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AgMIP and APSIM weather data files

The Agricultural Model Intercomparison and Improvement Project (AgMIP) brought into the spotlight agricultural modelling data sharing. Within AgMIP, various agricultural models (such as the APSIM) were transformed into the AgMIP data scheme.

AgMIP and APSIM data files use different timestamp components. The challenge here is to compose these into one universal timestamp. APSIM uses julian dates and years, while AgMIP timestamp is represented through year, month, date components.

Another challenge was related with metadata encoded in the preamble of APSIM data files. Specifically, prior to the timeseries there are station metadata such as station name, location and others. The APSIM data files share the same structure, so these preamble-encoded metadata distinguish the different stations.