lmd_Dufresne2007.bib
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@article{2007ClDy...29..501B,
author = {{Braconnot}, P. and {Hourdin}, F. and {Bony}, S. and {Dufresne}, J.~L. and
{Grandpeix}, J.~Y. and {Marti}, O.},
title = {{Impact of different convective cloud schemes on the simulation of the tropical seasonal cycle in a coupled ocean atmosphere model}},
journal = {Climate Dynamics},
keywords = {Orientation-preserving condition, Finite element analysis, Compressible hyperelasticity},
year = 2007,
month = oct,
volume = 29,
pages = {501},
abstract = {{The simulation of the mean seasonal cycle of sea surface temperature
(SST) remains a challenge for coupled ocean atmosphere general
circulation models (OAGCMs). Here we investigate how the numerical
representation of clouds and convection affects the simulation of the
seasonal variations of tropical SST. For this purpose, we compare
simulations performed with two versions of the same OAGCM differing only
by their convection and cloud schemes. Most of the atmospheric
temperature and precipitation differences between the two simulations
reflect differences found in atmosphere-alone simulations. They affect
the ocean interior down to 1,000 m. Substantial differences are found
between the two coupled simulations in the seasonal march of the
Intertropical Convergence Zone in the eastern part of the Pacific and
Atlantic basins, where the equatorial upwelling develops. The results
confirm that the distribution of atmospheric convection between ocean
and land during the American and African boreal summer monsoons plays a
key role in maintaining a cross equatorial flow and a strong windstress
along the equator, and thereby the equatorial upwelling. Feedbacks
between convection, large-scale circulation, SST and clouds are
highlighted from the differences between the two simulations. In one
case, these feedbacks maintain the ITCZ in a quite realistic position,
whereas in the other case the ITCZ is located too far south close to the
equator.
}},
doi = {10.1007/s00382-007-0244-y},
adsurl = {http://adsabs.harvard.edu/abs/2007ClDy...29..501B},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
@article{2007ClDy...28..215K,
author = {{Krinner}, G. and {Magand}, O. and {Simmonds}, I. and {Genthon}, C. and
{Dufresne}, J.-L.},
title = {{Simulated Antarctic precipitation and surface mass balance at the end of the twentieth and twenty-first centuries}},
journal = {Climate Dynamics},
year = 2007,
month = feb,
volume = 28,
pages = {215-230},
abstract = {{The aim of this work is to assess potential future Antarctic surface
mass balance changes, the underlying mechanisms, and the impact of these
changes on global sea level. To this end, this paper presents
simulations of the Antarctic climate for the end of the twentieth and
twenty-first centuries. The simulations were carried out with a
stretched-grid atmospheric general circulation model, allowing for high
horizontal resolution (60 km) over Antarctica. It is found that the
simulated present-day surface mass balance is skilful on continental
scales. Errors on regional scales are moderate when observed sea surface
conditions are used; more significant regional biases appear when sea
surface conditions from a coupled model run are prescribed. The
simulated Antarctic surface mass balance increases by 32 mm water
equivalent per year in the next century, corresponding to a sea level
decrease of 1.2 mm year$^{-1}$ by the end of the
twenty-first century. This surface mass balance increase is largely due
to precipitation changes, while changes in snow melt and turbulent
latent surface fluxes are weak. The temperature increase leads to an
increased moisture transport towards the interior of the continent
because of the higher moisture holding capacity of warmer air, but
changes in atmospheric dynamics, in particular off the Antarctic coast,
regionally modulate this signal.
}},
doi = {10.1007/s00382-006-0177-x},
adsurl = {http://adsabs.harvard.edu/abs/2007ClDy...28..215K},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
