Studies on diurnal air temperature pattern from daily maximum and minimum by estimating the parameters of sinusoidal and exponential models on weekly basis under semi arid climate of Hyderabad

Authors

  • N. N. SRIVASTAVA Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad
  • V.U.M. Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad
  • U. S. SAIKIA Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad
  • P. VIJAYA KUMAR Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad
  • A.V.M. SUBBA RAO Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad

DOI:

https://doi.org/10.54386/jam.v12i1.1259

Keywords:

Sinusoidal, exponential, model, air temperature

Abstract

The sinusoidal and exponential models for day time and night time temperature pattern have been fitted to weekly mean hourly air temperature data recorded at Hayathnagar Research Farm of CRIDA, Hyderabad during 1995-2007 using an automatic weather station. The lag coefficient ‘a’ of the sinusoidal model ranged between 1.150 – 4.372 and night time temperature coefficient ‘b’ of exponential model ranged between 2.175 – 4.334 during 1st - 52nd standard meteorological weeks. Coefficient of determination (R2) values were between 0.892 – 0.995 for the sinusoidal and between 0.931 – 0.988 for the exponential model. Goodness of fit was tested by Student’s ‘t’ statistics as well by the graphical plots of observed vs. estimated mean weekly diurnal temperatures during 2008.

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Published

01-06-2010

How to Cite

N. N. SRIVASTAVA, V.U.M., U. S. SAIKIA, P. VIJAYA KUMAR, & A.V.M. SUBBA RAO. (2010). Studies on diurnal air temperature pattern from daily maximum and minimum by estimating the parameters of sinusoidal and exponential models on weekly basis under semi arid climate of Hyderabad. Journal of Agrometeorology, 12(1), 8–14. https://doi.org/10.54386/jam.v12i1.1259

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Section

Research Paper

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