Evaluation of Factors Influencing Changes in Land Surface Temperature at Gas Flaring Sites in the Niger Delta, Nigeria.
Keywords:Evaluation, Factors, Gas Flaring, Satellites data, Land Surface Temperature, Niger Delta
This research investigates factors that can affect changes in Land Surface Temperature (LST) retrieved from satellites data at 11 gas flaring sites in Rivers State, Nigeria. 8 Landsat 5 Thematic Mapper (TM), 22 Landsat 7 Enhanced Thematic Mapper Plus (ETM), and 4 Landsat 8 Operational Land Imager and Thermal Infrared Sensor (OLI-TIRS) data from 14/12/1984 to 05/02/2022 with 3 cloud cover were used. LST was derived from the atmospherically corrected thermal band; difference between vegetation LST at 60m from the flare stack and vegetation LST at 450m from the flare stack was computed as (LST60-450m). Available factors that can affect LST60-450m) considered are size of the facility, height of the flare stack and time. Pairwise linear regression analysis was applied to the relationship between each of the factor considered and LST60-450m) in North, East, South, and West directions with 0.01 to obtain r-values and p-values. Multiple linear regression analysis was used to analyze the relationships among multiple variables (x1 month, x2 size of the facility and x3 stack height, y1 LST60-450mN) and y2 LST60-450mE). The results (r2 0.05, and p-value 0.016) show that only 5 of the variability in LST60-450m) could be accounted for by the variables considered. From these results, it can be concluded that size of the facility, height of the flare stack and time could only accounted for 5 of the variability in LST60-450m) at the flaring sites examined in the Niger Delta.
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© 2022, Centre for Foundation and Interdisciplinary Studies, Baze University, Abuja
Electronic Publication 2022
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