Spatio-Temporal Variation of Virtual Temperature in Ilorin, Kwara State, Nigeria

Johnson Abimbola Oladiran; Muhammed Sani Otto; Ahmed Abdullahi Sule; Faisal Usman  Muhammad; Kamal Gonto; Abe Ayoola; Tijani Alhassan; Zahra Sanusi Liman; Oluwasesan Adeniran  Falaiye; Bukola Olanrewaju Dada

doi:10.62050/ljsir2024.v2n2.270

Authors

Oladiran Johnson Abimbola Department of Physics, Federal University of Lafia, Nasarawa State Author
Muhammed Sani Otto Physics Department, Federal University of Lafia, Nasarawa State Author
Ahmed Abdullahi Sule Department of Physics, Federal University of Lafia, Nasarawa State Author
Faisal Usman Muhammad Department of Physics, Federal University of Lafia, Nasarawa State Author
Kamal Gonto Department of Physics, Federal University of Lafia, Nasarawa State Author
Abe Ayoola Physics Department, Federal University of Kashere, Gombe State Author
Tijani Alhassan Department of Physics, Federal University of Lafia, Nasarawa State Author
Zahra Sanusi Liman Department of Physics, Federal University of Lafia, Nasarawa State Author
Oluwasesan Adeniran Falaiye Department of Physics, University of Ilorin, Kwara State Author
Bukola Olanrewaju Dada Department of Physical sciences, Landmark University, Omu-Aran, Kwara State Author

DOI:

https://doi.org/10.62050/ljsir2024.v2n2.270

Keywords:

Atmosphere, virtual temperature, daily-hour quartile, relative humidity, vertical profile

Abstract

This study investigates the diurnal and vertical variations of virtual temperature (T_v) and ambient temperature (T) from 2013 to 2023 in Ilorin. Data analysis reveals that T_v peaks between 1200 and 1400 hours daily, influenced mainly by relative humidity and inversely by temperature changes, with no significant pressure impact. At the planetary boundary layer, T_v and T exhibit marginal differences, converging higher in the troposphere due to diminishing specific humidity. Temporal trends indicate a surface temperature increase of 0.065 degrees and a T_v increase of 0.016 degrees over the past decade. While no simple linear correlation between T_v and relative humidity was found, seasonal patterns suggest potential underlying correlations. This highlights the complex interplay of atmospheric variables in influencing virtual temperature and underscores the need for further investigation into seasonal effects.

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References

Richardson, L.F. (1922). “Atmospheric diffusion shown on a distance-neighbour graph”. Proceedings of the Royal Society, A 110(752), Pp 709-737.

M.S. Otto, O.J. Abimbola, O.A. Falaiye, F.U. Muhammed. Quarterly Variation of Tropospheric Surface Refractivity in Ilorin, Nigeria, Malaysian Journal of Science, 42(3); 85 – 91, October, 2023. https//doi.org/10.22452/mjs.vol42no3.11

Bentley, M. L., Sparks J. R., & Krichbaum, W. E (2008) “Investigating the use of virtual temperature in weather forecasting”. 23(1), Pp. 58-66.

Bailey, Desmond T. (2000) "Upper-air Monitoring" (PDF). Meteorological Monitoring Guidance for Regulatory Modeling Applications. John Irwin. Research Triangle Park, NC: United States Environmental Protection Agency. Pp. 9–14. EPA-454/R-99-005.

Andrew S. Kowalski, Enrique P. S. (2010). “A new definition of Virtual temperature, Valid for the Atmosphere and CO2-rich Air of the Vadose Zone” Journal of Applied Meteorology and Climatology, 49, Pp. 1692. https://doi.org/10.1175/2010JAMC2534.1

Ajayi, V. O., Ogunjobi, K. O., & Salami, A. T. (2016) “Spatio-temporal variability of virtual temperature in Nigeria” Theoretical and Applied Climatology, 123(3-4), Pp. 689-702.

Olatunji (2019) “The relationship between temperature, relative humidity and virtual temperature in north central Nigeria”. International journal of physical sciences, 14(6), 59-68.

Akpootu, D. O., Iliyasu, M. I., Mustapha, W., Salifu, S. I., Sulu, H. T., Arewa, S. P., & Abubakar, M. B. (2019b). Models for Estimating Precipitable Water Vapour and Variation of Dew Point Temperature with Other Parameters. Journal of Water Resources and Ocean Science, 8(3), 28-36. https://doi.org/10.11648/j.wros.20190803.11

Bobadoye, A.O., Ukhurebor, K.E., Siloko, I.U., Nwankwo, W. And Odesanya, I. (2020). Estimation of some Thermodynamic Meteorological Variables from measured Meteorological Data. Ethiopian Journal of Environmental Studies & Management 13(5): 620 – 632, 2020. ISSN:1998-0507. https://ejesm.org/doi/v13i5.10

Li L, Zhou Q-J, Chan P-W and Yang H-L (2023), Variation of virtual temperature and wind in the atmospheric boundary layer over the pearl river estuary during 2011–2020. Front. Environ. Sci. 10:1104553. https://doi.org/10.3389/fenvs.2022.1104553

Peter T., Desher, T., & Sigsbee, E (1957) “The determination of the virtual temperature” Quarterly journal of the Royal Meteorological Society, 83(355), 391-395.