🌡️ Emberger Climagram
Station climate classification by Emberger’s pluviothermic quotient (Q2) and bioclimatic zone.
Study station
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Settings
Q2 = 2000·P / (M² − m²). P, M and m are averages over the study period (30 years recommended, e.g. 1991–2020); only complete years are used.
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Add the order to get 2 high-quality downloads without watermark + the detailed report.
You can place several stations on one chart (up to 12): pick a point and add it, then another, and so on. The chart is downloaded with all its stations in a single image.
Online Emberger climagram — Q2 and bioclimatic zone, no software
Pick a station and a period to get its position in the Emberger climagram, its bioclimatic zone (humid, subhumid, semi-arid, arid, Saharan) and winter class.
Related tool: Climate anomaly SPI
How is Q2 calculated?
Q2 = 2000·P / (M² − m²), where P is mean annual precipitation (mm), M the mean daily maximum of the hottest month and m the mean daily minimum of the coldest month, both in kelvin.
What is the data source?
ERA5-Land reanalysis (Copernicus / ECMWF) via Open-Meteo: daily precipitation and maximum and minimum temperature.
Is the platform free?
Generation, preview and customization are free. The watermark-free PNG and the Word report require an approved order (2 image downloads per order).