Not exact matches
Here we analyze a series of climate
model experiments along with observational data to show that the recent warming trend in Atlantic sea surface temperature and the corresponding trans - basin displacements of the main atmospheric pressure centers were key drivers of the observed Walker
circulation intensification, eastern Pacific cooling, North American rainfall trends and western Pacific sea - level rise.
And
here is just one example from a white paper of Jim Hurrell which will be published soon, where you see that the strength of the Meridional Overturning
Circulation may be predictable, provided you have suitable initial conditions; you can initialize your climate
model.
Rowlands (2012) write, «
Here we present results from a multi-thousand-member perturbed - physics ensemble of transient coupled atmosphere — ocean general
circulation model simulations.
Here, FOR values are derived from a General
Circulation Model by extracting OLR and SLE over areas in east - central Europe (at about 60 ° N) one hour after injecting appropriate CO2 concentration (adjustments to the atmospheric profile are thus excluded) to the Feb. 1 midnight simulation.
Here a simple biologically and physically - based
model of sapflow potential is used to assess observed changes in sapflow across the Northeastern US from 1980 to 2006; document the correspondence between these observations and independent downscaled atmosphere ocean general
circulation model (AOGCM) simulations of conditions during this period; and quantify changes in sapflow potential through 2100.
A simple engine
model (nothing new
here but simplification) with the firebox in, say, 20S to 20N and the exhaust 50 - 60Lat and poleward effected by air and water
circulation (return
circulation of cold for re - heating).
Here we use an ensemble of simulations with a coupled ocean — atmosphere
model to show that the sea surface temperature anomalies associated with central Pacific El Niño force changes in the extra-tropical atmospheric
circulation.
Testing an astronomically based decadal - scale empirical harmonic climate
model versus the IPCC (2007) general
circulation climate
models, 12/2011; read more
here.
Here we present results from a multi-thousand-member perturbed - physics ensemble of transient coupled atmosphere — ocean general
circulation model simulations.
Let's be clear
here, they're theorized feedbacks in unverified general
circulation models whose results fit the IPCC's expectations, and as you know, when expectations are met it's difficult for even good scientists to look further, let alone for the politicians running the show.
Here we use a coupled atmosphere - ocean general
circulation model to simulate the climate of the mid-Pliocene warm period (about three million years ago), and analyse the forcings and feedbacks that contributed to the relatively warm temperatures.
Even a simple ocean
model usually has a number of slightly different equilibria actually, due to shifts in the location of convective activity (by a few grid boxes - I'm not talking
here about a big reorganisation of the
circulation).
Granted we're talking about more
modeling here, but mesoscale
circulation driven by «daily and six - hourly momentum and heat fluxes» sound to me like something tropical cyclones could cause.
Relevant text from the AR4 Chapter 8: «Atmosphere - Ocean General
Circulation Models do not seem to have difficulty in simulating IPO - like variability... [T]
here has been little work evaluating the amplitude of Pacific decadal variability in AOGCMs.
We see similar excursions from the trend line in our
modelling, so we feel that there is an actual variability
here that is associated with year - to - year changes in the atmospheric
circulation.
Here we explain this interhemispheric asymmetry using an atmospheric general
circulation model coupled to a slab ocean
model.
Coupled climate
model simulations for a period of about 10,000 years would be probably needed to capture these kinds of
circulations (I am just speculating
here).
«In addition, we have shown
here that global
circulation models vary widely in their drought - frequency projections, particularly later in the century and along higher emissions scenarios,» said Yohe.
Here we probe the system to determine whether certain regions of the Southern Ocean are more critical than others for air — sea CO2 balance and the biological export production, by increasing surface nutrient drawdown in an ocean general
circulation model.
Among the suite of
circulation models examined
here, the largest reduction in atmospheric pCO2 of 44 — 88 ppm occurs in a
model where reduced overturning rates of both southern and northern sourced deep waters result in a four-fold increase in the Southern Ocean deep water ventilation age.