Surface temperature does not necessarily equal ambient temperature. In February when it is -25° at night the air can warm up to a relatively warm -11° during the day but the ground doesn't. Generally, the best temperature for asphalt installation ranges from 50 to 90, so most of the country can only install asphalt during the warmer months. If the air temperature continues to fall rapidly (perhaps after the passage of the arctic front from the north or a push of cold eastern Washington air into the passes), warming from the road surface and the warm ground below is overwhelmed by the cold air above and the slush mixture turns to ice. I once used an infrared thermometer and the temperature of the asphalt at 90 degrees F was already at least 137 degrees F; therefore very burning hot to stand on, and burning hot to walk on or a distance before a cooler sidewalk or a shade patch was needed to cool the feet. Skin burns at 140 degrees or higher. The temperature of the environment that the item is in impacts but is not equal to the item’s surface temperature. Our products shows the temperature that the item’s surface reaches. In terms of temperature, sound waves move faster in warm air and slower in cold air. So as sound moves through the atmosphere, some parts of the wave will be moving faster than the rest. Air temperature and air temperature cycles also act to select the plants and animals that make up the biological landscape of a region. This can be 10-plus degrees warmer than the actual air temperature, which is measured about 6 and a half feet above a grassy surface, typically at an airport location. SURFACE TEMPERATURE AIR TEMPERATURE 1 AVERAGE TEMPERATURE 1 OF AIR AND SURFACE TABLE 2 CAUCULATED AND OBSERVED TEMPERATURES OF BITUMINOUS PAVEMENT IN IDAHO Figure 5. And air temperature, along with precipitation, is a key determiner of climate, which we will explore in more depth in Chapter 7. Asphalt is a fantastic product, but it takes the right temperature on both the ground and in the air for proper installation. Exterior temperature in °C (average of the two portals) Air velocity (updraught=positiv) in m/s period 2 from 14.6.2002 to 8.8.2002 (tunnel open) period 3 from 24.8.2002 to 10.10.2002 (tunnel open) Figure 5: Relation between exterior temp erature and air velocity in the Gotschnatunnel 3.4. That day the road temperature was 52° while the air was a relatively cool 36°. The weather data (air temperature, solar radiation, R H, wind speed and wind direction) were collected using a weather station from an instrumentation pavement section near the city of Albuquerque, New Mexico from October 2012 to October 2013.Further new data was collected from October 2014 to June 2015 to validate the models. F F The highest air temp I ran in was 101 degrees and I got a nice blister on my left foot from the hot road. Five important factors influence air temperature: Latitude. 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