ESACCI_OZONE_L2_NP

Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of ESACCI_OZONE_L2_NP data.

field name

type

dimensions

unit

description

scan_subindex

int16

{time}

zero-based index of the instantaneous field of view within the swath

datetime

double

{time}

[hours since 2000-01-01]

time of the measurement

longitude

float

{time}

[degree_east]

longitude of the ground pixel center

latitude

float

{time}

[degree_north]

latitude of the ground pixel center

longitude_bounds

float

{time, 4}

[degree_east]

longitudes of the ground pixel corners

latitude_bounds

float

{time, 4}

[degree_north]

latitudes of the ground pixel corners

sensor_zenith_angle

float

{time}

[degree]

zenith angle of the sensor at the ground pixel center

solar_zenith_angle

float

{time}

[degree]

zenith angle of the Sun at the ground pixel center

pressure

float

{vertical}

[hPa]

pressure

O3_number_density

float

{time, vertical}

[molec/cm3]

O3 number density

O3_number_density_uncertainty

float

{time, vertical}

[molec/cm3]

uncertainty of the O3 number density

O3_number_density_covariance

float

{time, vertical, vertical}

[(molec/cm3)2]

O3 number density solution covariance matrix

O3_number_density_avk

float

{time, vertical, vertical}

[]

O3 number density averaging kernel

O3_volume_mixing_ratio

float

{time, vertical}

[ppv]

O3 volume mixing ratio

O3_volume_mixing_ratio_uncertainty

float

{time, vertical}

[ppv]

uncertainty of the O3 volume mixing ratio

O3_volume_mixing_ratio_apriori

float

{time, vertical}

[ppv]

O3 volume mixing ratio apriori

O3_volume_mixing_ratio_apriori_uncertainty

float

{time, vertical}

[ppv]

uncertainty of the O3 volume mixing ratio apriori

cloud_fraction

double

{time}

[]

effective cloud fraction

cloud_top_pressure

double

{time}

[hPa]

cloud top pressure

cloud_top_albedo

double

{time}

[]

cloud top albedo

surface_albedo

float

{time}

[]

surface albedo

surface_pressure

float

{time}

[hPa]

surface pressure

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

scan_subindex

path

/scp[]

datetime

path

/@Data_date, /time[]

description

datetime converted from the epoch of the product and an offset in hours to hours since 2000-01-01

longitude

path

/lon[]

latitude

path

/lat[]

longitude_bounds

path

/ll[]

description

longitudes and latitudes of the ground pixel corners are stored interleaved; longitudes are ingested as [ll[,1], ll[,3], ll[,7], ll[,5]]; note the reordering of the last two values to ensure a simple polygon

latitude_bounds

path

/ll[]

description

longitudes and latitudes of the ground pixel corners are stored interleaved; latitudes are ingested as [ll[,0], ll[,2], ll[,6], ll[,4]]; note the reordering of the last two values to ensure a simple polygon

sensor_zenith_angle

path

/lza[]

solar_zenith_angle

path

/sza[]

pressure

path

/levs[]

O3_number_density

path

/o3_nd[]

O3_number_density_uncertainty

path

/o3_nd[], /o3_error[]

description

derived from the relative error in percent as: o3_error[] * 0.01 * o3_nd[]

O3_number_density_covariance

path

/sx[]

O3_number_density_avk

path

/ak[]

O3_volume_mixing_ratio

path

/o3_vmr[]

O3_volume_mixing_ratio_uncertainty

path

/o3_vmr[], /o3_error[]

description

derived from the relative error in percent as: o3_error[] * 0.01 * o3_vmr[]

O3_volume_mixing_ratio_apriori

path

/o3_ap[]

O3_volume_mixing_ratio_apriori_uncertainty

path

/o3_ap[], /o3_ap_error[]

description

derived from the relative error in percent as: o3_ap_error[] * 0.01 * o3_ap[]

cloud_fraction

path

/cloudf[]

cloud_top_pressure

path

/cloudp[]

cloud_top_albedo

path

/clouda[]

surface_albedo

path

/salb[]

surface_pressure

path

/spres[]