Low pressure readings are usually associated with

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: an area of low pressure. Low pressure readings are usually associated with storm systems. Tornadoes and hurricanes can produce very low barometric readings. Air Movement and Flow 6-1 • Fluids (air and water) flow from areas of high pressure to areas of low pressure. • Change in pressure across a horizontal distance is a pressure gradient. • Greater the difference in pressure and the shorter the distance between them, the steeper the pressure gradient and the stronger the wind. • Movement of air across a pressure gradient parallel to Earth’s surface is called a wind and winds are named for the direction from which they come. Isobars in millibars, the closer the isobar the stronger the winds Rain Low Pressure High Pressure The Atmosphere in Motion • Atmospheric pressure is a measure of the force pressing down on the Earth’s surface from the overlying air. • Pressure is often measured in different units including: – atmospheres (1 atmosphere is the average atmospheric pressure at sea level), – millibars (1 atmosphere = 1013.25 millibars), –...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern