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175 400,000 300,000 200,000 100,000 Years Before Present 1. How much did the level of CO2 change between the last peak glaciation (~18,000 before the Industrial Revolution) and the start of the Industrial Revolution (-1850)? In other words, how much did the level of carbon dioxide change (in parts per million; ppm) between the bottom and middle circles above? 2. How many parts per million did the level of CO₂ increase per century over the 18,000-year period leading up to the Industrial Revolution? To do this, take 18,000 years and put it in centuries (100 years per century). Then divide your answer from Q1 by the number of centuries. 3. How much has the level of CO₂ increased from 1850 until present? (Top circle-middle circle) 4. How many parts per million (ppm) did the level increase per century over the last 172 years? 5. Take your rate of increase from Q4, and divide it by the rate of increase from Q2. Put the answer below. What you just figured out is how many times greater the current rate is compared to the natural background rate from the last glaciation until the start of the Industrial Revolution. 6. When I started teaching climate lectures in 2010, the level of CO₂ in the atmosphere was-385 ppm. How many times greater is the rate of increase from 2010 to present compared to the rate in Q2?

175 400,000 300,000 200,000 100,000 Years Before Present 1. How much did the level of CO2 change between the last peak glaciation (~18,000 before the Industrial Revolution) and the start of the Industrial Revolution (-1850)? In other words, how much did the level of carbon dioxide change (in parts per million; ppm) between the bottom and middle circles above? 2. How many parts per million did the level of CO₂ increase per century over the 18,000-year period leading up to the Industrial Revolution? To do this, take 18,000 years and put it in centuries (100 years per century). Then divide your answer from Q1 by the number of centuries. 3. How much has the level of CO₂ increased from 1850 until present? (Top circle-middle circle) 4. How many parts per million (ppm) did the level increase per century over the last 172 years? 5. Take your rate of increase from Q4, and divide it by the rate of increase from Q2. Put the answer below. What you just figured out is how many times greater the current rate is compared to the natural background rate from the last glaciation until the start of the Industrial Revolution. 6. When I started teaching climate lectures in 2010, the level of CO₂ in the atmosphere was-385 ppm. How many times greater is the rate of increase from 2010 to present compared to the rate in Q2?

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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Guida - Assignment 4: Climate Change - Rates of CO2 Change Atmospheric Carbon Dioxide Levels 400 375 350 325 300- 275 250 225 200- 175 Atmospheric Carbon Dioxide -Vostok Ice Core 400,000 Law Dome Ice Core Mauna Loa Instrumental Measurements 300,000 ~420 ppm Current Level 275 ppm ww ~180 ppm 100,000 200,000 Years Before Present 1. How much did the level of CO₂ change between the last peak glaciation (~18,000 before the Industrial Revolution) and the start of the Industrial Revolution (-1850)? In other words, how much did the level of carbon dioxide change (in parts per million; ppm) between the bottom and middle circles above? 2. How many parts per million did the level of CO2 increase per century over the 18,000-year period leading up to the Industrial Revolution? To do this, take 18,000 years and put it in centuries (100 years per century). Then divide your answer from Q1 by the number of centuries. 3. How much has the level of CO2 increased from 1850 until present? (Top circle-middle circle) 4. How many parts per million (ppm) did the level increase per century over the last 172 years? 5. Take your rate of increase from Q4, and divide it by the rate of increase from Q2. Put the answer below. What you just figured out is how many times greater the current rate is compared to the natural background rate from the last glaciation until the start of the Industrial Revolution. 6. When I started teaching climate lectures in 2010, the level of CO₂ in the atmosphere was ~385 ppm. How many times greater is the rate of increase from 2010 to present compared to the rate in Q2?
Transcribed Image Text:Guida - Assignment 4: Climate Change - Rates of CO2 Change Atmospheric Carbon Dioxide Levels 400 375 350 325 300- 275 250 225 200- 175 Atmospheric Carbon Dioxide -Vostok Ice Core 400,000 Law Dome Ice Core Mauna Loa Instrumental Measurements 300,000 ~420 ppm Current Level 275 ppm ww ~180 ppm 100,000 200,000 Years Before Present 1. How much did the level of CO₂ change between the last peak glaciation (~18,000 before the Industrial Revolution) and the start of the Industrial Revolution (-1850)? In other words, how much did the level of carbon dioxide change (in parts per million; ppm) between the bottom and middle circles above? 2. How many parts per million did the level of CO2 increase per century over the 18,000-year period leading up to the Industrial Revolution? To do this, take 18,000 years and put it in centuries (100 years per century). Then divide your answer from Q1 by the number of centuries. 3. How much has the level of CO2 increased from 1850 until present? (Top circle-middle circle) 4. How many parts per million (ppm) did the level increase per century over the last 172 years? 5. Take your rate of increase from Q4, and divide it by the rate of increase from Q2. Put the answer below. What you just figured out is how many times greater the current rate is compared to the natural background rate from the last glaciation until the start of the Industrial Revolution. 6. When I started teaching climate lectures in 2010, the level of CO₂ in the atmosphere was ~385 ppm. How many times greater is the rate of increase from 2010 to present compared to the rate in Q2?
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