Kwasi Appeaning Addo

Kwasi Appeaning Addo
University of Ghana | Legon · Institute for Environment and Sanitation Studies

PhD, MPhil, BSc

About

118
Publications
63,722
Reads
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1,797
Citations
Citations since 2017
58 Research Items
1468 Citations
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Introduction
currently involved in monitoring coastal erosion along Ghana coast using drones and video systems; assessing the impact of climate change on coastal communities and modelling the dynamics of the Volta delta.
Additional affiliations
January 2020 - April 2022
University of Ghana
Position
  • Professor
Description
  • Coastal geomorphology, Coastal hydrology and Coastal processes.
August 2018 - present
University of Ghana
Position
  • Managing Director
Description
  • Coastal management and Climate change impacts
September 2004 - April 2008
Newcastle University
Position
  • PhD Student
Description
  • Shoreline modelling and Climate change
Education
September 2004 - April 2008
Newcastle University
Field of study
  • shoreline change modelling unde climate change scenarios

Publications

Publications (118)
Article
Ocean wave forecasting for West Africa has mostly relied on global parameterization schemes and data outputs. Investigating non-linear ocean wave-wave interaction source terms (Snl) for the region, that forms part of the wave model parameterization schemes, is a contribution of this study towards developing a regional wave modelling scheme for West...
Article
Full-text available
The West African coastal population and ecosystems are increasingly exposed to a multitude of hazards. These are likely to be exacerbated by global climate change and direct impacts from local human activities. Our ability to understand coastal changes has been limited by an incomplete understanding of the processes and the difficulty of obtaining...
Preprint
Sargassum is a free-floating brown macroalgae that has many benefits in the marine environment however has been reported to impact diverse sectors of human livelihoods. Sargassum influx has been experienced in Ghana since 2009. The consequences of this influx have been significantly felt by coastal communities who depend on the fisheries for their...
Article
Marine pollution is attributable to anthropogenic introductions of contaminants above their natural background levels and being dispersed by ocean forcing. Assemblages of vessels within offshore platforms and seaport terminals could also be potential sources for marine water contamination. As such, nearshore perimeters of the Tema Port were assesse...
Article
Theoretical emphasis on combining geophysical and socioeconomic characteristics in assessing vulnerability is growing but with little empirical support. Similarly, there is increasing consideration of cumulative vulnerability to multiple stressors, yet empirical studies are scant. This study seeks to assess the geophysical and socioeconomic determi...
Article
Full-text available
Marine business and resources play a major role in the economics and way of life in coastal West African countries. Such countries see great profitability from their marine resources while also facing challenges that come with a bordering sea. Despite this fact, there has been limited research into the optimal way for West African Coastal States to...
Article
Full-text available
Ocean wind fields form a significant input to ocean wave models. This study evaluates the accuracy of two major reanalysis wind fields: NCEP-NCAR reanalysis-II (NNR-II) and ECMWF ERA5 wind datasets in the marine domain of West Africa. The objective is to identify the reanalysis data that best represents the wind regimes of the sub-region for use in...
Article
Full-text available
Input and dissipation source terms contribute significantly to the projection of ocean wave properties in numerical wave models. They form an integral part of the wave energy balance equation. This study investigates the appropriate input-dissipation source terms (Sin-ds) that best estimate the significant wave heights and wave directions in the en...
Article
Full-text available
Since 2011, unprecedented pelagic sargassum seaweed blooms have occurred across the tropical North Atlantic, with severe socioeconomic impacts for coastal populations. To investigate the role of physical drivers in post-2010 sargassum blooms in the Central West Atlantic (CWA), conditions are examined across the wider tropical North Atlantic, using...
Article
In September 2018, a group of 14 Heads of States and Governments from all regions of the world came together to create the High Level Panel (HLP) for a Sustainable Ocean Economy (SOE). The HLP is co-chaired by the Prime Minister of Norway and the President of Palau. Simply put, the HLP seeks to ensure a SOE worldwide. In February 2021, the #Virtual...
Article
Full-text available
Coastal areas in developing countries are very vulnerable to the effects of sea-level rise. Adaptation to sea-level rise through protection measures can include both engineering and nature-based solutions. However, comparative economic analyses across both types of solutions are sparse. Moreover, stated preference studies in developing countries th...
Article
Full-text available
The holopelagic macroalgae sargassum has proliferated across the tropical Atlantic since 2011, of consequence for coastal populations from West Africa to the Caribbean with limited early warning of major beaching events. As part of an interdisciplinary project, ‘Teleconnected SARgassum risks across the Atlantic: building capacity for TRansformation...
Article
Full-text available
The ability of a coastal settlement to adapt to climate change is largely dependent upon access to a range of resources, which many coastal towns and small cities lack. Coastal small towns of less than 10,000 are therefore at a significant disadvantage compared to larger settlements when it comes to adaptation. One way to begin to overcome this dis...
Article
Erosion is a major challenge facing coastal regions globally and it is projected to increase on regional to global scale as sea levels continue to rise. Deltas, which are important ecosystems, are particularly vulnerable due to their low-lying nature, subsidence, reduction in sediment supply, population increase and exposure to increasing frequency...
Article
Coastal erosion has become an issue globally. As the sea level continues to rise due to global warming, projections are that erosion would increase. To address the issue sustainably, relevant scientific information such as sediment transport and shoreline dynamics is required at local scales. Over the years, erosion at the eastern coast of Ghana ha...
Chapter
Recent advancements in remote sensing platforms have resulted in the development of small unmanned aerial systems (UAVs), commonly referred to as drones. UAVs have emerged as alternatives that are more flexible in aerial photography due to the relatively low cost of operation, support for missions that are more frequent, appreciable areal coverage,...
Technical Report
Full-text available
This policy brief is the result of a collaboration between the Institute for Environmental Studies at Vrije Universiteit Amsterdam (IVM-VU), the Institute for Environment and Sanitation Studies at University of Ghana (IESS-UG), The Development Institute (TDI) and IUCN-NL. The project targeted to value ecosystem services in both urban and rural area...
Technical Report
Full-text available
This policy brief is the result of a collaboration between the Institute for Environmental Studies at Vrije Universiteit Amsterdam (IVM-VU), the Institute for Environment and Sanitation Studies at University of Ghana (IESS-UG), The Development Institute (TDI) and IUCN-NL. The project targeted to value ecosystem services in both urban and rural area...
Article
Full-text available
Highlights ƒ Resilient coastal ecosystems are central to the realisation of a sustainable, inclusive, prosperous, and equitable ocean economy, as coastal areas are home to more than 40 percent of the world’s population and host most of the transport, commercial, residential and national defence infrastructure of more than 200 nations and territorie...
Article
Full-text available
Estuarine shorelines similar to marine coastlines are highly dynamic and may increase disaster risk in vulnerable communities. The situation is expected to worsen with climate change impacts and increasing anthropogenic activities such as upstream water management. This study assessed shoreline changing trends along the Volta river estuary in Ghana...
Article
Full-text available
Video camera systems have been used over nearly three decades to monitor coastal dynamics. They facilitate a high-frequency analysis of spatiotemporal shoreline mobility. Video camera usage to measure beach intertidal profile evolution has not been standardized globally and the capacity to obtain accurate results requires authentication using vario...
Chapter
Full-text available
Through the Anthropocene, growing populations and economic assets have intensified risk. Within deltas, the concurrence of high human populations and economic assets with climatic events, physical and biophysical processes, and natural hazards generate ‘hotspots’ of societal risk. Identification of these hotspots requires combining hazards, exposur...
Chapter
Full-text available
The world’s deltas are facing a sustainability crisis, with many at high risk of being ‘drowned’ as a result of relative sea-level rise. The only factor that can potentially offset relative sea-level rise is the deposition of fluvial sediment on the surface of deltas. As a result, an understanding of trends in fluvial sediment supply to deltas is c...
Chapter
Full-text available
The Volta Delta has fragile biophysical features affected by damming the Volta River and sand mining among other anthropogenic activities. The disrupted ecosystem adversely impacts livelihoods although efforts have been employed to reduce these impacts including both infrastructure and policies. This chapter describes the biophysical and socio-ecol...
Article
Full-text available
Long-term sustainable port development requires accounting for the intrinsic values of ecosystems. However, in practice, ecosystem considerations often only enter the planning and design process of ports when required by an Environmental Impact Assessment. At this late stage, most of the design is already fixed and opportunities to minimize and res...
Article
Reduced sediment in delta beach systems affects delta coast topography and influence delta beach evolution. It opens the deltaic environment up to severe ocean waves and tide attack, which threatens vulnerable coastal communities and increases the risk of the inhabitants. Changes in the beach sediment systems vary from few meters to several kilomet...
Article
Full-text available
This paper provides insights into the current socioeconomic and biophysical state of the Volta Delta, Ghana. We employed non-survey methods, notably the Flegg Location Quotient (FLQ) method of regionalization and construction of tables to develop environmentally extended input-output (IO) model for comparing the economic characteristics of the Volt...
Article
Full-text available
Fluvial sediment discharge to coastal area contributes to the stability of the coast. Deposition of fluvial sediment discharge is an important source of beach nourishment, nutrient for aquatic ecology and habitats. However, human development and interventions on rivers in the form of dams and flood alleviation schemes tend to reduce fluvial sedimen...
Conference Paper
Full-text available
Coastal zones are considered as one of the most productive zones of the world with diverse ecosystems, providing humankind with immense ecological services. However, coastal ecosystems continue to be under threat as a result of population growth and increasing rate of economic development. To address this issue, there is the need to reshape human a...
Article
Full-text available
Background Monitoring coastal erosion and flooding in deltaic environment is a major challenge. The uncertainties associated with land based methods and remote sensing approaches affect the levels of accuracy, reliability and usability of the output maps generated. This study monitored flooding and erosion activities in a flood prone fishing commun...
Article
As the scientific consensus concerning global climate change has increased in recent decades, research on potential impacts of climate change on water resources has been given high importance. However in Sub-Saharan Africa, few studies have fully evaluated the potential implications of climate change to their water resource systems. The Volta River...
Article
This study assessed wave dynamics and sediment transport along the coast of Accra in Ghana and compared the results with coastal erosion trend. Wave data from NOAA global wave model and measured buoy wave data were analysed as well as the potential sediment transport using the CERC's equation. The estimated mean significant wave height was 1.40 m a...
Article
Full-text available
Global climate change in response to buildup of human-induced greenhouse gases in the atmosphere has already resulted in several visible consequences such as an increase in ocean heat content and melting of glaciers. The relative effect of sea level and wave variability on shoreline changes along the coastline of James Town, Ghana (Gulf of Guinea),...
Article
Full-text available
Even if climate change mitigation is successful, sea levels will keep rising. With subsidence, relative sea-level rise represents a long-term threat to low-lying deltas. A large part of coastal Bangladesh was analysed using the Delta Dynamic Integrated Emulator Model to determine changes in flood depth, area and population affected given sea-level...
Article
Full-text available
Shoreline change is an issue of concern to coastal stake holders because the coastal zone is home to over 60% of the world’s population. In Ghana, for instance, shoreline change has been associated with loss of economic lands and properties. Previous researches have showed that the coastline is eroding at variable rates in spatial times. Studies ha...
Article
Against the background of potentially substantial sea-level rise, one important question is to what extent are coastal societies able to adapt? This question is often answered in the negative by referring to sinking islands and submerged megacities. Although these risks are real, the picture is incomplete because it lacks consideration of adaptatio...
Article
Full-text available
This paper aims at assessing the ecological health status of aquatic ecosystems in the coastal area of Ada in Ghana. Healthy aquatic ecosystems are characterized by high species diversity, good water and habitat quality among others. An ecological assessment was conducted to describe the landuse pattern, water quality and habitat quality of critica...
Article
Full-text available
Delta regions are dynamic and rich environments with diverse economic activities and are often densely populated.Deltas are being shaped by multiple drivers, including changes in sediment delivery to the coastal zone due to catchment changes, especially construction of dams on major rivers, intensified agriculture and/or aquaculture, mining, urbani...
Article
Full-text available
The present work investigates cross-shore shoreline migration as well as its alongshore variability (with deformation) on timescales of days to years using 6 years of time-averaged video images. The variability of the shoreline is estimated through empirical statistical methods with comprehensive reference to three scales of variability. At the mes...
Article
Full-text available
This study investigates the impact of individual storms and storm clusters on shoreline recovery for the meso-to macrotidal, barred Biscarrosse beach in SW France, using 6 years of daily video observations. While the study area experienced 60 storms during the 6-year study period, only 36 storms were analysed due to gaps in the video data. Based on...
Article
Coastal erosion along the Accra coast has become a chronic phenomenon that threatens both life and property. The issue has assumed a centre stage of national debate in recent times because of its impact on the coastal communities. Lack of reliable geospatial data hinders effective scientific investigations into the changing trends in the shoreline...
Article
Coastal erosion along the Accra coast has become a chronic phenomenon that threatens both life and property. The issue has assumed a centre stage of national debate in recent times because of its impact on the coastal communities. Lack of reliable geospatial data hinders effective scientific investigations into the changing trends in the shoreline...
Conference Paper
Full-text available
Shoreline change has increased coastal erosion along the West African coast, which has destroyed the coastal environment and threatens coastal investments. Coastal erosion is a critical issue and has become the centre of debate in the sub-region in recent times. The coastal areas in West Africa are home to about 31% of the region’s population and g...
Article
Full-text available
Coastal erosion along the Accra coast has become a chronic phenomenon that threatens both life and property. The issue has assumed a center stage of national debate in recent times due to its impact on the coastal communities. Lack of reliable geospatial data hinders effective scientific investigations into the changing trends in the shoreline posi...
Article
Full-text available
The usefulness of any geographic data depends on its fitness for a particular purpose. The critical measure of that fitness is referred to as data quality. Data quality may be expressed in terms of several indicators such as attributes, temporal or positional accuracies. In this research, positional accuracy assessment was carried out on two datase...
Article
Full-text available
The usefulness of any geographic data depends on its fitness for a particular purpose. The critical measure of that fitness is referred to as data quality. Data quality may be expressed in terms of several indicators such as attributes, temporal or positional accuracies. In this research, positional accuracy assessment was carried out on two datase...
Conference Paper
Full-text available
The morphology of sandy beaches is highly dynamic. They are influenced by the geology of the coastal area and external hydrodynamic forcing. On long timescales (years to decades), it is more efficient and convenient to monitor beach evolution through remote sensing technics rather than through direct field measurements. Erosion is a major problem a...
Poster
Full-text available
This study aims at economically modelling the impact of climate change on fisheries as input into IO table for prediction under different climate scenarios for 2030, 2060 and 2100 (WP4).
Article
Full-text available
The morphology of sandy beaches is highly dynamic. They are influenced by the geology of the coastal area and external hydrodynamic forcing. On long timescales (years to decades), it is more efficient and convenient to monitor beach evolution through remote sensing technics rather than through direct field measurements. Erosion is a major problem a...
Article
Sea level rise, increased erosion and flooding threaten vulnerable coastal communities globally. Monitoring the changes in the coastal zone enables the risk levels to be detected and quantified. Such information facilitates developing sustainable policies to effectively manage hazards in the coastal zone. This study used available geospatial data t...
Article
Full-text available
Shorelines fronting deltas evolve in their quest to achieve equilibrium state. Such activities have encountered the increasing human development in deltaic regions and resulted in the destruction of the environment and resources. This paper discusses the shoreline evolution trends of the Volta Delta in Ghana. The shoreline was divided into four sec...
Chapter
Coastal erosion is a critical issue along Ghana coast and has become the centre of national debate in recent times. Although erosion is largely a natural process, human activities have exacerbated their impact within the Ghana coastal zone. Such activities directly impact the coast and indirectly influence the coastal processes by reducing the capa...