JAXA Level 2 (L2) Standard Products

Data Access

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Version History

Version Date Update Release Note
vBa 2025/3/13 Start of data provision PDF
vBb 2025/4/22 Cloud detection near the surface was improved. PDF
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.		 PDF

Input Data

CPR_ECO
CPR_CLP
ATL_CLA
AUX_2DH

Dimension

Name Number of Pixels Description
nray 5000 number of ray
nbin 200 number of bin

Variables

ScienceData
Variable Name Units Description/Attributes Dimention Type
Data   　 　
cloud_air_velocity_10km m/s Air vertical velocity (10km)
attribute
 nray, nbin float
cloud_air_velocity_1km m/s Air vertical velocity (1km)
attribute
 nray, nbin float
cloud_doppler_velocity_10km m/s Cloud Doppler velocity (10km)
attribute
 nray, nbin float
cloud_doppler_velocity_1km m/s Cloud Doppler velocity (1km)
attribute
 nray, nbin float
cloud_effective_radius1_10km micro m Cloud effective radius (cloud particle)(10km)
attribute
 nray, nbin float
cloud_effective_radius1_1km micro m Cloud effective radius (cloud particle)(1km)
attribute
 nray, nbin float
cloud_effective_radius2_10km micro m Cloud effective radius (precipitation particle)(10km)
attribute
 nray, nbin float
cloud_effective_radius2_1km micro m Cloud effective radius (precipitation particle)(1km)
attribute
 nray, nbin float
cloud_gasattenuation_1km dBZ Gas attenuation (1km)
attribute
 nray, nbin float
cloud_ice_content_10km g/m^3 Ice water content (10km)
attribute
 nray, nbin float
cloud_ice_content_10km_uncertainty % Uncertainty in ice water content (10km)
attribute
 nray, nbin float
cloud_ice_content_1km g/m^3 Ice water content (1km)
attribute
 nray, nbin float
cloud_ice_content_1km_uncertainty % Uncertainty in ice water content (1km)
attribute
 nray, nbin float
cloud_ice_effective_radius_10km micro m Cloud effective radius (ice, 10km)
attribute
 nray, nbin float
cloud_ice_effective_radius_10km_uncertainty % Uncertainty in cloud effective radius (ice, 10km)
attribute
 nray, nbin float
cloud_ice_effective_radius_1km um Cloud effective radius (ice, 1km)
attribute
 nray, nbin float
cloud_ice_effective_radius_1km_uncertainty % Uncertainty in cloud effective radius (ice, 1km)
attribute
 nray, nbin float
cloud_ice_water_path_10km g/m^2 Ice water path (10km)
attribute
 nray float
cloud_ice_water_path_1km g/m^2 Ice water path (1km)
attribute
 nray float
cloud_mask_cpr_atlid_10km - CPR cloud mask (10km)
0: clear, 20: weak echo, 30: good echo, 40: strong echo
attribute
 nray, nbin byte
cloud_mask_cpr_atlid_1km - CPR cloud mask (1km)
0: clear, 20: weak echo, 30: good echo, 40: strong echo
attribute
 nray, nbin byte
cloud_number_concentration1_10km 1/m^3 Cloud number concentration (cloud particle)(10km)
attribute
 nray, nbin float
cloud_number_concentration1_1km 1/m^3 Cloud number concentration (cloud particle)(1km)
attribute
 nray, nbin float
cloud_number_concentration2_10km 1/m^3 Cloud number concentration (precipitation particle)(10km)
attribute
 nray, nbin float
cloud_number_concentration2_1km 1/m^3 Cloud number concentration (precipitation particle)(1km)
attribute
 nray, nbin float
cloud_particle_category_atlid_10km - ATLID cloud particle category (10km)
attribute
 nray, nbin int
cloud_particle_category_atlid_1km - ATLID cloud particle category (1km)
attribute
 nray, nbin int
cloud_particle_category_cpr_atlid_10km - CPR cloud particle category (10km)
attribute
 nray, nbin int
cloud_particle_category_cpr_atlid_1km - CPR cloud particle category (1km)
attribute
 nray, nbin int
cloud_particle_type_atlid_10km - ATLID 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
attribute
 nray, nbin byte
cloud_particle_type_atlid_1km - ATLID 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
attribute
 nray, nbin byte
cloud_particle_type_cpr_atlid_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
attribute
 nray, nbin byte
cloud_particle_type_cpr_atlid_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
attribute
 nray, nbin byte
cloud_phase1_10km - Cloud phase (cloud particle)(10km)
0: not retrieved, 1: liquid, 2: ice, (-9) clear
attribute
 nray, nbin byte
cloud_phase1_1km - Cloud phase (cloud particle)(1km)
0: not retrieved, 1: liquid, 2: ice, (-9) clear
attribute
 nray, nbin byte
cloud_phase2_10km - Cloud phase (precipitation particle)(10km)
0: not retrieved, 1: liquid, 2: ice, (-9) clear
attribute
 nray, nbin byte
cloud_phase2_1km - Cloud phase (precipitation particle)(1km)
0: not retrieved, 1: liquid, 2: ice, (-9) clear
attribute
 nray, nbin byte
cloud_radar_reflectivity_10km dBZ Attenuated radar reflectivity factor (10km)
attribute
 nray, nbin float
cloud_radar_reflectivity_1km dBZ Attenuated radar reflectivity factor (1km)
attribute
 nray, nbin float
cloud_terminal_velocity1_10km m/s Cloud terminal velocity (cloud particle)(10km)
attribute
 nray, nbin float
cloud_terminal_velocity1_1km m/s Cloud terminal velocity (cloud particle)(1km)
attribute
 nray, nbin float
cloud_terminal_velocity2_10km m/s Cloud terminal velocity (precipitation particle)(10km)
attribute
 nray, nbin float
cloud_terminal_velocity2_1km m/s Cloud terminal velocity (precipitation particle)(1km)
attribute
 nray, nbin float
cloud_water_content1_10km g/m^3 Cloud water content (cloud particle)(10km)
attribute
 nray, nbin float
cloud_water_content1_1km g/m^3 Cloud water content (cloud particle)(1km)
attribute
 nray, nbin float
cloud_water_content2_10km g/m^3 Cloud water content (precipitation particle)(10km)
attribute
 nray, nbin float
cloud_water_content2_1km g/m^3 Cloud water content (precipitation particle)(1km)
attribute
 nray, nbin float
cloud_water_content_10km g/m^3 Cloud water content (10km)
attribute
 nray, nbin float
cloud_water_content_10km_uncertainty % Uncertainty in cloud water content (10km)
attribute
 nray, nbin float
cloud_water_content_1km g/m^3 Cloud water content (1km)
attribute
 nray, nbin float
cloud_water_content_1km_uncertainty % Uncertainty in cloud water content (1km)
attribute
 nray, nbin float
cloud_water_effective_radius_10km micro m Effective radius of liquid water cloud (10km)
attribute
 nray, nbin float
cloud_water_effective_radius_10km_uncertainty % Uncertainty in effective radius of liquid water cloud (10km)
attribute
 nray, nbin float
cloud_water_effective_radius_1km micro m Effective radius of liquid water cloud (1km)
attribute
 nray, nbin float
cloud_water_effective_radius_1km_uncertainty % Uncertainty in effective radius of liquid water cloud (1km)
attribute
 nray, nbin float
cloud_water_path_10km g/m^2 Liquid water path (10km)
attribute
 nray float
cloud_water_path_1km g/m^2 Liquid water path (1km)
attribute
 nray float
GRID_pressure_1km Pa Pressure (1km)
attribute
 nray, nbin float
GRID_relativeHumidity_1km % Relative Humidity (1km)
attribute
 nray, nbin float
GRID_specificHumidity_1km kg/kg Specific Humidity (1km)
attribute
 nray, nbin float
GRID_temperature_1km K Temperature (1km)
attribute
 nray, nbin float
L2_quality_flag_10km - L2 quality flag method (10km)
attribute
 nray int
L2_quality_flag_1km - L2 quality flag method (1km)
attribute
 nray int
optical_thickness_10km - Optical thickness for water and ice clouds (10km)
attribute
 nray float
optical_thickness_1km - Optical thickness for water and ice clouds (1km)
attribute
 nray float
quality_flag_10km - Quality flag (10km)
attribute
 nray, nbin, 10 short
quality_flag_1km - Quality flag (1km)
attribute
 nray, nbin, 10 short
radar_lider_flag_10km - CPR-ATLID mask flag (10km)
1: CPR only, 2: ATLID only, 3: CPR and ATLID
attribute
 nray, nbin byte
radar_lider_flag_1km - CPR-ATLID mask flag (1km)
1: CPR only, 2: ATLID only, 3: CPR and ATLID
attribute
 nray, nbin byte
total_cloud_ice_number_concentration_10km 1/m^3 Total cloud ice number concentration (10km)
attribute
 nray, nbin float
total_cloud_ice_number_concentration_1km g/m^3 Total cloud ice number concentration (1km)
attribute
 nray, nbin float
total_cloud_terminal_velocity_10km m/s Sedimentation velocity (10km)
attribute
 nray, nbin float
total_cloud_terminal_velocity_1km m/s Sedimentation velocity (1km)
attribute
 nray, nbin float
total_cloud_water_number_concentration_10km 1/m^3 Total cloud water number concentration (10km)
attribute
 nray, nbin float
total_cloud_water_number_concentration_1km 1/m^3 Total cloud water number concentration (1km)
attribute
 nray, nbin float
Geo   　 　
day_night_flag - Day/night flag
0: night, 1: day
attribute
 nray byte
height m Altitude of pixels center above WGS84 ellipsoid
attribute
 nray float
land_water_flag - Land/water flag
0: water, 1: land
attribute
 nray byte
latitude degree_north Latitude
attribute
 nray double
longitude degree_east Longitude
attribute
 nray double
surface_elevation m Terrain elevatino for JSG pixel center above WGS84 ellipsoid
attribute
 nray float
time seconds since 2000-1-1 00:00:00.0 0:00 Time
attribute
 nray double
Geo/Scan_Time   　 　
DayOfMonth - Day of month
attribute
:long_name = "Day of Month";
:_ChunkSizes = 1U; // uint
 nray byte
DayOfYear - Day of year
attribute
:long_name = "DayofYear";
:_ChunkSizes = 1U; // uint
 nray short
Hour - Hour
attribute
:long_name = "Hour";
:_ChunkSizes = 1U; // uint
 nray byte
MilliSecond - MilliSecond
attribute
:long_name = "Millisecond";
:_ChunkSizes = 1U; // uint
 nray float
Minute - Minute
attribute
:long_name = "Minute";
:_ChunkSizes = 1U; // uint
 nray byte
Month - Month
attribute
:long_name = "Month";
:_ChunkSizes = 1U; // uint
 nray byte
Second - Second
attribute
:long_name = "Second";
:_ChunkSizes = 1U; // uint
 nray byte
SecondOfDay - Second of day
attribute
:long_name = "Second of Day";
:_ChunkSizes = 1U; // uint
 nray int
Year - Year
attribute
:long_name = "Year";
:_ChunkSizes = 1U; // uint
 nray short
HeaderData

Please reffer to the "Product Definition Document" for header information.