| id | field name | definition |
|---|
| 0 | start_of_observation_time |
| binary time | size: 12 |
|---|
Satellite time at start of BRC
unit: "s since 2000-01-01"
value: float(./days) * 86400 + float(./seconds) + float(./microseconds) / 1000000
| binary record | size: 12 |
|---|
ENVISAT binary datetime
| id | field name | definition |
|---|
| 0 | days |
| binary int32 | size: 4 |
|---|
days since January 1st, 2000 (may be negative)
unit: "days since 2000-01-01"
|
|
| 1 | seconds |
| binary uint32 | size: 4 |
|---|
seconds since start of day
unit: "s"
|
|
| 2 | microseconds |
| binary uint32 | size: 4 |
|---|
microseconds since start of second
unit: "1e-6 s"
|
|
|
|
|
| 1 | num_of_reference_pulses |
| binary uint32 | size: 4 |
|---|
|
P = Number of Reference Pulses per BRC, where P ranges from 3 to 1003
|
|
| 2 | spare_1 |
| binary bytes | size: 4 |
|---|
|
Spare
|
hidden: true
|
| 3 | mie_reference_pulse |
| binary array[dim_0, 20] |
|---|
List of coadded Mie reference pulses for the measurements. Second dimension is an array of 20 pixel values where first 2 values are the pre-pixel of the ACCD. The 16 following pixels collects the useful signals, and the last two pixels are used to correct the offset of the detection chain
dim_0: int(/sph/n_max)
| binary uint16 | size: 2 |
|---|
|
pixel value
|
|
|
| 4 | rayleigh_reference_pulse_a |
| binary array[dim_0] |
|---|
List of coadded signal of Rayleigh reference pulses for channel A
dim_0: int(/sph/n_max)
| binary double | size: 8 |
|---|
|
Reference pulses corrected for detection chain offset and co-added to measurement level
|
|
|
| 5 | rayleigh_reference_pulse_b |
| binary array[dim_0] |
|---|
List of coadded signal of Rayleigh reference pulses for channel B
dim_0: int(/sph/n_max)
| binary double | size: 8 |
|---|
|
Reference pulses corrected for detection chain offset and co-added to measurement level
|
|
|
| 6 | mie_measurement_data |
| binary array[dim_0, 25, 20] |
|---|
In LiDAR mode, array of Mie spectrometer counts by 20 columns representing spatial indices. In Imaging mode, array of Mie spectrometer counts by 16 columns.
dim_0: int(/sph/n_max)
| binary int16 | size: 2 |
|---|
|
Spectrometer counts
|
|
|
| 7 | mie_time_delays |
| binary record | size: 100 |
|---|
Mie Time Delays
| id | field name | definition |
|---|
| 0 | bin_layer_integration_time |
| binary array[24] | size: 96 |
|---|
| binary int32 | size: 4 |
|---|
|
Individual time delay for each layer (24 bins)
|
|
|
| 1 | background_integration_time |
| binary int32 | size: 4 |
|---|
|
Duration of background integration time
|
|
|
|
| 8 | rayleigh_time_delays |
| binary record | size: 100 |
|---|
Rayleigh Time Delays
| id | field name | definition |
|---|
| 0 | bin_layer_integration_time |
| binary array[24] | size: 96 |
|---|
| binary int32 | size: 4 |
|---|
|
Individual time delay for each layer (bin)
|
|
|
| 1 | background_integration_time |
| binary int32 | size: 4 |
|---|
|
Duration of background integration time
|
|
|
|
| 9 | measurement_validity_indicator |
| binary array[dim_0] |
|---|
dim_0: int(/sph/n_max)
| binary record | size: 5 |
|---|
Level 1B Measurement Validity Indicator
| id | field name | definition |
|---|
| 0 | measurement_data_present |
| binary uint8 | size: 1 |
|---|
|
TRUE = Measurement data is present in BRC. SID (measurement index + 4) missing
|
|
| 1 | mie_measurement_sp_valid |
| binary uint8 | size: 1 |
|---|
|
TRUE = Mie Measurement Source Packet Valid
|
|
| 2 | rayleigh_measurement_sp_valid |
| binary uint8 | size: 1 |
|---|
|
TRUE = Rayleigh Measurement Source Packet Valid
|
|
| 3 | measurement_laser_freq_locked |
| binary uint8 | size: 1 |
|---|
|
TRUE = Number of Lasaer frequency locked is over Meas_Caity_Locked_status_Thresh (from processing paramenters file); FALSE = otherwise
|
|
| 4 | spacecraft_attitude_on_target |
| binary uint8 | size: 1 |
|---|
|
TRUE = AOCS status indicates the spacecraft was in a stable state during any part of the measurement, as determined by AOCS status samples (SID1) falling within measurement interval
|
|
|
|
|