VIIRS/JPSS2 Atmospherically Corrected Surface Reflectance 6-Min L2 Swath 375m, 750m - V2

VJ209 contains approximately 6 minutes of data yielding 240 granules in a 24-hour cycle. **

Note

** JPSS-2 was renamed NOAA-21 after launch. ##### Spectral Band Coverage VJ209 offers surface reflectance values for the following resolutions and bands:

• 375-meter resolution: Bands I1, I2, and I3
• 750-meter resolution: Moderate (M) Bands M1-M5, M7, M8, M10, and M11 ##### Algorithm Inputs The inputs to the surface reflectance algorithm include top-of-atmosphere reflectance derived from the VIIRS I-bands and M-bands, VIIRS Cloud Mask (VJ235_L2), VIIRS Aerosol Optical Thickness (VJ204_L2), Aerosol Model Information (VJ2AMI_L2), VIIRS Geolocation (VJ203IMG), and atmospheric data from NCEP (National Centers for Environmental Prediction) reanalysis (surface pressure, atmospheric precipitable water, and ozone concentration). All surface reflectance products are generated under all atmospheric conditions for daytime only; nighttime and ocean observations are excluded. Reflectance values when not produced, are replaced by fill-values in the L2 products and are excluded in the Level 3 (L3) products. ##### Product Validation and Data Record The version 2.0 (v2.0) Surface Reflectance products are validated to Stage 3; this means that the uncertainties in this product are well-quantified through comparison with both in situ and other reference data. These uncertainties are characterized in a statistically rigorous manner over multiple global locations and time periods. The spatial and temporal consistency of this product has also been evaluated over a set of globally representative locations and time periods. The v2.0 VJ209 collection’s record starts from February 10, 2023 (2023–041). ##### Science Data Sets The L2 VJ209 product, in Network Common Data Form (netCDF4) format, contains the following Science Data Sets (SDS): 1. 375m_Surface_Reflectance_Band_I1 2. 375m_Surface_Reflectance_Band_I2 3. 375m_Surface_Reflectance_Band_I3 4. 750m_Surface_Reflectance_Band_M1 5. 750m_Surface_Reflectance_Band_M2 6. 750m_Surface_Reflectance_Band_M3 7. 750m_Surface_Reflectance_Band_M4 8. 750m_Surface_Reflectance_Band_M5 9. 750m_Surface_Reflectance_Band_M7 10. 750m_Surface_Reflectance_Band_M8 11. 750m_Surface_Reflectance_Band_M10 12. 750m_Surface_Reflectance_Band_M11 13. land_water_mask 14. QF1_Surface_Reflectance 15. QF2_Surface_Reflectance 16. QF3_Surface_Reflectance 17. QF4_Surface_Reflectance 18. QF5_Surface_Reflectance 19. QF6_Surface_Reflectance 20. QF7_Surface_Reflectance