What are we Measuring with Eddy-Flux? 3-Dimensional wind speed and direction Incoming/outgoing radiation CO 2, O 2, and H 2 O vapor concentration Temperature.

What are we Measuring with Eddy-Flux?

• 3-Dimensional wind speed and direction

• Incoming/outgoing radiation

• CO2, O2, and H2O vapor concentration

• Temperature• Relative Humidity• Precipitation

Taken every 0.25 seconds!

Atmospheric-vegetation interaction

Climate change modeling

Net Primary Productivity, Etc.

Current Tower in KREW P301

Concrete base and guy wire footing

160’ total Height

Anti-climb signage and hardware

Power infrastructure on temporary scaffold at KREW P301

~1 kW Solar array

15 foot tall

Footings in soil/rock

Current Site LocationP301 tower in Kings River Experimental Watershed

Proposed Tower LocationsSoaproot Saddle Tower:37° 1'51.85"N119°15'23.15"W

Courtwright Tower:37° 3'59.75"N118°59'18.51"W

Instrumentation will provide an elevation transect from the rain dominated to snow dominated hydrologic regimes in Southern Sierra Nevada

The Heavy-Duty aluminum crank-up towers are designed to accommodate antennas with large wind surface areas up to 18sq.ft. and 125 lbs. of dead weight. These models will accommodate a large variety of commercially available rotors and a universal rotor plate is welded in place. This will allow a beam or other directional type antenna to be oriented. Telescoping towers are complete with a heavy duty 2” dia. X .125 wall x 8 ft. long mast, guy ears on each section, heavy-duty building bracket and tilt base.Model T-100HApprox Extended Height: 120 feetWeight: 400 lbs

Temporary base and Telescoping Tower Specifications

Power infrastructure similar to current P301 Tower.

Tower will be T-120H or smaller

Example of telescoping tower in Southern California at Pinyon-Juniper site

Example of telescoping tower in Southern California at Grassland and Oak/Mixed Conifer sites