Global Monthly Cloud Fraction Maps from ADEOS-II Satellite

2003 monthly cloud fraction data at a 1/4-degree spatial resolution, derived from the GLI sensor onboard the JAXA ADEOS-II (Midori II) satellite. This dataset provides global maps of cloud coverage, classified by cloud type using the ATSK16 algorithm, for use in environmental monitoring. The product was generated by the Japan Aerospace Exploration Agency (JAXA) and last updated in October 2003.

Use Cases

• Analyze spatial patterns of cloud fraction and cloud type (cumulus vs. stratus) across the 1/4-degree global grid.
• Estimate surface radiation budget by integrating cloud fraction data with other atmospheric parameters.
• Validate or calibrate climate model outputs for cloud cover using the satellite-derived monthly statistics.
• Study seasonal or interannual variability in cloud coverage using the 1-month and available 16-day statistical periods.

Strengths

• Global spatial coverage at a 1/4-degree resolution.
• Cloud classification derived from the specific ATSK16 algorithm using spatial difference metrics.
• Data is provided as a processed Level 3 map product, projected in EQR.

Limitations

• Temporal coverage is limited to 2003, with no recent updates.
• The physical quantity unit for cloud fraction is listed as 'None', which may require clarification for quantitative analysis.
• Sample size and exact row count for the global grid are unspecified.

Provenance

Source

Japan Aerospace Exploration Agency (JAXA).

Collection Method

Remote sensing data from the GLI (Global Imager) optical sensor onboard the ADEOS-II satellite, processed to Level 3 binned and mapped products.

Time Range

2003.

Freshness

Data last updated in 2003; no ongoing update frequency specified.

Geography

Global.