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[] |