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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)

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.
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