Level_1B_Ground_Wind_Detection_ADSR_04_09

binary record ""

field name

definition

start_of_observation_time

binary time

size: 12

Start 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"

mie_ground_correction_velocity

binary double	size: 8
Mie ground correction velocity unit: "m/s"

rayleigh_ground_correction_velocity

binary double	size: 8
Rayleigh ground correction velocity unit: "m/s"

updated_mie_ground_correction_velocity

binary uint8	size: 1
TRUE if Mie ground correction velocity is update

updated_rayleigh_ground_correction_velocity

binary uint8	size: 1
TRUE if Rayleigh ground correction velocity is update

mie_ground_fwhm

binary double	size: 8
Mie Core 2 output FWHM when applied to observation level Mie ground signal. This value is filled in when ZWC_Result_Type is set to ZWC_Mie or ZWC_Both and the Mie Core 2 algorithm has been applied. In all other cases the value is set to 0.0 unit: "ACCD pixel"

mie_ground_useful_signal

binary double	size: 8
Useful signal of observation level Mie ground signal. This value is filled in when ZWC_Result_Type is set to ZWC_Mie or ZWC_Both. In all other cases the value is set to 0.0 unit: "ACCD counts"

mie_ground_signal_to_noise_ratio

binary double	size: 8
Signal to noise ratio of observation level Mie ground signal. This value is filled in when ZWC_Result_Type is set to ZWC_Mie or ZWC_Both. In all other cases the value is set to 0.0

mie_ground_refined_signal_to_noise_ratio

binary double	size: 8
Refined signal to noise ratio of observation level Mie ground signal. This value is filled in when ZWC_Result_Type is set to ZWC_Mie or ZWC_Both. In all other cases the value is set to 0.0

rayleigh_ground_useful_signal

binary double	size: 8
Useful signal of observation level Rayleigh ground signal. This value is filled in when ZWC_Result_Type is set to ZWC_Rayleigh or ZWC_Both. In all other cases the value is set to 0.0 unit: "ACCD counts"

rayleigh_ground_signal_to_noise_ratio

binary double	size: 8
Signal to noise ratio of observation level Rayleigh ground signal. This value is filled in when ZWC_Result_Type is set to ZWC_Rayleigh or ZWC_Both. In all other cases the value is set to 0.0

mie_average_ground_wind_bin_thickness

binary double	size: 8
Average of measurement ground wind bin altitudes for Mie unit: "m"

rayleigh_average_ground_wind_bin_thickness

binary double	size: 8
Average of measurement ground wind bin altitudes for Rayleigh unit: "m"

mie_average_ground_wind_bin_thickness_above_dem

binary double	size: 8
Average ground wind bin thickness (height of the air column) above DEM intersection for Mie unit: "m"

rayleigh_average_ground_wind_bin_thickness_above_dem

binary double	size: 8
Average ground wind bin thickness (height of the air column) above DEM intersection for Rayleigh unit: "m"

validation_criteria

binary record

size: 60

Level 1B ground Wind Direction Validation Criteria

field name

definition

min_num_of_mie_ground_echo_measurements

binary uint8	size: 1
The minimum number of measurements with valid Mie ground bins detected in order to validate new ground correction factor

mie_land_useful_signal_treshold

binary double	size: 8
Threshold applied to coadded gound signal of a measurement if the surface indicates land surface. If the threshold is met, the signal is added to the sum of the ground signal on observation level unit: "ACCD counts"

mie_water_useful_signal_treshold

binary double	size: 8
Threshold applied to coadded gound signal of a measurement if the surface indicates water/sea ice surface. If the threshold is met, the signal is added to the sum of the ground signal on observation level unit: "ACCD counts"

mie_max_ground_echo_bin_thickness_above_dem

binary double	size: 8
Threshold applied to a bin identified as ground bin candidate. If the threshold is not met, the signal of the bin is not added to the sum of the ground signal on observation level unit: "m"

min_num_of_rayleigh_ground_echo_measurements

binary uint8	size: 1
The minimum number of measurements with valid Rayleigh ground bins detected in order to validate new ground correction factor

rayleigh_land_useful_signal_treshold

binary double	size: 8
Threshold applied to coadded gound signal of a measurement if the surface indicates land surface. If the threshold is met, the signal is added to the sum of the ground signal on observation level unit: "ACCD counts"

rayleigh_water_useful_signal_treshold

binary double	size: 8
Threshold applied to coadded gound signal of a measurement if the surface indicates water/sea ice surface. If the threshold is met, the signal is added to the sum of the ground signal on observation level unit: "ACCD counts"

rayleigh_max_ground_echo_bin_thickness_above_dem

binary double	size: 8
Threshold applied to a bin identified as ground bin candidate. If the threshold is not met, the signal of the bin is not added to the sum of the ground signal on observation level unit: "m"

number_of_mie_ground_bins

binary uint8	size: 1
Number of Mie measurements containing ground wind bins

number_of_rayleigh_ground_bins

binary uint8	size: 1
Number of Rayleigh measurements containing ground wind bins

spare_1

binary bytes	size: 8
Spare

hidden: true

measurement_ground_wind_detection

binary array[dim_0]

dim_0: int(/sph/n_max)

binary record size: 350

Level 1B Measurement Ground Wind Detection

id field name definition

0 mie_measurement_ground_wind_bin

binary record "Level_1B_Ground_Wind_Detection_04_03" size: 175

1 rayleigh_measurement_ground_wind_bin

binary record "Level_1B_Ground_Wind_Detection_04_03" size: 175

mie_ground_correction_weighting_factor

binary double	size: 8
Mie ground correction weighting factor

rayleigh_ground_correction_weighting_factor

binary double	size: 8
Rayleigh ground correction weighting factor

rayleigh_correction_with_mie_ground_echo_weighting_factor

binary double	size: 8
Weighting parameter for correction of Rayleigh with Mie ground echo unit: "AU"

mie_harmonic_correction_factor

binary double	size: 8
Weighting parameter for Mie harmonic correction unit: "AU"

rayleigh_harmonic_correction_factor

binary double	size: 8
Weighting parameter for Rayleigh harmonic correction unit: "AU"

rayleigh_correction_with_mie_harmonic_weighting_factor

binary double	size: 8
Weighting parameter for correction of Rayleigh with Mie harmonic unit: "AU"

mie_rayleigh_ground_correction_offset

binary double	size: 8
Offset between Mie and Rayleigh ground corrections unit: "m/s"

hbe_mie_ground_correction_velocity

binary double	size: 8
Mie ground correction velocity using harmonic bias estimation for the observation unit: "m/s"

hbe_rayleigh_ground_correction_velocity

binary double	size: 8
Rayleigh ground correction velocity using harmonic bias estimation for the observation unit: "m/s"

mie_channel_total_zero_wind_correction

binary double	size: 8
Mie channel total zero wind correction calculated for this observation unit: "m/s"

rayleigh_channel_total_zero_wind_correction

binary double	size: 8
Rayleigh channel total zero wind correction calculated for this observation unit: "m/s"

spare_1

binary bytes	size: 16
Spare

hidden: true