GEOG220 Lecture Notes - Lecture 1: Antarctic Circle, June Solstice, Arctic Circle
21 Mar 2017
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Document Summary
The earth"s north pole currently points toward the star. June solstice: takes place on june 21st or 22nd, sun directly overhead at (cid:884)(cid:885). 5 degrees north at noon (cid:523)tropic of cancer(cid:524) northern. Hemisphere maximum tilt towards the sun: days longer in northern hemisphere, finally reach northern hemisphere summer. December solstice: december 21st or 22nd, sun directly overhead at 23. 5 degrees south (tropic of capricorn) s. s tilted toward the sun, days are short in northern hem, northern hemisphere winter. Spring (vernal) / autumnal equinox: march 21st or 22nd / september 21st or 22nd, sun directly overhead at noon at equator, sun at horizon all day at poles. These earth/ sun relationships (cid:498)control(cid:499) the energy receipt at the earth"s surface. **high latitude areas of the earth go through much larger temperature variations over the year than areas near the equator. High latitude areas have a larger annual temperature range than regions near the equator due to earth/sun relationships.
