A decision support tool for highway maintenance a first principle thermal mapping model
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A Decision Support Tool for Highway Maintenance: A First Principle Thermal Mapping Model. by Peter Gauer. & Edward E. Adams WTI / MSU Bozeman, MT Allen R. Curran ThermoAnalytics Inc. Calumet, MI Sponsored by Montana Department of Transportation. Potential Benefits.

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A decision support tool for highway maintenance a first principle thermal mapping model

A Decision Support Tool for Highway Maintenance:A First Principle Thermal Mapping Model

by Peter Gauer

&

Edward E. Adams

WTI / MSU Bozeman, MT

Allen R. Curran

ThermoAnalytics Inc. Calumet, MI

Sponsored by Montana Department of Transportation


Potential benefits
PotentialBenefits

  • Information for Maintenance Decisions

    • De-Icing

    • Anti-Icing

  • Information for Public

    • Freeze Warning

    • Road Weather Conditions


Basic physics
Basic Physics

  • Surface Heat Budget

    • G (1 - )

    • L + L

    • H

    • LE

    • QG

    • 0


Model chain

Model Chain

  • Meteorological Input Data

    • Radiation (downward)

    • Wind Speed

    • Air Temperature

    • Relative Humidity

    • Precipitation Rate

 ETA

(40 km)


I 90 bozeman pass test area

MELV

MBZH

I-90 Bozeman Pass (Test Area)


Meso scale model i bozeman area

M

[m/s]

Meso-Scale Model I (Bozeman Area)

Simulation were made using ARPS developed by the Center of Prediction and Analysis of Storms

Wind field simulation for Bozeman Area

19/11/2000 19:00 UTC


Meso scale model ii mbzh

G

L

[W/m2]

[W/m2]

M

Ta

[C]

[m/s]

Meso-Scale Model II (MBZH)

Comparison between Simulation and Measurements: 05/12/2000-05/14/2000


Wintherm i i 90 rocky canyon
WinTherm I (I-90 Rocky Canyon)

Thermal Map

Period

05/06/2000 06:00 MDT

05/08/2000 14:00 MDT

Surface Temperature Tsfc

Color Coded in C

Temperature at MM319


Wintherm ii i 90 mm319

Tsfc

[C]

WinTherm II (I-90 MM319)

Comparison between 2 Simulations and Measurements


Wintherm iii i 90 mm319

Tsfc

[C]

WinTherm III (I-90 MM319)

Comparison between Simulation and Measurements


Concluding remarks
Concluding Remarks

  • A successful implementation of the thermal model chain can be a useful tactical decision support tool for winter highway management.

  • Coupled with a snowpack model, it can also be a tool to predicted snowpack stability and to forecast avalanche hazard threatening highway sections.


What need to be done further
What need to be done further?

  • Meteo-Model (Improvement of the Meteorological Input Data for Wintherm):

    • Cloud Cover Modeling  Radiation

    • Nesting:

      • Grid Resolution

      • Number Nesting Steps

  • Thermal Mapping

    • Grid Resolution

    • Adaptive Meshing for Critical Areas

    • Influence of Surface Properties

      • Albedo for Snow/Ice Covered Pavements

      • Melting, Icing, Sublimation, Condensation

      • etc.