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Quantifying Local Radiative Feedbacks at the Sea Surface.

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Title: Quantifying Local Radiative Feedbacks at the Sea Surface.
Authors: Liu, Yincheng1 (AUTHOR), Ma, Jian2 (AUTHOR), Huang, Xin1 (AUTHOR), Lu, Jian3 (AUTHOR), Zhou, Chen1 (AUTHOR) czhou17@nju.edu.cn
Source: Journal of Climate. Nov2025, Vol. 38 Issue 22, p6781-6796. 16p.
Subjects: Climate change, Climate feedbacks, Ocean temperature, Tropical climate, El Niño, Least squares, Heat budget (Geophysics)
Abstract: The spatial pattern of sea surface temperature (SST) change, which is important in determining Earth's energy budget under climate change, disagrees in observations and simulations. The spatial inhomogeneity of local feedback has been identified as an important contributor to the evolution of the SST pattern; however, traditional regression methods are inaccurate in quantifying local feedbacks in the tropics. In this paper, we quantify the magnitude of local feedbacks at the sea surface using SST patch perturbation experiments, with a comparison of the results with those calculated using simple linear regression. The spatial patterns of local feedbacks calculated from these two methods are generally consistent, while the regression method is inaccurate for tropical latent heat and sensible heat feedbacks. The results show that local feedback at the sea surface is consistently negative, which prevents the SST from experiencing unlimited warming. Tropical ascent regions show the strongest negative local feedback in both zonal and meridional directions, and local latent heat feedback and cloud radiative feedback are the most important contributors to the spatial inhomogeneity of surface feedback. Local radiative feedbacks calculated using linear regression are consistent in simulations and observations, and the spatial pattern of local feedbacks is also consistent with the future SST change pattern predicted by climate models, indicating that the El Niño–like future SST change pattern projected by climate models is likely plausible. However, climate models appear to overestimate the negative local radiative feedback compared to reanalysis and observation-based satellite data, which might potentially contribute to the differences between observed and model-simulated SST change patterns during the last several decades. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Climate is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Quantifying Local Radiative Feedbacks at the Sea Surface.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Climate%22">Journal of Climate</searchLink>. Nov2025, Vol. 38 Issue 22, p6781-6796. 16p.
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  Data: The spatial pattern of sea surface temperature (SST) change, which is important in determining Earth's energy budget under climate change, disagrees in observations and simulations. The spatial inhomogeneity of local feedback has been identified as an important contributor to the evolution of the SST pattern; however, traditional regression methods are inaccurate in quantifying local feedbacks in the tropics. In this paper, we quantify the magnitude of local feedbacks at the sea surface using SST patch perturbation experiments, with a comparison of the results with those calculated using simple linear regression. The spatial patterns of local feedbacks calculated from these two methods are generally consistent, while the regression method is inaccurate for tropical latent heat and sensible heat feedbacks. The results show that local feedback at the sea surface is consistently negative, which prevents the SST from experiencing unlimited warming. Tropical ascent regions show the strongest negative local feedback in both zonal and meridional directions, and local latent heat feedback and cloud radiative feedback are the most important contributors to the spatial inhomogeneity of surface feedback. Local radiative feedbacks calculated using linear regression are consistent in simulations and observations, and the spatial pattern of local feedbacks is also consistent with the future SST change pattern predicted by climate models, indicating that the El Niño–like future SST change pattern projected by climate models is likely plausible. However, climate models appear to overestimate the negative local radiative feedback compared to reanalysis and observation-based satellite data, which might potentially contribute to the differences between observed and model-simulated SST change patterns during the last several decades. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Climate is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1175/JCLI-D-24-0466.1
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      – Code: eng
        Text: English
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        PageCount: 16
        StartPage: 6781
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      – SubjectFull: Climate change
        Type: general
      – SubjectFull: Climate feedbacks
        Type: general
      – SubjectFull: Ocean temperature
        Type: general
      – SubjectFull: Tropical climate
        Type: general
      – SubjectFull: El Niño
        Type: general
      – SubjectFull: Least squares
        Type: general
      – SubjectFull: Heat budget (Geophysics)
        Type: general
    Titles:
      – TitleFull: Quantifying Local Radiative Feedbacks at the Sea Surface.
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            NameFull: Liu, Yincheng
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            NameFull: Ma, Jian
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            NameFull: Huang, Xin
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            NameFull: Lu, Jian
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            NameFull: Zhou, Chen
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              Text: Nov2025
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