Earth’s energy balance Earth’s climate system Glacial cycles Natural variability Volcanic eruptions
Key terms: –Radiation (long wave vs. short wave) –Albedo –Convection, conduction, latent heat –Greenhouse effect
Troposphere Stratosphere Mesosphere Thermosphere Exosphere 0-15km 50-85km 15-50km km >400km
Equator 30˚S 60˚S Hadley Cell Ferrel Cell Polar Cell
Key Terms –Atmospheric layers (e.g. Troposphere and Stratosphere) –Hadley cell –Oceanic currents
Aphelion Perihelion
23.5˚N 23.5˚S 22.1˚-24.2˚
13,000 years Polaris Vega
Sunspot Plage
Key terms: –Milankovitch cycles Eccentricity –Aphelion –Perihelion Obliquity Precession –Sunspots Plages
Meters Seconds 10 6 (Week) (Hour) 10 8 (Year) 10 2 (Minute) Turbulence Tornadoes Thunderstorms Tropical Cyclones El Niño- Southern Oscillation
Neutral
El Niño / Warm event
La Niña / Cool event
Key terms: –Weather vs. Climate –El Niño-Southern Oscillation –Scales: time and spatial
H2OH2O CO 2 SO 2 H2H2 CO H2SH2S HCl HF
NOAA ESRL
Earth’s radiation is balanced through incoming (solar) and outgoing (longwave) radiation The atmosphere plays a role through greenhouse gases Earth’s climate can be affected by changes in the chemical composition of the atmosphere and changes in solar radiation
Broecker, Wallace S The great ocean conveyor. Oceanography 4(2): Broecker, Wallace S Glacial to interglacial changes in ocean chemistry. Progress in Oceanography 11(2): Kump, Lee R., James F. Kasting, and Robert G. Crane The earth system. Prentice Hall, San Francisco, U.S.A. McCormick, M. Patrick, Larry W. Thomason, and Charles R. Trepte Atmospheric effects of the Mt Pinatubo eruption. Nature : [USGS] Unites States Geological Survey. Volcanic Gases and Their Effects. Available from: (accessed February 20, 2014).