Whenever these climate layers are used in a publication the original data should be cited as: University of East Anglia, Climatic Research Unit (CRU) Time-Series (TS) Version 3.23 of High Resolution Gridded Data of Month-by-month Variation in Climate (Jan. 1901- Dec. 2014). Centre for Environmental Data Analysis, 09 November 2015. DOI for source data citation: http://dx.doi.org/10.5285/4c7fdfa6-f176-4c58-acee-683d5e9d2ed5