https://scholars.lib.ntu.edu.tw/handle/123456789/571827
標題: | The Dominant Contribution of Southern Ocean Heat Uptake to Time-Evolving Radiative Feedback in CESM | 作者: | Lin Y.-J Hwang Y.-T Lu J Liu F Rose B.E.J. YEN-TING HWANG |
關鍵字: | Carbon dioxide; Climate models; Heat flux; Oceanography; Surface waters; Atmospheric model; Cloud feedbacks; Dominant contributions; Enhanced surface; Ocean heat uptake; Sea surface temperature (SST); Surface heat fluxes; Time dependence; Feedback | 公開日期: | 2021 | 卷: | 48 | 期: | 9 | 來源出版物: | Geophysical Research Letters | 摘要: | In most fully coupled climate models, the net radiative feedback magnitude decreases with time after abruptly quadrupling CO2. Hypotheses have been raised to explain the time dependence of radiative feedbacks, including the influence from surface warming pattern and ocean heat uptake (OHU) pattern. By using the Green's Function derived from pairs of simulations in the atmospheric model (CAM5) coupled with a slab-ocean, with each simulation being forced by a localized surface heat flux anomaly, we evaluate the influences of regional OHU on transient surface warming pattern, accounting for the changes in radiative feedbacks. The attribution of the time-evolving net radiative feedback highlights the remote impact from OHU over the Southern Ocean on tropical sea surface temperature. The time-dependent weakening of OHU over the Southern Ocean gives rise to increasingly enhanced surface warming in southeastern Pacific, which leads to decreasing tropospheric stability and more positive cloud feedback decades after quadrupling CO2. ? 2021. American Geophysical Union. All Rights Reserved. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105754896&doi=10.1029%2f2021GL093302&partnerID=40&md5=f3084e852c49630a23c4826c0243851e https://scholars.lib.ntu.edu.tw/handle/123456789/571827 |
ISSN: | 948276 | DOI: | 10.1029/2021GL093302 | SDG/關鍵字: | Carbon dioxide; Climate models; Heat flux; Oceanography; Surface waters; Atmospheric model; Cloud feedbacks; Dominant contributions; Enhanced surface; Ocean heat uptake; Sea surface temperature (SST); Surface heat fluxes; Time dependence; Feedback |
顯示於: | 大氣科學系 |
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