S4-L2-SO2
Variables
The table below lists the variables that are present in the HARP product that results from an ingestion of S4-L2-SO2 data.
field name |
type |
dimensions |
unit |
description |
|---|---|---|---|---|
datetime |
double |
{time} |
[seconds since 2000-01-01] |
time of the measurement |
datetime_length |
double |
[s] |
measurement duration |
|
latitude |
float |
{time} |
[degree_north] |
pixel center latitude |
longitude |
float |
{time} |
[degree_east] |
pixel center longitude |
latitude_bounds |
float |
{time, 4} |
[degree_north] |
latitudes of pixel boundary |
longitude_bounds |
float |
{time, 4} |
[degree_north] |
latitudes of pixel boundary |
validity |
int8 |
{time} |
continuous quality descriptor, varying between 0 (no data) and 100 (full quality data) |
|
SO2_column_number_density |
float |
{time} |
[mol/m^2] |
sulphur dioxide column density |
SO2_column_number_density_uncertainty_random |
float |
{time} |
[mol/m^2] |
random error of sulphur dioxide column density |
SO2_column_number_density_uncertainty_systematic |
float |
{time} |
[mol/m^2] |
systematic error of sulphur dioxide column density |
SO2_column_number_density_amf |
float |
{time} |
[] |
total air mass factor |
SO2_column_number_density_amf_uncertainty_random |
float |
{time} |
[] |
random error of total air mass factor |
SO2_column_number_density_amf_uncertainty_systematic |
float |
{time} |
[] |
systematic error of total air mass factor |
index |
int32 |
{time} |
zero-based index of the sample within the source product |
Ingestion options
The table below lists the available ingestion options for S4-L2-SO2 products.
option name |
legal values |
description |
|---|---|---|
so2_column |
1km, 7km, 15km |
whether to ingest the anothropogenic SO2 column at the PBL (default), the SO2 column from the 1km box profile (so2_column=1km), from the 7km box profile (so2_column=7km), or from the 15km box profile (so2_column=15km) |
Mapping description
The table below details where and how each variable was retrieved from the input product.
field name |
mapping description |
|
|---|---|---|
datetime |
path |
/@time_reference_days_since_1950, /PRODUCT/delta_time[] |
description |
time reference converted from days since 1950-01-01 to seconds since 2020-01-01 (using 86400 seconds per day) and delta_time added |
|
datetime_length |
path |
/PRODUCT/delta_time[] |
description |
delta_time[num_ground_pixels] - delta_time[0] |
|
latitude |
path |
/PRODUCT/latitude[] |
longitude |
path |
/PRODUCT/longitude[] |
latitude_bounds |
path |
/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/latitude_bounds[] |
longitude_bounds |
path |
/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/longitude_bounds[] |
validity |
path |
/PRODUCT/qa_value |
SO2_column_number_density |
condition |
so2_column unset |
path |
/PRODUCT/sulfur_dioxide_total_column_polluted[] |
|
condition |
so2_column=1km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_column_1km[] |
|
condition |
so2_column=7km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_column_7km[] |
|
condition |
so2_column=15km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_column_15km[] |
|
SO2_column_number_density_uncertainty_random |
condition |
so2_column unset |
path |
/PRODUCT/sulfur_dioxide_total_column_polluted_precision[] |
|
condition |
so2_column=1km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_column_1km_precision[] |
|
condition |
so2_column=7km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_column_7km_precision[] |
|
condition |
so2_column=15km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_column_15km_precision[] |
|
SO2_column_number_density_uncertainty_systematic |
condition |
so2_column unset |
path |
/PRODUCT/sulfur_dioxide_total_column_polluted_trueness[] |
|
condition |
so2_column=1km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_column_1km_trueness[] |
|
condition |
so2_column=7km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_column_7km_trueness[] |
|
condition |
so2_column=15km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_column_15km_trueness[] |
|
SO2_column_number_density_amf |
condition |
so2_column unset |
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_air_mass_factor_polluted[] |
|
condition |
so2_column=1km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_air_mass_factor_1km[] |
|
condition |
so2_column=7km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_air_mass_factor_7km[] |
|
condition |
so2_column=15km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_air_mass_factor_15km[] |
|
SO2_column_number_density_amf_uncertainty_random |
condition |
so2_column unset |
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_air_mass_factor_polluted_precision[] |
|
condition |
so2_column=1km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_air_mass_factor_1km_precision[] |
|
condition |
so2_column=7km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_air_mass_factor_7km_precision[] |
|
condition |
so2_column=15km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_air_mass_factor_15km_precision[] |
|
SO2_column_number_density_amf_uncertainty_systematic |
condition |
so2_column unset |
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_air_mass_factor_polluted_trueness[] |
|
condition |
so2_column=1km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_air_mass_factor_1km_trueness[] |
|
condition |
so2_column=7km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_air_mass_factor_7km_trueness[] |
|
condition |
so2_column=15km |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/sulfur_dioxide_total_air_mass_factor_15km_trueness[] |
|