2 Colo. Code Regs. § 401-1-19

Current through Register Vol. 48, No. 1, January 10, 2025

Rule 2 CCR 401-1-19 - Weather Modification Evaluations

The Director desires to promote continuous research, development, and evaluation of permitted programs. Permit holders shall submit periodic evaluation proposals to the Project Sponsors. Periodic is defined as at least once during a five-year permit or twice during a ten-year permit. A periodic evaluation should be outside of the normal annual reporting methods. Evaluations that are peer reviewed and published in journals can count as "independent" evaluations. The Director recommends the following list of data and types of studies for use in the evaluation.

A. The following are examples of data for evaluations:

(1) Standard meteorological data from surface weather stations;

(2) Radar and other remote sensing data, cloud physics data;

(3) Streamflow data;

(4) SNOTEL and snow course data;

(5) Hail pad data, upper air data;

(6) Upper air data;

(7) Precipitation gauge;

(8) Modeling simulations;

(9) Trace chemistry data from snow sampling; or

(10) Ice nucleus data.

B. The following are examples of types of evaluations:

(1) Predictive and/or diagnostic cloud modeling;

(2) Modeling of transport and diffusion of seeding material;

(3) Airflow, temperature, and liquid water measurements in the target area;

(4) Trace chemistry analysis in snowpack to assess targeting;

(5) Precipitation gauges comparisons;

(6) Aircraft cloud microphysical studies;

(7) Plume tracking of cloud seeding aerosols or tracers;

(8) Analysis of precipitation from existing projects that employ a randomized design in their seeding operations; or

(9) Other evaluations outlined in various published documents related to the conduct of weather modification projects.

2 CCR 401-1-19