Hydrometeorological Study of Saturated Vapour Pressure (SVP) of Warri, Nigeria
Y. S. Onifade *
Department of Physics, Federal University of Petroleum Resources, Effurun, Warri, Delta State, Nigeria.
V. B. Olaseni
Department of Physics, Federal University of Petroleum Resources, Effurun, Warri, Delta State, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
The amount of water vapour present in the air is indirectly expressed through vapour pressure and for any given temperature there is a limit for water vapour that can be held by air. If the air is holding water vapour which is equal to the maximum that it can hold at a given temperature, then the air is said to be saturated. Hydrometeorological study was carried out using vapour pressure (VP) and maximum temperature data for Warri through 2009 – 2018 (10 years) Saturation Vapour Pressure (SVP) were estimated. A graph is established showing the relationship between the Saturation Vapour Pressure (SVP) and the temperature also the graphical representation showing variational trend of SVP and VP were plotted. The study shows the dew point (Td) ranging from 29.9°C to 31.5°C which explained the likely rainfall at any temperature below Td. The study also confirmed increase in SVP bringing increase in Temperature and the variational trend shows the same pattern all through.
Keywords: Vapour pressure, saturated vapour pressure (SVP), dew point, variational trend