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Homoclimate of Iceland’s meteorological stations for comparison with the homoclimate of some northern countries. P. 8–17

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Section: Geosciences






Alexander Sadovski1
1Bulgarian Science Center of the IEAS, Sofia, Bulgaria
Maria Ivanova2
2ISSATPP „N. Poushkarov“, Sofia, Bulgaria
Corresponding author: Alexander Sadovski (


In many fields including agroclimatology, pedology, plant introduction, environmental health and agricultural transfer, detection of areas of similar climate is of significant interest. Numerical methods including cluster analysis, similarity measures, and other techniques were used to compare climatic data from Islandian meteorological stations to classify them according to similar homoclimate. Using Euclidean distance and City-block (Manhattan) distance, data from Iceland, Finland, Sweden, Norway, and Alaska state of the USA were analyzed to reveal homoclime. One of the conclusions from the study is that Iceland has a similar climate to Alaska and Norway. Climate change is already affecting agriculture, with effects unevenly distributed across the world. These changes will undoubtedly lead to a reconsideration of the question of allocation of appropriate agricultural crops to given areas and evaluation of bioclimatic resources in territories with similar climate. Results from this study are related to the territory of Iceland, but the approach to classify meteorological stations according to similar homoclimate and reveal homoclime in selected territories is applicable everywhere in the world.


climate change; cluster analysis; homoclimate; homoclime; similarity measures
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  1. CIA. 2020. The World Factbook. Accessed Dec. 2020.
  2. Delimit. 2019. Delimit 4.1 - User Guide and Help Manual. Accessed Aug. 2019.
  3. Einarsson, M.Á. 1984. Climate of Iceland, in H. van Loon (Ed.): World Survey of Climatology: 15: Climates of the Oceans. Elsevier, Amsterdam, p. 673-697.
  4. Fick, S.E. and R.J. Hijmans. 2017. WorldClim 2: new 1km spatial resolution climate surfaces for global land areas. International Journal of Climatology 37 (12): 4302-4315.
  5. Gower, J.C., 1971. A general coefficient of similarity and some of its properties. Biometrics, 27, 857–871.
  6. Guðjónsdóttir S. (Ed.) 2018. Iceland in figures 2018, Volume 23. Published by Statistics Iceland. ISBN 978-9979-770-58-9.
  7. Icelandic Met Office. 2020. Climatological data: 30 years average 1961-1990 for selected stations. Accessed Oct. 2020.
  8. Iglesias A., L. Garrote, S. Quiroga, M. Moneo. 2012. A regional comparison of the effects of climate change on agricultural crops in Europe. Climatic Change, 112(1), 29-46.
  9. Lader R., U.S. Bhatt, J.E.Walsh, T.S.Rupp, P.A. Bieniek. 2016. Two-Meter Temperature and Precipitation from Atmospheric Reanalysis Evaluated for Alaska. Journal of Applied Meteorology and Climatology, V. 55, 901-922. DOI: 10.1175/JAMC-D-15-0162.1.
  10. Meigs, P. 1953. World distribution of arid and semi-arid homoclimates. In: Arid Zone Program, 1. Reviews of Research on Arid Land Hydrology. UNESCO, Paris, 203-210.
  11. McCarthy, A.M. 2016. Colorful climate comparison maps. Accessed Sept. 2020.
  12. Merriam-Webster Dictionary. Definition of Homoclime. Accessed Sept. 2020.
  13. Nojarov, P., 2017. Genetic climatic regionalization of the Balkan Peninsula using cluster analysis. J. Geogr. Sci., 27, 1, 43-61.
  14. Peltonen-Sainio, P. 2012. Crop production in a northern climate. In: Building resilience for adaptation to climate change in the agriculture sector. Proceedings of a Joint FAO/OECD Workshop, 23–24 April 2012, 183-216.
  15. Porter J.R., L. Xie, A.J. Challinor, K. Cochrane, S.M. Howden, M.M. Iqbal, D.B. Lobell, and M.I. Travasso. 2014: Food security and food production systems. In: Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part A: Global and Sectoral Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Field, C.B., V.R. Barros, D.J. Dokken, K.J. Mach, M.D. Mastrandrea, T.E. Bilir, M. Chatterjee, K.L. Ebi, Y.O. Estrada, R.C.  Genova, B. Girma, E.S. Kissel, A.N. Levy, S. MacCracken, P.R. Mastrandrea, and L.L. White (eds.)]. Cambridge University Press, Cambridge, UK and New York, USA, pp. 485-533.
  16. Prescott, J.A. 1938. The climate of tropical Australia in relation to possible agricultural occupation. Trans. Roy. Soc. S. Australia, 67, 312-318.
  17. Prescott, J.A., J.A. Collins and G.R. Shirpurkar, 1952. The comparative climatology of Australia and Argentina. Geograph. Rev., 42: 118-133.
  18. Russel, J.S. 1982. Selection of homoclimates based on comparisons with single stations and using monthly rainfall and temperature data. Agr. Meteorology, 26, 179-194.
  19. Russel, J.S., A.W. Moore. 1970. Detecting of Homoclimates by numerical analysis with reference to the Brigalow region (Eastern Australia). Agr. Meteorology, 7, 455-479.
  20. Sadovski, A.N. 2019. Detection of Similar Homoclimates by Numerical Analysis. Bulgarian Journal of Soil Science, Vol. 4, Issue 1, 69-75. Sofia. DOI:
  22. Stanev, S., M. Kyuchukova, S. Lingova. 1991. The climate of Bulgaria. Sofia, IMH-BAS Press, 500. (in Bulgarian).
  23. Statistics Iceland. 2015. Landshagir 2015 Statistical Yearbook of Iceland 2015. Editor Svava Guðjónsdóttir, 444 pp. ISBN 978-9979-770-55-8.
  24. Ward, J. H. 1963. Hierarchical grouping to optimize an objective function. J. Amer. Stat. Assoc., 58, 236.
  25. WGMS. 1999, updated in 2012. World Glacier Inventory, Version 1. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. DOI: Date Accessed 05.12.2020.