EEB428H1 Chapter N/A: 05 - Changes in Ecologically Critical Terrestrial Climate Conditions Summary

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Changes in ecologically critical terrestrial climate conditions summary. Temperatures have increased twice as rapidly over land as over the ocean. First indication of something wrong was fossil distribution of plants/animals and the shifts. Projected climate change over the 21 st century. The trajectory of climate over the 21st century depends on three factors: The energy imbalance already built into the system as a result of past forcing by greenhouse gases and other changes. The intrinsic sensitivity of the climate system to anthropogenic forcing, including atmospheric, carbon-cycle, and other feedbacks. The magnitude of future forcing, such as by ghgs and aerosols not yet released. One model predicts more than 4 c of warming over the northern hemisphere high latitudes. Precipitation predicted to increase over high latitudes and decrease over the. Mediterranean region and areas of south america, africa, and australia. Increases in extreme hot seasons to come, as well as dry seasons.

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