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Testing, Model Simulations of the Thermocline Depth Variability in the Tropical Atlantic from 1982 through 1984
Publisher: American Meteorological Society
Abstract: The multivariate model toning procedure of Frankignoul et al. has been extended to the general time-series case, thus allowing to test ocean model ability at simulating the interannual variability. The method aims at ...
Characterization of Model Spread in PMIP2 Mid-Holocene Simulations of the African Monsoon
Publisher: American Meteorological Society
Abstract: imulations of the West African monsoon (WAM) for the present-day climate (0 ka) and the mid-Holocene (6 ka) using the coupled models from the Paleoclimate Modelling Intercomparison Project phase 2 (PMIP2) are assessed in ...
Sensitivity of the African and Asian Monsoons to Mid-Holocene Insolation and Data-Inferred Surface Changes
Publisher: American Meteorological Society
Abstract: Orbital forcing alone is not sufficient to explain the massive northward penetration of monsoon rains in Africa shown by data during the mid-Holocene (6000 yr ago). Feedbacks associated with changes in SSTs and land surface ...
Impact of Greenhouse Gas Concentration Changes on Surface Energetics in IPSL-CM4: Regional Warming Patterns, Land–Sea Warming Ratios, and Glacial–Interglacial Differences
Publisher: American Meteorological Society
Abstract: The temperature response to a greenhouse gas (GHG) concentration change is studied in an ocean?atmosphere coupled model?L?Institut Pierre-Simon Laplace Coupled Model, version 4 (IPSL-CM4)?for both a glacial and an interglacial ...
Hot Desert Albedo and Climate Change: Mid-Holocene Monsoon in North Africa
Publisher: American Meteorological Society
Abstract: Many models in the framework of the Paleoclimate Modelling Intercomparison Project have undertaken simulations of the mid-Holocene (6 kyr ago) climate change. Analysis of the results have mainly focused on the North African ...
Atmosphere Feedbacks during ENSO in a Coupled GCM with a Modified Atmospheric Convection Scheme
Publisher: American Meteorological Society
Abstract: The too diverse representation of ENSO in a coupled GCM limits one?s ability to describe future change of its properties. Several studies pointed to the key role of atmosphere feedbacks in contributing to this diversity. ...
Impact of Freshwater Release in the North Atlantic under Different Climate Conditions in an OAGCM
Publisher: American Meteorological Society
Abstract: The response of climate to freshwater input in the North Atlantic (NA) has raised a lot of concern about the issue of climate stability since the discovery of abrupt coolings during the last glacial period. Such coolings ...
An Evaluation Metric for Intraseasonal Variability and its Application to CMIP3 Twentieth-Century Simulations
Publisher: American Meteorological Society
Abstract: The intraseasonal variability (ISV) is an intermittent phenomenon with variable perturbation patterns. To assess the robustness of the simulated ISV in climate models, it is thus interesting to consider the distribution ...
Progress in Paleoclimate Modeling
Publisher: American Meteorological Society
Abstract: This paper briefly surveys areas of paleoclimate modeling notable for recent progress. New ideas, including hypotheses giving a pivotal role to sea ice, have revitalized the low-order models used to simulate the time ...
Understanding ENSO Diversity
Publisher: American Meteorological Society
Abstract: l Niño?Southern Oscillation (ENSO) is a naturally occurring mode of tropical Pacific variability, with global impacts on society and natural ecosystems. While it has long been known that El Niño events display a diverse ...