The daily average land surface air temperature (SAT) simulated by 8 CMIP5 models historical experiments and that from NCEP data during 1960–2005, are used to evaluate the performance of model based on detrended fluctuation analysis (DFA) method. DFA results show SAT in most regions world exhibit long-range correlation. scaling exponents zonal distribution characteristics larg tropics while smal...

The interannual variability of the Indian Ocean, with particular focus on the Indian Ocean dipole/zonal mode (IODZM), is investigated in a 250-yr simulation of the GFDL coupled global general circulation model (CGCM). The CGCM successfully reproduces many fundamental characteristics of the climate system of the Indian Ocean. The character of the IODZM is explored, as are relationships between p...

As part of the Intercomparison of Radiation Codes in Climate Models (ICRCCM) project, careful comparisons of the performance of a large number of radiation codes were carried out, and the results compared with those of benchmark calculations. In this paper, we document the performance of a number of parameterized models which have been heavily used in climate and numerical prediction research a...

We present recent results from the design of the GFDL ocean circulation model for the Cedar multicluster architecture. The model simulates the basic aspects of largescale, baroclinic ocean circulation, including treatment of irregular bottom topography. We concentrate on several modifications and versions of the code that are designed to exploit the memory and computational hierarchy of Cedar, ...

Impacts of mixing driven by barotropic tides in a coupled climate model are investigated by using an atmosphere–ocean–ice–land coupled climate model, the GFDL CM2.0. We focus on oceanic conditions of the Northern Atlantic. Barotropic tidal mixing effects increase the surface salinity and density in the Northern Atlantic and decrease the RMS error of the model surface salinity and temperature fi...

IRD), Paris, France, and Walker Institute, University of Reading, Reading, United Kingdom; WittenberG—GFDL, Princeton, New Jersey; Fedorov—Yale University, New Haven, Connecticut; Collins—Met Office, Hadley Centre, Exeter, United Kingdom; WanG—NOAA/AOML, Miami, Florida; Capotondi—University of Colorado, and NOAA, Boulder, Colorado; oldenborGh—KNMI, De Bilt, Netherlands; stoCkdale—ECMWF, Reading...

AFFILIATIONS: Guilyardi—LOCEAN/IPSL, Paris, France, and National Centre for Atmospheric Science–Climate, University of Reading, Reading, United Kingdom; wittEnbErG—NOAA/GFDL, Princeton, New Jersey; balMasEda—ECMWF, Reading, United Kingdom; cai—CSIRO, Aspendale, Victoria, Australia; collins— University of Exeter, Exeter, United Kingdom; McPhadEn— NOAA/PMEL, Seattle, Washington; watanabE—Universi...

Underestimated rainfall over Amazonia was a common problem for the Coupled Model Intercomparison Project phase 3 (CMIP3) models. We investigate whether it still exists in the CMIP phase 5 (CMIP5) models and, if so, what causes these biases? Our evaluation of historical simulations shows that some models still underestimate rainfall over Amazonia. During the dry season, both convective and large...

The Atlantic Multidecadal Oscillation (AMO) is a pronounced signal of climate variability in the North Atlantic sea-surface temperature field. In this paper, we propose an explanation of the physical processes responsible for the timescale and the spatial pattern of the AMO. Our approach involves the analysis of solutions of a hierarchy of models. In the lowest member of the model hierarchy, wh...