetter, and more energetic than in the past. o It is likely that maximum windspeeds and the amount of rainfall associated with tropical cyclones is increasing. o Climate change may also be affecting many other aspects of tropical cyclone formation and behaviour, including the speed at which they intensify, the speed at which a system moves (known as translation speed), and how much strength is retained after reaching land – all factors that can render them more dangerous. o In addition, rising sea levels mean that the storm surges that accompany tropical cyclones are even more damaging. • While climate change may mean fewer tropical cyclones overall, those that do form can become more intense and costly. In other words, we are likely to see more of the really strong and destructive tropical cyclones. • A La Niña event brings an elevated tropical cyclone risk for Australia, as there are typically more tropical cyclones in the Australian region than during El Niño years. BACKGROUND Tropical cyclones, known as hurricanes in the North Atlantic and Northeast Pacific, typhoons in the Northwest Pacific, and simply as tropical cyclones in the South Pacific and Indian Oceans, are among the most destructive of extreme weather events. Many Pacific Island Countries, including Fiji, Vanuatu, Solomon Islands and Tonga, lie within the South Pacific cyclone basin.
    [Show full text]
  • Pull up Banner Tropical Cycclone.Ai
    Air released Eye air Warm air Cold rises Steady winds Eye Warm air A tropical Cyclone (also known as typhoons or hurricanes) is a violent rotating windstorm that develops over warm tropical waters warner than 26.5°C and located between 5° and 15°latitude. Tropical Cyclones affect nearly all Pacific Islands countries and are the most frequent hazard to affect Fiji with around 2 – 3 cyclones occurring every year. As a result of climate change, cyclone frequency has doubled in the last decade. The cyclone season in Fiji runs from November to April and some cyclones do occur outside the season. T ropical Cyclone Strong winds can devastating western Viti Levu continue for hours, days, and killing seven people. even causing widespread damage to buildings, Storm surges and waves infrastructure and created by low atmospheric vegetation and causing pressure and strong cyclonic loss of life. winds blowing over long distance. A storm surge is a Wind speed levels of a raised dome of seawater about tropical cyclone are; 60-80km wide and 2-5m higher Gale Force Winds : 63-87 km/h than normal sea level. As the Storm force winds : 88-117 km/h cyclone makes landfall, storm Hurricane force winds : 117 + km/h surge and waves inundate coastal areas. At the coast, Torrential rains can result in widespread flash flooding and storm surge and waves are the river flooding. Up to 600mm and more of high intensity rain can greatest threat to life and be produced in one day. These rains can also trigger property and also cause severe landslides in hilly areas, which may already be sodden due to coastal erosion.
    [Show full text]
  • The Impact of Tropical Cyclone Hayan in the Philippines: Contribution of Spatial Planning to Enhance Adaptation in the City of Tacloban
    UNIVERSIDADE DE LISBOA FACULDADE DE CIÊNCIAS Faculdade de Ciências Faculdade de Ciências Sociais e Humanas Faculdade de Letras Faculdade de Ciências e Tecnologia Instituto de Ciências Sociais Instituto Superior de Agronomia Instituto Superior Técnico The impact of tropical cyclone Hayan in the Philippines: Contribution of spatial planning to enhance adaptation in the city of Tacloban Doutoramento em Alterações Climáticas e Políticas de Desenvolvimento Sustentável Especialidade em Ciências do Ambiente Carlos Tito Santos Tese orientada por: Professor Doutor Filipe Duarte Santos Professor Doutor João Ferrão Documento especialmente elaborado para a obtenção do grau de Doutor 2018 UNIVERSIDADE DE LISBOA FACULDADE DE CIÊNCIAS Faculdade de Ciências Faculdade de Ciências Sociais e Humanas Faculdade de Letras Faculdade de Ciências e Tecnologia Instituto de Ciências Sociais Instituto Superior de Agronomia Instituto Superior Técnico The impact of tropical cyclone Haiyan in the Philippines: Contribution of spatial planning to enhance adaptation in the city of Tacloban Doutoramento em Alterações Climáticas e Políticas de Desenvolvimento Sustentável Especialidade em Ciências do Ambiente Carlos Tito Santos Júri: Presidente: Doutor Rui Manuel dos Santos Malhó; Professor Catedrático Faculdade de Ciências da Universidade de Lisboa Vogais: Doutor Carlos Daniel Borges Coelho; Professor Auxiliar Departamento de Engenharia Civil da Universidade de Aveiro Doutor Vítor Manuel Marques Campos; Investigador Auxiliar Laboratório Nacional de Engenharia Civil(LNEC)
    [Show full text]
  • Pacific Study (Focusing on Fiji, Tonga and Vanuatu
    1 EXECUTIVE SUMMARY 1.1 Hazard exposure 1.1. Pacific island countries (PICs) are vulnerable to a broad range of natural disasters stemming from hydro-meteorological (such as cyclones, droughts, landslide and floods) and geo-physical hazards (volcanic eruptions, earthquakes and tsunamis). In any given year, it is likely that Fiji, Tonga and Vanuatu are either hit by, or recovering from, a major natural disaster. 1.2. The impact of natural disasters is estimated by the Pacific Catastrophe Risk Assessment and Financing Initiative as equivalent to an annualized loss of 6.6% of GDP in Vanuatu, and 4.3% in Tonga. For Fiji, the average asset losses due to tropical cyclones and floods are estimated at more than 5%. 1.3. In 2014, Tropical Cyclone (TC) Ian caused damage equivalent to 11% to Tonga's GDP. It was followed in 2018 by damage close to 38% of GDP from TC Gita. In 2015, category five TC Pam displaced 25% of Vanuatu's population and provoked damage estimated at 64% of GDP. In Fiji, Tropical Cyclone Winston affected 62% of the population and wrought damage amounting to 31% of GDP, only some three and a half years after the passage of Tropical Cyclone Evan. 1.4. Vanuatu and Tonga rank number one and two in global indices of natural disaster risk. Seismic hazard is an ever-present danger for both, together with secondary risks arising from tsunamis and landslides. Some 240 earthquakes, ranging in magnitude between 3.3 and 7.1 on the Richter Scale, struck Vanuatu and its surrounding region in the first ten months of 2018.
    [Show full text]
  • Cyclone Winston Fiji
    UNICEF PACIFIC CYCLONE WINSTON SITUATION REPORT Reporting Period 3-4 March 2016 Cyclone Winston Fiji Humanitarian Situation Report #6 ©UNICEF/2016/Sokhin Photo: Water tanks are a vital source of rural life in Fiji. This is just one of many destroyed by As of 4 March 2016 Cyclone Winston. UNICEF prioritises provision of clean safe drinking water and sanitation supplies to prevent the spread of disease. 120,000 Estimated # of children likely to have been Highlights moderately to severely affected (40% of child population) Category 5 Cyclone Winston, the strongest cyclone to ever hit Fiji and with some of the highest wind speeds at landfall ever recorded globally, severely affected around 40% of the population. 350,000 Estimated # of people likely to have been US$ 38.6 million Flash Appeal has been launched, including moderately to severely affected (40% of US$ 7.1 million for UNICEF projects. total population) An estimated 29,000+ people are living in 722 evacuation centres, Up to 250,000 people in need of including in 71 schools (Evacuation centres in Central Division WASH assistance due to electricity, closed). water and sewerage service disruptions UNICEF supplies have provided safe drinking water for over 26,000 people and are assisting 6,000 students to return to school. UNICEF Appeal within A ship with school and WASH supplies from UNICEF Vanuatu has UN Flash Appeal arrived in Suva Harbour; supplies from UNICEF Solomon Islands US$ 7.1 million being packed for shipping to Fiji; Emergency Charter Flight with health and school supplies arriving on 7 March. UNICEF’s response with partners US$ 369,849 of UNICEF supplies pre-positioned in Fiji have been provided to the Government of Fiji and are being distributed to the most affected people.
    [Show full text]
  • Hazard Incidences in Bangladesh in May, 2016
    Hazard Incidences in Bangladesh in May, 2016 Overview of Disaster Incidences in May 2016 In the month of May, quite a large number of disaster in terms of both natural and manmade hit Bangladesh including the destructive Cyclone “Roanu”. Like the previous month, Nor’wester, Lightening, Heat Wave, Tornedo, Boat and Trawler Capsize, Riverbank Erosion, Flash Flood, Embankment Collapse, Hailstorm, Earthquake were the natural incidents that occurred in this month. Fire Incidents were the only manmade disaster occurred in this month. Two Incidents of Nor’wester affected 11 districts on 2nd and 6th of May and. Lightning occurred in 17 districts on 2nd, 6th, 7th, 14th, 15th, 17th and 31st of this month. In this month, four incidents of boat capsize occurred on 2nd and 29th in invidual places. In addition, three incidents of embankment collapse in Satkhira, Khulna and Netrokona were reported, respectively. On 8th May, flash flood occurred in Sylhet and Moulvibazar districts. An incident of hailstrom in Lalmonirhat district on 6th May, a death incident of heatwave at Joypurhat district on 2nd May, a riverbank erosion incident on 17th May at Saghata and Fulchari of Gaibandha, and three incidents of storm at Barisal, Jhenaidah and Panchgarh district also reported in the national dailies. Furthermore, a Cyclone named “Roanu” made landfall in the southern coastal region of Bangladesh on 21st of this month. The storm brought heavy rain, winds and affected 18 coastal districts of which Chittagong, Cox’s Bazar, Bhola, Barguna, Lakshmipur, Noakhali and Patuakhali were severely affected. Beside these, 14 fire incidents were occurred in 8 districts, six of them were occurred in Dhaka.
    [Show full text]
  • Study Report on Gaja Cyclone 2018 Study Report on Gaja Cyclone 2018
    Study Report on Gaja Cyclone 2018 Study Report on Gaja Cyclone 2018 A publication of: National Disaster Management Authority Ministry of Home Affairs Government of India NDMA Bhawan A-1, Safdarjung Enclave New Delhi - 110029 September 2019 Study Report on Gaja Cyclone 2018 National Disaster Management Authority Ministry of Home Affairs Government of India Table of Content Sl No. Subject Page Number Foreword vii Acknowledgement ix Executive Summary xi Chapter 1 Introduction 1 Chapter 2 Cyclone Gaja 13 Chapter 3 Preparedness 19 Chapter 4 Impact of the Cyclone Gaja 33 Chapter 5 Response 37 Chapter 6 Analysis of Cyclone Gaja 43 Chapter 7 Best Practices 51 Chapter 8 Lessons Learnt & Recommendations 55 References 59 jk"Vªh; vkink izca/u izkf/dj.k National Disaster Management Authority Hkkjr ljdkj Government of India FOREWORD In India, tropical cyclones are one of the common hydro-meteorological hazards. Owing to its long coastline, high density of population and large number of urban centers along the coast, tropical cyclones over the time are having a greater impact on the community and damage the infrastructure. Secondly, the climate change is warming up oceans to increase both the intensity and frequency of cyclones. Hence, it is important to garner all the information and critically assess the impact and manangement of the cyclones. Cyclone Gaja was one of the major cyclones to hit the Tamil Nadu coast in November 2018. It lfeft a devastating tale of destruction on the cyclone path damaging houses, critical infrastructure for essential services, uprooting trees, affecting livelihoods etc in its trail. However, the loss of life was limited.
    [Show full text]
  • RRP Climate Risk Assessment and Management Report
    Emergency Assistance Project (RRP BAN 51274-001) CLIMATE RISK ASSESSMENT AND MANAGEMENT REPORT I. Basic Project Information Project Title: BAN (51274-001): Emergency Assistance Project Project Cost (in $ million): $120 million Location: Coxsbazar District: Ukhia Upazila (subdistrict) (21.22 N, 92.10 E) and Teknaf Upazila (subdistrict) (21.06 N, 92.20 E) Sector/Subsectors: • Water and other urban infrastructure and services/Urban flood protection, urban sanitation, urban solid waste management and urban water supply • Energy/Electricity transmission and distribution • Transport/Road transport (non-urban) Theme: Inclusive economic growth; environmentally sustainable growth Brief Description: Beginning August 2017, Bangladesh has received over 700,000 displaced persons in Myanmar as a result of events in the neighboring Rahkine State, joining around 400,000 displaced persons who had arrived in waves from Rahkine over the past decades. They are living in 32 camps in the Coxsbazar district, with over 600,000 living in the mega-camp at Kutupalong-Balukhali. The large influx of displaced persons has caused a huge strain on the local people and economy. The Emergency Assistance Project will support the Government of Bangladesh in addressing the immediate needs of the displaced persons in the Coxsbazar district with the objective to help avert the humanitarian crisis. The project scope includes the improvement of water supply and sanitation, disaster risk management, sustainable energy supply, and access roads. The south-eastern part of Bangladesh where the project is being proposed is exposed to various types of natural hazards in an extremely fragile environment with cyclone and monsoon seasons, including flooding, landslides, wind storms, lightning, fires, heat waves, and cold spells.
    [Show full text]
  • Global Climate Risk Index 2018
    THINK TANK & RESEARCH BRIEFING PAPER GLOBAL CLIMATE RISK INDEX 2018 Who Suffers Most From Extreme Weather Events? Weather-related Loss Events in 2016 and 1997 to 2016 David Eckstein, Vera Künzel and Laura Schäfer Global Climate Risk Index 2018 GERMANWATCH Brief Summary The Global Climate Risk Index 2018 analyses to what extent countries have been affected by the impacts of weather-related loss events (storms, floods, heat waves etc.). The most recent data available – for 2016 and from 1997 to 2016 – were taken into account. The countries affected most in 2016 were Haiti, Zimbabwe as well as Fiji. For the period from 1997 to 2016 Honduras, Haiti and Myanmar rank highest. This year’s 13th edition of the analysis reconfirms earlier results of the Climate Risk Index: less developed countries are generally more affected than industrialised countries. Regarding future climate change, the Climate Risk Index may serve as a red flag for already existing vulnerability that may further increase in regions where extreme events will become more frequent or more severe due to climate change. While some vulnerable developing countries are frequently hit by extreme events, for others such disasters are a rare occurrence. It remains to be seen how much progress the Fijian climate summit in Bonn will make to address these challenges: The COP23 aims to continue the development of the ‘rule-book’ needed for implementing the Paris Agreement, including the global adaptation goal and adaptation communication guidelines. A new 5-year-work plan of the Warsaw International Mechanism on Loss and Damage is to be adopted by the COP.
    [Show full text]
  • Rainfall Contribution of Tropical Cyclones in the Bay of Bengal Between 1998 and 2016 Using TRMM Satellite Data
    atmosphere Article Rainfall Contribution of Tropical Cyclones in the Bay of Bengal between 1998 and 2016 using TRMM Satellite Data Md. Jalal Uddin 1,2 , Yubin Li 1,2,* , Kevin K. Cheung 3,* , Zahan Most. Nasrin 1 , Hong Wang 1,2, Linlin Wang 4 and Zhiqiu Gao 1 1 Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing 210044, China; [email protected] (M.J.U.); [email protected] (Z.M.N.); [email protected] (H.W.); [email protected] (Z.G.) 2 Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China 3 Department of Earth and Environmental Sciences, Macquarie University, Sydney, NSW 2109, Australia 4 State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; [email protected] * Correspondence: [email protected] (Y.L.); [email protected] (K.K.C.) Received: 26 September 2019; Accepted: 7 November 2019; Published: 12 November 2019 Abstract: In the Bay of Bengal (BoB) area, landfalling Tropical Cyclones (TCs) often produce heavy rainfall that results in coastal flooding and causes enormous loss of life and property. However, the rainfall contribution of TCs in this area has not yet been systematically investigated. To fulfil this objective, firstly, this paper used TC best track data from the Indian Meteorological Department (IMD) to analyze TC activity in this area from 1998 to 2016 (January–December). It showed that on average there were 2.47 TCs per year generated in BoB.
    [Show full text]
  • Chlorophyll-A, SST and Particulate Organic Carbon in Response to the Cyclone Amphan in the Bay of Bengal
    J. Earth Syst. Sci. (2021) 130:157 Ó Indian Academy of Sciences https://doi.org/10.1007/s12040-021-01668-1 (0123456789().,-volV)(0123456789().,-volV) Chlorophyll-a, SST and particulate organic carbon in response to the cyclone Amphan in the Bay of Bengal 1, 2 1 MD RONY GOLDER * ,MD SHAHIN HOSSAIN SHUVA ,MUHAMMAD ABDUR ROUF , 2 3 MOHAMMAD MUSLEM UDDIN ,SAYEDA KAMRUNNAHAR BRISTY and 1 JOYANTA BIR 1Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna 9208, Bangladesh. 2Department of Oceanography, University of Chittagong, Chittagong 4331, Bangladesh. 3Development Studies Discipline, Khulna University, Khulna 9208, Bangladesh. *Corresponding author. e-mail: [email protected] MS received 11 November 2020; revised 20 April 2021; accepted 24 April 2021 This study aims to explore the variation of Chlorophyll-a (Chl-a), particulate organic carbon (POC) and sea surface temperature (SST) before (pre-cyclone) and after (post-cyclone) the cyclone Amphan in the Bay of Bengal (BoB). Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua satellite level-3 data were used to assess the variability of the mentioned parameters. Chl-a concentration was observed to be significantly (t = À3.16, df & 18.03, p = 0.005) high (peak 2.30 mg/m3) during the post-cyclone period compared to the pre-cyclone (0.19 mg/m3). Similarly, POC concentration was significantly (t = 3.41, df & 18.06, p = 0.003) high (peak 464 mg/m3) during the post-cyclone compared to the pre-cyclone (59.40 mg/m3). Comparatively, high SST was observed during the pre-cyclone period and decreases drastically with a significant difference (t = 14, df = 33, p = 1.951e-15) after the post-cyclone period.
    [Show full text]
  • On Tropical Cyclones
    Frequently Asked Questions on Tropical Cyclones Frequently Asked Questions on Tropical Cyclones 1. What is a tropical cyclone? A tropical cyclone (TC) is a rotational low-pressure system in tropics when the central pressure falls by 5 to 6 hPa from the surrounding and maximum sustained wind speed reaches 34 knots (about 62 kmph). It is a vast violent whirl of 150 to 800 km, spiraling around a centre and progressing along the surface of the sea at a rate of 300 to 500 km a day. The word cyclone has been derived from Greek word ‘cyclos’ which means ‘coiling of a snake’. The word cyclone was coined by Heary Piddington who worked as a Rapporteur in Kolkata during British rule. The terms "hurricane" and "typhoon" are region specific names for a strong "tropical cyclone". Tropical cyclones are called “Hurricanes” over the Atlantic Ocean and “Typhoons” over the Pacific Ocean. 2. Why do ‘tropical cyclones' winds rotate counter-clockwise (clockwise) in the Northern (Southern) Hemisphere? The reason is that the earth's rotation sets up an apparent force (called the Coriolis force) that pulls the winds to the right in the Northern Hemisphere (and to the left in the Southern Hemisphere). So, when a low pressure starts to form over north of the equator, the surface winds will flow inward trying to fill in the low and will be deflected to the right and a counter-clockwise rotation will be initiated. The opposite (a deflection to the left and a clockwise rotation) will occur south of the equator. This Coriolis force is too tiny to effect rotation in, for example, water that is going down the drains of sinks and toilets.
    [Show full text]