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_20120307T034812_20120307T041236_052403_0234_20171219T234625_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120307T102811_20120307T110045_052407_0238_20171220T005359_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120307T120833_20120307T121453_052408_0239_20171219T235216_0100 (item)
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- EN1_MDSI_MER_FRS_1P_20120308T081109_20120308T082024_052420_0251_20171220T010028_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120308T081114_20120308T083110_052420_0251_20171220T013425_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120308T081611_20120308T082746_052420_0251_20171220T011038_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120308T095442_20120308T100702_052421_0252_20171220T011815_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120308T131152_20120308T131642_052423_0254_20171220T011116_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120308T145521_20120308T150416_052424_0255_20171220T012414_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120308T182137_20120308T182440_052426_0257_20171220T012620_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120309T005928_20120309T010314_052430_0261_20171220T013432_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120309T024344_20120309T025837_052431_0262_20171220T021031_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120309T041344_20120309T043944_052432_0263_20171220T023333_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120309T130306_20120309T130957_052437_0268_20171220T022651_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120309T141940_20120309T142835_052438_0269_20171220T023244_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120309T174942_20120309T175412_052440_0271_20171220T024554_0100 (item)
- EN1_MDSI_MER_FRS_1P_20120309T192456_20120309T192609_052441_0272_20171220T024006_0100 (item)
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