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Plant Physiology Increases the Magni...

Zarakas, Claire Marie.

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Plant Physiology Increases the Magnitude and Spread of the Transient Climate Response to CO2 in CMIP6 Earth System Models.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Plant Physiology Increases the Magnitude and Spread of the Transient Climate Response to CO2 in CMIP6 Earth System Models./
Author:	Zarakas, Claire Marie.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	68 p.
Notes:	Source: Masters Abstracts International, Volume: 82-02.
Contained By:	Masters Abstracts International82-02.
Subject:	Climate change. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28001356
ISBN:	9798664708530

Plant Physiology Increases the Magnitude and Spread of the Transient Climate Response to CO2 in CMIP6 Earth System Models.
Zarakas, Claire Marie.

Plant Physiology Increases the Magnitude and Spread of the Transient Climate Response to CO2 in CMIP6 Earth System Models. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 68 p.

Source: Masters Abstracts International, Volume: 82-02.

Thesis (Master's)--University of Washington, 2020.

This item must not be sold to any third party vendors.

Increasing concentrations of CO2 in the atmosphere not only influence climate through CO2's effect as a greenhouse gas but also through its impact on plants. Plants respond to atmospheric CO2 concentrations in several ways that can alter surface energy and water fluxes and thus surface climate, including changes in stomatal conductance, water use, and canopy leaf area. These plant physiological responses are already embedded in most Earth System models, and a robust literature demonstrates that they can affect global-scale temperature. However, the physiological contribution to transient warming has yet to be assessed systematically in Earth System models. Here this gap is addressed using carbon cycle simulations from the 5th and 6th phases of the Coupled Model Intercomparison Project (CMIP) to isolate the radiative and physiological contributions to the transient climate response (TCR). In CMIP6 models, the physiological effect contributes 0.12°C (σ: 0.09°C; range: 0.02 - 0.29°C) of warming to the TCR, corresponding to 6.1% of the full TCR (σ: 3.8%; range: 1.4 - 13.9%). Moreover, variation in the physiological contribution to the TCR across models contributes disproportionately more to the inter-model spread of TCR estimates than it does to the mean. The largest contribution of plant physiology to CO2-forced warming - and the inter-model spread in warming - occurs over land, especially in forested regions.

ISBN: 9798664708530Subjects--Topical Terms:

2079509
Climate change.
Subjects--Index Terms:

Biosphere-atmosphere interactions

Plant Physiology Increases the Magnitude and Spread of the Transient Climate Response to CO2 in CMIP6 Earth System Models.
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520 $a Increasing concentrations of CO2 in the atmosphere not only influence climate through CO2's effect as a greenhouse gas but also through its impact on plants. Plants respond to atmospheric CO2 concentrations in several ways that can alter surface energy and water fluxes and thus surface climate, including changes in stomatal conductance, water use, and canopy leaf area. These plant physiological responses are already embedded in most Earth System models, and a robust literature demonstrates that they can affect global-scale temperature. However, the physiological contribution to transient warming has yet to be assessed systematically in Earth System models. Here this gap is addressed using carbon cycle simulations from the 5th and 6th phases of the Coupled Model Intercomparison Project (CMIP) to isolate the radiative and physiological contributions to the transient climate response (TCR). In CMIP6 models, the physiological effect contributes 0.12°C (σ: 0.09°C; range: 0.02 - 0.29°C) of warming to the TCR, corresponding to 6.1% of the full TCR (σ: 3.8%; range: 1.4 - 13.9%). Moreover, variation in the physiological contribution to the TCR across models contributes disproportionately more to the inter-model spread of TCR estimates than it does to the mean. The largest contribution of plant physiology to CO2-forced warming - and the inter-model spread in warming - occurs over land, especially in forested regions.
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