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it means it is being shipped by ground (truck, train, boat, etc,) and air is of course by plane or helicopter.
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What is the difference between surface mail and parcel mail?
Surface mail is overseas mail that goes by ship rather than by air. Parcel mail is for parcels.
What is air parcel?
An air parcel is an imaginary body of air with the basic properties of atmospheric air.
What is an air parcel?
An air parcel is an imaginary body of air with the basic properties of atmospheric air.
When air is saturated relative humidity is?
When a parcel of air is saturated with water vapor the relative humidity of that parcel of air is 100%.
How would heat change the density of a parcel of air?
how heat would change the density of a parcel of air?
When a parcel of air moves upward it expands and cools?
When a parcel of air moves upward, it expands and cools due to the altitude.
When the environmental lapse rate is less than the dry adiabatic rate a parcel of air will be?
Then the air is called "stable" because a parcel of air from the surface lifted upward will drop in temperature at the dry adiabatic lapse rate. If the environmental lapse rate is less, then the lifted air will be cooler and more dense than the surrounding air, and thus stop moving upward through the atmosphere.
When a parcel of air that is less dense than the surrounding air is?
saturated
How air get cooled?
Warm air rises....and when it rises it becomes cooler. ...If the pressure of surrounding air is reduced then the rising air parcel will expand. The molecules are doing work as they expand . This will affect the parcel's temperature.
How do convection uplift occurs?
A parcel of air is uplifted when it initially gains heat from the surface causing convective uplift.When the air is warmed by the surface it will expand and become less dense relative to air that surrounds it. - See more at: http://www.chacha.com/question/can-you-briefly-describe-how-convective-uplift-occurs#sthash.JinBHwPh.dpuf
What is lifting condensation level?
Lifting Condensation Level is altitude at which clouds begin in a rising parcel of air. Lifting condensation level(LCL) can be said to be the level to which an unsaturated air parcel can be lifted adiabatically before it becomes saturated.Remember,this unsaturated air parcel is moist
What is a parcel in relation meteorology?
A parcel refers to a parcel of air that is used to conceptualize certain processes in the atmosphere. It is useful to use a discrete unit like a "parcel" of air when learning certain processes, such as adiabatic processes when air rises and sinks. The is because you want to know how some unit of unadulterated air will behave when you raise or lower it in the atmosphere and change the pressure applied to it, for example, whereas air in the "environment" is free to mix, which complicates things.
