Arctic lightning NO2 product (2019)
<p>The dataset includes results from a combination of TROPOMI NO<sub>2</sub> measurements and GLD360 observations in the Arctic (<strong>June-August 2019</strong>). By analyzing consecutive TROPOMI NO<sub>2</sub> observations, we determine the lifetime and production efficiency of lightning NO<sub>2</sub>. A detailed description of the methodology can be found in <a href="https://doi.org/10.1021/acs.est.2c07988">Zhang et al. (2023)</a>.</p> <p><strong>Reference</strong></p> <p>Zhang et al., <strong>Spaceborne observations of lightning NO<sub>2</sub> in the Arctic</strong>, <em>Environ. Sci. Technol.</em></p> <p><strong>Date files</strong></p> <p>These NetCDF files are generated by <a href="https://github.com/zxdawn/S5P-LNO2">S5P-LNO2</a> which depends on TROPOMI NO<sub>2</sub> data and GLD360 lightning data.</p> <p>Here is the variable table of the S5P-LNO2 NetCDF product:</p> <table> <thead> <tr> <th>Varname</th> <th>Group</th> <th>Units</th> <th>Description</th> </tr> </thead> <tbody> <tr> <td>time</td> <td>S5P</td> <td>days since <yyyy-mm-dd></td> <td>time using proleptic gregorian calendar</td> </tr> <tr> <td>latitude</td> <td>S5P</td> <td>degrees_north</td> <td>pixel center latitude</td> </tr> <tr> <td>longitude</td> <td>S5P</td> <td>degrees_east</td> <td>pixel center longitude</td> </tr> <tr> <td>air_mass_factor_clear</td> <td>S5P</td> <td>1</td> <td>Air mass factor for the cloud-free part of the scene</td> </tr> <tr> <td>air_mass_factor_cloudy</td> <td>S5P</td> <td>1</td> <td>Air mass factor for the cloud-covered part of the scene</td> </tr> <tr> <td>air_mass_factor_stratosphere</td> <td>S5P</td> <td>1</td> <td>Stratospheric air mass factor</td> </tr> <tr> <td>air_mass_factor_total</td> <td>S5P</td> <td>1</td> <td>Total air mass factor</td> </tr> <tr> <td>air_mass_factor_troposphere</td> <td>S5P</td> <td>1</td> <td>Tropospheric air mass factor</td> </tr> <tr> <td>Apparent_scene_pressure</td> <td>S5P</td> <td>Pa</td> <td>Scene pressure from the cloud product</td> </tr> <tr> <td>assembled_lat_bounds</td> <td>S5P</td> <td>degrees_north</td> <td>assembled_latitude_bounds calculated by Satpy</td> </tr> <tr> <td>assembled_lon_bounds</td> <td>S5P</td> <td>degrees_east</td> <td>assembled_longitude_bounds calculated by Satpy</td> </tr> <tr> <td>Averaging_kernel</td> <td>S5P</td> <td>1</td> <td>Averaging kernel</td> </tr> <tr> <td>cloud_albedo_crb</td> <td>S5P</td> <td>1</td> <td>Cloud albedo in the cloud product</td> </tr> <tr> <td>cloud_fraction_crb_nitrogendioxide_window</td> <td>S5P</td> <td>1</td> <td>Cloud fraction at 440 nm for NO2 retrieval</td> </tr> <tr> <td>cloud_pressure_crb</td> <td>S5P</td> <td>Pa</td> <td>Cloud optical centroid pressure</td> </tr> <tr> <td>cloud_radiance_fraction_nitrogendioxide_window</td> <td>S5P</td> <td>1</td> <td>Cloud radiance fraction at 440 nm for NO2 retrieval</td> </tr> <tr> <td>Geolocation_flags</td> <td>S5P</td> <td>1</td> <td>Some flags (see ATBD)</td> </tr> <tr> <td><strong>lightning_mask</strong></td> <td>S5P</td> <td>1</td> <td><0: labeled lightning with fire; 0: no lightning; >0: labeled lightning without fire</td> </tr> <tr> <td>nitrogendioxide_ghost_column</td> <td>S5P</td> <td>mol m-2</td> <td>Ghost column NO2: modelled NO2 column below the cloud top</td> </tr> <tr> <td><strong>nitrogendioxide_segmentation</strong></td> <td>S5P</td> <td>1</td> <td>0: no high NO2; >=1: labeled high NO2</td> </tr> <tr> <td>nitrogendioxide_slant_column_density</td> <td>S5P</td> <td>mol m-2</td> <td>Stratospheric vertical column of nitrogen dioxide, derived from the TM5-MP vertical profiles</td> </tr> <tr> <td>nitrogendioxide_stratospheric_column</td> <td>S5P</td> <td>mol m-2</td> <td>Stratospheric vertical column of nitrogen dioxide, derived from the TM5-MP vertical profile</td> </tr> <tr> <td>nitrogendioxide_total_column</td> <td>S5P</td> <td>mol m-2</td> <td>Total vertical column of nitrogen dioxide derived from the total slant column and TM5 profile in stratosphere and troposphere</td> </tr> <tr> <td>nitrogendioxide_tropospheric_column</td> <td>S5P</td> <td>mol m-2</td> <td>Tropospheric vertical column of nitrogen dioxide</td> </tr> <tr> <td>processing_quality_flags</td> <td>S5P</td> <td>1</td> <td>Processing quality flags (See ATBD)</td> </tr> <tr> <td>qa_value</td> <td>S5P</td> <td>1</td> <td>Quality value</td> </tr> <tr> <td>scene_albedo</td> <td>S5P</td> <td>1</td> <td>Scene albedo in the cloud product</td> </tr> <tr> <td>snow_ice_flag</td> <td>S5P</td> <td>1</td> <td>Snow-ice mask (See ATBD)</td> </tr> <tr> <td>solar_azimuth_angle</td> <td>S5P</td> <td>degree clockwise from the North (East = 90, South = 180, West = 270)</td> <td>Solar azimuth angle at the ground pixel location on the reference ellipsoid.</td> </tr> <tr> <td>solar_zenith_angle</td> <td>S5P</td> <td>degree measured away from the vertical</td> <td>Solar zenith angle at the ground pixel location on the reference ellipsoid.</td> </tr> <tr> <td>surface_albedo_nitrogendioxide_window</td> <td>S5P</td> <td>1</td> <td>Surface albedo in the NO2 fit window</td> </tr> <tr> <td>surface_pressure</td> <td>S5P</td> <td>Pa</td> <td>Surface pressure</td> </tr> <tr> <td>time_utc</td> <td>S5P</td> <td>1</td> <td>Time of observation as ISO 8601 date-time string</td> </tr> <tr> <td>tm5_constant_a</td> <td>S5P</td> <td>Pa</td> <td>TM5 hybrid A coefficient at upper and lower interface levels</td> </tr> <tr> <td>tm5_constant_b</td> <td>S5P</td> <td>Pa</td> <td>TM5 hybrid B coefficient at upper and lower interface levels</td> </tr> <tr> <td>tm5_tropopause_layer_index</td> <td>S5P</td> <td>1</td> <td>TM5 layer index of the highest layer in the tropopause</td> </tr> <tr> <td>viewing_azimuth_angle</td> <td>S5P</td> <td>degree measured clockwise from the North (East = 90, South = 180, West = 270)</td> <td>Satellite azimuth angle at the ground pixel location on the reference ellipsoid.</td> </tr> <tr> <td>viewing_zenith_angle</td> <td>S5P</td> <td>degree measured away from the vertical</td> <td>Zenith angle of the satellite at the ground pixel location on the reference ellipsoid.</td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>cluster_label</td> <td>Lightning</td> <td>1</td> <td>Clustered lightning labeled by DBSCAN</td> </tr> <tr> <td>time</td> <td>Lightning</td> <td>minutes since</td> <td> </td> </tr> <tr> <td>longitude</td> <td>Lightning</td> <td>degrees_east</td> <td>Longitude of lightning</td> </tr> <tr> <td>latitude</td> <td>Lightning</td> <td>degrees_north</td> <td>Latitude of lightning</td> </tr> <tr> <td>delta</td> <td>Lightning</td> <td>minute</td> <td>The time difference between detected lightning and TROPOMI overpass time</td> </tr> <tr> <td>level</td> <td>Lightning</td> <td>hPa</td> <td>Pressure levels used for lightning NO2 air parcel</td> </tr> <tr> <td>longitude_pred</td> <td>Lightning</td> <td>degrees_east</td> <td>Longitude of lightning at different pressure levels predicted by ERA5 data</td> </tr> <tr> <td>latitude_pred</td> <td>Lightning</td> <td>degrees_north</td> <td>Latitude of lightning at different pressure levels predicted by ERA5 data</td> </tr> <tr> <td>lightning_label</td> <td>Lightning</td> <td>1</td> <td>Lightning label paired with lightning mask</td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>time</td> <td>Fire</td> <td>1</td> <td> </td> </tr> <tr> <td>longitude</td> <td>Fire</td> <td>degrees_north</td> <td>Longitude of fire</td> </tr> <tr> <td>latitude</td> <td>Fire</td> <td>degrees_north</td> <td>Longitude of fire</td> </tr> <tr> <td>type</td> <td>Fire</td> <td>1</td> <td>Fire type</td> </tr> </tbody> </table>
ShareScore
12/100
Overall dataset sharing score