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Investigating Effects of Environmental Treatments on Transpiration

Yin, Ying (author)

Transpiration is a crucial flux in greenhouses that directly affects plant growth. However, there are currently no direct measurements available. Sap flow is the most widely used method for quantifying transpiration, and calibration can enhance the accuracy of these estimates. Despite the existence of numerous recommendations for applying sap...

master thesis 2024

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Simulation of Greenhouse Tomato Crop Transpiration Using Two Theoretical Models

Yin, Ying (author)

Water consumption reduction in greenhouse cultivation is a key objective for growers to optimize resource usage. Accurate estimation of transpiration, enabling growers to adapt water inputs to exact plant requirements, is vital for efficient water management. Various models have been developed to estimate transpiration. The Penman-Monteith and...

student report 2023

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Towards Universality in the Near-Surface Temperature Profile

Verouden, Iris (author)

Weather and climate models require knowledge about the surface temperature and surface heat flux to make predictions for climatology, farming, wind power prediction, etc. Most current models make use of Monin-Obukhov Similarity Theory (MOST). This theory expresses multiple turbulent fluxes in terms of their mean gradients with height. MOST...

master thesis 2023

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Rainwater harvesting for smallholder farmers in Northern Ghana

Wiersma, Guus (author)

In this study, suitable rainwater harvesting techniques are investigated for smallholder farmers in northern Ghana, in order to reduce the impact of dry spells during the growing season. Dry spells and water shortage during the growing season have a negative impact on food production in northern Ghana, where 95% of the farms are rainfed. A...

master thesis 2023

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The role of water vapor observations in satellite-based rainfall information highlighted by a Deep Learning approach

Curzi, Fabio (author)

Rain-fed agriculture is the main source of food in Ghana therefore improving quantitative rainfall estimates is essential for local farmers to predict crop growth using vegetation models. Rainfall dynamics in the tropics is an ongoing topic of research due to their complexity and sub-grid precipitation variability. At the same time, tropical...

master thesis 2022

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An analysis of four different models for quantifying tomato transpiration in a soilless greenhouse

Harms, Koen (author)

Scientific literature points to several models used to calculate the transpiration of vegetable crops inside a greenhouse but the results are hard to compare since different experiment setups were used. This study aimed to analyse the accuracy of four different transpiration models, Penman-Monteith, Stanghellini, Priestley-Taylor, and Takakura...

master thesis 2022

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Modelling pavement evaporative cooling to mitigate heat wave

Lin, Steven (author)

As the intensity and frequency of urban heat wave increases in Europe, evaporative cooling from watering pavements has been considered as a promising strategy to regulate urban temperature. The aim of this research is to include evaporative cooling modelling and enhance the surface temperature model SURF-TEMP, which is in development at the...

student report 2022

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Soccer Fields as Rainfall Detectors using Machine Learning: The case of Ghana

Touloumidis, Dimos (author)

Agriculture is an important source of income for many countries in the Global South, where it may account for as much as 25% of GDP. Precipitation is crucial for agriculture in countries like Ghana, where ~95% of farming is rainfed. Accurate rainfall observations are limited in Ghana. The sparse rain gauge network and the lack of weather radars...

master thesis 2021

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Delft Meet Regen: Onderzoek naar de dagelijkse neerslagspreiding in Delft op basis van de neerslagdata van Delft Meet Regen

van Beek, Rafaël (author)

In dit rapport zal er onderzocht worden wat de dagelijkse ruimtelijke spreiding van regen in Delft is op basis van de neerslagdata van het Delft Meet Regen project. In totaal hebben er 90 vrijwilligers meegedaan aan dit project en zijn er dus ook 90 meetpunten. De neerslagdata die gebruikt is voor dit onderzoek is de neerslagdata in de periode...

bachelor thesis 2021

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Delft Meet Regen: Vergelijking van de regenmeters van Delft Meet Regen met andere regenmeters

Chen, Karen (author)

In het project Delft Meet Regen zijn er ongeveer 90 inwoners in Delft die een eigen handmatige regenmeter hebben gekregen en elke ochtend het aantal millimeters regen meten dat gedurende de ongeveer 24 uur daaraan voorafgaand is gevallen. De data van deze regenmeters gedurende een periode van ongeveer 6 weken zijn vergeleken met die van het...

bachelor thesis 2021

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Applying deep learning vs machine learning models to reproduce dry spells at point scale from satellite information in a data-scarce region: the case of northern Ghana

Mavritsakis, Panagiotis (author)

Large parts of the world rely on rainfed agriculture for their food security. In Africa, 90% of the agricultural yields rely only on precipitation for irrigation purposes and approximately 80% of the population’s livelihood is highly dependent on its food production. Parts of Ghana are prone to droughts and flood events due to increasing...

master thesis 2021

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Early Warning model for Thunderstorms around Lake Victoria

Magura, bart (author)

This report describes the development of an early warning model for thunderstorm occurrence around Lake Victoria. It is the first model to use the TAHMO lightning sensor data to predict thunderstorms. This study hopes to contribute to the TWIGA focus area of increasing disaster resilience through forecasting and early warnings and could be used...

master thesis 2020

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Understanding the relationship between extreme rainfall scaling and dew point temperature

Teruel Cano, David (author)

Due to global warming, temperatures are expected to rise and, with it, the increase in moisture holding capacity of the atmosphere. Changes in precipitation extremes with temperature are governed by the Clausius-Clapeyron relationship (CC), which states that precipitation increases 7% per degree of warming. While global models and observations...

master thesis 2020

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Quantifying flood damage: A case-study in Kumasi, Ghana

Wiersma, Guus (author)

In this research, the flood damage caused by heavy rain and plastic blockage in the neighbourhood of Atonsu, Kumasi is quantified. Rapid urbanisation and poor waste management result in floods with an increasing impact in Kumasi, the fastest growing city of Ghana. This rapid growth of the city results in uncontrolled urbanisation of the...

bachelor thesis 2020

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Assessing the impact of plastic waste accumulation on flood events with citizen observations: A case study in Kumasi, Ghana

Tjia, Jacintha (author)

This research assesses the impact of plastic waste accumulation on flood events with citizen observations in Kumasi, Ghana. In Kumasi, the fastest growing city in Ghana, flooding events have become more intense due to rapid urbanisation and land use intensification. Additionally, rapid population growth, urbanisation and lack of organised waste...

master thesis 2020

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Outfall development to provide a good recreational water environment near a polluted river: Panama City, Rio Matasnillo

Schilder, Simon (author)

This report describes the development of an outfall structure in Panama City. At this location a Matasnillo river enters the bay along the Cinta Costera. Since this river is polluted it causes a bad water environment and smell at the river mouth area such that it is unable for recreation. Boskalis wants to improve the area in co-operation with...

master thesis 2020

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The influence of land subsidence on pluvial flooding in Rotterdam: Supplementing conducted stress test pluvial flooding with land subsidence assessment

Vleugels, Jef (author)

In the Netherlands, the Delta Programme aspires to adjust spatial planning climate-proof and water-resilient, in order to be prepared for extreme weather in 2050. To achieve this ambition, municipalities, provinces, regional water authorities and central governments conduct stress tests to map out the vulnerabilities in their areas of authority...

master thesis 2019

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Adaptive planning of stormwater management measures to mitigate pluvial flooding under climatic and socio-economic uncertainties

ZHANG, Wenxing (author)

The undertaken thesis work conducts a research study based on the study area — Laakhaven, The Hague, to develop an implementation example of the Adaptation Pathway approach, in order to support long-term adaptive stormwater management planning on urban adaptation measures to mitigate pluvial flooding under the climatic and socio-economic...

master thesis 2019

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The Potential of Citizen Observatories for Improving Spatial Measurements of Rainfall in Cities

Schoester, Jeroen (author)

Urban pluvial flooding occurs when the run-off converted rainfall exceeds the capacity of the sewer or stormwater system (Houston et al., 2011). This can result in damage to ecology, infrastructure, disruption to human activities, injuries and in the worst-case scenario, loss of life (Biniyam et al., 2017). With the expected increase in the...

master thesis 2019

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A study of the variability of lag time as measure of hydrological response in urban catchments: Charlotte metropolitan area case

Ramirez Infante, David (author)

The Inter-Amount Times (IAT) adaptive sampling technique has been used for the analysis of hydrological response in urban areas. The analysis of hydrological response often requires the correct use and interpretation of temporal parameters such as lag time adapted to complexities and requirements of urban environments.<br/>In this thesis, the...

master thesis 2018