Evidence for Large Decadal Variability in the Tropical Mean Radiative Energy Budget

  title={Evidence for Large Decadal Variability in the Tropical Mean Radiative Energy Budget},
  author={Bruce A. Wielicki and Takmeng Wong and Richard P. Allan and Anthony Slingo and Jeffrey T. Kiehl and Brian J. Soden and Charles T. Gordon and Alvin J. Miller and Shi-Keng Yang and David A. Randall and Franklin Rivers Robertson and Joel Susskind and Herbert Jacobowitz},
  pages={841 - 844}
It is widely assumed that variations in Earth's radiative energy budget at large time and space scales are small. We present new evidence from a compilation of over two decades of accurate satellite data that the top-of-atmosphere (TOA) tropical radiative energy budget is much more dynamic and variable than previously thought. Results indicate that the radiation budget changes are caused by changes in tropical mean cloudiness. The results of several current climate model simulations fail to… 

The Sensitivity of the Tropical-Mean Radiation Budget

Abstract A key disagreement exists between global climate model (GCM) simulations and satellite observations of the decadal variability in the tropical-mean radiation budget. Measurements from the

Marine boundary layer clouds at the heart of tropical cloud feedback uncertainties in climate models

The radiative response of tropical clouds to global warming exhibits a large spread among climate models, and this constitutes a major source of uncertainty for climate sensitivity estimates. To

Climate change during 1985–1999: Cloud interactions determined from satellite measurements

We have extended two recent studies that present evidence for significant decadal variability in the top‐of‐atmosphere (TOA) tropical radiative energy budget by combining satellite measurements of

Revisiting the determination of climate sensitivity from relationships between surface temperature and radiative fluxes

We analyze the radiative damping of climatological variations in surface temperature based on relationships between surface temperature and top‐of‐atmosphere radiative fluxes for both satellite

Evidence for atmospheric variability over the Pacific on decadal timescales

An index of Pacific decadal variability based on a multivariate empirical orthogonal function analysis of National Centers for Environmental Prediction reanalysis is used to extract associated

Interannual variability of tropical upper tropospheric humidity and cloud: Current climate variation and future climate change

The theme of this research is to study the tropical water vapor and clouds, especially their relation with the large-scale environment at the interannual time scale as well as their changes in the

Influence of Dynamics on the Changes in Tropical Cloud Radiative Forcing during the 1998 El Nino

Abstract Satellite measurements of the radiation budget and data from the U.S. National Centers for Environmental Prediction–National Center for Atmospheric Research reanalysis are used to

How Well are Recent Climate Variability Signals Resolved by Satellite Radiative Flux Estimates

One notable aspect of Earth s climate is that although the planet appears to be very close to radiative balance at top-of-atmosphere (TOA), the atmosphere itself and underlying surface are not.

Can current climate model forcings explain the spatial and temporal signatures of decadal OLR variations?

Top of atmosphere broadband radiative fluxes derived from satellite measurements exhibit surprisingly large decadal variability in the tropics which appears to be related to changes in cloudiness.

Tropical Pacific–Driven Decadel Energy Transport Variability

The atmospheric energy transport variability associated with decadal sea surface temperature variability in the tropical Pacific is studied using an atmospheric primitive equation model coupled to a



Multidecadal changes in the vertical temperature structure of the tropical troposphere

Associated lapse-rate changes show a decrease in the static stability of the atmosphere, which exceeds unforced static stability variations in climate simulations with state-of-the-art coupled ocean-atmosphere models.

Evidence for Strengthening of the Tropical General Circulation in the 1990s

By analyzing temporal changes in the frequency of occurrence of emitted thermal and reflected solar fluxes, the effects of El Niño–Southern Oscillation are minimized, and an independent longer-time-scale variation of the radiation budget is identified.

Tropical Sensitivity of a Coupled Model to Specified ISCCP Low Clouds

Abstract The seasonal cycle of SST observed in the eastern equatorial Pacific is poorly simulated by many ocean–atmosphere coupled GCMs. This deficiency may be partly due to an incorrect prediction

Mission to planet Earth: Role of clouds and radiation in climate

The role of clouds in modifying the earth's radiation balance is well recognized as a key uncertainty in predicting any potential future climate change. This statement is true whether the climate

Detection of anthropogenic climate change using an atmospheric GCM

Abstract Atmosphere-only general circulation models are shown to be a useful tool for detecting an anthropogenic effect on climate and understanding recent climate change. Ensembles of atmospheric

Radiative Climate Forcing by the Mount Pinatubo Eruption

Radiative flux anomalies derived from the National Aeronautics and Space Administration (NASA) spaceborne Earth Radiation Budget Experiment were used to determine the volcanic radiative forcing that

Impact of ENSO on SST Variability in the North Pacific and North Atlantic: Seasonal Dependence and Role of Extratropical Sea–Air Coupling

Abstract The influences of El Nino–Southern Oscillation (ENSO) events in the tropical Pacific on interannual variability of the coupled ocean–atmosphere systems in the North Pacific and North

Response of Climate Simulation to a New Convective Parameterization in the National Center for Atmospheric Research Community Climate Model (CCM3)

Abstract This study examines the response of the climate simulation by the National Center for Atmospheric Research Community Climate Model (CCM3) to the introduction of the Zhang and McFarlane

Validation of the CERES/TRMM ERBE-like monthly mean clear-sky longwave dataset and the effects of the 1998 ENSO event

Abstract The Clouds and the Earth’s Radiant Energy System (CERES) is a new National Aeronautics and Space Administration space-borne measurement project for monitoring the radiation environment of

Clouds and the Earth's Radiant Energy System (CERES): An Earth Observing System Experiment

Abstract Clouds and the Earth's Radiant Energy System (CERES) is an investigation to examine the role of cloud/radiation feedback in the Earth's climate system. The CERES broadband scanning