what is the difference between air temperature & air pressure?

Answer 1

They are completely different properties. Temperature refers to the amount of internal energy in the particles of air, while pressure refers to the force per unit area exerted by air on the surface of the Earth or on the walls of a container.

Answer 2

Air temperature is the measurement of the amount of energy the air molecules contain. Air pressure is the weight the air due to gravity, or the force that the air exerts on its' surroundings. In a closed container, such as a balloon, if the temperature inside the balloon decreases, (like if you inflated it inside a warm house and then took it outside into the cold) it will shrink because the air inside it becomes denser and exerts less pressure on the walls of the balloon. This is how the pressure and temerature are related to each other.

Answer 3

The GISP2 automatic weather station (AWS) site on the Greenland Crest measured the snow temperature profile at the levels of 0.50, and 0.25 meters above the snow, and at 0.0, 0.25, 0.50, 1.00, 2.00, 4.00, 7.00, and 10.0 meters below the snow level at the time of installation. Snow temperature profile data were collected from 1 July 1992 to 14 November 1996. An acoustic depth gauge (ADG) was installed at the GISP2 AWS site along with the conventional meteorological observations of wind speed and direction, air temperature, air pressure, relative humidity, and vertical air temperature difference between 3.9 and 0.5 meters.

Based on the experience gained on the Greenland Crest a similar setup is planned for at least three sites in Antarctica; Siple Dome, South Pole, and the planned drilling site near Byrd station. One difference is that the snow temperatures above the snow surface at the time of installation will be at 1.00, 0.75, 0.50, and 0.25 meters above the surface level at the time of installation.

The snow temperature profile data are used to estimate the air temperature at 3.9 m for comparison to the measured air temperature at 3.9 m. The temperature differences between measurement levels can then be checked against an indeptendent temperature measurement. This provides a check the measure sytem including the zero and the gain of the amplifier. The accepted snow temperature data are used to form 24 hour means for each day of the year. Harmonic analysis of the annual cycle provide the amplitude and phase angles for the first three harmonics. The comparison of the phase angle to the log of the temperature amplitude provide a test on the measuring system. The change in the phase angle of the first hamonic of the annual snow temperature cycle compared to the air temperature first harmonic will indicate the accumulation of snow over the temperature profile. The phase angle for each temperature harmonic as a function of depth will determine the thermal diffusivity of the snow. The snow temperatures can be replaced by the saturation vapor pressure of ice and can be used to estimate the diffusion of water vapor in the snow.

The acoustic depth gauge should provide the date and amount of snow accumulation at the site. The date of the accumulation can be related to the synoptic weather system that produced the precipitation. The amount of the accumulation can be related to the visual stratigraphy in the snow. The temperature structure in the visual stratigraphy can be used to estimate the possible modification of the chemical signatures in the snow. Chemical analysis of the identified snow layer over several years after the snow accumulation will determine the posssible modification of the the chemical signatures over several years with comparison to the results based on the temperature structure. There will be a series of diagrams presented that illustrate the use of the AWS measurements in the air and the snow.

Answer 4

Take a car tire for example...

It is filled up with air...

Temperature is how hot or cold the air inside the tire is.

Pressure is how MUCH air is inside the tire.