# AEOLUS_L2A_SCA

## Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of AEOLUS_L2A_SCA data.

field name

type

dimensions

unit

description

datetime

double

{time}

[seconds since 2000-01-01]

start time of observation

datetime_length

double

{time}

[s]

duration of the observation

orbit_index

int32

absolute orbit number

latitude

double

{time, vertical}

[degree_north]

latitude of the bin center

longitude

double

{time, vertical}

[degree_east]

longitude of the bin center

altitude

double

{time, vertical}

[m]

altitude of the bin center

extinction_coefficient

double

{time, vertical}

[(1e-6)/m]

particle extinction

extinction_coefficient_uncertainty

double

{time, vertical}

[1/m]

uncertainty of the particle extinction

backscatter_coefficient

double

{time, vertical}

[(1e-6)/m/sr]

particle backscatter

backscatter_coefficient_uncertainty

double

{time, vertical}

[1/m/sr]

uncertainty of the particle backscatter

optical_depth

double

{time, vertical}

[]

particle local optical depth

optical_depth_uncertainty

double

{time, vertical}

[]

uncertainty of the particle local optical depth

validity

int8

{time, vertical}

processing qc flag

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

/sca_optical_properties[]/starttime

datetime_length

description

set to fixed value of 12 seconds

orbit_index

path

/mph/abs_orbit

latitude

path

/sca_optical_properties[]/geolocation_middle_bins[]/latitude

longitude

path

/sca_optical_properties[]/geolocation_middle_bins[]/longitude

altitude

path

/sca_optical_properties[]/geolocation_middle_bins[]/altitude

extinction_coefficient

path

/sca_optical_properties[]/sca_optical_properties[]/extinction

extinction_coefficient_uncertainty

path

/sca_pcd[]/profile_pcd_bins[]/extinction_variance

description

the square root of the variance is taken as uncertainty

backscatter_coefficient

path

/sca_optical_properties[]/sca_optical_properties[]/backscatter

backscatter_coefficient_uncertainty

path

/sca_pcd[]/profile_pcd_bins[]/backscatter_variance

description

the square root of the variance is taken as uncertainty

optical_depth

path

/sca_optical_properties[]/sca_optical_properties[]/lod

optical_depth_uncertainty

path

/sca_pcd[]/profile_pcd_bins[]/lod_variance

description

the square root of the variance is taken as uncertainty

validity

path

/sca_pcd[]/profile_pcd_bins[]/processing_qc_flag