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Sample Data

Analysis Data

Observational Data

 


 

NCEP Eta Data (archived at about 40 km resolution)


General information about this dataset

How to use this dataset with pregrid

Is this data available to ALL users

How to download data automatically

  • This option is only available to users with NCAR accounts
  • To obtain the data:
  • When you run this scripts make sure that you work in a temporary directory (such as /tmp/$USER, or /ptmp/$USER on IBM).
    • If your job is successful, you should see the following 2 directories YYYYMM_3Danal (containing the 3D analysis files - one file for each time period) and YYYYMM_SFanal (containing the 2D surface files - one file for each time period)
  • Once you have downloaded the files from the MSS, you need to ftp the files to your local computer. All files must be transferred with the ftp "binary" mode.

How to download data manually

  • This option is only available to users with NCAR accounts
  • Go to ftp://ncardata.ucar.edu/datasets/ds609.2/inventories/eta.inv, and find out which G40xxx file contains the time period of your interest.
  • Note that you should get both 3Danal and SFanal files.
  • On NCAR's IBM or other machines, obtain the files by using this command:
    • msread -f BI  G40xxx  /DSS/G40xxx
    • These files are very large in size and each contains a full month of data, so you may want to extract the files for your time periods first before you rcp or ftp back to your local computer.
  • To find out what are in these files, go to:
  • NOTE:
    • The analysis data are only available every 12 hours (*tm00 files). For the 6 or 3 hour files you need to also get the *tm06 or *tm09/*tm03 files.
    • You should obtain *.tm?? files from both 3D and SFC data
       

      

    If you want this date:
     

    Get these files:  
     

      

    1998-06-15_00

    9806_3Danal/98061500.AWIP3D00.tm00
    9806_SFanal/98061500.AWIPSF00.tm00

      

    1998-06-15_03

    9806_3Danal/98061512.AWIP3D00.tm09
    9806_SFanal/98061512.AWIPSF00.tm09

      

    1998-06-15_06

    9806_3Danal/98061512.AWIP3D00.tm06
    9806_SFanal/98061512.AWIPSF00.tm06

      

    1998-06-15_09

    9806_3Danal/98061512.AWIP3D00.tm03
    9806_SFanal/98061512.AWIPSF00.tm03

      

    1998-06-15_12

    9806_3Danal/98061512.AWIP3D00.tm00
    9806_SFanal/98061512.AWIPSF00.tm00

      

    1998-06-15_15

    9806_3Danal/98061600.AWIP3D00.tm09
    9806_SFanal/98061600.AWIPSF00.tm09

      

    1998-06-15_18

    9806_3Danal/98061600.AWIP3D00.tm06
    9806_SFanal/98061600.AWIPSF00.tm06

      

    1998-06-15_21

    9806_3Danal/98061600.AWIP3D00.tm03
    9806_SFanal/98061600.AWIPSF00.tm03

      

    1998-06-16_00

    9806_3Danal/98061600.AWIP3D00.tm00
    9806_SFanal/98061600.AWIPSF00.tm00


  • Type the following to extract files from G40001, for example:
    • tar -xvf G40001  9706_3Danal/97062400.AWIP3D00.tm00  \
                                9706_3Danal/97062412.AWIP3D00.tm00  \
                                9706_3Danal/97062500.AWIP3D00.tm00
  • Do the same for the surface data file
  • Once you have downloaded the files from the MSS, you need to ftp the files to your local computer. All files must be transferred with the ftp "binary" mode.
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