JAXA Level 2 (L2) Standard Products
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| Version | Date | Update | Release Note |
|---|---|---|---|
| vBa | 2025/3/13 | Start of data provision | |
| vBb | 2025/4/22 | Cloud detection near the surface was improved. | |
| vCa | 2025/12/1 | ・Updates were made to address improvements in clutter discrimination in CPR_ECO and surface detection in ATL_CLA. ・A fully attenuated flag was added to the cloud mask. ・Cloud microphysical properties were improved to ensure consistency with the cloud optical thickness derived from MSI. ・An improved version of the Doppler velocity unfolding correction was implemented. |
|
| vCb | 2026/5/18 | ・Improved cloud microphysical properties ・Revised variable names |
| CPR_ECO |
|---|
| AUX_2DH |
| Name | Number of Pixels | Description |
|---|---|---|
| nray | 5000 | number of ray |
| nbin | 200 | number of bin |
| Variable Name | Units | Description/Attributes | Dimention | Type |
|---|---|---|---|---|
| Data | ||||
| cloud_mask_cpr_10km | - | CPR cloud mask (10km) 0: clear, 20: weak echo, 30: good echo, 40: strong echo, -4~-1: non-cloud echo (insects etc)
|
nray, nbin | int |
| cloud_mask_cpr_1km | - | CPR cloud mask (1km) 0: clear, 20: weak echo, 30: good echo, 40: strong echo, -4~-1: non-cloud echo (insects etc)
|
nray, nbin | int |
| cloud_particle_type_cpr_10km | - | CPR cloud particle type (10km) 0: clear, 1: warm water, 2: supercooled water, 3: 3D ice, 4: 2D plate, 5: liquid drizzle, 6: mixed-phase drizzle, 7: rain, 8: snow, 9: melting layer/freezing lavel, 10: non-cloud echo (insects etc) , 11: fully attenuated (CPR) (not used)
|
nray, nbin | int |
| cloud_particle_type_cpr_1km | - | CPR cloud particle type (1km) 0: clear, 1: warm water, 2: supercooled water, 3: 3D ice, 4: 2D plate, 5: liquid drizzle, 6: mixed-phase drizzle, 7: rain, 8: snow, 9: melting layer/freezing lavel, 10: non-cloud echo (insects etc) , 11: fully attenuated (CPR) (not used)
|
nray, nbin | int |
| cloud_particle_category_cpr_10km | - | CPR cloud particle category (10km) cloud particle habit categories (1: not used, 2: 2D category (2D plates and 2D columns), 3: bullet rosette/3D types (bullets/bullet rosettes, 3D aggregate category), 4: Droxtals, 5: 2-D and 3-D Voronois, 6: not used, 7: warm water, 8: liquid drizzle, 9: rain)
|
nray, nbin | int |
| cloud_particle_category_cpr_1km | - | CPR cloud particle category (1km) cloud particle habit categories (1: not used, 2: 2D category (2D plates and 2D columns), 3: bullet rosette/3D types (bullets/bullet rosettes, 3D aggregate category), 4: Droxtals, 5: 2-D and 3-D Voronois, 6: not used, 7: warm water, 8: liquid drizzle, 9: rain
|
nray, nbin | int |
| ice_effective_radius_10km | um | total ice effective radius (10km)
|
nray, nbin | float |
| ice_effective_radius_1km | um | total ice effective radius (1km)
|
nray, nbin | float |
| water_effective_radius_10km | um | total liquid effective radius (10km)
|
nray, nbin | float |
| water_effective_radius_1km | um | total liquid effective radius (1km)
|
nray, nbin | float |
| ice_water_content_10km | g/m^3 | total ice water content (10km)
|
nray, nbin | float |
| ice_water_content_1km | g/m^3 | total ice water content (1km)
|
nray, nbin | float |
| liquid_water_content_10km | g/m^3 | total liquid water content (10km)
|
nray, nbin | float |
| liquid_water_content_1km | g/m^3 | total liquid water content (1km)
|
nray, nbin | float |
| total_cloud_ice_number_concentration_10km | 1/m^3 | total ice number concentration (10km)
|
nray, nbin | float |
| total_cloud_ice_number_concentration_1km | 1/m^3 | total ice number concentration (1km)
|
nray, nbin | float |
| total_cloud_water_number_concentration_10km | 1/m^3 | total liquid number concentration (10km)
|
nray, nbin | float |
| total_cloud_water_number_concentration_1km | 1/m^3 | total liquid number concentration (1km)
|
nray, nbin | float |
| total_cloud_terminal_velocity_10km | m/s | total cloud particle terminal velocity (10km)
|
nray, nbin | float |
| total_cloud_terminal_velocity_1km | m/s | total cloud particle terminal velocity (1km)
|
nray, nbin | float |
| cloud_air_velocity_10km | m/s | vertical airmotion (10km)
|
nray, nbin | float |
| cloud_air_velocity_1km | m/s | vertical airmotion (1km)
|
nray, nbin | float |
| cloud_effective_radius1_10km | um | effective radius (cloud particle 1) (10km)
|
nray, nbin | float |
| cloud_effective_radius1_1km | um | effective radius (cloud particle 1) (1km)
|
nray, nbin | float |
| cloud_effective_radius2_10km | um | effective radius (cloud particle 2) (10km)
|
nray, nbin | float |
| cloud_effective_radius2_1km | um | effective radius (cloud particle 2) (1km)
|
nray, nbin | float |
| cloud_water_content1_10km | g/m^3 | liquid water content or ice water content (cloud particle 1) (10km)
|
nray, nbin | float |
| cloud_water_content1_1km | g/m^3 | liquid water content or ice water content (cloud particle 1) (1km)
|
nray, nbin | float |
| cloud_water_content2_10km | g/m^3 | liquid water content or ice water content (cloud particle 2) (10km)
|
nray, nbin | float |
| cloud_water_content2_1km | g/m^3 | liquid water content or ice water content (cloud particle 2) (1km)
|
nray, nbin | float |
| cloud_phase1_10km | - | cloud phase (cloud particle 1) (10km) 1: liquid phase, 2: ice phase
|
nray, nbin | int |
| cloud_phase1_1km | - | cloud phase (cloud particle 1) (1km) 1: liquid phase, 2: ice phase
|
nray, nbin | int |
| cloud_phase2_10km | - | cloud phase (cloud particle 2) (10km) 1: liquid phase, 2: ice phase
|
nray, nbin | int |
| cloud_phase2_1km | - | cloud phase (cloud particle 2) (1km) 1: liquid phase, 2: ice phase
|
nray, nbin | int |
| cloud_number_concentration1_10km | 1/m^3 | number concentration (cloud particle 1) (10km)
|
nray, nbin | float |
| cloud_number_concentration1_1km | 1/m^3 | number concentration (cloud particle 1) (1km)
|
nray, nbin | float |
| cloud_number_concentration2_10km | 1/m^3 | number concentration (cloud particle 2)(10km)
|
nray, nbin | float |
| cloud_number_concentration2_1km | 1/m^3 | number concentration (cloud particle 2) (1km)
|
nray, nbin | float |
| cloud_terminal_velocity1_10km | m/s | terminal velcocity (cloud particle 1)(10km)
|
nray, nbin | float |
| cloud_terminal_velocity1_1km | m/s | terminal velcocity (cloud particle 1) (1km)
|
nray, nbin | float |
| cloud_terminal_velocity2_10km | m/s | terminal velcocity (cloud particle 2)(10km)
|
nray, nbin | float |
| cloud_terminal_velocity2_1km | m/s | terminal velcocity (cloud particle 2) (1km)
|
nray, nbin | float |
| ice_water_path_10km | g/m^2 | ice water path (10km)
|
nray | float |
| ice_water_path_1km | g/m^2 | ice water path (1km)
|
nray | float |
| liquid_water_path_10km | g/m^2 | liquid water path (10km)
|
nray | float |
| liquid_water_path_1km | g/m^2 | liquid water path (1km)
|
nray | float |
| optical_thickness_10km | - | optical thickness (10km)
|
nray | float |
| optical_thickness_1km | - | optical thickness (1km)
|
nray | float |
| cloud_radar_reflectivity_10km | dBZe | attenuted radar reflectivity factor after cloud mask (10km) (CPR_L2a_ECO: jsg_radar_reflectivity_1km_with_correction: Both clutter and ganeous attenuation are corrected)
|
nray, nbin | float |
| cloud_radar_reflectivity_1km | dBZe | attenuated radar reflectivity factor after cloud mask (1km) (CPR_L2a_ECO: jsg_radar_reflectivity_1km_with_correction: Both clutter and ganeous attenuation are corrected)
|
nray, nbin | float |
| cloud_doppler_velocity_10km | m/s | Bias corrected Doppler Velocity after cloud mask (10km) (CPR_L2a_ECO: jsg_doppler_velocity_1km_with_correction_bias_corr)
|
nray, nbin | float |
| cloud_doppler_velocity_1km | m/s | Bias corrected Doppler Velocity after cloud mask (1km) (CPR_L2a_ECO: jsg_doppler_velocity_1km_with_correction_bias_corr)
|
nray, nbin | float |
| cloud_gasattenuation_1km | dBZe | integrated_gaseous_attenuation(1km) (CPR_L2a_ECO)
|
nray, nbin | float |
| GRID_temperature_1km | K | temperature
|
nray, nbin | float |
| GRID_pressure_1km | hPa | pressure
|
nray, nbin | float |
| GRID_relativeHumidity_1km | % | relative humidity
|
nray, nbin | float |
| GRID_specificHumidity_1km | kg/kg | specific humidity
|
nray, nbin | float |
| ice_effective_radius_10km_uncertainty | % | uncertainty (ice effective radius) (10km)
|
nray, nbin | float |
| ice_effective_radius_1km_uncertainty | % | uncertainty (ice effective radius) (1km)
|
nray, nbin | float |
| water_effective_radius_10km_uncertainty | % | uncertainty (liquid effective radius) (10km)
|
nray, nbin | float |
| water_effective_radius_1km_uncertainty | % | uncertainty (liquid effective radius) (1km)
|
nray, nbin | float |
| ice_water_content_10km_uncertainty | % | uncertainty (ice water content) (10km)
|
nray, nbin | float |
| ice_water_content_1km_uncertainty | % | uncertainty (ice water content) (1km)
|
nray, nbin | float |
| liquid_water_content_10km_uncertainty | % | uncertainty (liquid water content) (10km)
|
nray, nbin | float |
| liquid_water_content_1km_uncertainty | % | uncertainty (liquid water content) (1km)
|
nray, nbin | float |
| L2_quality_flag_10km | - | L2 quality flag (10km)
|
nray | int |
| L2_quality_flag_1km | - | L2 quality flag (1km)
|
nray | int |
| quality_flag_10km | - | quality flag (10km)
|
nray, nbin, 10 | int |
| quality_flag_1km | - | quality flag (1km)
|
nray, nbin, 10 | int |
| Geo | ||||
| day_night_flag | - | day/night flag 0: night, 1: day (CPR_L2a_ECO: day_night_flag)
|
nray | int |
| height | m | Altitude of pixels center above WGS84 ellipsoid (20km- -500m, 100m resolution)
|
nray | float |
| land_water_flag | - | land/water flag 0: water, 1: land (CPR_L2a_ECO: land_water_flag)
|
nray | int |
| latitude | degree_north | latitude (CPR_L2a_ECO: latitude)
|
nray | double |
| longitude | degree_east | longitude (CPR_L2a_ECO: longitude)
|
nray | double |
| surface_elevation | m | Terrain elevatino for JSG pixel center above WGS84 ellipsoid (CPR_L2a_ECO: surface_elevation_1km)
|
nray | float |
| time | seconds since 2000-1-1 00:00:00.0 0:00 | time (CPR_L2a_ECO: time)
|
nray | double |
| Geo/Scan_Time | ||||
| DayOfMonth | - | Day of month
|
nray | byte |
| DayOfYear | - | Day of year
|
nray | short |
| Hour | - | Hour
|
nray | byte |
| MilliSecond | - | MilliSecond
|
nray | float |
| Minute | - | Minute
|
nray | byte |
| Month | - | Month
|
nray | byte |
| Second | - | Second
|
nray | byte |
| SecondOfDay | - | Second of day
|
nray | int |
| Year | - | Year
|
nray | short |
Please reffer to the "Product Definition Document" for header information.