Biplots for Climate studies
Raeesa Ganey, Johané Nienkemper-Swanepoel, Roelof Coetzer
Climate change manifests as evolving patterns in climate conditions over time. This study focuses on historical observed climate data from African regions, using biplot visualisations to capture monthly measurements and reveal inter-variable associations. A baseline biplot (either a specific year or an average representation) is constructed and subsequent annual biplots are aligned to it using Generalised Orthogonal Procrustes Analysis (GOPA). This enables tracking of changes in coordinate density and axis configuration, offering insights into temporal shifts in climatic relationships. The method facilitates comparative exploration of multivariate climate trends spanning multiple decades.?
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