Surface pressures commonly range from 92.0 kPa to 103.0 kPa, depending on the surface topography and weather conditions of the area. The surface pressure value should be entered in kiloPascals (kPa) or pounds per square inch (PSI). The calculation is flawed if the wrong data is used. If your data from a surface map, it is highly probable the pressure provided is a sea level pressure. Verify that you enter the reported surface pressure rather than the sea level pressure. The final data required is that of surface pressure. Please keep in mind that the dewpoint temperatures are NEVER greater than observed temperatures. Here is more information of Celsius, Fahrenheit, Kelvin, RĂ©aumur, and Rankine Temperature Conversion and here is more information provided by our Dew Point And Relative Humidity Calculator. Enter the surface temperature also in degrees Celsius or Fahrenheit (although all such temperature calculations are done essentially in Kelvin), and enter the reported dewpoint temperature in degrees Celsius or Fahrenheit. They are surface temperature, surface dewpoint, and surface pressure. The LCL conditions are calculated using only three atmospheric input parameters that are commonly measured and reported during most local televised weather forecasts. ![]() This calculator was designed to calculate the lifting condensation level (LCL) for a mass of air lifted from the surface however, you can also calculate the LCL conditions for an air parcel at any other pressure level by substituting the appropriate values. This calculator requires the use of Javascript enabled and capable browsers.
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