IBDP Environmental Systems & Societies Solutions Chapter 6 Notes

Atmospheric Systems and Societies


These notes have specially been curated by expert teachers to simplify and enlighten concepts given in IB ESS SL. The notes are comprehensive in nature and are sufficient to study the chapter in depth and one need not look for other resources beyond the notes provided on our website which can be accessed for free. The notes for Atmospheric Systems and Societies IBDP SL are available on our official website and can be downloaded for free. You are one click away from obtaining all that you need to score well in IB ESS SL.

The material made available on Tychr’s website is available for all IBDP subjects and is specially curated after an extensive amount of effort to ensure that the notes are in consonance with the IB curriculum and are an amalgamation from various textbooks prescribed by the IBO. Students often face a challenge understanding concepts, especially concepts that are new and tricky, these IB ESS Notes will help the student cover the chapter of Atmospheric Systems and Societies entirely while explaining every concept in a detailed and easy way.

The chapter on atmospheric systems and societies begins with an introduction to the atmosphere and its composition and variation with altitude. The energy from the sun in the form of insolation is not totally absorbed by the earth. Most of it is reflected into the atmosphere by clouds or is absorbed by gases. Human activities like deforestation and burning of fossil fuels also affects the composition of the atmosphere leading to the greenhouse effect which raises the earth’s temperature. Next, we talk about the depletion of ozone caused by halogens and the impact the depleted ozone layer has on human health.

The unit discusses methods to reduce ozone depletion by using alternatives to halogens. The Montreal protocol in 1987 is an international agreement that raised awareness regarding ozone depletion and put forward ways to deal with it. Photochemical smog which is formed because of pollution by gases like carbon monoxide, carbon dioxide, soot, oxides of nitrogen, etc. interferes with the growth of plants and damages human health. We also talk about various strategies to reduce pollution like carpooling, walking or using bicycles for traveling and reforestation. Towards the end the phenomena of acid rain and its effect is seen.