ACE_FTS_L2_iso

Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of ACE_FTS_L2_iso data.

field name

type

dimensions

unit

description

datetime

double

{time}

[seconds since 2000-01-01]

date and time of occultation 30 km geometric tangent point

datetime_start

double

{time}

[seconds since 2000-01-01]

date and time of start of measurement

datetime_stop

double

{time}

[seconds since 2000-01-01]

date and time of end of measurement

orbit_index

int32

absolute orbit number

latitude

double

{vertical}

[degree_north]

latitude of 30 km geometric tangent point for occultation

longitude

double

{vertical}

[degree_east]

longitude of 30 km geometric tangent point for occultation

altitude

double

{vertical}

[km]

tangent altitude grid for retrieved parameters and species

temperature

double

{vertical}

[K]

temperature

pressure

double

{vertical}

[hPa]

pressure

number_density

double

{vertical}

[cm^-3]

atmospheric density

H2O_181_volume_mixing_ratio

double

{vertical}

[ppmv]

volume mixing ratio for H2O_181

H2O_181_volume_mixing_ratio_uncertainty

double

{vertical}

[ppmv]

volume mixing ratio uncertainty for H2O_181. If this value is -888 the vmr was not retrieved but obtained by scaling the a priori value

H2O_171_volume_mixing_ratio

double

{vertical}

[ppmv]

volume mixing ratio for H2O_171

H2O_171_volume_mixing_ratio_uncertainty

double

{vertical}

[ppmv]

volume mixing ratio uncertainty for H2O_171. If this value is -888 the vmr was not retrieved but obtained by scaling the a priori value

H2O_162_volume_mixing_ratio

double

{vertical}

[ppmv]

volume mixing ratio for H2O_162

H2O_162_volume_mixing_ratio_uncertainty

double

{vertical}

[ppmv]

volume mixing ratio uncertainty for H2O_162. If this value is -888 the vmr was not retrieved but obtained by scaling the a priori value

CH4_311_volume_mixing_ratio

double

{vertical}

[ppmv]

volume mixing ratio for CH4_311

CH4_311_volume_mixing_ratio_uncertainty

double

{vertical}

[ppmv]

volume mixing ratio uncertainty for CH4_311. If this value is -888 the vmr was not retrieved but obtained by scaling the a priori value

CH4_212_volume_mixing_ratio

double

{vertical}

[ppmv]

volume mixing ratio for CH4_212

CH4_212_volume_mixing_ratio_uncertainty

double

{vertical}

[ppmv]

volume mixing ratio uncertainty for CH4_212. If this value is -888 the vmr was not retrieved but obtained by scaling the a priori value

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

/date

description

date field from header section converted to seconds since 2000-01-01

datetime_start

path

/start_time

description

start_time field from header section converted to seconds since 2000-01-01

datetime_stop

path

/end_time

description

end_time field from header section converted to seconds since 2000-01-01

orbit_index

description

extracted from the filename (assuming ssXXXXX… or srXXXXX… format); set to 0 if extraction of the value was not possible

latitude

path

/latitude

description

latitude field from header section

longitude

path

/longitude

description

longitude field from header section

altitude

path

/data section/z

temperature

path

/data section/T

pressure

path

/data section/P (atm)

number_density

path

/data section/dens

H2O_181_volume_mixing_ratio

path

/data section/H2O_181

H2O_181_volume_mixing_ratio_uncertainty

path

/data section/H2O_181_err

H2O_171_volume_mixing_ratio

path

/data section/H2O_171

H2O_171_volume_mixing_ratio_uncertainty

path

/data section/H2O_171_err

H2O_162_volume_mixing_ratio

path

/data section/H2O_162

H2O_162_volume_mixing_ratio_uncertainty

path

/data section/H2O_162_err

CH4_311_volume_mixing_ratio

path

/data section/CH4_311

CH4_311_volume_mixing_ratio_uncertainty

path

/data section/CH4_311_err

CH4_212_volume_mixing_ratio

path

/data section/CH4_212

CH4_212_volume_mixing_ratio_uncertainty

path

/data section/CH4_212_err