New Climatic Zones in Iran: A Comparative Study of Different Empirical Methods and Clustering Technique Faezeh Abbasi University of Tehran Saeed Bazgeer (  sbazgeer@ut.ac.ir ) University of Tehran https://orcid.org/0000-0001-7044-0528 Parviz Rezazadeh Kalehbasti I.R. of Iran Meteorological Organization (IRIMO) Ebrahim Asadi Oskoue Atmospheric Science and Meteorological Research Center Masoud Haghighat I.R. of Iran Meteorological Organization (IRIMO) Pouya Rezazadeh Kalebasti Stanford University, Research Article Keywords: Climatic classiｦcation, Climatic zones, Cluster analysis, Precipitation gradient, Thornthwaite and Mather method Posted Date: June 2nd, 2021 DOI: https://doi.org/10.21203/rs.3.rs-570400/v1 License:   This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Version of Record: A version of this preprint was published at Theoretical and Applied Climatology on October 13th, 2021. See the published version at https://doi.org/10.1007/s00704-021-03785-9.