CLIMATE CHANGE



  • Date:
    September 10, 2020
    Source:
    University of California - Santa Cruz

    "Scientists have compiled a continuous, high-fidelity record of variations in Earth's climate extending 66 million years into the past. The record reveals four distinctive climate states, which the researchers dubbed Hothouse, Warmhouse, Coolhouse, and Icehouse. These major climate states persisted for millions and sometimes tens of millions of years, and within each one the climate shows rhythmic variations corresponding to changes in Earth's orbit around the sun.
    Critical to compiling the new climate record was getting high-quality sediment cores from deep ocean basins through the international Ocean Drilling Program. A critical step was splicing together overlapping segments of the climate record obtained from sediment cores from different parts of the world. Now that they have compiled a continuous, astronomically dated climate record of the past 66 million years, the researchers can see that the climate's response to orbital variations depends on factors such as greenhouse gas levels and the extent of polar ice sheets.The new climate record provides a valuable framework for many areas of research, he added. It is not only useful for testing climate models, but also for geophysicists studying different aspects of Earth dynamics and paleontologists studying how changing environments drive the evolution of species."

    Here is one of my favorite sites to use in the classroom when working with the topic of CLIMATE CHANGE: https://climate.nasa.gov/
    Great 13 minute video https://www.globalchange.gov/browse/educators/wildlife-wildlands-toolkit/video from GlobalChange.gov


  • @Jeanine-Gelhaus Thanks for sharing this resource!

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