Global Land Surface Climate Means, 1901-1990

Global land areas, excluding Antarctica, are covered by this gridded dataset of 10-year mean monthly surface climate variables for the period 1901-1990. It provides seven variables at 0.5-degree resolution: precipitation, mean temperature, diurnal temperature range, wet-day frequency, vapour pressure, cloud cover, and ground-frost frequency. The data was constructed using an anomaly approach relative to the 1961-1990 normal period, combining station data from the Climatic Research Unit and the Global Historic Climatology Network.

Use Cases

• Analyzing long-term precipitation trends over global land areas.
• Modeling historical temperature variability using mean temperature and diurnal range data.
• Studying changes in cloud cover and vapour pressure for climate model validation.
• Investigating frost frequency patterns and their relation to other climate variables.

Strengths

• Covers a long historical time range (1901-1990) explicitly stated in the input.
• Provides seven specific climate variables at a defined spatial resolution (0.5 degree).
• Uses a documented anomaly methodology based on station data from authoritative sources (Climatic Research Unit, GHCN).

Limitations

• Metadata conflicts exist: one platform lists a last updated date of 2026-04-10, while another lists 1991-01-01.
• Specific row counts, file sizes, and detailed column names are not provided in the input.
• The dataset excludes Antarctica and is limited to land areas.

Provenance

Source

Climatic Research Unit and Global Historic Climatology Network (GHCN)

Collection Method

Anomaly approach combining station measurement data with high-resolution mean monthly climatology.

Time Range

1901-1990

Freshness

2026-04-10 03:03:48.298426

Geography

Global land areas, excluding Antarctica