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Meteorology Zarr

Path:

  • /data/aurora/products/vaisalamet/vaisalamet.zarr

Dataset shape

  • dimension: time
  • deployed shape when checked on 2026-05-21:
  • time=271690
  • time coverage when checked: 2026-05-02 00:00:02 to 2026-05-21 20:09:59
  • sorted unique time coordinate

Time coordinate

  • time is parsed from the raw timestamp column
  • timestamps are localized as Europe/London
  • timestamps are converted to UTC before storage

Useful root attributes

  • instrument = "vaisalamet"
  • title = "Vaisala met station data"
  • source = "vaisala_met_level0_*.dat"

Variable layout

  • one float32 time series per retained source column
  • the deployed store currently contains 68 variables

Examples include:

  • baro_hPa
  • h1_ah
  • h1_e
  • h1_err_rh_meas_err
  • h1_err_temp_meas_err
  • the various *_err_*, *_dev_*, and *_st_* health and status flags

Schema note

  • append runs align incoming files to the existing Zarr schema
  • missing existing columns are filled with NaN
  • newly appearing columns are dropped unless the store is rebuilt
  • append writes materialize only the already-filtered new sample block before writing, matching the cross-instrument Zarr append policy

Chunking

  • time-only variables are chunked (1200,)

Display note

The dashboard's Meteorology instrument uses this Zarr as its main source, but the final displayed summary also merges selected ASFS logger met traces at presentation time.