Radiation Inversion
Only for a very short time. Recorded weather readings are taken at a height of 5 feet above the ground. If the ground has been frozen, the air temperature at ground level will be a few degrees cooler than the official temperature. It is not unusual for snow to remain for days or even weeks in shaded areas when the air temperature is well above freezing during the afternoons but near or below freezing at night.
Rain occurs when the temperature between the cloud and the ground is above freezing (0°C). This allows snowflakes to melt into raindrops before reaching the ground.
The temperature decreases by about 6.4 degrees Celsius for every 1000 meters increase in altitude. Therefore, at 1400 meters above sea level, the temperature is estimated to be about 9 degrees Celsius cooler than at sea level.
The height above the ground is called altitude. The word is sometimes used to mean elevation, which is the height above mean sea level.In aviation, altitude is usually expressed in feet ASL (above sea level), but can also be stated as feet AGL (above ground level) for purposes of avoiding obstructions. Properly set barometers can determine height above MSL, while radar altimeters are used to measure AGL.
How hot does it have to be for ice to turn into water? Its the same thing. Ice melts at anything above 0º Celsius (32º Fahrenheit). Both the air and ground temperature would have to be above 0º. If just the air temperature was above 0º, then you would end up with sheet ice, as the top snow would melt to be re-frozen when it comes into direct contact with the ground.
Air temperature is typically measured using a thermometer placed in the air, often at a specific height above the ground to ensure consistency. The temperature reading is usually captured in degrees Celsius or Fahrenheit.
Because the temperature is often a few degrees colder right at the surface. This is because cold air sinks, and if it is not mixed (as under calm conditions) the temperature will be colder at the surface than it is 2 meters above ground, where temperature is officially measured.
In order to walk from 15 below ground to 45 above ground, you have to climb a total of 60 floors.
Temperature readings are typically measured on a scale, such as Celsius or Fahrenheit. To get a higher reading on a thermometer, the temperature must increase on that scale. For example, if you have a thermometer in Celsius and the current reading is 20°C, the temperature would need to increase to above 20°C to see a higher reading.
The temperature of the air high above the ground can vary significantly depending on factors such as altitude and weather conditions. However, in general, temperatures tend to decrease with altitude, so it is likely that the temperature of the air high above the ground would be below 0 degrees Celsius.
less
Where air planes fly, the temperature is below freezing.
crystallization above ground and crystallization below ground
The hottest air temperature ever reliably recorded in a desert was 134 degrees F in Death Valley of the Mojave Desert in California on July 10, 1913. An even warmer temperature of 136 degrees was recorded a few years later in Libya but that has been discounted as inaccurate as it was not properly measured by untrained Italian soldiers. A recent ground temperature was measured by a satellite in Iran that was even hotter but the ground temperature does not reflect the temperature of the air above it. Anyone who has walked barefoot over an asphalt parking lot in summer can attest to that.
The hottest air temperature ever reliably recorded in a desert was 134 degrees F in Death Valley of the Mojave Desert in California on July 10, 1913. An even warmer temperature of 136 degrees was recorded a few years later in Libya but that has been discounted as inaccurate as it was not properly measured by untrained Italian soldiers. A recent ground temperature was measured by a satellite in Iran that was even hotter but the ground temperature does not reflect the temperature of the air above it. Anyone who has walked barefoot over an asphalt parking lot in summer can attest to that.
The hottest air temperature ever reliably recorded in a desert was 134 degrees F in Death Valley of the Mojave Desert in California on July 10, 1913. An even warmer temperature of 136 degrees was recorded a few years later in Libya but that has been discounted as inaccurate as it was not properly measured by untrained Italian soldiers. A recent ground temperature was measured by a satellite in Iran that was even hotter but the ground temperature does not reflect the temperature of the air above it. Anyone who has walked barefoot over an asphalt parking lot in summer can attest to that.
The hottest air temperature ever reliably recorded in a desert was 134 degrees F in Death Valley of the Mojave Desert in California on July 10, 1913. An even warmer temperature of 136 degrees was recorded a few years later in Libya but that has been discounted as inaccurate as it was not properly measured by untrained Italian soldiers. A recent ground temperature was measured by a satellite in Iran that was even hotter but the ground temperature does not reflect the temperature of the air above it. Anyone who has walked barefoot over an asphalt parking lot in summer can attest to that.