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Figure 1. Stations included in the Pennsylvania mesonet.
Figure 2. Contours of temperature lines.
Figure 3. Frequency of observations taken by RWIS network during 1 month.
Figure 4. Early example of a quality assurance report on RWIS data. Clicking on the station designation provides facility details.
Figure 5. Sample metadata page for an RWIS site.
Figure 6. Tabletop exercise from roadway managers training session.
Figure 7. Comparison of RWIS temperatures with ASOS temperatures as a function of RWIS wind speed for 12 stations.
Figure 8. Comparison of ASOS-RWIS wind speeds as a function of direction for four stations.
Figure 9. Comparison of RWIS dewpoint temperatures with ASOS dewpoint temperatures as a function of RWIS wind speed for 12 stations.
Figure 10. Locations of the NDOT stations that are available for analysis on the DRI Web site.
Figure 11. A schematic of the DRI-developed real-time forecasting system that assimilates NDOT data in the first 12 hours of the pre-forecasting time.
Figure 12. Geographical setup of the real-time MM5 forecasting domains.
Figure 13. Time series of wind speeds measured at NDOT Washoe Valley station and simulated with MM5 without FDDA, with Run A FDDA options, and with Run C FDDA options.
Figure 14. Vertical profiles of temperature, dewpoint temperature, and winds measured by radiosonde in Reno, NV, on March 31, 2003 at 00 UTC (4 p.m. local time) (left panel) and on April 1, 2003 at 12 UTC (4 a.m. local time) (right panel).
Figure 15. Time series of temperature (upper panel) and wind speed (lower panel) at the Reno, NV, station for the period from April 1–2, 2003.
Figure 16. A schematic of the NDOT pavement temperature model with its major physical components.
Figure 17. Computer screen with a menu for predicted meteorological parameters to be input for the pavement temperature model run.
Figure 18. Computer menu screen with a list of stations for which the pavement temperature forecast can be obtained.
Figure 19. A time series of the forecasted pavement temperature at the Incline Village station for the test case for the period of 3 a.m. on October 31, 2002, to 3 a.m. on November 1, 2002.
Figure 20. Time series of the pavement temperature predicted by the NDOT IceCast Pavement Model for various changes in meteorological input parameters with respect to the baseline run.
Figure 21. Change of the predicted minimum pavement temperature as a function of changing meteorological inputs by step units.
Figure 22. NYSDOT RWIS stations for which manually downloaded data have been analyzed.
Figure 23. Panoramic views of three of the weather stations studied.
Figure 24. Wind roses and transmission factors for surface weather stations.
Figure 25. Locations of MesoWest stations (plus symbols), RWIS stations (green triangles), and Union Pacific Railroad stations (yellow diamonds).
Figure 26. Summary of current weather and road state in Utah available in MesoWest.

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