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
vCa 2025/12/1 ・The results of vicarious calibration using the Himawari‑9/AHI cloud products were applied in the processing.
・The retrieval calculations were extended to cover solar zenith angles up to 80°, instead of the previous limit of 70°.		 PDF

Input Data

AUX_3MH
MSI_RGR

Dimension

Name Number of Pixels Description
across 384 number of across track pixels
along 12000 number of along track pixels

Variables

ScienceData
Variable Name Units Description/Attributes Dimention Type
Data   　 　
cloud_effective_radius_band3 um Cloud effective radius (band3: 1.6um)
attribute
:long_name = "Cloud Effective Radius using band 3 (centered at 1.6 micro m)";
:units = "micro m";
:valid_range = 0.0f, 100.0f; // float
:_FillValue = 9.96921E36f; // float
:_ChunkSizes = 100U, 384U; // uint
 along, across float
cloud_effective_radius_band4 um Cloud effective radius (band4: 2.3um)
attribute
:long_name = "Cloud Effective Radius using band 3 (centered at 1.6 micro m)";
:units = "micro m";
:valid_range = 0.0f, 100.0f; // float
:_FillValue = 9.96921E36f; // float
:_ChunkSizes = 100U, 384U; // uint
 along, across float
cloud_flag_bitfield - Cloud flag bit field
0: Algorithm Execute (0=Not executed, 1=Executed), 1-3: Clear Confidence Level (000=Cloudy, 111=Confident Clear), 4: Day/Night Flag (0=Night, 1=Day), 5-6: Land/Water Flag (00=Water, 01=Coastal, 10=Desert, 11=Land), 7:Snow/Ice Probablity (0=Yes, 1=No), 8-9:Sunglint(00=Sun glint, 11=No), 10:Heavy Aerosol (0=Yes, 1=No), 11:Cirrus Probability (0=Yes, 1=No), 12: Cloud Inhomogeneity (0=Inhomogeneous, 1=Uniform),  13-14: Cloud Phase (00=Uncertain, 01=Water, 10=Ice, 11=Mixed), 15: Snow Screening (0=NG, 1=OK)
attribute
:long_name = "Cloud Flag Bit Field";
:valid_range = -2147483647, 2147483647; // int
:_FillValue = -2147483647; // int
:_ChunkSizes = 100U, 384U; // uint
 along, across int
cloud_optical_thickness - Cloud optical thickness
attribute
:long_name = "Cloud Optical Thickness";
:valid_range = 0.0f, 150.0f; // float
:_FillValue = 9.96921E36f; // float
:_ChunkSizes = 100U, 384U; // uint
 along, across float
cloud_top_height m Cloud top height
attribute
:long_name = "Cloud Top Height";
:units = "m";
:valid_range = 0.0f, 20.0f; // float
:_FillValue = 9.96921E36f; // float
:_ChunkSizes = 100U, 384U; // uint
 along, across float
cloud_top_pressure hPa Cloud top pressure
attribute
:_FillValue = 9.96921E36f; // float
:long_name = "Cloud Top Pressure";
:units = "hPa";
:valid_range = 1.0f, 1100.0f; // float
:_ChunkSizes = 100U, 384U; // uint
 along, across float
cloud_top_temperature K Cloud top temperature
attribute
:long_name = "Cloud Top Temperature";
:units = "K";
:valid_range = 150.0f, 350.0f; // float
:_FillValue = 9.96921E36f; // float
:_ChunkSizes = 100U, 384U; // uint
 along, across float
L2_quality_flag_1km - L2 quality flag
attribute
:long_name = "L2 Quality Flag Method (1km)";
:_FillValue = -2147483647; // int
:_ChunkSizes = 1U; // uint
 along, across int
quality_flag - Quality flag
attribute
:long_name = "Quality Assurance Flag";
:valid_range = 0UB, 255UB; // ubyte
:_ChunkSizes = 100U, 384U; // uint
 along, across ubyte
Geo   　 　
day_night_flag - Day/night flag
0: night. 1: day
attribute
:long_name = "Day night flag";
:valid_range = 0B, 1B; // byte
:_FillValue = -127B; // byte
:_ChunkSizes = 100U, 384U; // uint
 along, across byte
land_water_flag - Land/water flag
0: water, 1: land
attribute
:long_name = "Land water flag";
:valid_range = 0B, 1B; // byte
:_FillValue = -127B; // byte
:_ChunkSizes = 100U, 384U; // uint
 along, across byte
latitude degree_north Latitude
attribute
:long_name = "Latitude";
:units = "degree_north";
:valid_range = -90.0, 90.0; // double
:_FillValue = 9.969209968386869E36; // double
:_ChunkSizes = 100U, 384U; // uint
 along, across double
longitude degree_east Longitude
attribute
:long_name = "Longitude";
:units = "degree_east";
:valid_range = -180.0, 180.0; // double
:_FillValue = 9.969209968386869E36; // double
:_ChunkSizes = 100U, 384U; // uint
 along, across double
relative_azimuth_angle degree Relative azimuth angle
attribute
:long_name = "Relative Azimuth Angle";
:units = "degree";
:valid_range = 0.0f, 180.0f; // float
:_FillValue = 9.96921E36f; // float
:_ChunkSizes = 100U, 384U; // uint
 along, across float
satellite_zenith_angle degree Satellite zenith angle
attribute
:long_name = "Satellite Zenith Angle";
:units = "degree";
:valid_range = 0.0f, 90.0f; // float
:_FillValue = 9.96921E36f; // float
:_ChunkSizes = 100U, 384U; // uint
 along, across float
solar_zenith_angle degree Solar zenith angle
attribute
:long_name = "Solar Zenith Angle";
:units = "degree";
:valid_range = 0.0f, 180.0f; // float
:_FillValue = 9.96921E36f; // float
:_ChunkSizes = 100U, 384U; // uint
 along, across float
time seconds since 2000-1-1 00:00:00.0 0:00 Time
attribute
:units = "seconds since 2000-1-1 00:00:00.0 0:00";
:_FillValue = 9.969209968386869E36; // double
:long_name = "Time";
:_ChunkSizes = 1U; // uint
 along  double
Geo/Scan_Time   　 　
DayOfMonth - Day of month
attribute
:long_name = "Day of Month";
:_ChunkSizes = 1U; // uint
 along  byte
DayOfYear - Day of year
attribute
:long_name = "DayofYear";
:_ChunkSizes = 1U; // uint
 along  short
Hour - Hour
attribute
:long_name = "Hour";
:_ChunkSizes = 1U; // uint
 along  byte
MilliSecond - MilliSecond
attribute
:long_name = "Millisecond";
:_ChunkSizes = 1U; // uint
 along  float
Minute - Minute
attribute
:long_name = "Minute";
:_ChunkSizes = 1U; // uint
 along  byte
Month - Month
attribute
:long_name = "Month";
:_ChunkSizes = 1U; // uint
 along  byte
Second - Second
attribute
:long_name = "Second";
:_ChunkSizes = 1U; // uint
 along  byte
SecondOfDay - Second of day
attribute
:long_name = "Second of Day";
:_ChunkSizes = 1U; // uint
 along  int
Year - Year
attribute
:long_name = "Year";
:_ChunkSizes = 1U; // uint
 along  short
HeaderData

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