Samuel Ato Andam-Akorful

• PhD
• Lecturer at Kwame Nkrumah University of Science and Technology

This study analyzes long-term patterns in precipitation, (P), evapotranspiration (ET), and meteorological and agricultural drought indices in the Upper East Region (UER) of Ghana from 1981 to 2017. The study further investigates the relationship between these hydrometeorological variables and yields of groundnut, maize, millet, rice, and sorghum fr...

This article presents an assessment of the impact of mining activities in the Emalahleni municipality, using GIS and RS technologies. The random forest algorithm was used to classify the land use and land cover in the Emalahleni municipality over a three-decade period (1990–2020). The classifications are settlement, water, mining area, vegetation,...

The Volta Basin in West Africa plays a crucial role in supporting the livelihoods of millions of people, and effective management of its water resources is essential for climate change adaptation. This study utilized remote sensing technology, specifically the Gravity Recovery and Climate Experiment (GRACE), to assess terrestrial water storage (TWS...

The purpose of the study is to compare mobility and access in Sub- Saharan Africa urban cities of Nigeria and Ghana by analysing trends and accident probabilities on the inland waterways to improve safety standards. Primary data from100 respondents through structured data and interview from boat and ferry operators were used. The responses were ran...

Noise pollution is one of Ghana’s environmental risks and it has become the norm in metropolitan areas to the point where residents in these locations experience noise nuisance and may be at risk of hearing loss. Most developed and developing countries have established traffic noise standards as a control mechanism to reduce traffic noise exposure...

The performance of four Near-Real-Time Satellite-Based Rainfall Estimates (NRT_SREs) was evaluated across the Volta basin from January 2019 to December 2020: Global Satellite Mapping of Precipitation (GSMaP_NRT), Integrated Multi-satellitE Retrievals for Global Precipitation Measurement-Early run (IMERG-E), Precipitation Estimation from Remotely Se...

Mobility and access to social, economic, and cultural opportunities are facilitated by the availability of practical location data. Practical location data are scarce in Ghana and most of Sub-Sahara Africa where cities are typically characterized by informal settlements and a lack of standard address system. The problem is compounded by limited use...

Higher institutions run various programs. These programs must be authorized, in other words accredited by a National Institution for accreditation to ensure quality and standards. This research paper aims to provide a convenient way of accreditation for the various programs in universities or institutions of higher learning. The College of Engineer...

Lymphatic filariasis (LF) is a public health menace, especially in developing countries. A periodic review of mass drug administration (MDA) performance is critical to monitoring elimination progress. However, investigating the spatial pattern of LF with respect to MDA intervention is yet to be documented. This is essential to appreciating the tran...

Mobility and access to social, economic, and cultural opportunities are facilitated by the availability of practical location data. Practical location data are scarce in Ghana and most of Sub-Sahara Africa where cities are typically characterized by informal settlements and a lack of standard address system. The problem is compounded by limited use...

Traffic noise is a major cause of noise pollution, and impacts of noise pollution on humans have been studied extensively. Previous studies have helped in the development of traffic noise prediction analysis using robust analytical and computational models, parameters connected with traffic, road characteristics, and environment. This study reviewe...

Reconstructing missing streamflow data can be challenging when additional data are not avail-able, and missing data imputation of real-world datasets to investigate how to ascertain the accuracy of imputation algorithms for these datasets are lacking. This study investigated the necessary complexity of missing data reconstruction schemes to obtain...

Vehicle routing is a critical factor in municipal solid waste (MSW) collection planning and operations. Poor routing can introduce inefficiencies and cause targeted levels of services or performance to be missed irrespective of the level of resource application. Trial and error approaches have been proven to be not the best in the planning and pred...

Background Lymphatic Filariasis (LF), a parasitic nematode infection, poses a huge economic burden to affected countries. LF endemicity is localized and its prevalence is spatially heterogeneous. In Ghana, there exists differences in LF prevalence and multiplicity of symptoms in the country’s northern and southern parts. Species distribution models...

Lymphatic Filariasis (LF), a parasitic nematode infection, often resulting in disability poses huge economic burden to affected countries. To meet eradication deadlines in line with the global Neglected Tropical Diseases elimination and health system strengthening goals, novel strategies are needed to complement existing approaches. LF endemicity i...

There has been an increasing concern about effects of global warming on rainfall. Negative impacts on rainfall affect the environment and socio-economic activities of nations, globally. Rainfall characteristics at the Upper East Region (UER) of Ghana in terms of temporal and spatial variability are investigated from 1981 to 2016 using rainfall data...

Vegetation variation offers significant information for environmental planning, management, sustainability and prompts caution of ecosystem degradation, particularly for the semiarid regions. Normalized difference vegetation index (NDVI) discloses the coverage growth situation, biomass and photosynthesis strength of vegetation and land-cover altera...

This paper analyzes errors in satellite gravity and GPS/trigonometric benchmarks (BMs) in relation to defining the Ghanaian Vertical Datum (GhVD). Results indicate that synthesized gravity introduce approximately 5 mm of error to corrected heights. However, large errors in BMs render them unsuitable for applications, including properly defining the...

Farm activities continued sand winning operations and the allocation of plots of land to prospective developers in Ghana pose a serious threat to the forest covers and lifespan of the Forest and game reserves. With all the positive add ups to the country from forests, Ghana has lost more than 33.7%(equivalent to 2,500,000 hectares) of its forest, s...

Using δ¹⁸O and δ²H in mean transit time (MTT) modeling can ensure the verifiability of results across catchments. The main objectives of this study were to (i) evaluate the δ¹⁸O- and δ²H-based behavioral transit time distributions and (ii) assess if δ¹⁸O and δ²H-based MTTs can lead to similar conclusions about catchment hydrologic functioning. A vo...

Remotely sensed terrestrial water storage changes (TWSC) from the past Gravity Recovery and Climate Experiment (GRACE) mission cover a relatively short period (≈15 years). This short span presents challenges for long-term studies (e.g., drought assessment) in data-poor regions like West Africa (WA). Thus, we developed a Nonlinear Autoregressive mod...

The science that underpins our knowledge and understanding of Isotope-Based Hydrograph Separation (IHS) has gained grounds, over the last few decades, in the identification of streamflow sources. However, challenges still exist in identifying appropriate tracers and the right combination of end-members for the IHS process. In a two-component IH...

Abstract This study was designed to examine the spatial and temporal variability of the relationship between Vegetation Cover and remotely-sensed Land Surface Temperature over Ghana from 2005 to 2015. MODIS Vegetation Index data (obtained at 0.05-degree spatial resolution) and MODIS Land Surface Temperature data (obtained at 0.05-degree spatial res...

The potential of terrestrial water storage (TWS) inverted from Gravity Recovery and Climate Experiment (GRACE) measurements to investigate water variations and their response to droughts over the Volta, Niger, and Senegal Basins of West Africa was investigated. An altimetry-imagery approach was proposed to deduce the contribution of Lake Volta to T...

After the frequent and long drought episodes of the 1980s, a plethora of case studies have shown that West Africa remains a hot spot in the continent where despite its numerous water resources, extreme rainfall variability remains a profound challenge to the availability of freshwater for agriculture and ecosystem services. In this paper, we assess...

Brazil has recently experienced one of its worst droughts in the last 80 years, with wide-ranging consequences for water supply restrictions, energy rationing, and agricultural losses. Northeast and Southeast Brazil, which share the São Francisco River basin (SFRB), have experienced serious precipitation reduction since 2011. We used terrestrial wa...

An Artificial Neural Network (ANN) was developed to estimate the NH3-N under the bacterial technology in Xuxi River, China. Eight water quality variables such as Dissolved Oxygen (DO), Chemical Oxygen Demand (COD), Total Nitrogen (TN), Total Phosphorus (TP), Suspended Sediment (SS), Temperature, Transparency, and Ammonia Nitrogen (NH3-N) were used...

As one of the most vulnerable regions to climate change, West Africa (WA) has since the 1970s suffered sustained reduction in rainfall amounts, leading to droughts and associated negative impacts on its water resources. Although rainfall rates have been reported to have experienced a degree of recovery, dry conditions persist. Additionally, the reg...

The estimation of large-scale evapotranspiration (ET) is complex, and typically relies on the outputs of land surface models (LSMs) or remote sensing observations. However, over some regions of Africa, inconsistencies exist between different estimations of ET fluxes, which should be investigated. In this study, we evaluate and combine different ET...

The impact of the El Niño-Southern Oscillation (ENSO) phenomenon within the Huangfuchuan watershed, one of the major first-order sub-basins in the middle region of the Yellow River, has not clearly been established. Consequently, the co-varying relationships between rainfall and El Niño/La Niña spanning the period 1954 to 2010 are investigated. Tre...

Quantifying the amount of precipitation and its uncertainty is a challenging task all over the world, particularly over the African continent, where rain gauge (RG) networks are poorly distributed. In recent decades, several satellite remote sensing (SRS)-based precipitation products have become available with reasonable spatial and temporal resolu...

With the first phase of COMPASS/BeiDou-2 (BDS) completed, the assessment of positioning performance and the characterization of its system are analyzed and presented. Pseudo-range and carrier phase measurements modulated on B1 and B2 have been collected in Shanghai, from 00: 00 to 24: 00 on 28 December, 2012. Compared with GPS, visibility and measu...

The insufficiency of distributed in situ hydrological measurements is a major challenge for hydrological studies in many regions of the world. Satellite missions such as the Gravity Recovery and Climate Experiment (GRACE) and the Tropical Rainfall Measurement Mission (TRMM) can be used to improve our understanding of water resources beyond surface...

The purpose of this paper was to validate the rainfall data of Climate Research Unit high resolution Time-Series version 3.1 (CRU TS 3.1) with meteorological ground-based Rain Gauge (RG) measurements and determine the possibility of its integration with ground-measured rainfall. The research primarily advocates on the need for complementing ground-...

The measurement of total basin discharge along coastal regions is necessary for understanding the hydrological and oceanographic issues related to the water and energy cycles. However, only the observed streamflow (gauge-based observation) is used to estimate the total fluxes from the river basin to the ocean, neglecting the portion of discharge th...

The Geoinformatics Engineer (GE), who uses mathematical theory and precise measurements for the collection and distribution of geospatial data, plays a significant role in the oil and gas industry. The paper reviews the role the GE woul d play in the recent oil and gas discovery in Ghana. This is because the GE is required in the planning and execu...

In this paper, Usability Engineering (UE) is used to explore geospatial data at the School of Earth Sciences and Engineering, Hohai University, China. In geo-spatial data presentation, exploration and analysis, knowledge is disseminated, accumulated or accentuated. For learning purpose, this knowledge needs to be evaluated. The increasing use of th...

GRACE satellite gravity data was used to estimate mass changes within the Volta River basin in West African for the period of January, 2005 to December, 2010. We also used the precipitation data from the Tropical Rainfall Measurement Mission (TRMM) to determine relative contributions source to the seasonal hydrological balance within the Volta Rive...

Optimal emergency response plan is necessary for the crowded spectators in a busy game environment. Emergency response teams at stadiums need to respond immediately and in a timely manner when there is a problem. A delay in response could lead to a fatality or even complex issues. However, adequate consideration, application of quality principles,...