GEOG 205 Lecture Notes - Chlorophyll, Lithosphere, Downwelling
Document Summary
April 3rd, 2013 remember: we talked about astronomical variations in relation to climate these will definitely be on the final**: eccentricity has a period of 100 000 years variance of solar output of 0. 5. Earth"s orbital cycles trigger initial warming, first reflected in arctic. Arctic warming caused large amounts of ice to melt causing large amounts of fresh water to flood into oceans influx of fresh water disrupted atlantic ocean circulation. Southern hemisphere & oceans warmed first this warming released co2 into atmosphere causing entire planet to warm via increased greenhouse effect. Approximately 100 gt of c cycles between land & atmosphere each yar. Plants absorb c in photosynthesis reflects plant growth & decay. Humans, bacteria & animals produce energy through respiration. Plant matter + oxygen carbon dioxide + water + energy if plants are storing c, what happens when we chop down forests/disturb soils/burn wood? the ocean & co2. Ocean contains physical & biological c pump.
