SAHRA - Flux Towers

Tower PM4

Location: Across from Palisades Ranger Station
Distance to ECm1: 898 m at 308^O. True N
Distance to WTm2: 1.92 km bearing 261^O. True N
Distance to BCm3; km bearing^O. True N

Site Description:
Fir/Pine mix

GPS Coordinate: Datum WGS84
Latitude: 32° 24' 38" N Longitude: 110° 42' 47.72" W

Station Elevation: 2459 m above sea level

Initial Instalation: 26-Jun-01

Equipment:

Dataloggers Used:
- CR10X (produced by Campbell Scientific) S/N :
Standard operating range: -25 to +50^{O.
C

housed inside a white fiberglass-reinforced enclosure.}

^{Data Transmission /
Storage:

Model CR10X internal memory (produced by Campbell Scientific)
S/N :

- SM4M solid state storage module (produced by Campbell Scientific)
S/N :
Multiplexers Used:

1 - Model AM25T (produced by Campbell Scientific) S/N :

25 Channel multiplexer for thermocouple
Solar Panels Used:

US-21 Solar Panel (produced by Uni-Solar) S/N :
Power Sources and Regulator
being Used:

1 - Model PS12 Power Supply and Regulator (Campbell Scientific)
S/N:

- One sealed lead acid rechargeble battery

- 12 Volt, 7amp/hr recharging regulator, charged by the solar
panel
Air Temperature and
RH Sensor Used:

1 - Model HMP45C temperature & relative humidity (produced
by Vaisala) S/N :

ft. Lead

Sensor mounted inside an RM Young 12 plate Gill Radiation
Shield.

Sensor Height : a.g.l.
Wind Speed and Direction
Sensors Used:

1 - Model 3001-L Wind Monitor (produced by RM Young) S/N :
V3820006

ft. Lead

Sensor Height: a.g.l.
Net Radiation Sensor
Used:

1 - Model NR-Lite (produced by Kipp& Zonen) S/N : 990423

ft. Lead

Domeless

Sensor Height: a.g.l.
Surface Temperature
Sensor Used:

1 - Model Precision Infrared Thermometer (produces by Apogee)
S/N:

ft. Lead

Mounted used a movable camera mount

Sensor Height: a.g.l.
Barometric Pressure
Sensor Used:

1 - Model CS105 (Campbell Scientific) Viasala PTB101B Barometric
Pressure Sensor S/N:

Mounted inside the datalogger enclosure

Range: 600 - 1050 mbar to ~ 12,000ft.

Sensor Height: a.g.l.
Snow Depth Sensor Used:

1 - Model SR50-L Ultra Sonic Distance Sensor (produced by
Campbell Scientific) S/N:

Range : -45 to + 50^OC

ft. Lead

The snow depth sensor is mounted off of a horizontal arm clamped
to the tower.

Sensor Face Height: a.g.l.
TDR Probe Used:

3 - Model CS615 Water Content Reflectometers (produced by
Campbell Scientific )

ft. Lead

Sensors are buried ~11 ft. from tower & 3 ft. and 6 ft
from trees

Probe #1 buried horizontally at 2 in. b.g.l. in dark Organic
Layer S/N:

Probe #2 buried horizontally at 10 in. b.g.l. in light colored
soil low in organic matter S/N:

Probe #3 buried Vertically S/N:
Soil Thermocouple Array
Used:

1 - Custom soil thermocouple probe (produced by NOAA Lab)

Sensor array has 7 probes. At surface, 2,4,8,16,32,64 cm b.g.s.

Tower Used:

1 - CM10 Tripod Tower (produced by Campbell Scientific) S/N:

Equipment on Site provided by:

Solar Panel - SAHRA

Power Regulator for Solar Panel - SAHRA

10ft. Tripod tower - SAHRA

Datalogger & Enclosure - SAHRA

Storage Module - SAHRA

Multiplexers - SAHRA

Air Temp. & R.H. Sensor - SAHRA

Surface Temperature Sensor - SAHRA

Gill Shield SAHRA

Wind Monitor Sensor (RMYoung) - SAHRA

Net Radiometer - SAHRA

Barometric Pressure Sensor - SAHRA

Snow Depth Sensor - SAHRA

Solar Panel - SAHRA

Soil Thermocouple Array - NOAA lab

Thermistors

TDR Probes - SAHRA}