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  • 1/13 Questions

    Most of the WRF idealized cases get their initial meteorological state from:

    • The metgrid.exe program, same as the real-data cases
    • A single sounding, the text file is located in each test case directory
    • The namelist.input file provides thermal, moisture, and momentum profiles
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  • 2. 

    After running the idealized case initialization program, ideal.exe, the input file(s) created for the WRF model are:

    • Wrinput_d01, wrfinput_d02, wrfbdy_d01

    • Wrfinput_d01, wrfbdy_d01

    • Wrfinput_d01

    • Other than print-outs, no files are created by ideal.exe

    Correct Answer
    A. Wrfinput_d01
    Explanation
    An idealized case typically uses non-specified boundary conditions, hence it does not require a wrfbdy file. Because the initial condition is typically set by a sounding, no nest input file is necessary.

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  • 3. 

    Adding a state variable (with all settings for I/O, dimensions, type, internal name in files, nesting options) requires how many lines of changes in the Registry.EM_COMMON file?

    • Zero

    • One

    • About 10

    • More than twenty

    Correct Answer
    A. One
  • 4. 

    To enable changes made to the file Registry.EM_COMMON, the following steps are required.

    • Re-compile only

    • Re-configure and re-compile only

    • Clean, re-configure, and re-compile

    • The registry is a runt-time option, no additional processing is required for the changes to take effect

    Correct Answer
    A. Clean, re-configure, and re-compile
  • 5. 

    The Registry file is involved with local variables inside of physics schemes

    • True

    • False

    Correct Answer
    A. False
    Explanation
    See "WRF Registry and Examples" slides.

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  • 6. 

    The Registry file is involved with any variable requiring I/O, communication, or nesting.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    See "WRF Registry and Examples" slides.

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  • 7. 

    What programs use the Registry system?

    • All of WPS and all of WRF

    • WPS only

    • All of WRF (real.exe, wrf.exe, and ndown.exe)

    • The wrf.exe program only

    Correct Answer
    A. All of WRF (real.exe, wrf.exe, and ndown.exe)
  • 8. 

    New geographical datasets ingested by the geogrid program can be in which format(s)?

    • NetCDF

    • GRIB

    • Binary raster

    • All of the above

    Correct Answer
    A. Binary raster
  • 9. 

    For which fields can a user supply high resolution static data?

    • Topography

    • Land use

    • Any field that already exists in the GEOGRID.TBL

    • And field at all

    • Only (a) and (c)

    Correct Answer
    A. And field at all
  • 10. 

    Geographical datasets processed through the GEOGRID.TBL must be:

    • On a regular latitude-longitude grid

    • On a grid dimensioned less than 99999 x 99999 points

    • Sufficient to cover the entire model domain

    • All of the above

    Correct Answer
    A. On a grid dimensioned less than 99999 x 99999 points
  • 11. 

    The METGRID.TBL allows users to add observations to a model domain.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The METGRID.TBL file controls how meteorological fields (from input data) are interpolated to the WRF model across the domain. The does not allow users to add observations.

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  • 12. 

    Masked interpolation is different from standard interpolation, due to:

    • The values of some fields are very different over water and over land (e.g., soil moisture is meaningless over water)

    • One cannot interpolate land temperature and SST over coastal areas to obtain meaningful values for either land or water points

    • The problem of inconsistent land and water areas between the parent and child domain

    • All of the above

    Correct Answer
    A. All of the above
  • 13. 

    The WRF model executable created by any of the idealized simulations, and the WRF model executable created by the real-data build may be used interchangeably

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The wrf model executable, wrf.exe, is simply the executable that issues the commands for running the model. There is no difference in this executable built for a real or idealized case. The important difference between idealized and real cases are what takes place in ideal.exe and real.exe, i.e., how initial (and boundary) conditions are created.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jan 26, 2017
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 21, 2016
    Quiz Created by
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