skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Muted extratropical low cloud seasonal cycle is closely linked to underestimated climate sensitivity in models

Journal Article · · Nature Communications

Abstract A large spread in model estimates of the equilibrium climate sensitivity (ECS), defined as the global mean near-surface air-temperature increase following a doubling of atmospheric CO 2 concentration, leaves us greatly disadvantaged in guiding policy-making for climate change adaptation and mitigation. In this study, we show that the projected ECS in the latest generation of climate models is highly related to seasonal variations of extratropical low-cloud fraction (LCF) in historical simulations. Marked reduction of extratropical LCF from winter to summer is found in models with ECS > 4.75 K, in accordance with the significant reduction of extratropical LCF under a warming climate in these models. In contrast, a pronounced seasonal cycle of extratropical LCF, as supported by satellite observations, is largely absent in models with ECS < 3.3 K. The distinct seasonality in extratropical LCF in climate models is ascribed to their different prevailing cloud regimes governing the extratropical LCF variability.

Sponsoring Organization:
USDOE
OSTI ID:
1999447
Journal Information:
Nature Communications, Journal Name: Nature Communications Vol. 14 Journal Issue: 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (59)

CO 2 Increase Experiments Using the CESM: Relationship to Climate Sensitivity and Comparison of CESM1 to CESM2 journal November 2020
Past warming trend constrains future warming in CMIP6 models journal March 2020
Observational constraint on cloud feedbacks suggests moderate climate sensitivity journal February 2021
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
A quantitative performance assessment of cloud regimes in climate models journal August 2008
Overview of the Coupled Model Intercomparison Project Phase 6 (CMIP6) experimental design and organization journal January 2016
High Climate Sensitivity in the Community Earth System Model Version 2 (CESM2) journal July 2019
The ERA5 global reanalysis journal June 2020
Equilibrium Climate Sensitivity Estimated by Equilibrating Climate Models journal February 2020
Extratropical Shortwave Cloud Feedbacks in the Context of the Global Circulation and Hydrological Cycle journal April 2022
Reducing Uncertainties in Climate Projections with Emergent Constraints: Concepts, Examples and Prospects journal December 2019
The influence of extratropical cloud phase and amount feedbacks on climate sensitivity journal July 2017
The three-dimensional distribution of clouds around Southern Hemisphere extratropical cyclones: THE 3-D DISTRIBUTION OF CLOUDS IN CYCLONES journal November 2011
Taking climate model evaluation to the next level journal January 2019
An Overview of CMIP5 and the Experiment Design journal April 2012
Storm track processes and the opposing influences of climate change journal August 2016
Origins of the Solar Radiation Biases over the Southern Ocean in CFMIP2 Models journal January 2014
The Surface Downwelling Solar Radiation Surplus over the Southern Ocean in the Met Office Model: The Role of Midlatitude Cyclone Clouds journal November 2012
Major Characteristics of Southern Ocean Cloud Regimes and Their Effects on the Energy Budget journal October 2011
Observational constraints on mixed-phase clouds imply higher climate sensitivity journal April 2016
THE CLOUDSAT MISSION AND THE A-TRAIN: A New Dimension of Space-Based Observations of Clouds and Precipitation journal December 2002
Concurrent Changes to Hadley Circulation and the Meridional Distribution of Tropical Cyclones journal May 2018
A global survey of the instantaneous linkages between cloud vertical structure and large-scale climate journal April 2014
Low clouds link equilibrium climate sensitivity to hydrological sensitivity journal September 2018
Evaluating Climate Models’ Cloud Feedbacks Against Expert Judgment journal January 2022
Emergent Constraints for Cloud Feedbacks journal October 2015
Emergent Constraints on Regional Cloud Feedbacks journal May 2021
Overview of the CALIPSO Mission and CALIOP Data Processing Algorithms journal November 2009
Emergent constraints on equilibrium climate sensitivity in CMIP5: do they hold for CMIP6? journal January 2020
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
Instantaneous Linkages between Clouds and Large-Scale Meteorology over the Southern Ocean in Observations and a Climate Model journal December 2017
Using model analysis and satellite data to assess cloud and precipitation in midlatitude cyclones
  • Field, P. R.; Bodas-Salcedo, A.; Brooks, M. E.
  • Quarterly Journal of the Royal Meteorological Society, Vol. 137, Issue 659 https://doi.org/10.1002/qj.858
journal June 2011
Causes of Higher Climate Sensitivity in CMIP6 Models journal January 2020
Mixed‐phase cloud physics and Southern Ocean cloud feedback in climate models journal September 2015
Extratropical Cyclone Clouds in the GFDL Climate Model: Diagnosing Biases and the Associated Causes journal September 2019
Computing and Partitioning Cloud Feedbacks Using Cloud Property Histograms. Part I: Cloud Radiative Kernels journal June 2012
Connections Between Clouds, Radiation, and Midlatitude Dynamics: a Review journal April 2015
Understanding the Varied Influence of Midlatitude Jet Position on Clouds and Cloud Radiative Effects in Observations and Global Climate Models journal December 2016
An Improved In Situ and Satellite SST Analysis for Climate journal July 2002
Cloud Vertical Distribution across Warm and Cold Fronts in CloudSat –CALIPSO Data and a General Circulation Model journal June 2010
Hadley cell expansion in CMIP6 models journal January 2020
Observational constraints on low cloud feedback reduce uncertainty of climate sensitivity journal May 2021
On the Effect of Historical SST Patterns on Radiative Feedback journal September 2022
An Assessment of Earth's Climate Sensitivity Using Multiple Lines of Evidence journal September 2020
The CloudSat radar-lidar geometrical profile product (RL-GeoProf): Updates, improvements, and selected results: CLOUDSAT RADAR-LIDAR GEOMETRICAL PROFILE journal August 2014
The Change in Low Cloud Cover in a Warmed Climate Inferred from AIRS, MODIS, and ERA-Interim journal May 2017
Response of the Midlatitude Jets, and of Their Variability, to Increased Greenhouse Gases in the CMIP5 Models journal September 2013
Expansion of the Hadley cell under global warming journal January 2007
Tropical Widening: From Global Variations to Regional Impacts journal June 2020
On the spread of changes in marine low cloud cover in climate model simulations of the 21st century journal September 2013
Strong Dependence of Atmospheric Feedbacks on Mixed‐Phase Microphysics and Aerosol‐Cloud Interactions in HadGEM3 journal June 2019
Long-term cloud change imprinted in seasonal cloud variation: More evidence of high climate sensitivity: Cloud Feedback and Seasonal Variation journal October 2015
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
Context for interpreting equilibrium climate sensitivity and transient climate response from the CMIP6 Earth system models journal June 2020
Low-Cloud Feedbacks from Cloud-Controlling Factors: A Review journal October 2017
Potential for bias in effective climate sensitivity from state-dependent energetic imbalance journal December 2022
A Satellite View of the Synoptic-Scale Organization of Cloud Properties in Midlatitude and Tropical Circulation Systems journal July 1995
Is climate sensitivity related to dynamical sensitivity?: Dynamical Sensitivity journal May 2016
Simulation of Present-Day and Twenty-First-Century Energy Budgets of the Southern Oceans journal January 2010

Similar Records

Exploring the environmental drivers of vegetation seasonality changes in the northern extratropical latitudes: a quantitative analysis *
Journal Article · Mon Sep 18 00:00:00 EDT 2023 · Environmental Research Letters · OSTI ID:1999447

On the Links Between Ice Nucleation, Cloud Phase, and Climate Sensitivity in CESM2
Journal Article · Sat Sep 02 00:00:00 EDT 2023 · Geophysical Research Letters (Online) · OSTI ID:1999447

Evaluating Climate Models’ Cloud Feedbacks Against Expert Judgment
Journal Article · Mon Jan 24 00:00:00 EST 2022 · Journal of Geophysical Research: Atmospheres · OSTI ID:1999447

Related Subjects