Product definition document:
PDD_SAP_L2-UTH_V1_R4.pdf (updated in November 2015)Version history:
Version 1.00: Released October 2013. Original versionVersion 1.01: Released May 2014. The BT-to-UTH retrieval is performed after correction of the limb effect on the BTs. For this correction, the measured BTs at a given incident angle are redefined at an equivalent nadir viewing geometry, from a look-up-table. In V1.00 a step of 5° in incidence angle was used, whereas in the current V1.01 a step of 2° has been preferred.
Version 2.00: Released January 2015. Added UTH uncertainty. Minor format corrections.
File description: SAPHIR-L2-UTH
Product file format: HDF4
Product datasets
| Dataset | DataType | Dimensions | units | valid_range | scale_factor | add_offset | _FillValue | Missing_Output | long_name |
| Beginning of group : Geolocation_Fields | |||||||||
| POSIX_Date_Scan | float64 | [nscan] | second | NONE | 1.0 | 0.0 | -99999.0 | 99999.0 | POSIX_Date_Scan |
| UTC_Date_Scan | struct | [4180] | NONE | NONE | NONE | NONE | NONE | NONE | NONE |
| Latitude | float32 | [nscan, npix] |
deg | [-90.0, 90.0] | 1.0 | 0.0 | -99999.0 | 99999.0 | Latitude |
| Longitude | float32 | [nscan, npix] |
deg | [0.0, 360.0] | 1.0 | 0.0 | -99999.0 | 99999.0 | Longitude |
| End of group : Geolocation_Fields | |||||||||
| Beginning of group : Data_Fields | |||||||||
| QUALITY_FLAG | uint8 | [nscan, npix] |
None | [0, 1] | 1.0 | 0.0 | 255 | 254 | QUALITY_FLAG |
| FLAG_HONG | uint8 | [nscan, npix] |
None | [0, 1] | 1.0 | 0.0 | 255 | 254 | FLAG_HONG |
| UTH | float32 | [nscan, npix, nlayer] |
% | [0.0, 100.0] | 1.0 | 0.0 | -99999.0 | 99999.0 | UTH |
| Error_Standard_Deviation | float32 | [nscan, npix, nlayer] |
% | [0.0, 100.0] | 1.0 | 0.0 | -99999.0 | 99999.0 | Error_Standard_Deviation |
| End of group : Data_Fields | |||||||||
Product global attributes
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