Res. Agr. Eng., 2010, 56(4):127-137 | DOI: 10.17221/4/2010-RAE

Frequency of occurrence of a certain air temperature at various sites in the Czech Republic

V. Šleger, P. Neuberger
Faculty of Engineering, Czech University of Life Science Prague, Prague, Czech Republic

The present paper analyses the problem of calculation of the average number of hours in a year during which air temperature is lower than a preselected limiting level. A method for estimating the number of hours in situations where only the minimum, average, and maximum daily temperature data are available has been suggested and tested. The work encompassed 30 sites in the Czech Republic at different altitudes and with different average temperatures, using weather data from the 1961-2000 period. The results are presented in the tabular form. It is shown that interdependence exists between the number of hours with temperatures lower than a preselected limiting level and the average yearly temperature at the specific site. For instance, temperatures below 15°C during a typical year at a site with an average yearly temperature θyr (°C) within the range of 2.8°C to 9°C can be expected (coefficient of determination 0.986) for a time τ (h) calculated from the quadratic equation τ = -12.992 × θyr 2 - 116.6 × θyr + 8,483.

Keywords: climatic conditions; weather data; altitude; regression function

Published: December 31, 2010  Show citation

ACS AIP APA ASA Harvard Chicago Chicago Notes IEEE ISO690 MLA NLM Turabian Vancouver
Šleger V, Neuberger P. Frequency of occurrence of a certain air temperature at various sites in the Czech Republic. Res. Agr. Eng. 2010;56(4):127-137. doi: 10.17221/4/2010-RAE.
Share...
Download citation
  • BibTeX (.bib)
  • Bookends (.ris)
  • EasyBib (.ris)
  • EndNote (.enw)
  • EndNote 8 (.xml)
  • ISI WoS (.isi)
  • Medlars (.medlars)
  • Mendeley (.ris)
  • MODS (.xml)
  • Papers (.ris)
  • RefWorks (.txt)
  • RefManager (.ris)
  • RIS (.ris)
  • MS Word (.xml)
  • Zotero (.ris)
    • Open full article

    References

    1. ČSN EN 12831, 2005. Tepelné soustavy v budovách - Výpočet tepelného výkonu (Heating systems in buildings - Method for calculation of the design heat load). Prague, Czech Office for Standards, Metrology and Testing.
    2. ASHRAE Handbook - Fundamentals, 2005. American Society of Heating, Refrigerating and Air-Conditioning Engineers. Atlanta, USA, Ashare.
    3. Květoň V., 2001. Normály teploty vzduchu na území České republiky a vybrané teplotní charakteristiky období 1961-2000 (Climatological normals of air temperature of the Czech Republic in the period 1961-1990 and selected air temperature characteristics of the period 1961-2000). Prague, Czech Hydrometeorological Institute.
    4. Šleger V., Neuberger P., Polák M., 2009. Feasibility of using heat-recovery exchangers in livestock buildings at a site at a specific altitude with specific average outdoor air temperature. Infrastructure and ecology of rural areas, 7: 47-56.

    This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY NC 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.


    Return to the content