Uncertainties due to transport-parameter sensitivity in an efficient 3-D ocean-climate model

Assessing ocean-model sensitivity to wind forcing uncertainties

Spontaneous abrupt climate change due to an atmospheric blocking-sea-ice-ocean feedback in an unforced climate model simulation.

Abrupt climate change is abundant in geological records, but climate models rarely have been able to simulate such events in response to realistic forcing. Here we report on a spontaneous abrupt cooling event, lasting for more than a century, with a temperature anomaly similar to that of the Little Ice Age. The event was simulated in the preindustrial control run of a high-resolution climate mo...

Formulation of an ocean climate model

Formulation of an ocean model for global climate simulations S. M. Griffies, A. Gnanadesikan, K. W. Dixon, J. P. Dunne, R. Gerdes, M. J. Harrison, A. Rosati, J. L. Russell, B. L. Samuels, M. J. Spelman, M. Winton, and R. Zhang NOAA Geophysical Fluid Dynamics Laboratory, Princeton, USA Alfred-Wegener-Institut für Polarund Meeresforschung, Bremerhaven, Germany Program in Atmospheric and Oceanic S...

Decoupled Response of Ocean Acidification to Variations in Climate Sensitivity

It is now well understood that the global surface ocean, whose pH has been reduced by;0.1 in response to rising atmospheric CO2 since industrialization, will continue to become more acidic as fossil fuel CO2 emissions escalate. However, it is unclear how uncertainties in climate sensitivity to future CO2 emissions will alter the manifestation of ocean acidification. Using an earth system model ...

Simulated by a 3-D Transport Model: A Sensitivity Study to Vegetation and Soil Fractionation Factors

The l so /160 ratio in atmospheric CO~ is a signal dominated by the processes by which the global land biosphere absorbs and respires COs. Potentially it makes it possible to separate the photosynthesis from the total ecosystem respiration provided that leaf COs and soil COs have different isotopic signatures, that the air-sea exchange is correctly treated and that the isotopic value of anthrop...