{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

GEOG 1112 Notes 1

GEOG 1112 Notes 1 - lifetimes – changes hemispheric...

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

View Full Document Right Arrow Icon
Geography August 18, 2006 Introduction to Weather and Climate -The atmosphere is a mixture of gas molecules, suspended particles, and falling precipitation in an envelope surrounding the earth -The atmosphere strongly affects our day-to-day lives -Suspended particles allow precipitation to fall -Sports, transportation, attire, human health, agriculture and housing are all affected by the atmosphere -Meteorology – study of the atmosphere and the processes that cause “weather” -Climatology – examines weather elements over long periods -The source of all weather is the sun -Causes of the earth’s season: orbital alignment to the sun = seasonal variations in solar energy; revolution = the ecliptic plane; perihelion (January 3, 147 million km); aphelion (July 3, 153 million km); seasonal radiation variations = ~7%; earth receives about 7% less sunlight in July than in January -Earth rotation – once every 24 hours; rotational axis offset by 23.5º - axis is fixed (over our
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: lifetimes) – changes hemispheric orientation through orbit and causes seasons-Solstices – maximum axial tilt in relation to the sun (June and December); hemisphere axes inclined toward or away from sun – causes maximum or minimum solar radiation receipt-Subsolar point (where sun is directly over head) occurs at the declination-Solar angle – radiation is proportional to solar angle – higher angles equal reduced beam spreading which equals greater heating-Period of daylight – circle of illumination unequally bisects latitudes – day length changes across latitudes (everywhere gets 12 hours day/ 12 hours night on equinox)-Beam depletion (attenuation) – solar radiation diminished is relative to the path length (high solar angles = small energy reductions)-changes in energy receipt with latitude – winter hemisphere = energy deficits; summer hemisphere = energy surplus-lower angles = increased path lengths...
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