- Code EMSC6027
- Unit Value 6 units
- Offered by Research School of Earth Sciences
- ANU College ANU Joint Colleges of Science
- Course subject Earth and Marine Science
- Areas of interest Earth and Marine Sciences
- Academic career PGRD
- Mode of delivery In Person
- Co-taught Course
There are considerable concerns about how rising atmospheric CO2 will affect Earth's climate and marine biogeochemistry in the future. Computer simulations are used to predict future climate changes, but these projections remain very uncertain and the capacity of climate models to reproduce long-term change needs to be thoroughly tested. The only way to do this is by testing model performance against geological archives of past climate changes.
You will examine how geoscientists reconstruct past climate changes combining data from the oceans, atmosphere, ice sheets, land surfaces, and vegetation, and how these relate to reconstructed changes in energy supply from the sun. One important topic that we will cover, for example, concerns the reasons for past atmospheric CO2 changes, and how these influenced the global climate, as well as conditions in the oceans.
The course covers the essential aspects needed for understanding the Earth's climate system such as Earth's energy balance; climate sensitivity; sea level and ice sheet changes; ocean circulation changes; nutrient cycling and atmospheric CO2 variations. These subjects are covered using marked events in Earth history. You will learn how the geochemistry of natural palaeoclimate archives and numerical models is used to reconstruct the history of the climate system and identify the causes of climate change. Geochemical tools and proxies, and geophysical methods, for reconstructing climate changes through Earth's history will be explained. You will learn how to use box models to understand nutrient cycling and atmospheric CO2 changes. We will look in more detail at: the nature of, and relationships between, high-resolution ice-core records from Greenland and Antarctica; abrupt climate changes; the factors that affect short-term climate variability in Australia and how these are currently changing; and the science related to common misconceptions in climate change discussions. A key outcome of this course will be a firm understanding of the physical, chemical, and biological processes that control Earth's climate, and how they may interact to modulate climate change in the future.
In addition to research-based lectures and practicals, journal articles of greater conceptual difficulty will be made available for students who wish to explore their personal interests in climate change. The teaching material is focused around areas of active palaeoclimate research and presents students with an overview of the latest international scientific understanding of past climate changes and their relevance to the future.
NOTE: Postgraduate students will attend classes with undergraduate students but will be assessed differently. This will be expected to lead to a greater capacity of integrated information interpretation across the different lines of evidence, and a deeper systemic comprehension that will support a more structural outlook with respect to the current climate crisis. Accordingly, there will be greater expected depth in the essay/report and more comprehensive questioning in the exam.
Upon successful completion, students will have the knowledge and skills to:
- Explain how the components of Earth’s climate system and carbon cycle have evolved through time.
- Describe positive and negative feedbacks in the Earth’s land-ocean-atmosphere system that control climate change on various timescales.
- Quantitatively analyse past climate change using elemental and isotopic tracers, and palaeoclimate archives.
- Develop a broad scientific basis for evaluating likely causes and potential impacts of future climate change.
This course is taught in "flipped" format. This means the lectures are in video format (offered via Wattle), and the associated lecture slots are used for tutorials and Q&A, to reinforce learning of the relevant videos that should be studied before the tutorials.
Each lecture has links to on-line, formative (not marked) progress quizzes in multiple-choice format, which are given to help you gauge your level of progress.
- - 2 exams - 1 pop-quiz at 15%, and a final exam at 50% (65) [LO 1,2,3,4]
- - 1 assignment (essay) set at the beginning with a deadline near course end (35) [LO 1,2,3,4]
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The expected workload will consist of approximately 130 hours throughout the semester including:
- Face-to face/on-line component of 3 x 1 hour lectures per week (36 hours per semester) plus 1 x 2 hours of face-to-face practicals per week (22 hours per semester) commencing in week 2.
- Approximately 72 hours of self directed study which will include preparation for lectures and other assessment tasks.
Not yet determined
Requisite and Incompatibility
W.F. Ruddiman, Earth’s Climate: Past and Future (2008), Freeman and Company, New York
Rohling, E.J., The oceans: a deep history. Princeton University Press, 272 pp., 2017.
Rohling, E.J., The climate question: natural cycles, human impact, future outlook. Oxford University Press, 162 pp., 2019.
Key journal articles identified in each lecture. These will be updated every year to reflect state-of the art developments.
Bachelor degree including Chemistry and Earth Science/Geology content.
Tuition fees are for the academic year indicated at the top of the page.
Commonwealth Support (CSP) Students
If you have been offered a Commonwealth supported place, your fees are set by the Australian Government for each course. At ANU 1 EFTSL is 48 units (normally 8 x 6-unit courses). More information about your student contribution amount for each course at Fees.
- Student Contribution Band:
- Unit value:
- 6 units
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