Atmosphere & Global Climate Change — DU B.Sc. (Hons.) Environmental Science Previous Year Question Papers

6. Evaluate international climate change policies,' including the Clean Development Mechanism, carbon credits, and global agreements. (15) Semester III 1. Write shert notes on any three of the following: . (a) Layers of the atmosphere (b) Urban heat island and microclimate (c) Smog and its types (d) Southern Oscillation Index Differentiate between any three of the following: (a) Western disturbances vs. tropical cyclones (b) Plume rise vs. mixing height (c) Holocene monsoon vs. present-day monsoon (d) Temperature vs. atmospheric stability (a) Describe the development and variability of the Indian monsoon. ( 10) (b) What is the impact of monsoon changes on the Indus Valley civilization? (5) (a) Explain the chemistry of photochemical smog formation. ( 10) (b) What roles do hydroxyl and hydroperoxyl radicals play in atmospheric cleansing? (5) 5. (a) Summarize the climate change indicators from Earth's paleoclimatic records. ( 10) (b) What are the biological responses to global warm ittg'? coLi (s)