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
Data_Fields/FLAG_HONG dataset attributes
| Dataset attribute | DataType | Dimensions | Value |
| units | string | 1 | None |
| long_name | string | 1 | FLAG_HONG |
| HDF_Calibration_Equation | string | 1 | physical_value = scale_factor*(SDS_count - add_offset) |
| Missing_Output | int32 | 1 | 254 |
| QA_SDS | string | 1 | QUALITY_FLAG |
| actual_range | int32 | 2 | [0, 1] |
| Num_Fill | int32 | 1 | 0 |
| Num_Missing_Output | int32 | 1 | 0 |
| Num_Valid | int32 | 1 | 543400 |
| Physical_Range | float64 | 2 | [0.0, 1.0] |
| Comments | string | 1 | Hong flag, by reference to the Hong et al (2005) paper for the detection of the convective overshooting clouds and of the deep convective clouds, which has been adapted to the SAPHIR specificities (0=false: no detection, 1=true: a deep convective/an overshoot is detected). |
| valid_range | uint8 | 2 | [0, 1] |
| _FillValue | uint8 | 1 | 255 |
| 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 | 21 |
