Students will be introduced to a few of the different methods used in paleoclimatology, including isotopic ratios as paleotemperature proxies. They will investigate the greenhouse gas connections of two ancient climate episodes, the cold "Snowball Earth" of the Neoproterozoic and the hot "Paleocene-Eocene Thermal Maximum" (PETM) of the Cenozoic.
The unit emphasizes the grand challenges of energy resources and climate change by grounding these issues in an understanding of ancient climate from a systems thinking perspective. Students will gain a more robust appreciation for the record of the movement of carbon between atmosphere, geosphere, hydrosphere, and biosphere over geologic time, and how various components of the Earth system respond to those perturbations. The unit practices geoscientific habits of mind, such as comparing modern processes to ancient analogues recorded by geologic processes, as well as the importance of converging lines of evidence, and recognition of Earth as a long-lived, dynamic, and complex system.

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What is the contribution of melting ice sheets compared to other sources of sea-level rise? How much is the sea level projected to increase during the twenty-first century? In this unit students will use Gravity Recovery and Climate Experiment (GRACE) ice-mass loss time series from Greenland and Antarctica to calculate sea-level rise due to the addition of freshwater inputs from melting ice sheets, and use Interferometric Synthetic Aperture Radar (InSAR) ice-velocity data to extrapolate which regions of the ice sheets are losing the greatest mass. Sea-level rise from melting ice sheets is then contrasted to the other dominant causes of sea-level rise, including thermal expansion, melting glaciers, and changes in land water storage. Lastly, students will extrapolate how much sea-level rise will occur by year 2100 based on recent observed rates of sea-level rise and compare these values to sea-level rise projections from the Intergovernmental Panel on Climate Change.

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Online-ready: The exercise is electronic and could be done individually or in small online groups. Lecture is best done synchronously due to the technical nature. Discussion would be better that way too.

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Students will be able to identify the functional roles that organisms play in ocean ecosystems. How do human-induced changes in ocean conditions affect biodiversity, and thereby the health and resilience of a coral reef? Students explore and discuss the direct and indirect impacts that ocean acidification can have on species, food web dynamics, ecosystem function, and commercial resources. At the end of this unit the students should be able to articulate how changes in ocean chemistry can create negative outcomes for humans who depend on living ocean resources.

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The purpose of this unit is to explore, compare, contrast, and calculate energy fluxes from different CZO field sites to better appreciate the critical differences in the driving radiative forces affecting each site. This module will help students complete their semester-long project by introducing them to critical baseline data collection and databases related to energy budgets.
The primary data set for this activity is the CZO tower network of a dozen met/flux towers spanning six different biomes/sites. Each site has a slightly different data format but it is easily manipulated in a spreadsheet. The lesson is divided into the following engaging activities:

Background lecture: Introduction to water and energy fluxes and balances
Database access and graphing activity: Students will learn what data exists in the CZO database and how to load and manipulate it using Excel.
Discovery activity: Students in small groups will compare monthly bar graphs of energy fluxes drawn from six Ameriflux sites and address questions concerning linkages with other variables and processes affecting energy partitioning.
Reference ET Activity: Students will learn about the Penman-Monteith formulation of evaporation and calculate this from common meteorological data and compare with field measurements of evapotranspiration. The class will discuss these results as time allows.

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In this two-day activity spanning Units 4 and 5, students analyze spatial variation in climate through a map-based jigsaw exploration of NASA's Earth's Radiation Budget Experiment (ERBE) data. By the end of the activity, students will have created maps and graphs illustrating the global radiation balance and used their knowledge to develop and refine hypotheses regarding impacts of global climate change.

Unit 4 (day 1 of activity) begins with a brief student exploration of the global impacts of climate change and how maps can be used to effectively communicate these patterns. Students are then broken into small groups to analyze a map of one of three ERBE datasets. Students are asked to interpret geographic patterns in these data, infer the underlying causes of patterns they observe using knowledge they have accumulated in the previous units, and create an annotated map that clearly illustrates their observations and inferences. During the following class period (Unit 5), they will share their findings with a new group of classmates and work to synthesize the data to estimate the radiation balance.

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This unit shows how GPS records of bedrock surface elevation may be used to monitor snow and ice loading/unloading on decadal and annual time scales. Students calculate secular trends in the GPS time series and then use the original and detrended records to identify sites that exhibit similar behavior. Students gain experience with the challenges and benefits of using bedrock geodetic data to study snow and ice mass changes. They also consider the magnitude and timing of the elastic component of vertical change compared to that associated with post-glacial rebound (viscoelastic response).

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Note: Although the term GPS (Global Positioning System) is more commonly used in everyday language, it officially refers only to the USA's constellation of satellites. GNSS (Global Navigation Satellite System) is a universal term that refers to all satellite navigation systems including those from the USA (GPS), Russia (GLONASS), European Union (Galileo), China (BeiDou), and others. In this module, we use the term GPS even though, technically, some of the data may be coming from satellites in other systems.

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Online-ready: The exercise is electronic and could be done individually or in small online groups. Lecture is best done synchronously due to the technical nature. Discussion would be better that way too.

(Note: this resource was added to OER Commons as part of a batch upload of over 2,200 records. If you notice an issue with the quality of the metadata, please let us know by using the 'report' button and we will flag it for consideration.)

Students will read and summarize an article that details scientific studies on behavioral changes of gray whales. Discussed are their feeding behavior, migratory behavior, and breeding patterns in the Pacific. Students will examine the whales' responses and discuss in small groups how the responses relate to climate change. By interpreting potential links between gray whale behavior and changed ocean conditions, students will be able to infer the ecological role that gray whales play within a community and an ecosystem. Students will summarize the main concepts, scientific evidence, data and observations cited, and justify why gray whales can be considered "ecosystem sentinels."

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Building on the work they did in Unit 3, students will perform an "ecocritical" rhetorical reading (the theoretical lens for examining the way that literary texts engage with climate and climate issues) in order to analyze a short story chosen from several provided by the instructor. They will utilize literary terminology in discussing this text and generating a rhetorical analysis of it.

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In this two-day activity spanning Units 4 and 5, students analyze spatial variation in climate through a map-based jigsaw exploration of NASA's Earth's Radiation Budget Experiment (ERBE) data. By the end of the activity students will have created maps and graphs illustrating the global radiation balance and used their knowledge to develop and refine hypotheses regarding impacts of global climate change.

In Unit 5 (day 2 of activity) students work in new groups that include members who analyzed each of the three ERBE datasets from day 1 of the activity (Unit 4). These synthesis groups work together to summarize their observations and infer regions of radiation excess and deficit in graph and map forms. These new figures are used to facilitate a whole-class discussion of the global radiation balance. The unit ends with a discussion of how atmospheric circulation acts to balance the radiation budget and the impacts of a changing climate on other Earth systems.

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Students will examine data that record the modern increase in carbon dioxide concentrations and the associated increase in average temperatures, and they will investigate the effects of carbon dioxide on various components of the Earth system (atmosphere, cryosphere, hydrosphere -- oceans). Students also learn how the burning of fossil fuels contributes to increases in atmospheric carbon dioxide.

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Sea-level rise due to the melting of glaciers and ice sheets and ocean thermal expansion has significant societal and economic consequences. In this final unit, students prepare a summary of the impacts of sea level for relevant stakeholders. Students will integrate the stakeholder analysis in Unit 1 with the geodetic data (radar satellite altimetry, GRACE [Gravity Recovery and Climate Experiment], InSAR, and GPS) of ice mass loss and sea-level rise from Units 2 -- 4 in their analysis. Unit 5 is the summative assessment for the module.

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Online-ready: The exercise is a final project that can be done remotely, individually or in small online groups.

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In the final unit of the module, students will synthesize their understanding of climate science and modes of communication. Students are assigned to groups and given a climate change issue that they will use to demonstrate their understanding of ethos, pathos, and logos, when presented with a variety of audiences. The module summative assessment is designed to be administered after this unit.

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This unit is the module's capstone project: developing a conceptual model of the climatic and societal effects of a catastrophic volcanic eruption occurring in modern times. Through independent research and in-class collaboration, students explore the climatic and societal effects of past volcanic eruption events. Students are then introduced to the large Toba eruption event, review concept maps, concept sketches, and system diagrams, and are are given examples and guidelines for conceptual model design. Students complete their written summary outside of class.

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In this unit, students will review mock proposals that deal with some aspect of the role of carbon in the environment. Each proposal is based on actual actions proposed to mitigate some aspect of carbon consumption and/or climate change, and as such are considered "real world" scenarios (although somewhat generalized for this exercise). Students will review each proposal for the possible societal, economic, and moral implications if the proposal was pursued on a large scale -- for instance, by a single nation or collection of countries. Additionally, students will make recommendations to a fictitious governmental panel on the merits and pitfalls of each proposal and provide well-supported recommendations about whether that government panel should pursue or reject the proposal. Instructors can use this unit as a stand-alone activity, or as a summary activity to comprehensively review, discuss, and assess material presented in this module's earlier units.

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Students are introduced to the concept of geoengineering, "the deliberate large-scale intervention in the Earth's climate system, in order to moderate global warming" (The Royal Society). The goal is for them to leverage their acquired knowledge from previous units in physical oceanography, ocean chemistry, biodiversity, and ecosystem ecology to evaluate the validity and/or the risk of geoengineering (systems thinking). Current and future generations will be required to make informed decisions on whether they support strategies that result in irreversible changes in Earth's carbon cycle.

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Unit plans at two levels, K-grade 2 and grades 3-5 develop understanding of the issue theme, We Depend on Earth's Climate, by focusing on adaptations and environments of local plant species and polar mammals. The units are modeled after a learning cycle framework built around five key steps: Engage, Explore, Explain, Expand, and Assess. The lessons are aligned with national standards for science education and English language arts.

Unit plans for Grades K-2 and 3-5 are a regular feature of the magazine Beyond Weather and the Water Cycle. The plans draw on articles and resources in a themed issue and are aligned with national science and language arts standards. This unit is designed to provide elementary students with the opportunity to investigate how the annual rings in trees help scientists learn about past climates. It uses hands-on experiences and nonfiction text to answer the unit question: How do trees help scientists learn about the past?

In this video segment adapted from the International Institute for Sustainable Development, Inuit observers describe how their traditional understanding of weather patterns is being challenged by unpredictable weather behaviors.

In this activity, students examine a pair of satellite images of the ocean and determine whether there is a relationship between the height of ocean waves and the sea level. Data from the two images are plotted side by side and students discuss the reasons for their findings. The resource includes the images and a student worksheet. Summary background information, data and images supporting the activity are available on the Earth Update data site. To complete the activity, students will need to access the Space Update multimedia collection, which is available for download and purchase for use in the classroom.

After completing this activity students should be able to:

- demonstrate sediment core collection through a field exercise (whether or not you use that core's data).
- recognize potential errors and contamination risks and identify ways to minimize them.
- distinguish different layers within the cores and use appropriate terminology to describe them.
- identify cyclical variations in the core layers, and correlate those with remotely sensed lake temperature data over a regional spatial scale.
- estimate lake evaporation rates from lake temperatures.
- reconstruct regional lake evaporation based on core layers.
- evaluate the effectiveness of point observations to represent regional paleoclimate

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