OMI_L3_OMNO2d
Variables
The table below lists the variables that are present in the HARP product that results from an ingestion of OMI_L3_OMNO2d data.
field name |
type |
dimensions |
unit |
description |
|---|---|---|---|---|
datetime_start |
double |
{time} |
[seconds since 2000-01-01] |
start time of the grid |
datetime_length |
double |
{time} |
[days] |
length of the grid |
longitude |
double |
{longitude} |
[degree_east] |
longitude of the grid cell mid-point (WGS84) |
latitude |
double |
{latitude} |
[degree_north] |
latitude of the grid cell mid-point (WGS84) |
NO2_column_number_density |
double |
{time, latitude, longitude} |
[molec/cm2] |
NO2 vertical column density |
tropospheric_NO2_column_number_density |
double |
{time, latitude, longitude} |
[molec/cm2] |
NO2 tropospheric column density |
index |
int32 |
{time} |
zero-based index of the sample within the source product |
Ingestion options
The table below lists the available ingestion options for OMI_L3_OMNO2d products.
option name |
legal values |
description |
|---|---|---|
no2 |
cloud_screened |
whether to ingested the unfiltered NO2 (default) or cloud screened NO2 (no2=cloud_screened) data |
Mapping description
The table below details where and how each variable was retrieved from the input product.
field name |
mapping description |
|
|---|---|---|
datetime_start |
path |
/HDFEOS/ADDITIONAL/FILE_ATTRIBUTES@TAI93At0zOfGranule |
description |
the time of the measurement converted from TAI93 to seconds since 2000-01-01T00:00:00 |
|
datetime_length |
description |
set to fixed value of 1 |
longitude |
path |
/HDFEOS/GRIDS/ColumnAmountNO2@GridSpacing, /HDFEOS/GRIDS/ColumnAmountNO2@NumberOfLongitudesInGrid |
description |
a uniformly increasing sequence on the interval (-180, 180) |
|
latitude |
path |
/HDFEOS/GRIDS/ColumnAmountNO2@GridSpacing, /HDFEOS/GRIDS/ColumnAmountNO2@NumberOfLatitudesInGrid |
description |
a uniformly increasing sequence on the interval (-90, 90) |
|
NO2_column_number_density |
condition |
no2 unset |
path |
/ColumnAmountNO2[] |
|
condition |
no2=cloud_screened |
|
path |
/ColumnAmountNO2CloudScreened[] |
|
tropospheric_NO2_column_number_density |
condition |
no2 unset |
path |
/ColumnAmountNO2Trop[] |
|
condition |
no2=cloud_screened |
|
path |
/ColumnAmountNO2TropCloudScreened[] |
|