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Human impacts on climate

Human impacts on climate. KGA171 The Global Geography of Change Presented by Associate Professor Elaine Stratford Semester 1. Clouds over the future?. Part 1. Looking forward, looking back. Revising Module 4 Lecture 2.

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Human impacts on climate

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  1. Human impacts on climate KGA171 The Global Geography of Change Presented by Associate Professor Elaine Stratford Semester 1

  2. Clouds over the future?

  3. Part 1 Looking forward, looking back

  4. Revising Module 4 Lecture 2 What are solar activity cycles? Describe their ‘periodicity’ or cyclical frequency. What might a decline in their periodicity or intensity mean for temperatures on Earth? Illustrate your answer with examples. Why and how are ice cores useful in measuring climate change over long periods of time? Exemplify your response by reference to Dome C and/or Vostok. Define ‘glacial’ and ‘interglacial’, their apparent or documented durations on average, and their main characteristics. How might a shoreline provide evidence of past climate change? How about tree rings? What might ocean drilling reveal about changes to climate in the past? Illustrate your response with reference to the Mayans. List and explain four points that help explain climate’s impact on humans. Man thinking

  5. Learning Objectives Module 4 Lecture 3 KGA171 demonstrate knowledge of geographical concepts, earth and social systems and spatial patterns of change create and interpret basic maps, graphs and field data identify and analyse different viewpoints to contribute to debates about global development communicate in reflective and academic writing, referencing literature when needed Be able to • describe some of the ways in which human activity has affected climate systems and processes and elucidate how the enhanced greenhouse effect works • explain the extent to which changing land use patterns, allied to globalised systems of production and consumption, affect climate • summarize some of the effects of an anticipated rise in sea level • compare and contrast narratives of despair and resilience

  6. Textbook Reading Bergman and Renwick (2008) pp. 86-90 and for extension reading Intergovernmental Panel on Climate Change (2007) Assessment Report IV, Chapter 11 – Australia and New Zealand, Executive Summary [one web page] Kelly, P.M and Adger, W.N. (2000) Theory and practice in assessing vulnerability to climate change and facilitating adaptation Climatic Change 47: 325–352 Critical reading What is the author’s purpose? What key questions or problems does the author raise? What information, data and evidence does the author present? What key concepts does the author use to organize this information, this evidence? What key conclusions is the author coming to? Are those conclusions justified? What are the author’s primary assumptions? What viewpoints is the author writing from? What are the implications of the author’s reasoning? [from Foundation for Critical Thinking] Man reading a book

  7. Part 2 a narrative of despair

  8. Aid donations, New Orleans, August 2005

  9. Sign, New Orleans, August 2005

  10. Banda Aceh, 2004

  11. Part 3 Inside the greenhouse

  12. Source: UNEP

  13. Global temperature trends 2001-2005 Source: United Nations Environment Program (UNEP) See also Planet Ark

  14. Summer days over 35 °C CSIRO (2001) Climate Change - Projections for Australia

  15. Part 4 Crucial questions about Land use

  16. Land and land use Land = includes – (a) buildings and other structures permanently fixed to land; and (b) land covered with water; and (c) water covering land; and (d) any estate, interest, easement, servitude, privilege or right in or over land Use = in relation to land, includes the manner of utilising land but does not include the undertaking of development(Tasmanian Land Use Planning and Approvals Act, 1993)

  17. William Hogarth, Southwark Fair, 1833

  18. Development includes – (a) the construction, exterior alteration or exterior decoration of a building; and (b) the demolition or removal of a building or works; and (c) the construction or carrying out of works; and (d) the subdivision or consolidation of land, including buildings or airspace; and (e) the placing or relocation of a building or works on land; and (f) the construction or putting up for display of signs or hoardings (Tasmanian Land Use Planning and Approvals Act, 1993)

  19. “… shows the change in GHG on a sectoral basis over the period 1990 to 2003. In 2003, Australia's total greenhouse emissions were estimated at 550.1 megatonne (Mt) of carbon dioxide equivalent (CO2-e). This represented an increase of 25.6 Mt of CO2-e (4.9%) between 1990 and 2003. The major source of emissions was the energy sector which accounted for 68% of total national emissions in 2003. Energy industries (including power stations) were the largest contributor, accounting for 38% of total national emissions with transport contributing a further 14.5%. Over the period 1990-2003 emissions from the energy sector increased by 31%. This trend is likely to continue with emissions expected to grow by over 39% (119 Mt CO2-e) between 1990 and 2010. Emissions from the land use and forestry sector declined by 67% from 106.6 Mt CO2-e in 1993 to 34.9 Mt CO2-e in 2003. This decline reflects the greenhouse sink offset of mainly the forestry subsector.(AGO 2005a)”1301.0 - Year Book Australia, 2006. Greenhouse Gas Emissions.

  20. The urban climate

  21. See also the American Meteorological Society Glossary

  22. The effects of pollution on climate

  23. Intensive animal husbandry – land use linked to climate change

  24. 4613.0 - Australia's Environment: Issues and Trends, Jan 2010

  25. The Amazon

  26. Part 5 Rising tides

  27. Melting ice from the land will have significant effects on sea level. Melting ice already in the oceans will additionally exacerbate acidification, change the salinity of the ocean and both will affect ocean currents and the transfer of heat and energy between ocean and atmosphere Source UNEP

  28. Derwent Estuary Climate Change Issues: Regional actions, research and possible impacts

  29. Part 6 A narrative of resilience?

  30. See Tompkins and Adger (2004) on resilience

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