Poor air quality is widely considered as one of the major environmental hazards confronting several urban centres worldwide. This study examined regional trend in ambient air quality footprints in Calabar Metropolis. Data on emission level of CO, NO2, SO2, H2S, and SPM2.5 were collected using Crowcon Gasman, while point coordinates were collected using Garmin GPSMap 60CSx device. Interpolation algorithm in Geographic Information Systems infrastructure was used to generate the regional trend maps...
The aim of this study is to model the temperature time series at Malaysian high population area during dry season through chaos theory. The selected high population area is Shah Alam located in Selangor state of Malaysia. Chaos theory modelling is categorized into two parts namely analysis and prediction. Analysis by the phase space plot showed that the nature of the observed temperature time series is chaos. Hence, the time series is predicted via the chaotic model. Results from the chaotic mod...
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