Die mit dem globalen Klimawandel einhergehende Zunahme der mittleren Jahrestemperatur führt zu einem Anstieg des mittleren Meeresspiegels. Hierzu trägt auch das Schmelzwasser der kontinentalen Eismassen bei. Über die Bestimmung der kontinentalen Eismassenänderungen kann somit auf deren Beitrag zum globalen Meeresspiegelanstieg geschlossen werden. Eismassenänderungen spiegeln sich in Variationen des Gravitationsfeldes der Erde wieder. Diese Variationen werden durch die Satelliten- Schwerefeldmission GRACE monatlich bestimmt. Am Institut für Planetare Geodäsie wurden die Eismassenänderungen des Antarktischen und Grönländischen Eisschildes aus 61 GRACEMonatslösungen für den Zeitraum August 2002 bis Januar 2008 abgeleitet. Sie belaufen sich auf -109 ± 48 bzw. -193 ± 22 Gt/a, was einem äquivalenten Meeresspiegelanstieg von 0.31 bzw. 0.55 mm/a entspricht. / The mean annual temperature rise which goes hand in hand with global warming results in a mean sea level rise. Meltwater influx from continental ice masses is one component of this phenomenon. Hence, the determination of continental ice mass changes makes it possible to infer their contribution to the global mean sea level rise. Such mass variations induce changes in the Earth's gravity field, as observed on a monthly basis by the gravity field satellite mission GRACE. At the Institut für Planetare Geodäsie, mass changes across the ice sheets of Greenland and Antarctica have been derived from 61 GRACE monthly solutions for the period 08/2002 – 01/2008. These ice mass changes add up to -109 ± 48 and -193 ± 22 Gt/a, respectively. This equates to a sea level rise of 0.31 or 0.55 mm/a.

Thesis advisor: Noah P. Snyder / Though previous studies have shown saltmarsh adaptability to some degree of sea-level rise (SLR), sediment supply is critical to sustaining saltmarshes as SLR accelerates. Land-use activities, such as dams, often influence watershed sediment transport and delivery to the coast. Previous studies have suggested that, even in small watersheds, dams can significantly impact coastal sediment budgets. The Parker River watershed (PRW) in northeastern Massachusetts hosts 20 dams and several natural lakes, and drains into the Plum Island Sound Estuary (PIE). This research aims to evaluate the impact of dams and sediment transport in the PRW. Three approaches were used: theoretical modeling of sediment transport patterns using digital elevation models; spatial analysis of suspended sediment concentration (SSC) and remote sensing data; and empirical calculations of reservoir trap efficiency. Geomorphic modeling indicates that bankfull discharge can transport 20 μm grains (silt) as wash load throughout the PRW. Sediment deposition might happen at Crane Pond and in reservoirs, but removing dams would not change this pattern. Both SSC data and observations of satellite images during high-flow events indicate low supply and transport of sediment throughout the PRW. The estimates of sediment yield (Y) are low for the PRW. An empirical calculation indicates little-to-no trap efficiencies for all dams. Therefore, fluvial contribution to the sediment budget of the PIS estuary is limited and dam removals in the PRW are unlikely to change the rate of sediment delivery to the PIE. The proposed method of this study provides an additional scope to assess the ecological benefits of removing a dam and could be easily replicated for other locations for similar assessment. Future studies should assess sediment dynamics and management practices from a more thorough perspective incorporating the riverine, estuarine and shelf system. / Thesis (MS) — Boston College, 2020. / Submitted to: Boston College. Graduate School of Arts and Sciences. / Discipline: Earth and Environmental Sciences.

In order to encounter the rising sea level, the county government of Stockholm has proposed three options; 1) not to do anything 2) raise the water level in Mälaren, 3) build barriers in the archipelago. In my theses I focus on option three where I investige what the consequences might be of building barriers in the archipelago. Moreover, I design one of the barriers in order to explore the possibilites of such an intervention. / Stockholm hotas av havsvattenhöjningen och för att bemöta problemet har länsstyrelsen tagit fram tre förslag; 1) att inte göra någonting, 2) höja vattennivån i mälaren, 3) bygga barriärer i skärgården. I detta arbete utreds alternativ tre där jag tar reda på vad konsekvenserna skulle bli av ett byggande av barriärer i skärgården. Utöver stadsplaneringsskalan ritas en av barriärerna med fokus på hur en sådan intervention skulle kunna te sig.

World sea levels are rising because of increasing levels of greenhouse gases (GHGs) in the atmosphere. This report aims to describe and analyze how the small, low-lying and vulnerable country of Singapore is planning for sea level rise (SLR). The ministries, authorities, agencies, secretariats etc. that are working with SLR questions are identified and the most important environmental documents with or without SLR are also studied. University and government researchers as well as other government personnel are contacted and asked questions in relation to SLR. The interview process was difficult because some people have signed agreements with the government that restrict them from participating in any activities. Planning for SLR is discussed from different points of view and numbers of possible sea levels are also discussed. Mostly they follow IPCC projections and they often refer to the assessment report 4 (AR4) where SLR is estimated to 0.18-0.59 m by 2100. They rarely refer to IPCC’s assessment report 5 (AR5), since the research for Singapore’s environmental documents was conducted before the release of AR5. The IPCC levels are mean sea levels and it is argued by one governmental researcher who is part of the study that these levels are not sufficient for planning purposes as it is the sea level extremes that are important to plan for. Seasonal wind, tides, waves and other factors all interact to affect sea level extremes at any particular location. Singapore is located in a particularly complex region and is therefore a complex country to plan for. The report concludes that Singapore needs a better strategy to share information, and authorities need to show their results in relation to SLR, and pass on their knowledge. This will help the whole world to reduce their impact and together, make it possible to create a sustainable world, minimizing climate change effects on Earth.

This thesis addresses local adaptation to climate change-induced sea level rise, taking an ethical perspective and focusing at the role of planning and the planner. The research, which has been conducted within a transdisciplinary research project, takes a bottom-up approach to applied ethics, and relies to a great extent on empirical data. In doing this, it contributes to the growing field of ethics of climate change adaptation, with results that can be of interest to both ethicists and planners. The thesis consists of an introductory chapter and three articles.  Article 1: Departing from an interview study with planners working with adaptation to sea level rise in Sweden, a typology of ethical issues is presented. It is shown that planners have to deal with input-oriented, process-oriented, and outcome-oriented ethical issues, and that knowledge of these can contribute to ethical adaptation policy.  Article 2: A method building on Value Sensitive Design (VSD) and scenario planning is developed and applied to address the challenge of integrating ethics when planning for uncertainty over long time- horizons, in the context of adaptation to sea level rise. The method consists of three steps for scenario development and three steps for value investigations. The application resulted in insights on aspects important for an ethical long-term adaptation to sea-level rise.  Article 3: Responsibility of adaptation to sea level rise is often assigned to local planners. But what does it mean to be responsible? Departing from the idea of professional virtues, three codes of ethics for planners are analysed to extract aspirational characteristics for planners. The identified virtues are put in relation to central challenges of adaptation, where five virtues stand out as central to the understanding of what it means to be responsible in adaptation to sea level rise. / Den har avhandlingen behandlar etiska aspekter i anpassning till stigan­de havsnivåer. Som en följd av klimatforändringarna stiger havsnivåer­na, vilket utsätter kustnära samhällen for stora risker. För att minimera dessa risker kan vi antingen minska våra utslapp och begransa klimatförändringarna (detta kallas på engelska for mitigation), eller så kan vi anpassa oss till förandringarna vi star inför. Anpassning till stigande hav­snivåer kan bland annat ta form av hårda skydd som murar mot havet, ekosystembaserade skydd som mangroveskogar, eller genom att flytta samhällen och människor från riskzoner, en sa kallad planerad reträtt. Det som är karakteristiskt för anpassning till stigande havsnivåer är att det i stor utsträckning handlar om ingrepp i den byggda miljön, vilket gör att anpassning till stigande havsnivåer på många sätt kan betraktas som en sorts fysisk planering. I de flesta samhällen kommer anpassning innebära en kombina­tion av insatser, och när anpassningsstrategier formuleras kommer det behövas tas hänsyn till mål- och värdekonflikter. I och med detta kan an­passning till klimatförandringarna och till stigande havsnivåer uppfattas som etisk till sin natur. En etisk analys kan bidra med att systematisera rätt och fel och bistå med verktyg for att fatta välmotiverade beslut. Trots detta har förhallandevis lite forskning inriktat sig på just etisk an­passning till stigande havsnivåer. Denna avhandling bidrar med etiska analyser av anpassning till stigande havsnivåer, med särskild inrikt­ning på lokal anpassning och planerarens roll i anpassningsprocessen. Forskningen som presenteras har genomförts inom det tvärvetenskapli­ga forskningsprojektet Sea-rims (Sustainable and ethical adaptation to rising mean sea levels) som drivs av filosofiska avdelningen på KTH till­sammans med Statens Geotekniska Institut (SGI). Projektgruppen har tillsammans med ett antal projektpartners från sydsvenska kommuner och länsstyrelser, samt en referensgrupp med representanter från myn­digheter som arbetar med anpassning till stigande havsnivåer, utforskat etiska dimensioner av de problem som projektmedlemmarna står infor. Avhandlingen kan därmed ses som ett exempel på tillampad etik, med ett tydligt nedifrån-perspektiv på de etiska frågeställningarna. / <p>QC 210519</p>

Stigande havsnivåer är något som idag påverkar kustområden världen över, vilket har lett till att fokus behövt riktas mot att klimatanpassa den fysiska planeringen. Syftet med uppsatsarbetet är att genom en fallstudie undersöka kommunerna Karlskrona och Ystad arbete med klimatanpassning för havsnivåhöjningar. Vidare är syftet att studera vilken roll digitala planeringsverktyg har. Arbetet ska besvara två frågeställningar där den första handlar om hur respektive kommun arbetar med klimatanpassning för stigande havsnivåer och den andra behandlar digitala planeringsverktygs roll i det arbetet.  Studien bygger på kvalitativa metoder och insamlingen av empiri genomfördes med kvalitativa intervjuer samt konventionella innehållsanalyser. Det teoretiska ramverket består av begreppen: “resiliens”, “anpassningskapacitet”, “digitalisering inom fysisk planering” och “resurskoordinering”. Resultatet visar främst att Karlskrona kommun arbetar med långsiktiga lösningar och samverkan samt att Ystad kommun arbetar proaktivt och utifrån strategier och handlingsplaner. Det framkom även att digitala planeringsverktyg har en mer kompletterande roll i kommunernas arbete. / Sea level rise affects coastal areas around the world, which has made urban planning move towards climate adaptation. The purpose of this paper is to understand how the municipalities of Karlskrona and Ystad work with climate adaptation for sea level rise and what part digital planning tools have. The paper has two main issues which aims to understand how climate adaptation for rising seas is implemented in the municipalities and the role of digital planning tools.  The study is based on qualitative methods and the data was collected with qualitative interviews and conventional content analysis. The theoretical framework includes: “resilience”, “adaptation capacity”, “digitalization in urban planning” and “resource coordination”. The results shows that the municipality of Karlskrona works with long term solutions and cooperation, and that the municipality of Ystad works proactively with strategies. Lastly it became clear that digital planning tools have a complementary part in the municipalities work.

The Louisiana coastal ecosystem is experiencing increasing threats from human flood control construction, sea-level rise (SLR), and subsidence. Louisiana lost about 4,833 km2 of coastal wetlands from 1932 to 2016, and concern exists whether remaining wetlands will persist while facing the highest rate of relative sea-level rise (RSLR) in the world. Restoration aimed at rehabilitating the ongoing and future disturbances is currently underway through the implementation of the Coastal Wetlands Planning Protection and Restoration Act of 1990 (CWPPRA). To effectively monitor the progress of projects in CWPPRA, the Coastwide Reference Monitoring System (CRMS) was established in 2006. To date, more than a decade of valuable coastal, environmental, and ground elevation data have been collected and archived. This dataset offers a unique opportunity to evaluate the wetland ground elevation dynamics by linking the Rod Surface Elevation Table (RSET) measurements with environmental variables like water salinity and biophysical variables like canopy coverage. This dissertation research examined the effects of the environmental and biophysical variables on wetland terrain elevation by developing innovative machine learning based models to quantify the contribution of each factor using the CRMS collected dataset. Three modern machine learning algorithms, including Random Forest (RF), Support Vector Machine (SVM), and Artificial Neural Network (ANN), were assessed and cross-compared with the commonly used Multiple Linear Regression (MLR). The results showed that RF had the best performance in modeling ground elevation with Root Mean Square Error (RMSE) of 10.8 cm and coefficient of coefficient (r) = 0.74. The top four factors contributing to ground elevation are the distance from monitoring station to closest water source, water salinity, water elevation, and dominant vegetation height. / Includes bibliography. / Dissertation (Ph.D.)--Florida Atlantic University, 2020. / FAU Electronic Theses and Dissertations Collection

Havsnivån stiger över hela världen på grund av termisk expansion och smältande glaciärer orsakade av den globala uppvärmningen. Maldiverna och Kiribati är några av de lägst liggande atolländerna i världen vilket gör dem särskilt utsatta för den förväntade havsnivåhöjningen. Denna uppsats undersöker vilka skillnader som finns i Maldivernas och Kiribatis klimatanpassningsstrategier vad gäller ekologisk, social och ekonomisk hållbarhet genom en kvalitativ innehållsanalys av deras respektive National Adaptation Programme of Action- dokument (NAPA). NAPA identifierar och beskriver de mest angelägna anpassningsprojekten i varje land. Genom att identifiera huruvida anpassningsprojekten är hållbara kan mer effektiva strategier implementeras i framtiden. Resultatet visar att flera anpassningsprojekt har misslyckats med att integrera alla tre aspekter av hållbar utveckling, vilket kan ha bidragit till ett ohållbart genomförande av klimatanpassningsåtgärder, medan vissa projekt även visar att det är möjligt att framgångsrikt integrera alla aspekter av hållbar utveckling. / Sea levels are rising around the globe due to thermal expansion and melting glaciers caused by global warming. The Maldives and Kiribati are some of the lowest lying atoll countries in the world, which makes them particularly vulnerable to the projected sea level rise. This thesis investigates what differences exist in the adaptation strategies for the Maldives and Kiribati, in terms of ecological, social and economic sustainability, through a qualitative content analysis of their respective National Adaptation Programme of Action (NAPA) documents. The NAPAs identify and describe the most urgent adaptation projects in each country. By identifying whether the adaptation projects are sustainable, more effective strategies can be implemented in the future. The results show that several adaptation projects fail to incorporate all three aspects of sustainable development, which may have contributed to unsustainable implementation of climate change adaptation measures, whereas some projects also show that it is possible to successfully integrate all aspects of sustainable development.

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As a coastal city, the history and development of Helsinki are very much linked to its harbor. In particular, as the closest harbor to the city center, the South Port "Makasiiniranta" has largely served as the "gateway to the sea" of Helsinki. As the closest harbor to the city center, Makasiiniranta, in particular, has largely served as the "maritime gateway" to Helsinki, participating to a great extent in the daily life of Helsinki's residents and making a strong first impression on visitors. However, the function and form of the South Harbour have historically changed along with the values and needs of visitors, both residents and tourists, and this time is no exception.  The design of the harbor is based on this idea, which is divided into three levels: 1. the creation of a flood protection zone with different strategies based on the topography and different characteristics of the city; 2. the refinement and streamlining of the coastal flood protection architecture and landscape, which can exist in different scenarios with a variable form. To build climate-adapted spaces in coastal areas with their flexible forms to maximize the range of activities and functions of people at different water heights. 3. To embed functions in adaptive flood protection spaces to meet the needs of multiple groups.