ENVIRSC 2EI3 Lecture Notes - Lecture 6: Kyoto Protocol, Lyme Disease, Radiative Forcing
30 Nov 2017
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Document Summary
Weather: atmospheric conditions over a short time period (day/week) Climate: composite of the variety of day-to-day weather. Climate change: long term shifts in the climate of a specific location, region, planet. Global warming: changes in the average surface temperatures. Surface of the earth is unequally heated by the sun: this results in varied climates across different geographies, axial wobble, variation of the tilt affect climate. Impact can be traced in ice samples, fossilized algae, banding pattern of corals: natural disruptions may influence climate (ex. Evidence of ongoing climate change: since 19th century, average global temperature has increased by 0. 6 degrees celsius. Increase in temperature of 20th century is largest of any centuries, known from tree ring, ice core, coral reef data: ghg concentrations have been increasing, co2, nitrous oxide emissions are higher now than. 400,000 years: reduction in permafrost, snow cover, retreat of glaciers worldwide. Climate models: evaluate radiation dynamics, surface processes, chemistry, time step, resolution.
