Add Page41%5Insert Table Chart Text Shape Media CommentUsing the equations from the last page, work out and answer the following questions:151. If a parcel of air at 15 °C has a specific humidity of 4.6 g/kg, what is the relative humidity ofthat parcel?6.0The relationship between humidity and temperature, assuming the constant humidity is that they areinversely proportional. If temperature increases it will lead to a decrease in relative humidity.The airwill become drier, whereas when temperature decreases, the air will become wet means the relativehumidity will increase.2. If the parcel were warmed to 25 °C with no change in water vapor content (SH), what wouldbe its new relative humidity?3. Considering your answer for question 2, describe the relationship between relative humidityand temperature, assuming constant specific humidity.The dew point temperature of a volume of air is the temperature to which the air must be cooled toreach a relative humidity of 100 %. Said another way, the dew point is the temperature at which a parcelof the air becomes saturated.4. What is the dew point temperature of an air parcel with a specific humidity of 11.2 g/kg?15. A parcel of air at 20 °C has a relative humidity of 40 percent. What is its dew pointtemperature?6. Considering your responses to the questions above, do you need to know an air parcel'stemperature or its specific humidity to determine its dew point temperature?Collaborate Add PageTemperature°F23324150)Part 1: Measures of Atmospheric HumidityAs you know, the atmosphere has only a limited ability to store water vapor. When that limit isreached, the atmosphere is said to be saturated. More than anything else, the saturation point isdetermined by temperature. For example, Table 1 shows water vapor capacity on a mass basis.5968778695104°C5Table 1: Saturation specific humidity at 1013 mb (sea level pressure).()BERGEHE1015202530Insert Table35Chart Text Shape Media Comment+(Unit 5 lab Moisture in the AtmosphereSaturation SpecificHumidity (g/kg)2.64.05.78.111.215.+20.928.237.549.655¹5045403530We can find SH and SSH values as follows:Vapor (g/kg)2520151050SH = RH (SSH)SSH == SH/RH-5 0Relative Humidity (RH) is the proportion of the amount of water vapor present at a given temperaturerelative to the maximum quantity that could be present. In other words, relative humidity is the ratio ofthe specific humidity (SH) of a given volume of air to the saturation specific humidity (SSH) of a volume ofair at the same temperature. We express relative humidity as a percentage.We can determine relative humidity by using the following equation:RH = SH/SSH (100)5 10 15 20 25 30 35 40Temperature (°C)Collaborate

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1. If a parcel of air at 15 °C has a specific humidity of 4.6 g/kg, what is the relative humidity of that parcel?