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: MT1_L2-UTH-SAPSL1A2-1.06_2015-01-01T13-52-31_V2-00.hdf
Geolocation_Fields/POSIX_Date_Scan dataset attributes
| Dataset attribute | DataType | Dimensions | Value |
| units | string | 1 | second |
| long_name | string | 1 | POSIX_Date_Scan |
| HDF_Calibration_Equation | string | 1 | physical_value = scale_factor*(SDS_count - add_offset) |
| Missing_Output | float64 | 1 | 99999.0 |
| QA_SDS | string | 1 | QUALITY_FLAG |
| Comments | string | 1 | Date of the first pixel of the scan: number of seconds that have elapsed since 00:00:00 Coordinated Universal Time (UTC), 1 January 1970 |
| _FillValue | float64 | 1 | -99999.0 |
| scale_factor | float64 | 1 | 1.0 |
| scale_factor_err | float64 | 1 | 0.0 |
| add_offset | float64 | 1 | 0.0 |
| add_offset_err | float64 | 1 | 0.0 |
| calibrated_nt | int32 | 1 | 6 |
