Satellite Visible And Near-Infrared Imagery At 1km Resolution

Global satellite imagery data from the GLI sensor onboard the ADEOS-II (Midori II) spacecraft, covering visible and near-infrared wavelengths from 380 to 895 nm. The dataset is produced by the Japan Aerospace Exploration Agency (JAXA) for monitoring Earth's environment, with a spatial resolution of 1 kilometer and a swath width of 1600 km. The data was last updated in October 2003 and represents Version 2 of the product.

Use Cases

• Analyzing land and ocean surface reflectance from the 19 VNIR channels (ch 01-19) for vegetation or water quality studies.
• Applying the attached projection coefficients to geolocate and map the 1km resolution imagery for specific regions.
• Using the Ocean/Land flags to segment and process data separately for marine versus terrestrial research applications.
• Filtering data quality by utilizing the attached flags for missing data, saturation, supersaturation, and transient response.
• Calibrating atmospheric correction models using the radiometrically and geometrically corrected VNIR data.

Strengths

• Data has been processed with radiometric and geometric corrections, enhancing usability for analysis.
• Includes 19 spectral channels in the visible and near-infrared range (380-895 nm), providing detailed spectral information.
• Product is at a defined Version 2, indicating a level of processing maturity and consistency.
• Covers a wide swath of 1600 km per satellite pass, enabling broad area observation.

Limitations

• Data is from 2003, making it temporally stale for studying current environmental conditions.
• The 1km spatial resolution is coarse for applications requiring detailed local analysis.
• The HDF format and specific sensor data may require specialized libraries and domain knowledge to process effectively.

Provenance

Source

Japan Aerospace Exploration Agency (JAXA).

Collection Method

Collected by the GLI (Global-Imager) optical sensor onboard the ADEOS-II (Midori II) satellite.

Time Range

Coverage corresponds to the ADEOS-II mission operational period, last updated 2003-10-25.

Freshness

Data last updated in 2003; no update frequency provided.

Geography

Global coverage from satellite observations.