Past Climates

GEOG21442 Past Climates 20 Semester 2 Undergraduate Level 2 Anna Hughes Unit coordinator 1 FHEQ level (Framework for Higher Education Qualifications) ' Middle part of Bachelors ' European Credit Transfer & Accumulation System Rating : 10.0 Reconstructing past changes in climate and the environment allows us to place current climate change in a long-term context and understand (and potentially predict) how the Earth system responds to disruption. The Quaternary period experienced profound global change, including the advance and retreat of ice sheets, expansions and contractions of deserts and biomes, and major changes to ocean and atmospheric circulation systems. This course provides a general introduction to the physical science of the climate system and its impact on environments and landscapes of the last 2.6 million years. We will explore rates of change, to gain critical insights into the nature and sensitivity of the global climate system to external forcing and internal interactions between the atmosphere, lithosphere, cryosphere, hydrosphere and biosphere, and the environmental context for human evolution. The range of evidence and techniques used to gain insight into past climate change is examined, and their relative advantages and limitations discussed. Reconstructing past changes in climate and the environment allows us to place current climate change in a long-term context and understand (and potentially predict) how the Earth system responds to disruption. The Quaternary period experienced profound global change, including the advance and retreat of ice sheets, expansions and contractions of deserts and biomes, and major changes to ocean and atmospheric circulation systems. This course provides a general introduction to the physical science of the climate system and its impact on environments and landscapes of the last 2.6 million years. We will explore rates of change, to gain critical insights into the nature and sensitivity of the global climate system to external forcing and internal interactions between the atmosphere, lithosphere, cryosphere, hydrosphere and biosphere, and the environmental context for human evolution. The range of evidence and techniques used to gain insight into past climate change is examined, and their relative advantages and limitations discussed. The unit aims to:<ul> <li>Provide an introduction to the nature and impacts of past climate change across a range of timescales and landscapes during the Quaternary period (last 2.6 Million years).</li> <li>Outline climatic and environmental changes resulting from long-term orbital-forcing and short-term abrupt reorganisations of the Earth system.</li> <li>Examine key archives and proxies of climatic and environmental change.</li> <li>Explore connections between people and climatic and environmental change through time.</li></ul> • Describe and explain the nature and timescales of Quaternary climate change, from ice age cycles to rapid perturbations.• Understand the environmental response and development of a different latitudes/regions to climatic changes during the Quaternary.• Evaluate some of the key archives and methods used to trace past climate and environmental change . • Critically evaluate literature and datasets.• Explain how and why reconstructions of past climate and environmental response may disagree. • Plot published data from Quaternary climate records against time using spreadsheet software (e.g. Excel). • Source relevant literature.• Access published datasets.• Discuss theoretical ideas and interpretations, and the evidence used to support them.• Critically analyse debates found within published literature. Lectures involve introduction of theoretical content . Seminars typically involve a set of preparatory readings and/or guided tasks designed to consolidate understanding of lecture material and support critical engagement with published literature and case studies. Seminars will typically involve discussion in small groups, with the course lecturers, and feeding back into the wider classroom. 0 Other 100% Assessment task                  Length               How and when feedback is provided         Weighting         Computer practical               2 hours                  Verbal feedback in class                                Formative worksheet with short-answer  style questions.  To source and plot published  data, explore this and  improve understanding of  key course concepts and themes.Assessment task                  Length                       How and when feedback is provided   WeightingCoursework Essay                 1,800 words                  Written feedback within                            50%                                                                                     15 working daysExam (3-day open book         Part A short answers     Written feedback                                      50% exam)                                      (1000 words)                following exam period                                                                                 Part B long-form                                                answer (one from                                                choice of 4 questions,                                                 1,200 words)                                               2,200 words in total BA(Hons) Geography BA(Hons) Geography Second Year Optional BSc(Hons) Geography BSc(Hons) Geography Second Year Optional BA (Hons) Geog w Int Study BA (Hons) Geog w Int Study Second Year Optional BSc (Hons) Geog w Int Study BSc (Hons) Geog w Int Study Second Year Optional BA Geography w Placement BA Geography with Placement Second Year Optional BSc Geography w Placement BSc Geography w Placement Second Year Optional Y Elias, S.A. and Mock, C. (Eds), 2013. Encyclopaedia of Quaternary Science. 2nd Edition, Elsevier. pp 3888 NOTE this is an online resource.Lowe, J.J. and Walker, M.J.C. (2015) Reconstructing Quaternary Environments. 3rd edition. Abingdon, Oxon, Routledge. pp538Ruddiman, W.F. (2014) Earth’s Climate: past and future. 3rd edition. New York, W.H. Freeman and Company. pp445. NOTE the First and Second Editions are also excellent.Key journals include: Geology, Science, Nature, Journal of Quaternary Science, Quaternary Research, Quaternary Science Reviews, Global and Planetary Change Lectures 20 Seminars 10 0 170