JAXA Auxiliary Products(ECMWF)

Data Access

G-portal: https://gportal.jaxa.jp/gpr/?lang=en
*G-portal account is also required for data download via SFTP.

Version History

Version Date Update Release Note
vBa 2025/3/13 Start of data provision -
vBb 2025/4/22 A bug was fixed in which extrapolation of the geometrical_height data was not performed under certain input data conditions. -
vBc 2025/8/5 No changes (administrative version increment only) -
vCa 2025/12/1 ・A bug was fixed in which identical pressure values were assigned to different altitudes.
・New variables were added.		 -

Input Data

X-MET
CPR_NOM
ATL_NOM

Dimension

Name Number of Pixels Description
nalt 5500 number of along track pixels
nz1 222 number of vertical sample grid 1
nz2 221 number of vertical sample grid 2

Variables

ScienceData
Variable Name Units Description/Attributes Dimention Type
Data   　 　 　
pressure Pa Mid-layer pressure
attribute
 nalt, nz1 float
temperature K Temperature
attribute
 nalt, nz1 float
specificHumidity kg/kg Specific humidity
attribute
 nalt, nz1 float
ozoneMassMixingRatio kg/kg Ozone mass mixing ratio
attribute
 nalt, nz1 float
surfacePressure Pa surface pressure
attribute
 nalt float
seaIceCover - Sea Ice Cover
attribute
 nalt float
snowDepth m Snow Depth
attribute
 nalt float
10MetreUWindComponent m/s 10 m U wind component
attribute
 nalt float
10MetreVWindComponent m/s 10 m V wind component
attribute
 nalt float
2MetreTemperature K 2 m temperature
attribute
 nalt float
quality_flag - Quality flag
0: Good, 1: NG or error
attribute
 nalt byte
totalColumnOzone kg/m^2 Total column ozone
attribute
 nalt float
totalColumnWaterVapour kg/m^2 Total column water vapor
attribute
 nalt float
Geo   　 　 　
time seconds since 2000-1-1 00:00:00.0 0:00 Time
attribute
 nalt double
height m Altitude of pixels center above WGS84 ellipsoid
attribute
 nalt, nz2 float
latitude degree_north Latitude of pixel center
attribute
 nalt double
longitude degree_east Longitude of pixel center
attribute
 nalt double
elevation m Terrain elevatino for JSG pixel center above WGS84 ellipsoid
attribute
 nalt float
day_night_flag - Day/Night flag
0: night, 1: day
attribute
 nalt byte
land_water_flag - Land/Water flag
0: water, 1: land
attribute
 nalt byte
lidarCount - Number of lidar shots in this pixel
attribute
 nalt byte
radarCount - Number of radar shots in this pixels
attribute
 nalt byte
alongTrackIndex - Index of the along track dimention
attribute
 nalt int
nz - Vertical dimention
attribute
 nz2 float
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.