What is it about?
In this study, a rainfall climatological database has been developed by first homogenizing rainfall data from 113 meteorological stations distributed within the four agro-ecological zones of Ghana. First, absolute homogenization was performed to detect the various change points within the observed data, which were then augmented based on the magnitude of the changepoints, using QMadj. Afterwards, the homogenized rainfall data was gridded at a 0.5 ∘ × 0.5∘ spatial resolution using the MSC with tensioning parameter algorithm, allowing for comprehensive spatial fields assessment on monthly, seasonal and annual time-scales.
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Why is it important?
The developed GMet v1.0 data will be potentially useful for validation studies and other rainfall-based applications such as disease-modelling, hydrological modelling, among others. This is a preliminary study, with the intent of updating the database for years beyond the current study scope. Also, the data is currently available only to weather and climate data users in Ghana, till approved for upload to a wider user community, e.g. via the GTS by Ghana Meteorological Agency.
Perspectives
This paper form part of rainfall variability and data reconstruction studies from the meteorology and climate science research group in Kwame Nkrumah University of Science and Technology. It is useful paper and provides an up to date rainfall climatology for Ghana. The article was a great pleasure as it has co-authors with whom my research group have outstanding collaborations.
Leonard K. Amekudzi
Kwame Nkrumah University of Science and Technology
Read the Original
This page is a summary of: Development of high spatial resolution rainfall data for Ghana, International Journal of Climatology, August 2017, Wiley,
DOI: 10.1002/joc.5238.
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