co2-ppm-daily

Dataset Overview

Data Source

• The dataset is provided by the Earth System Research Laboratory.
• It comprises near‑continuous daily measurements of atmospheric dry‑air CO₂ mole fraction at Mauna Loa, Hawaii.

Data Content

• Time coverage:
  • First source: 1 Jan 1958 – 31 Dec 2004.
  • Second source: 1 Jan 1973 – 31 Dec 2017.
  • Third source: continuously updated to the latest date.
• Overlaps exist; the output file contains all available values.

Data Format and Storage

• Output file location: data/co2-ppm-daily.csv.
• Units: mole fraction reported in micromoles per mole of dry air (10⁻⁶ mol/mol), i.e., ppm.

License

• The data package follows the ODC‑PDDL‑1.0 license.

Usage Restrictions

• Do not claim ownership of the data.
• Do not imply endorsement or affiliation with NOAA.
• Do not modify the data and present it as official government material.