1. IMPLEMENTATION OF A REAL TIME
NUMERICAL WEATHER PREDICTION
(NWP) FORECASTING SYSTEM :
VALIDATION AND DATA
DISSEMINATION
BY ISIAH .T. KAZAPUA

2. PROJECT
OBJECTIVES:
•To implement a real
time numerical weather
prediction (NWP)
forecasting system.
•Validate the data from
the model using data
from other sources.
•Disseminate the
graphical data on a
website (intranet).
Introduction
A real time(NWP)
forecasting system is
one which uses
mathematical equations
and models of the
atmosphere and oceans
to simulate the
evolution of the
atmosphere in a given
period of time, usually
days.

3. Dynamics and Physics Parameterizations:
•In the dynamics options, motions of the atmosphere; Vertical and
Horizontal also the gravity wave drag option was turned off because the
domain that was to be modelled on does not include high range altitudes.
•Then the physics options were chosen as follows:
 Cumulus scheme - Kain-Fritsch convective parameterization
 Radiation schemes - Shortwave radiation : Goddard scheme
- Long-wave Radiation : RRTM
By the Stephan Boltzmann equation E= ɛ Ϭ T4
 Surface Layer scheme - Monin-Obukhov similarity theory

4. Domain Creation - The Domain was created over lower
latitudes or areas in Southern Africa namely ; Botswana,
RSA, Zimbabwe, Lesotho and Swaziland.

5. VALIDATION OF DATA
Temperature Data from
Department of
Meteorological Services
Temperature Data from
the WRF-EMS
REGION MAX TEMP MIN TEMP
Francis-
town
22 16
Maun 25 17
Tsabong 29 15
Gaborone 26 14
REGION MAX TEMP MIN TEMP
Francis-
town
24 15
Maun 28 18
Tsabong 28 16
Gaborone 27 13

6. DISSEMINATION OF DATA

7. CONCLUSION
The project objective of implementing a real time numerical
weather (NWP) forecasting system was met.
The models data was validated using observations obtained
from the Department of meteorological services.
The data was disseminated through a website (intranet).
The model worked relatively well given that the forecasted
parameters and observed data were not that much different,
thus to improve its capability, needs to be compared to other
operational models such as the Consortium for small scale
models (COSMO).

8. •THANK YOU.. COMMENTS ??
SUGGESTIONS??
•SEND ANYMORE COMMENTS TO THE
EMAIL;
•ikazapua@gov.bw