AIR MASSES Lect 14

AIR MASSES Lect 14 - AIR MASSES FRONTS Air Mass an immense...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
AIR MASSES & FRONTS Air Mass: an immense body of air, some 1600+ km across and 1-3 km thick, with relatively homogeneous physical properties (density, T° & moisture) at a given altitude Classification Scheme: 2-letter abbreviations are used to indicate Source Region , characteristics, & Types of Air Masses * first letter: reference to surface over which it develops & thus the level of humidity c == continental : forms over a landmass = low water vapor content; Dry m == maritime : forms over an ocean = high water vapor content; Humid * second letter: reference to latitude or source region of origin & thus T° (cold vs. warm) A == arctic ; bitterly cold P == polar ; very cold T == tropical ; warm E == equatorial ; very warm Source Regions: area in which air mass originates ** source regions determines initial characteristics of the air mass; cold vs. warm, dry vs. humid Types of Air Masses: * Continental Arctic (cA) : Arctic basin & Greenland; bitterly cold & dry; Stable * Continental Polar (cP) : Interior Canada & Alaska; Cold & dry; Stable * Continental Tropical (cT) : northern interior Mexico & sw U.S. (Summer only);
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the 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