Greener Climate Prediction Shows Plants Slow Warming

Discussion in 'Environment' started by rdean, Dec 10, 2010.

  1. rdean

    rdean rddean

    Aug 9, 2009
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    Greener Climate Prediction Shows Plants Slow Warming

    Bounoua stressed that, while the model's results showed a negative feedback, it is not a strong enough response to alter the global warming trend that is expected. In fact, the present work is an example of how, over time, scientists will create more sophisticated models that will chip away at the uncertainty range of climate change and allow more accurate projections of future climate.

    "This feedback slows but does not alleviate the projected warming," Bounoua said.

    An example of a positive feedback would be if warming temperatures caused forests to grow in the place of Arctic tundra. The darker surface of a forest canopy would absorb more solar radiation than the snowy tundra, which reflects more solar radiation. The greater absorption would amplify warming. The vegetative feedback modeled in this research, in which increased plant growth would exert a cooling effect, is an example of a negative feedback. The feedback quantified in this study is a result of an interaction between all these aspects: carbon dioxide enrichment, a warming and moistening climate, plants' more efficient use of water, down-regulation and the ability for leaf growth.

    This new paper is one of many steps toward gradually improving overall future climate projections, a process that involves better modeling of both warming and cooling feedbacks.


    What this shows is that it's more complicated than, "It's snowing, so that means climate change doesn't exist". 6%

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