Level_2A_Geolocation_ADSR_02_02

binary record "Level_2A_Geolocation_ADSR_02_02"
idfield namedefinition
0start_of_observation_time
binary timesize: 12
Start time at start of BRC

unit: "s since 2000-01-01"

value: float(./days) * 86400 + float(./seconds) + float(./microseconds) / 1000000
binary recordsize: 12
ENVISAT binary datetime

idfield namedefinition
0days
binary int32size: 4
days since January 1st, 2000 (may be negative)

unit: "days since 2000-01-01"
1seconds
binary uint32size: 4
seconds since start of day

unit: "s"
2microseconds
binary uint32size: 4
microseconds since start of second

unit: "1e-6 s"
1n_prof_actual
binary int16size: 2
Number of meaningful set of optical profiles reported in this BRC. Note this figure may vary from one BRC to the other but will not exceed Max_Num_Prof
2profile_geolocation
binary array[dim_0]
dim_0: int(../n_prof_actual)
binary recordsize: 1452
List of profile geolocations. This list contains the geolocations of the Max_Num_Prof possible profiles pertaining to the observation

idfield namedefinition
0profile_height_bin_geolocation
binary array[24]size: 1440
binary recordsize: 60
List geolocation parameters of the 24 height bins of the profile

idfield namedefinition
0latitude_start
binary int32 (double)size: 4
Latitude of the start point of the profile height bin

unit: "1e-6 degrees_north"

converted unit: "degrees_north" (multiply by 1/1000000)
1latitude_stop
binary int32 (double)size: 4
Latitude of end point of the profile height bin

unit: "1e-6 degrees_north"

converted unit: "degrees_north" (multiply by 1/1000000)
2latitude_cog
binary int32 (double)size: 4
Latitude of the center-of-gravity point of the profile height bin

unit: "1e-6 degrees_north"

converted unit: "degrees_north" (multiply by 1/1000000)
3longitude_start
binary int32 (double)size: 4
Longitude of the start point of the profile height bin

unit: "1e-6 degrees_east"

converted unit: "degrees_east" (multiply by 1/1000000)
4longitude_stop
binary int32 (double)size: 4
Longitude of the end point of the profile height bin

unit: "1e-6 degrees_east"

converted unit: "degrees_east" (multiply by 1/1000000)
5longitude_cog
binary int32 (double)size: 4
Longitude of the center-of-gravity point of the profile height bin

unit: "1e-6 degrees_east"

converted unit: "degrees_east" (multiply by 1/1000000)
6altitude_bottom
binary int32size: 4
Bottom altitude of the height bin. The altitude is reference to a geoid. It is rounded to the nearest integer

unit: "m"
7altitude_top
binary int32size: 4
Top altitude of the height bin. The altitude is reference to a geoid. It is rounded to the nearest integer

unit: "m"
8altitude_cog
binary int32size: 4
Altitude of the center-of-gravity of the height bin. The altitude is reference to a geoid. It is rounded to the nearest integer

unit: "m"
9los_azimuth
binary doublesize: 8
Azimuth of the target-to-satellite pointing vector

unit: "degrees"
10los_elevation
binary doublesize: 8
Elevation of the target-to-satellite pointing vector

unit: "degrees"
11los_satellite_velocity
binary doublesize: 8
Line-of-sight velocity of the satellite

unit: "m"
1latitude_of_dem_intersection
binary int32 (double)size: 4
Latitude of the intersection of the DEM and the line-ofsight

unit: "1e-6 degrees_north"

converted unit: "degrees_north" (multiply by 1/1000000)
2longitude_of_dem_intersection
binary int32 (double)size: 4
Longitude of the intersection of the DEM and the line-ofsight

unit: "1e-6 degrees_east"

converted unit: "degrees_east" (multiply by 1/1000000)
3altitude_of_dem_intersection
binary int32size: 4
Altitude relative to the geoid of the intersection of the DEM and the line-of-sight

unit: "m"
3wgs84_to_geoid_altitude
binary int32size: 4
Difference between the altitude of the DEM intersection relative to the WGS84 ellipsoid and the geoid retained for L2B product altitude assignment. It is assumed this difference is valid for the whole profile. A positive difference indicates the geoid is below the WGS84. The difference is rounded to the nearest integer

unit: "m"