|WORLD METEOROLOGICAL ORGANIZATION||
|Explanation of the criteria for classification and numbering of components||
|Explanation of the dates on the component's description|
MANUAL CALIBRATION PROGRAM (NWSRFS-MCP3)
1. Purpose and objectives
The purpose of MCP3 is to enable users to determine parameter values for the National Weather Service River Forecast System (NWSRFS) models by
trial and error calibration using periods of historical data.
MCP3 is based on an operation table concept allowing the user to combine any of the available hydrological models, statistical packages, displays and other algorithms in whatever order is needed to provide the required results. The hydrological models available in MCP3 include: Sacramento soil moisture accounting model (see component J04.3.01), NWSRFS snow accumulation and ablation model (see component J04.3.03), unit hydrograph, and several flow routing methods such as Lag and K, layered coefficient, Tatum and Muskingum. Also included are operations for adding and subtracting one time series from another; adjusting simulated flows to match observed values; accounting for losses or gains of water as a result of flow through the channel bottom and evaporation through the stream surface; setting all time series values to zero; plotting instantaneous discharge time series; computing mean discharge from instantaneous discharge; plotting time series on a monthly basis or by water year; computing a variety of statistics to compare simulated and observed mean daily discharge; and weighting the input time series to produce weighted output time series.
Several of the models available in combination in MCP3 are included in the HOMS Reference Manual as separate components.
Input file data defining the period of the run, the time series to be used, the sequence of operations, and parameters for each operation. Time intervals from 1 to 24 hours can be used. Time series data input from disk files.
Tabular and plotted output are printed; time series can be stored on disk or may be punched. Error messages are printed.
5. Operational requirements and restrictions
a) One person with knowledge and experience in hydrological processes,
b) With the qualifications described above, 2 weeks of training is
c) Program is written in FORTRAN 77 for use on HP workstations; but
d) Maximum array sizes are variably dimensioned and can be specified
6. Form of presentation
MCP3 is available from the HOMS National Reference Centre for the USA as a part of NWSRFS. It is not available as a separate component.
7. Operational experiences
Models have been used over a wide variety of climate conditions with good results; regular usage in U.S. by National Weather Service; implementation is complex.
8. Technical support
Dr. Michael Smith, Hydrologic Research Laboratory, NOAA-NWS.
10. Conditions on use
| Reclassified from J05.3.01 MAR 1987
(First entered: 03 FEB 81
Last updated: 1 DEC 99)