jianglizhi
New member
Hello,
I used download the GFS 0.25 degree data through the AWS cloud website. https://noaa-gfs-bdp-pds.s3.amazonaws.com/index.html
It is strange that ungribbed FILE data only contains 21 levels data.
the output of vars attribute
gfs.t00z.pgrb2b.0p25.f000
Then I redownload the data from the RDA website,
It contains 41 levels data
gfs.0p25.2023072718.f000.grib2
https://data.rda.ucar.edu/d084001/2023/20230727/gfs.0p25.2023072718.f000.grib2
I don't know the difference between the two src data. It should have the same dimensions. However, the results of ungrib are different.
So the result is that It is better download the data from the RDA website, instead of AWS/ NCEI
I used download the GFS 0.25 degree data through the AWS cloud website. https://noaa-gfs-bdp-pds.s3.amazonaws.com/index.html
It is strange that ungribbed FILE data only contains 21 levels data.
the output of vars attribute
gfs.t00z.pgrb2b.0p25.f000
and from the ungrib.log, it not contains the soil level. see ungrib.log_AWSVariable: f
Type: file
filename: gfs.t00z.pgrb2b.0p25.f000
path: gfs.t00z.pgrb2b.0p25.f000
file global attributes:
dimensions:
lv_ISBL0 = 21
lat_0 = 721
lon_0 = 1440
lv_AMSL1 = 5
lv_SPDL2 = 5
lv_PVL3 = 6
lv_ISBL4 = 17
lv_ISBL5 = 16
lv_ISBL6 = 5
lv_DBLL7 = 4
variables:
float TMP_P0_L100_GLL0 ( lv_ISBL0, lat_0, lon_0 )
center : US National Weather Service - NCEP (WMC)
production_status : Operational products
Then I redownload the data from the RDA website,
It contains 41 levels data
gfs.0p25.2023072718.f000.grib2
https://data.rda.ucar.edu/d084001/2023/20230727/gfs.0p25.2023072718.f000.grib2
Variable: f1
Type: file
filename: gfs.0p25.2023072718.f000
path: gfs.0p25.2023072718.f000.grib2
file global attributes:
dimensions:
lat_0 = 721
lon_0 = 1440
lv_ISBL0 = 41
lv_AMSL1 = 3
lv_HTGL2 = 3
lv_PVL3 = 2
lv_HTGL4 = 2
lv_SIGL5 = 4
lv_ISBL6 = 22
lv_HTGL7 = 7
lv_SPDL8 = 3
lv_HTGL9 = 2
lv_HYBL10 = 2
lv_DBLL11 = 4
variables:
float TMP_P0_L1_GLL0 ( lat_0, lon_0 )
center : US National Weather Service - NCEP (WMC)
production_status : Operational products
I don't know the difference between the two src data. It should have the same dimensions. However, the results of ungrib are different.
So the result is that It is better download the data from the RDA website, instead of AWS/ NCEI
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