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Theoretical and Applied Climatology

, Volume 101, Issue 3–4, pp 371–379 | Cite as

Long-term variations of available solar radiation on seasonal timescales in 1955–2006 at Tartu-Tõravere Meteorological Station, Estonia

  • Kalju EermeEmail author
  • Ain Kallis
  • Uno Veismann
  • Ilmar Ansko
Original Paper

Abstract

The time series of the daily sums of global and direct irradiance recorded at Tartu-Tõravere Meteorological Station site (58°16′N, 26°28′E, 70 m a.s.l.) in 1955–2006 have been analyzed in seasonal timescales. The average daily ratio G/G clear of available global irradiance to its local climatic clear-sky value in the summer half-year corresponds to 65.5%, while that of the direct irradiance on the horizontal surface I′/I′ clear was 41% of the climatic clear-sky value. In the case of dry Rayleigh atmosphere as a reference, these ratios are 53.5% and 28%, respectively. The time series of the summer season totals reveal a longer interval of reduced values in 1976–1993 as well as two periods of frequent sunny summers in 1967–1975 and since 1994. The probability density distribution of the summer season totals during the observed period is strongly asymmetric; in spring, however, it is close to the normal distribution. In winter, there is a moderate negative correlation between the G/G clear and the North Atlantic Oscillation as well as the Arctic Oscillation indices.

Keywords

Aerosol Optical Depth North Atlantic Oscillation Sunshine Duration Cloud Amount Probability Density Distribution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The work has been supported by grant number 7137 of the Estonian Science Foundation. Part of the work is related to the EC COST 726 action. The authors thank the Estonian Meteorological and Hydrological Institute for the radiation data. The authors also thank two anonymous reviewers for the useful comments and suggestions.

References

  1. Basten CJ, Weir BS, Zeng Z-B (2002) A reference manual and tutorial for QTL mapping. Available via http://statgen.ncsu.edu/qtlcart/manual/node71.html#3908. Accessed 15 Dec 2008
  2. Blazejczyk K (1994) Changes of skin temperature and body heat content in fluctuating outdoor climate. In: Frim J, Ducharme MB, Tikuissi P (eds) 6th International Conference on Environmental Ergonomics, Conference Proceedings, Montebello, Canada, pp 226–227Google Scholar
  3. Blazejczyk K, Morita T, Kanikowska D, Tokura H, Wiktorowicz K, Ueno T, Bakowska M (2005) Regional differences in diurnal and seasonal cycles of lighting conditions and melatonin secretion. Ann Meteorol 41:301–304Google Scholar
  4. Che HZ, Shi GY, Zhang XY, Arimoto R, Zhao JQ, Xu L, Wang B, Chen ZH (2005) Analysis of 40 years of solar radiation data from China, 1961–2000. Geophys Res Lett 32:L06803CrossRefGoogle Scholar
  5. Che HZ, Shi GY, Zhang XY, Zhao JQ, Li Y (2007) Analysis of sky conditions using 40 year records of solar radiation data in China. Theor Appl Climatol 89:83–94CrossRefGoogle Scholar
  6. D'Andrea F, Provenzale A, Vautard R, De Noblet-Decoudre N (2006) Hot and cool summers: multiple equilibria of the continental water cycle. Geophys Res Lett 33:L24807CrossRefGoogle Scholar
  7. Doblas-Reyes FJ, Hagedorn R, Palmer TN (2006) Developments in dynamical seasonal forecasting relevant to agricultural management. Clim Res 33:19–26CrossRefGoogle Scholar
  8. Eerme K, Veismann U, Lätt S (2006) Proxy-based reconstruction of erythemal UV doses over Estonia for 1955–2004. Ann Geophys 24:1767–1782CrossRefGoogle Scholar
  9. Hodder SG, Parsons K (2007) The effects of solar radiation on thermal comfort. Int J Biometeorol 51(3):233–250CrossRefGoogle Scholar
  10. Hu Y, Fu Q (2007) Observed poleward expansion of the Hadley circulation since 1979. Atmos Chem Phys 7:5229–5236CrossRefGoogle Scholar
  11. Huang J (2007) Prediction of air temperature for thermal comfort of people in outdoor environments. Int J Biometeorol 51:375–382CrossRefGoogle Scholar
  12. Jaagus J (1996) Climate trends in Estonia during the period of instrumental observations and climate scenarios. In: Punning J-M (ed) Estonia in the system of global climate change, Publication 4. Institute of Ecology, Tallinn, pp 35–48Google Scholar
  13. Järvet A, Jaagus J (1996) The impact of climate change on hydrological regime and water resources in Estonia. In: Punning J-M (ed) Estonia in the system of global climate change, Publication 4. Institute of Ecology, Tallinn, pp 84–103Google Scholar
  14. Kasten F (1996) The Linke turbidity factor based on improved values of the integral Rayleigh optical thickness. Sol Energy 56(3):239–244CrossRefGoogle Scholar
  15. Kasten F, Young AT (1989) Revised optical air mass tables and approximation formula. Appl Opt 28:4735–4738CrossRefGoogle Scholar
  16. Kvalevåg M, Myhre G (2007) Human impact on direct and diffuse solar radiation during the industrial era. J Clim 20:4874–4883CrossRefGoogle Scholar
  17. Kysely J, Huth R (2005) Changes in atmospheric circulation over Europe detected by objective and subjective methods. Theor Appl Climatol 85:19–36CrossRefGoogle Scholar
  18. Lohmann S, Schillings C, Mayer B, Meyer R (2006) Long-term variability of solar direct and global radiation derived from ISCCP data and comparison with reanalysis data. Sol Energy 80(11):1390–1411CrossRefGoogle Scholar
  19. Mäkinen TM, Raatikka V-P, Rytkonen M, Jokelainen J, Rintamäki H, Ruuhela R, Näuhä S, Hassi J (2006) Factors affecting outdoor exposure in winter: population-based study. Int J Biometeorol 51(1):27–36CrossRefGoogle Scholar
  20. National Weather Service: Climate Prediction Center. Available via http://www.cpc.ncep.noaa.gov/products/precip/CWlink/daily_ao_index/teleconnections.shtml. Accessed 15 Dec 2008
  21. Peterson KA, Lu J, Greatbatch RJ (2003) Evidence of nonlinear dynamics in the eastward shift of the NAO. Geophys Res Lett 30(2):1030CrossRefGoogle Scholar
  22. Portis DH, Walsh JE, El Hamly M, Lamb PJ (2000) Seasonality of the North Atlantic Oscillation. J Clim 14:2069–2078CrossRefGoogle Scholar
  23. Russak V, Kallis A (compilers), Tooming H (ed) (2003) Handbook of Estonian solar radiation climate. EMHI, Tallinn, pp 384 (in Estonian)Google Scholar
  24. Russak V, Ohvril H, Teral H, Jõeveer A, Kallis A, Okulov O (2005) Multi-annual changes in spectral aerosol optical thickness in Estonia. In: Abstracts of the European Aerosol Conference 2005, Ghent, Belgium, 28 August–2 September 2005, pp 399Google Scholar
  25. Sanchez-Lorenzo A, Brunetti M, Calbó J, Martin-Vide J (2007) Recent spatial and temporal variability and trends of sunshine duration over the Iberian Peninsula from a homogenized data set. J Geophys Res 112:D20115CrossRefGoogle Scholar
  26. Straile D, Stenseth NC (2007) The North Atlantic Oscillation and ecology: links between historical time series, and lessons regarding future climate warming. Clim Res 34(3):259–262CrossRefGoogle Scholar
  27. Šuri M, Huld TA, Duniop ED, Ossenbrink HA (2007) Potential of solar electricity generation in the European Union member states and candidate countries. Sol Energy 81(10):1295–1305CrossRefGoogle Scholar
  28. Unger J (1999) Comparisons of urban and rural bioclimatological conditions in the case of a Central-European city. Int J Biometeorol 42(3):139–144CrossRefGoogle Scholar
  29. Weihs P, Huber K (2005) Investigation of the modelling accuracy of UV and visible radiation fluxes in an urban environment. Ann Meteorol 41:158–161Google Scholar
  30. Wild M, Gilgen H, Roesch A, Ohmura A, Long CN, Dutton EG, Forgan B, Kallis A, Russak V, Tsvetkov A (2005) From dimming to brightening: decadal changes in solar radiation at Earth's surface. Science 308(5723):847–850CrossRefGoogle Scholar
  31. Zhao J, Cao Y, Shi J (2006) Core region of Arctic Oscillation and the main atmospheric events impact on the Arctic. Geophys Res Lett 33:L22708CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Kalju Eerme
    • 1
    Email author
  • Ain Kallis
    • 2
    • 4
  • Uno Veismann
    • 1
  • Ilmar Ansko
    • 1
    • 3
  1. 1.Tartu ObservatoryTõravereEstonia
  2. 2.Estonian Meteorological and Hydrological InstituteTõravereEstonia
  3. 3.University of TartuTartuEstonia
  4. 4.Tallinn University of TechnologyTallinnEstonia

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