Improving water shortages through DF trap : case study Nigeria

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dc.contributor Helsingin yliopisto, Maatalous-metsätieteellinen tiedekunta, Maataloustieteiden laitos fi
dc.contributor University of Helsinki, Faculty of Agriculture and Forestry, Department of Agricultural Sciences en
dc.contributor Helsingfors universitet, Agrikultur- och forstvetenskapliga fakulteten, Institutionen för lantsbruksvetenskaper sv
dc.contributor.author Sotunde, Sobowale Adedapo
dc.date.issued 2016
dc.identifier.uri URN:NBN:fi:hulib-201605031566
dc.identifier.uri http://hdl.handle.net/10138/161667
dc.description.abstract In meeting the crop water needs in the arid and semi-arid regions, alternative source of water must be explored, like the harvesting of dew and fog. To estimate the quantity of potential harvestable water in semi-arid Nigeria, a 3-hourly meteorological data from 8 weathers stations across the semi-arid region of Nigeria were analysed. The data; from January to December 2009; was retrieved in June 2015 from the European Center for Medium range Weather Forecasting (ECMWF) database, by the Finnish Meteorological Institute (FMI). The available data includes the wind speed (WS) and direction, air temperature, and the relative humidity (RH). From the available data, the following needed parameters to calculate the potential water harvestable in each area were first calculated; the air saturated vapour pressure, air vapour pressure, absolute humidity, and finally the potential water harvestable through air humidity over 3hours (WH3). Only the RH ≥69% were used in calculating the WH3, at lower values water harvesting isn’t possible. Also, only the WS ≤2 was used, at higher values of WS, evaporation occurs. All the areas showed the possibility of harvesting water from dew and fog. The possibility was however higher during the wet season both in quantity and in frequency in all the areas considered than in the dry season. en
dc.language.iso eng
dc.publisher Helsingfors universitet sv
dc.publisher University of Helsinki en
dc.publisher Helsingin yliopisto fi
dc.subject dew en
dc.subject fog en
dc.subject water harvesting en
dc.subject relative humidity en
dc.subject semi arid en
dc.subject arid en
dc.title Improving water shortages through DF trap : case study Nigeria en
dc.type.ontasot pro gradu-avhandlingar sv
dc.type.ontasot pro gradu -tutkielmat fi
dc.type.ontasot master's thesis en
dc.subject.discipline Agroteknologi sv
dc.subject.discipline Agrotechnology en
dc.subject.discipline Agroteknologia fi
dct.identifier.urn URN:NBN:fi:hulib-201605031566

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