Retrieve an NCEP water vapor image
Retrieve an NCEP water vapor image for the date of interest.
- HOUR
- Acquisition hour used to determine which NCEP model to retrieve:
HOUR Z model ------- -------- 0-2 00 3-8 06 9-14 12 15-20 18 21-23 00 (next day's)
- MONTH
- Month of output image
- DAY
- Day of output image
- YEAR
- Four digit year of output image
- OUT
- Filled water vapor output image. A 1-band image of water vapor values.
- SILOBASEDIR
- Base SILO directory (See User Notes 1 and 2)
- WATERBASEDIR
- Base water vapor directory (See User Note 1)
- BACKDIR(--)
- Backup water vapor directory (See User Note 4)
The NCEP daily image for June 4, 1998 is retrieved. The standard ddr will be found in directory /sgs4/km1/adaps/images and the NCEP images on the silo in directory /avhrr/ncep_watervapor/1998. The output image name is jun04water.
The input parameters are combined to create image names of the daily images. The SILO is checked to see if the daily image exists. If the daily image exists, it is retrieved. If no NCEP image exists for the day in interest, an error status is returned. No climatology data exists for the NCEP dataset.
None.
The daily NCEP image was not on the SILO. Consider using the TOVS dataset instead.
An error occurred while reading from the SILO. Ensure the system is operational, and try again.
basedir \--- ncep_watervapor \--- 1979 \--- 1980 \--- ... \--- 2000
The backup directory is only a backup for the silo and as such only the img files are copied. There are cd's in the archive containing all TOVS and NCEP images except the current year. Current years images are archived in January of the following year. The CD's are stored as code 049; project AVHRR greeness; and description: TOVS/NCEP water vapor YYYY. The ADAPS software person should have an online backup of current year images available.