Envisat MERIS Full Resolution - Level 1 [MER_FRS_1P/ME_1_FRG]
The MERIS Level 1 Full Resolution (FR) product contains the Top of Atmosphere (TOA) upwelling spectral radiance measures. The in-band reference irradiances for the 15 MERIS bands are computed by averaging the in-band solar irradiance of each pixel. The in-band solar irradiance of each pixel is computed by integrating the reference solar spectrum with the band-pass of each pixel. The MERIS FR Level 1 product has Sentinel 3-like format starting from the 4th reprocessing data released to users in July 2020. Each measurement and annotation data file is in NetCDF 4. The Level 1 product is composed of 22 data files: 15 files containing radiances at each band (one band per file), accompanied by the associated error estimates, and 7 annotation data files. The 15 sun spectral flux values provided in the instrument data file of the Level 1 products are the in-band reference irradiances adjusted for the Earth-sun distance at the time of measurement. The band-pass of each pixel is derived from on-ground and in-flight characterisation via an instrument model. The values "Band wavelength" and "Bandwidth" provided in the Manifest file of the Level 1b products are the averaged band-pass of each pixel over the instrument field of view. Auxiliary data are also listed in the Manifest file associated to each product. The Level 1 FR product covers the complete instrument swath. The product duration is not fixed and it can span up to the time interval of the input Level 0 (for a maximum of 20 minutes). Thus the estimated size of the Level 1 FR is dependent on the start/stop time of the acquired segment. During the Envisat mission, acquisition of MERIS Full Resolution data was subject to dedicated planning based on on-demand ordering and coverage of specific areas according to operational recommendations and considerations. See yearly and global density maps to get a better overview of the MERIS FR coverage.
Links
- MERIS auxiliary data - Auxiliary Data (describedby)
- MERIS Sentinel3-like L1/L2 Product Format Specification - Product Specifications (describedby)
- MERIS 4th Data Reprocessing Information - Product Specifications (describedby)
- More MERIS Documents - Other (describedby)
- MERIS Software and Tools - Tools (describedby)
- Envisat mission - Description of Envisat mission (describedby)
- MERIS instrument - Description of MERIS instrument (describedby)
- Newest First - Envisat MERIS (describedby)
- ENVISAT Software tools - Software Tools (describedby)
- Get Help? - ESA Earth Observation User Services Portal (describedby)
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- EN1_MDSI_MER_FRS_1P_20120225T211159_20120225T211613_052255_0086_20171219T083430_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120226T031930_20120226T033754_052259_0090_20171219T090901_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120226T081554_20120226T083321_052262_0093_20171219T093836_0100 (item)
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- EN1_MDSI_MER_FRS_1P_20120227T041829_20120227T043953_052274_0105_20171219T104106_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120227T074412_20120227T075250_052276_0107_20171219T102033_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120227T092135_20120227T093455_052277_0108_20171219T105023_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120227T105922_20120227T113026_052278_0109_20171219T112312_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120227T160114_20120227T161009_052281_0112_20171219T105211_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120227T161009_20120227T161312_052281_0112_20171219T103829_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120227T174032_20120227T174927_052282_0113_20171219T110514_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120227T174927_20120227T175148_052282_0113_20171219T104433_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120227T175136_20120227T175646_052282_0113_20171219T105153_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120228T052147_20120228T054348_052289_0120_20171219T115918_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120228T070202_20120228T070822_052290_0121_20171219T112243_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120228T084223_20120228T085900_052291_0122_20171219T114620_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120228T084224_20120228T084954_052291_0122_20171219T113908_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120228T084612_20120228T085816_052291_0122_20171219T114911_0100 (item)
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