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Title: Greater committed warming after accounting for the pattern effect

Journal Article · · Nature Climate Change

Our planet’s energy balance is sensitive to spatial inhomogeneities in sea surface temperature and sea ice changes, but this is typically ignored in climate projections. Here, we show the energy budget during recent decades can be closed by combining changes in effective radiative forcing, linear radiative damping and this pattern effect. The pattern effect is of comparable magnitude but opposite sign to Earth’s net energy imbalance in the 2000s, indicating its importance when predicting the future climate on the basis of observations. Additionally, after the pattern effect is accounted for, the best-estimate value of committed global warming at present-day forcing rises from 1.31 K (0.99–2.33 K, 5th–95th percentile) to over 2 K, and committed warming in 2100 with constant long-lived forcing increases from 1.32 K (0.94–2.03 K) to over 1.5 K, although the magnitude is sensitive to sea surface temperature dataset. Further constraints on the pattern effect are needed to reduce climate projection uncertainty.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
Ministry of Science and Technology of China; National Natural Science Foundation of China (NNSFC); National Science Foundation (NSF); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1755848
Report Number(s):
LLNL-JRNL--808123; 1014002
Journal Information:
Nature Climate Change, Journal Name: Nature Climate Change Journal Issue: na Vol. na; ISSN 1758-678X
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (35)

Variation in climate sensitivity and feedback parameters during the historical period: VARIATION IN CLIMATE SENSITIVITY journal April 2016
Radiative forcing of carbon dioxide, methane, and nitrous oxide: A significant revision of the methane radiative forcing: Greenhouse Gas Radiative Forcing journal December 2016
The Diversity of Cloud Responses to Twentieth Century Sea Surface Temperatures journal January 2018
Analyzing the dependence of global cloud feedback on the spatial pattern of sea surface temperature change with a G reen's function approach journal September 2017
Uncertainty in the 2°C warming threshold related to climate sensitivity and climate feedback journal December 2015
Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth century journal January 2003
Revisiting the Earth's sea-level and energy budgets from 1961 to 2008: SEA-LEVEL AND ENERGY BUDGETS journal September 2011
World ocean heat content and thermosteric sea level change (0-2000 m), 1955-2010: WORLD OCEAN HEAT CONTENT journal May 2012
Accounting for Changing Temperature Patterns Increases Historical Estimates of Climate Sensitivity journal August 2018
Observational Evidence for Two Modes of Coupling Between Sea Surface Temperatures, Tropospheric Temperature Profile, and Shortwave Cloud Radiative Effect in the Tropics journal August 2019
Broad Consistency Between Observed and Simulated Trends in Sea Surface Temperature Patterns journal May 2020
Energy budget constraints on climate sensitivity in light of inconstant climate feedbacks journal April 2017
Committed warming inferred from observations journal July 2017
Observed changes in top-of-the-atmosphere radiation and upper-ocean heating consistent within uncertainty journal January 2012
Energy budget constraints on climate response journal May 2013
Distinct energy budgets for anthropogenic and natural changes during global warming hiatus journal November 2015
Impact of decadal cloud variations on the Earth’s energy budget journal October 2016
Current fossil fuel infrastructure does not yet commit us to 1.5 °C warming journal January 2019
Energy budget constraints on historical radiative forcing journal February 2020
Emergent constraints on Earth’s transient and equilibrium response to doubled CO2 from post-1970s global warming journal October 2019
Relationship of tropospheric stability to climate sensitivity and Earth’s observed radiation budget journal November 2017
Evidence for Large Decadal Variability in the Tropical Mean Radiative Energy Budget journal February 2002
A roadmap for rapid decarbonization journal March 2017
Inference of Climate Sensitivity from Analysis of Earth's Energy Budget journal June 2016
A New Sea Surface Temperature and Sea Ice Boundary Dataset for the Community Atmosphere Model journal October 2008
The Dependence of Radiative Forcing and Feedback on Evolving Patterns of Surface Temperature Change in Climate Models journal February 2015
Insights into Earth’s Energy Imbalance from Multiple Sources journal October 2016
Clouds and the Earth’s Radiant Energy System (CERES) Energy Balanced and Filled (EBAF) Top-of-Atmosphere (TOA) Edition-4.0 Data Product journal January 2018
Attributing Historical and Future Evolution of Radiative Feedbacks to Regional Warming Patterns using a Green’s Function Approach: The Preeminence of the Western Pacific journal September 2019
Potential Problems Measuring Climate Sensitivity from the Historical Record journal March 2020
Negligible Unforced Historical Pattern Effect on Climate Feedback Strength Found in HadISST-Based AMIP Simulations journal January 2021
Decadal climate variability and the global energy balance journal July 2017
Emulating coupled atmosphere-ocean and carbon cycle models with a simpler model, MAGICC6 – Part 1: Model description and calibration journal January 2011
The influence of internal variability on Earth's energy balance framework and implications for estimating climate sensitivity journal January 2018
Overview of the Coupled Model Intercomparison Project Phase 6 (CMIP6) experimental design and organization journal January 2016

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