FOG Level 2 product provides daily global fog detection over oceans and land areas of China. The product is generated by SCIOPS using FY-3A VIRR satellite data and image processing techniques. It has a spatial resolution of 0.01 degrees.
Use Cases
- Classify fog versus other atmospheric targets using infrared, mid-infrared, and visible channel spectral characteristics from VIRR data.
- Map daily fog occurrence and extent over global sea regions and China land areas using the 0.01-degree resolution geospatial product.
- Integrate the fog detection layers with GIS data for environmental and transportation hazard modeling.
Strengths
- Global spatial coverage for sea areas and specific coverage for China land.
- Daily temporal resolution for monitoring diurnal and seasonal fog patterns.
- Utilizes multiple spectral channels (infrared, mid-infrared, visible) for target discrimination.
Limitations
- Specific row/record count and total file size are unknown.
- Geographic coverage is biased, with global data for oceans but land data limited to China.
- Data quality and validation details for the fog detection algorithm are not provided.
Provenance
- Source
- SCIOPS, using data from the FY-3A satellite's Visible and Infrared Radiometer (VIRR).
- Collection Method
- Derived from VIRR satellite imagery through spectral analysis and image processing techniques.
- Time Range
- null
- Freshness
- Daily production frequency.
- Geography
- Global oceans and land areas of China.