WMOD00453

• Project Name: Park Range Atmospheric Water Resources Program
• Title: Park Range Atmospheric Water Resources Program - Phase I
• Date: 1/1/1967
• Weather Modification - Doc Type: Report

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Figure 27.-Rain.rate Sensor.

data for plume prediction with the Hanford model;
this site also uses the two-channel Bendix-Friez
recorder that is normally sold with the Aerovane
transmitter. All other sites have recorders that we
constructed to give us added measurement flexi-
bility. They consist of two Rustrak recorders op-
erating at 6 in./hr. paper speed and an electronic
package that allows selection of wind speed range,
0-20, 0-40, 0-100 m.p.h. wind speed time-constant,
o or 20 seconds, and wind direction time-consta~t,
0, 10, 20 seconds. For analysis purposes, this flexi-
bility makes trace interpretation easier, figure 32,
than when the full response of the transmitter is
recorded.
Thermographs, with 8-day clock drives, are in-
stalled at the five locations mentioned above and
a hygrothermograph combination at Steamboat
Springs; all are housed in standard instrument
shelters. Steamboat Springs also has a microbaro-
graph. On Emerald Mountain, shielded thermistors
are used to detect temperature at the 50-foot and
12-foot levels; their outputs are displayed on strip
chart recorders- for stability determination and use
in the diffusion model.
An M-33 radar and FMQ-5 rawinsonde receiver
operate from the Mt. Harris site, figure 33. The
M-33 has PPI (plan position indicator) and A scope
presentations. It sees no ground clutter above

PARK. RANGE ATMOSPHERIC WATER RESOURCES PROGRAM

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Figure 28.-0ptical Snow-rate Sensor.

15,000 feet ASL over the Park Range ridge-a dis-
tance of 25 miles from the Mt. Harris site-and
has a clear view at almost all azimuth angles.
Wind profiles can be determined with the FMQ-5
by tracking the sonde with an auxiliary 400 mc.
antenna mounted on the M-33 antenna. Target-
acquisition is manual and target-track automatic.
The Bureau of Reclamation has constructed per-
manent pads and brought in commercial power to
Mt. Harris for the Nike-Ajax radar equipment that
is to be installed this summer. M-33 and FMQ-5
equipment was used this season in cooperation with
the National Center for Atmospheric Research.

Hydrological Measurement Equipment
Snowcourse measurements were made by the Soil
Conservation Service with aluminum tube, Utah-
design, coring tools, figure 34. Soil Conservation
Service personnel have their own Sno-Cat for ridge
operations, and we monitor their radio frequency
for safety purposes.
Existing recording stream gages at Clark and
Steamboat Springs were not used for data purposes
because of the watersheds that they meter and the