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Mount Tamalpias Mobile Transect. Chris Stumpf Brittani Ryan Denise Balukas. Mill Valley and Mount Tam. Mill Valley elevation is 10 meters ( 32 feet ) East Peak elevation is 781 meters ( 2570 feet ). The mobile transect route. GPS. Mapview.

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Mount tamalpias mobile transect
Mount Tamalpias Mobile Transect

Chris Stumpf

Brittani Ryan

Denise Balukas


Mill valley and mount tam
Mill Valley and Mount Tam

Mill Valley elevation is 10 meters ( 32 feet )

East Peak elevation is 781 meters ( 2570 feet )



Advantages of using a mobile transect to collect data:

Ability to take direct measurements.

Ability to collect data from many points along the route of transect in order to measure the temperature profile of the mountain valley system.

Disadvantages of mobile profiling:

Solar heating may influence measurements due to the time it takes to complete the transect.

No direct route up the mountain, data collected from eastern and western sides of the mountain.


Mobile transect vehicle
Mobile Transect vehicle

Simple design of the roof rack and PVC pipe to attach instruments to the vehicle.

Anyone can make this at home!!!


The plan
The Plan

  • Four transects

  • 7am, 10:30am, 3:30pm, 7pm

  • Collected data from datalogger at the top and bottom of the mountain after every trip

  • Checkpoints along transect



Instrumentation
Instrumentation collected by the instruments.

-CR1000 Datalogger

-Thermistor/Hygristor (HMP45C)

-Thermocouple

-Barometric Pressure Sensor(CS106)

-Trimble GPS


Fan attached to to the back of the PVC pipe collected by the instruments.


Datalogger collected by the instruments. insulated and placed in the trunk of the vehicle


Temperature profile
Temperature Profile collected by the instruments.

Thermocouple

Geopotential height (m) vs. Temperature (C)

Red: 7:00AM, Pink: 7:00PM, Blue: 10:30AM, Green: 3:30PM


Temperature inversion
Temperature Inversion collected by the instruments.

http://minnesota.publicradio.org/collections


Temperature variation with height up the mountain
Temperature variation with height collected by the instruments.(Up the mountain)

HMP45C

Geopotential height (m) vs. Temperature (C)

Thermocouple


Potential temperature with height down the mountain
Potential Temperature with height collected by the instruments.(Down the mountain)

HMP45C

Geopotential height (m) vs. Potential temperature (K)

Thermocouple


Potential temperature with pressure
Potential Temperature with Pressure collected by the instruments.

HMP45C

Pressure (mb) vs. Potential temperature (K)

Thermocouple


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