WMOD00263 ‎(2)‎

• Applicant: CWCB
• Sponsor Name: USBR
• Project Name: Response to RFP
• Title: Numerical Simulations of Snowpack Augmentation for Drought Mitigation Studies in the Colorado Rocky Mountains
• Prepared For: USBR
• Prepared By: Joe Busto, CWCB
• Date: 8/20/2003
• Weather Modification - Doc Type: Application

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4. Research Work Plan and Schedule

4.1 Basic Research Work Plan

The proposed Research Work Plan (RWP) is based on a 5-month DWD operational cloud
seeding program beginning shortly after time of award of the WDMP grant funds to the
Colorado Water conservation Board. For this RWP the start date is assumed to be
November 1, 2003.

Task #1 - Set up RAMS over the Denver Water Department (DWD) operational
cloud seeding area and over the locations of the ground-based seeding generators.

DWD program Seeding contractor WWC/Larry Hjermstad will provide a list of the
generator locations to the CSU team at the start of the WDMP project. Setting up and
testing of the RAMS will be done by Ray McAnelly from the CSU team with supervision
by PI Bill Cotton during the first 0.5 month of the project.

Task #2 - Implement algorithms simulating cloud seeding generators as sources of
IFN at specific ground-based sites.

Gustavo Carrio from the CSU team will modify the RAMS source code to include WWC
seeding generator locations and operational periods, and a translation of generator mass
production rates into model forecast variables for IFN concentrations. PI Bill Cotton will
supervise the work this task. This task will be accomplished during the first 1.0 month of
the project.

Task #3 - Perform simulations of Lagrangian transport of seeding materials on
selected days covering a range of wind and stability regimes.

This task first involves selecting certain meteorological regimes that impact the transport
and dispersion of seeding material, and then identify case study days that represent those
regimes. At the start of the project, Ray McAnelly from the CSU team will implement
procedures for the automatic collection of meteorological data needed for the decision
making. The selection of the meteorological regimes and the identification of case study
days will be done by PI Bill Cotton in collaboration with CWCB consultant Curt
Hartzell, and review by Reclamation staff. The final selection process will be completed
after the end ofthe 5-month DWD operational cloud seeding program.

The CSU team will then perform Lagrangian trajectory analyses using model output data
to examine the predicted trajectories and the extent to which they interact with clouds in
the target area. Ray McAnelly from the CSU team will spend 1.5 months on this task; PI
Bill Cotton will supervise the work and participate in the examination of the predicted
trajectories. CWCB Consultant Curt Hartzell will provide technical review of the work.
It is anticipated that the anaylsis task will begin directly after the meteorological regimes
have been identified and the case study days selected, i.e. after the 5th month ofthe
research project.

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