CHEM-5151_S05_L1

CHEM-5151_S05_L1 - Lecture 1: Introduction to Atmospheric...

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1 Required Reading: FP Chapter 1 & 2 Additional Reading: SP Chapter 1 & 2 Atmospheric Chemistry CHEM-5151 / ATOC-5151 Spring 2005 Prof. Jose-Luis Jimenez Lecture 1: Introduction to Atmospheric Chemistry Outline of Lecture 1 • Importance of atmospheric chemistry • Atmospheric composition: big picture, units • Atmospheric structure – Pressure profile – Temperature profile – Spatial and temporal scales • Air Pollution: – historical origin: AP deaths – Overview of problems: smog, acid rain, stratospheric O 3 , climate change, indoor pollution • Continue in Lecture 2
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2 Importance of Atmospheric Chemistry • Atmosphere is very thin and fragile! – Earth diameter = 12,740 km – Earth mass ~ 6 * 10 24 kg – Atmospheric mass ~ 5.1 * 10 18 kg – 99% of atmospheric mass below ~ 50 km – Solve in class: order of magnitude of mass of the oceans? Mass of entire human population? • Main driving forces to study Atm. Chem. are big practical problems: – Deaths from air pollution, smog, acid rain, stratospheric ozone depletion, climate change Structure of Course • Introduction •“Too l s – Atmospheric transport (BT) – Kinetics (ED) & Photochemistry – Aerosols (QZ) – Cloud and Fog chemistry • “Problems” – Smog chemistry – Acid rain chemistry Aerosol effects – Stratospheric Ozone – Climate change
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3 Interdisciplinarity of Atm. Chem. • Very broad field of both fundamental and applied nature: – Reaction modeling chemical reaction dynamics and kinetics – Photochemistry atomic and molecular physics, quantum mechanics – Aerosols surface chemistry, material science, colloids – Instrumentation analytical chemistry, electronics, optics – Air pollution toxicology, organic chemistry, biochemistry – Global modeling meteorology, fluid dynamics, biogeochemistry – Global observations aeronautics, space research – Air quality standards environmental policies and regulations • Comparatively new field: – First dedicated text book written in 1961 by P.A. Leighton (“Photochemistry of Air Pollution”)
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CHEM-5151_S05_L1 - Lecture 1: Introduction to Atmospheric...

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