ECA_ATL_ALD_2A

Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of ECA_ATL_ALD_2A data.

field name

type

dimensions

unit

description

datetime

double

{time}

[seconds since 2000-01-01]

UTC time

latitude

double

{time}

[degree_north]

Geodetic latitude

longitude

double

{time}

[degree_east]

Geodetic longitude

orbit_index

int32

absolute orbit number

altitude_bounds

float

{time, vertical, 2}

[m]

aerosol layer base and top

aerosol_optical_depth

float

{time, vertical}

[]

aerosol layer optical thickness 355nm

aerosol_optical_depth_uncertainty

float

{time, vertical}

[]

aerosol layer optical thickness 355nm error

aerosol_extinction_coefficient

float

{time, vertical}

[1/m]

aerosol layer mean extinction 355nm

aerosol_extinction_coefficient_uncertainty

float

{time, vertical}

[1/m]

aerosol layer mean extinction 355nm error

aerosol_backscatter_coefficient

float

{time, vertical}

[1/m/sr]

aerosol layer mean backscatter 355nm

aerosol_backscatter_coefficient_uncertainty

float

{time, vertical}

[1/m/sr]

aerosol layer mean backscatter 355nm error

lidar_ratio

float

{time, vertical}

[sr]

aerosol layer mean lidar ratio 355nm

lidar_ratio_uncertainty

float

{time, vertical}

[sr]

aerosol layer mean lidar ratio 355nm error

linear_depolarization_ratio

float

{time, vertical}

[]

aerosol layer mean depolarization ratio 355nm

linear_depolarization_ratio_uncertainty

float

{time, vertical}

[]

aerosol layer mean depolarization ratio 355nm error

validity

int8

{time}

quality status

wavelength

float

[nm]

lidar wavelength

index

int32

{time}

zero-based index of the sample within the source product

Mapping description

The table below details where and how each variable was retrieved from the input product.

field name

mapping description

datetime

path

/ScienceData/time

latitude

path

/ScienceData/latitude

longitude

path

/ScienceData/longitude

orbit_index

path

/HeaderData/VariableProductHeader/MainProductHeader/orbitNumber

altitude_bounds

path

/ScienceData/aerosol_layer_base, /ScienceData/aerosol_layer_top, /ScienceData/geoid_offset

description

altitude_bounds[i,j,0] = aerosol_layer_base[i,j] + geoid_offset[i]; altitude_bounds[i,j,1] = aerosol_layer_top[i,j] + geoid_offset[i]

aerosol_optical_depth

path

/ScienceData/aerosol_layer_optical_thickness_355nm

aerosol_optical_depth_uncertainty

path

/ScienceData/aerosol_layer_optical_thickness_355nm_error

aerosol_extinction_coefficient

path

/ScienceData/aerosol_layer_mean_extinction_355nm

aerosol_extinction_coefficient_uncertainty

path

/ScienceData/aerosol_layer_mean_extinction_355nm_error

aerosol_backscatter_coefficient

path

/ScienceData/aerosol_layer_mean_backscatter_355nm

aerosol_backscatter_coefficient_uncertainty

path

/ScienceData/aerosol_layer_mean_backscatter_355nm_error

lidar_ratio

path

/ScienceData/aerosol_layer_mean_lidar_ratio_355nm

lidar_ratio_uncertainty

path

/ScienceData/aerosol_layer_mean_lidar_ratio_355nm_error

linear_depolarization_ratio

path

/ScienceData/aerosol_layer_mean_depolarisation_355nm

linear_depolarization_ratio_uncertainty

path

/ScienceData/aerosol_layer_mean_depolarisation_355nm_error

validity

path

/ScienceData/quality_status

wavelength

description

set to fixed value of 355nm