WMOD00595

• Title: Lake Oroville Runoff Enhancement Project - Final Report
• Date: 9/1/1995
• Weather Modification - Doc Type: Report

2. OPERATION OF GROUND-BASED EQUIPMENT

The LOREP study area was located in the northern Sierra Nevada as shown on figure 2.1.
Ground-based equipment for the LOREP consisted of the following:

· lVIountaintop weather stations
· Propane dispensers
· Rawinsonde observations (atmospheric soundings)
· Precipitation gauges
· SF" (sulfur hexaflouride) tracer gas release, sequential samplers, and analyzer
· Radiometer
· Radar 'wind profiler
· Microphysics observations

The use of this equipment for the LOREP and related measurement sites are summarized
in the following subsections.

2.1 Mountaintop \Veather Stations

Mountaintop weather stations were installed at four locations within the LOREP study area.
The locations of these remote automatic weather stations are shown on figure 2.1 and listed
in table 2.1. Handar model 540A DCPs (data collection platforms) were used to collect the
data, 'which were then transmitted hourly through GOES satellite.

Table 2.1. - :\Iountaintop weather stations. Data are transmitted hourly through GOES satellite.
Station 3-letter DCP Transmit Data Avg. Ele'". Lat. Long.
Kame Ident. ID Time Interval tmj Xorth West
(min) (min)
Red Hill RDH 34243F 4A 32 5 1936 40.04 = 121.19C
Mills :\ILS 34243198 31 ;) 2248 39.70c 120.62"
Peak
Mt. :\lHH 34246F36 38 ;) 2204 40.05c 120.88"
Hough
Jackson: JCR 34249FB2 44 ;) 1951 39.86c 120.63"
Creek
1 X 0 ice detector

The 1993-94 winter was the seventh consecutive winter season in which icing data were
collected at the RDH (Red Hill) mountaintop weather station. In addition, 4 winter seasons
of data (1990-91 through 1993-94) have been collected at l\-IHH eMt. Hough) and MLS (Mills
Peak). The JCR (Jackson Creek) station was only operated during the last 2 yT of the project
(1992-93 and 1993-94).

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