WMOD00399

• Title: WMO Training Workshop on Weather Modification for Meteorologists - Lecture Notes
• Date: 12/1/1979
• Weather Modification - Doc Type: Report

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With a second radar expected to be available during 1980 and onwards, both the
siting and operating modes can be optimized to give the maximum amount of useful data. The
observations and analysis of the 1979 data will provide an essential input to making these
decisions.

~

Analysis of the 1979 data will probably suggest some new studies or some changes
in emphasis of the ongoing studies which should be incorporated in the 1980 field programme.

4.5 Seeding Strategy

If the cloud microphysics measurements confirm that there are sufficient seedable
clouds in the Spanish site to conduct the PEP statistical experiment, then the next major
task will be to develop a seeding strategy. The microphysical measurements themselves will
provide an important input to this decision. In addition, it will be necessary to conduct
some experimental seeding using different delivery methods and to conduct some plume trac-
ing tests and turbulence measurements in order to estimate the rate of dispersion of the
seeding material.

These studies do not really belong in the SSP-3 phase; however, they are absolut-
ely necessary to approach the Precipitation Enhancement Experiment in an efficient manner.
They will help considerably in the detailed design of the statistical seeding experiment,
and, it is hoped, even replace the exploratory phase, such that the hypotheses of the seed-
ing effects can be properly specified by the send of SSP-3 and can be built into a confirm-
atory experiment without delay.

4.6 Overall Management

The management of SSP-3 is ve,ry similar to that for PEP (Section 3.3.5). A Field
Proj ect Co-ordina tor (FPC) will be appbinted by the Secretary-General and assigned to work
as a member of the SPG in close liaison with the leader and other members of the SPG. He
will be assisted in this task by an Operations Advisory Team and also by a Spanish Liaison
Officer to handle all of the local co-ordination with Spanish agencies. This will allow
the Field Project Co-ordinator to conCEntrate on management and co-ordination of the field
operations to fulfil the scientific aspects of the SSP-3.

The organizational chart for the field management of SSP-3 is shown in Figure 3.

4.7 Other Aspects

There are many other aspects of SSP-3. The rest of the "WMO Training Workshop in
Weather Modification for Meteorologists" will deal with most the them. The reader is also
referred to the PEP Report No. 11. Suffice it to add that the follo~ing items need to be
considered: Organization, Synoptic Analysis and Forecasting, Weather Radar Operations,
Cloud Physics Aircraft Operations, Surface Precipitation and Nuclei Measurements, the
Operations Centre, Data Management and Analysis, Ground Support Facilities and Manpower,
Meteorological Satellite Data, etc. The scale of operations for SSP-3 is made clear by
Table 3 with figures concerning manpower.

5. CONCLUD ING REMARKS

Any weather modification experiment requires a long-term commitment of resources
of many types, the operational funding being at the top of the list together with imagina-
tive leadership. An experiment duration of ~ 10 years in total is not often compatible
with funding cycles of governments or agencies. Further, there are so many decision points
that one cannot expect firm commitments for something which may cease to exist not too far
in the future. A resulting off-and-on operation, on the other hand, is not very conducive
for an efficient experiment.