lmd_Risi2010.bib

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@article{2010JGRD..11524123R,
  author = {{Risi}, C. and {Bony}, S. and {Vimeux}, F. and {Jouzel}, J.},
  title = {{Correction to ''Water-stable isotopes in the LMDZ4 general circulation model: Model evaluation for present-day and past climates and applications to climatic interpretations of tropical isotopic records''}},
  journal = {Journal of Geophysical Research (Atmospheres)},
  keywords = {water isotopes; past precipitation changes; general circulation model., water isotopes, general circulation model, past precipitation changes},
  year = 2010,
  month = dec,
  volume = 115,
  number = d14,
  eid = {D24123},
  pages = {24123},
  doi = {10.1029/2010JD015242},
  adsurl = {http://adsabs.harvard.edu/abs/2010JGRD..11524123R},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@article{2010JGRD..11524110R,
  author = {{Risi}, C. and {Bony}, S. and {Vimeux}, F. and {Frankenberg}, C. and 
	{Noone}, D. and {Worden}, J.},
  title = {{Understanding the Sahelian water budget through the isotopic composition of water vapor and precipitation}},
  journal = {Journal of Geophysical Research (Atmospheres)},
  keywords = {Global Change: Water cycles (1836), Biogeosciences: Isotopic composition and chemistry (1041, 4870), Hydrology: Water budgets, Atmospheric Processes: Global climate models (1626, 4928), Atmospheric Composition and Structure: Troposphere: composition and chemistry, water isotopes, Sahel, Sahara, general circulation models, atmospheric convection, continental recycling},
  year = 2010,
  month = dec,
  volume = 115,
  number = d14,
  eid = {D24110},
  pages = {24110},
  abstract = {{The goal of this paper is to investigate the added value of water
isotopic measurements to estimate the relative influence of large-scale
dynamics, convection, and land surface recycling on the Sahelian water
budget. To this aim, we use isotope data in the lower tropospheric water
vapor measured by the SCIAMACHY and TES satellite instruments and in
situ precipitation data from the Global Network for Isotopes in
Precipitation and collected during the African Monsoon Multidisciplinary
Analysis field campaign, together with water-tagging experiments with
the Laboratoire de Météorologie Dynamique general
circulation model (LMDZ) fitted with isotopes. We show that some
isotopic biases in LMDZ reveal the misrepresentation of dehydrating
processes that would be undetected without isotopic measurements. In dry
regions, the vapor isotopic composition is primarily controlled by the
intensity of the air dehydration. In addition, it may also keep some
memory of dehydration pathways that is erased in the humidity
distribution, namely the relative contribution of dehydration in the
tropical upper troposphere versus midlatitudes. In wet regions, vapor
and rain isotope compositions are primarily controlled by changes in
convection, through rain reevaporation and through the progressive
depletion of the vapor by convective mixing along air mass trajectories.
Gradients in vapor isotope composition along air mass trajectories may
help estimate continental recycling intensity, provided that we could
quantify the effect of convection on the isotopic composition of water
vapor.
}},
  doi = {10.1029/2010JD014690},
  adsurl = {http://adsabs.harvard.edu/abs/2010JGRD..11524110R},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@article{2010E&PSL.298..104L;,
  author = {{Landais}, A. and {Risi}, C. and {Bony}, S. and {Vimeux}, F. and 
	{Descroix}, L. and {Falourd}, S. and {Bouygues}, A.},
  title = {{Combined measurements of $^{17}$O $_{excess}$ and d-excess in African monsoon precipitation: Implications for evaluating convective parameterizations}},
  journal = {Earth and Planetary Science Letters},
  year = 2010,
  month = sep,
  volume = 298,
  pages = {104-112},
  abstract = {{Water stable isotopes ({$\delta$} $^{18}$O, {$\delta$}D) are useful
tools to depict and to understand the atmospheric water cycle. In
tropical regions, they record the variations of convective activity and
their implementation in convection schemes brings constraints on our
understanding and parameterization of this phenomena. Here, we present
for the first time measurements of a new isotopic marker of the
hydrological cycle ( $^{17}$O $_{excess}$ resulting from the
combination of {$\delta$} $^{17}$O and {$\delta$} $^{18}$O of
water) in convective regions on two different time scales: (i) during
the African monsoon onset and intra-seasonal variability (Banizoumbou,
2006) and (ii) during the squall line of the 11th of August 2006
(Niamey). $^{17}$O $_{excess}$ responds to the monsoon onset
by a \~{} 30 per meg increase as well as to different convective processes
in squall lines by \~{} 20 per meg variations. These variations parallel
those of d-excess at first order and display significant correlation
with relative humidity in the lower troposphere. Still, higher
correlation coefficients are observed between d-excess and relative
humidity than between $^{17}$O $_{excess}$ and relative
humidity, suggesting a higher influence of relative humidity on d-excess
than on $^{17}$O $_{excess}$. Using a simple reevaporation
model and a more sophisticated 2D model of a squall line, we show that
reevaporation is the process explaining the increase of d-excess and
$^{17}$O $_{excess}$ with relative humidity for these two
studies. We also show that the combination of $^{17}$O
$_{excess}$ and d-excess is a powerful tool to constrain the
representation of isotopic processes during rain reevaporation. In turn,
a good representation of such processes enables to use water isotopes to
evaluate convective parameterization in atmospheric models.
}},
  doi = {10.1016/j.epsl.2010.07.033},
  adsurl = {http://adsabs.harvard.edu/abs/2010E%26PSL.298..104L},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@article{2010JGRD..11512118R,
  author = {{Risi}, C. and {Bony}, S. and {Vimeux}, F. and {Jouzel}, J.},
  title = {{Water-stable isotopes in the LMDZ4 general circulation model: Model evaluation for present-day and past climates and applications to climatic interpretations of tropical isotopic records}},
  journal = {Journal of Geophysical Research (Atmospheres)},
  keywords = {Atmospheric Processes: Global climate models (1626, 4928), Atmospheric Processes: Paleoclimatology (0473, 4900), Global Change: Water cycles (1836), Biogeosciences: Isotopic composition and chemistry (1041, 4870), Geochemistry: Stable isotope geochemistry (0454, water isotopes, general circulation model, past precipitation changes},
  year = 2010,
  month = jun,
  volume = 115,
  number = d14,
  eid = {D12118},
  pages = {12118},
  abstract = {{We present simulations of water-stable isotopes from the LMDZ general
circulation model (the LMDZ-iso GCM) and evaluate them at different time
scales (synoptic to interannual). LMDZ-iso reproduces reasonably well
the spatial and seasonal variations of both {$\delta$}$^{18}$O and
deuterium excess. When nudged with reanalyses, LMDZ-iso is able to
capture the synoptic variability of isotopes in winter at a midlatitude
station, and the interannual variability in mid and high latitudes is
strongly improved. The degree of equilibration between the vapor and the
precipitation is strongly sensitive to kinetic effects during rain
reevaporation, calling for more synchronous vapor and precipitation
measurements. We then evaluate the simulations of two past climates:
Last Glacial Maximum (21 ka) and Mid-Holocene (6 ka). A particularity of
LMDZ-iso compared to other isotopic GCMs is that it simulates a lower d
excess during the LGM over most high-latitude regions, consistent with
observations. Finally, we use LMDZ-iso to explore the relationship
between precipitation and {$\delta$}$^{18}$O in the tropics, and we
discuss its paleoclimatic implications. We show that the imprint of
uniform temperature changes on tropical {$\delta$}$^{18}$O is weak.
Large regional changes in {$\delta$}$^{18}$O can, however, be
associated with dynamical changes of precipitation. Using LMDZ as a test
bed for reconstructing past precipitation changes through local
{$\delta$}$^{18}$O records, we show that past tropical precipitation
changes can be well reconstructed qualitatively but not quantitatively.
Over continents, nonlocal effects make the local reconstruction even
less accurate.
}},
  doi = {10.1029/2009JD013255},
  adsurl = {http://adsabs.harvard.edu/abs/2010JGRD..11512118R},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@article{2010JGRD..11510112R,
  author = {{Risi}, C. and {Landais}, A. and {Bony}, S. and {Jouzel}, J. and 
	{Masson-Delmotte}, V. and {Vimeux}, F.},
  title = {{Understanding the $^{17}$O excess glacial-interglacial variations in Vostok precipitation}},
  journal = {Journal of Geophysical Research (Atmospheres)},
  keywords = {Paleoceanography: Ice cores (0724), Biogeosciences: Isotopic composition and chemistry (1041, 4870), Atmospheric Composition and Structure: Troposphere: composition and chemistry, Global Change: Water cycles (1836), Atmospheric Processes: Paleoclimatology (0473, 4900), $^{17}$O excess, ice core isotopic composition, surface relative humidity},
  year = 2010,
  month = may,
  volume = 115,
  number = d14,
  eid = {D10112},
  pages = {10112},
  abstract = {{Combined measurements of {$\delta$}$^{18}$O, {$\delta$}$^{17}$O,
and {$\delta$}D in ice cores, leading to d excess and $^{17}$O
excess, are expected to provide new constraints on the water cycle and
past climates. We explore different processes, both in the source
regions and during the poleward transport, that could explain the
$^{17}$O excess increase by 20 per meg observed from the Last
Glacial Maximum (LGM) to Early Holocene (EH) at the Vostok station.
Using a single-column model over tropical and subtropical oceans, we
show that the relative humidity at the surface is the main factor
controlling $^{17}$O excess in source regions. Then, using a
Rayleigh-type model, we show that the $^{17}$O excess signal from
the source region is preserved in the polar snowfall, contrary to d
excess. Evaporative recharge over mid and high latitudes and
{$\delta$}$^{18}$O seasonality in polar regions can also affect the
Vostok $^{17}$O excess but cannot account for most of the 20 per
meg deglacial increase from LGM to EH. On the other hand, a decrease of
the relative humidity at the surface (rh$_{s}$) by 8 to 22\% would
explain the observed change in $^{17}$O excess. Such a change
would not necessarily be incompatible with a nearly unchanged boundary
layer relative humidity, if the surface thermodynamic disequilibrium
decreased by 4{\deg}C. Such a change in rh$_{s}$ would affect
source and polar temperatures reconstructions from {$\delta$}$^{18}$O
and d excess measurements, strengthening the interest of $^{17}$O
excess measurements to better constrain such changes.
}},
  doi = {10.1029/2008JD011535},
  adsurl = {http://adsabs.harvard.edu/abs/2010JGRD..11510112R},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@article{2010QJRMS.136S.227R,
  author = {{Risi}, C. and {Bony}, S. and {Vimeux}, F. and {Chong}, M. and 
	{Descroix}, L.},
  title = {{Evolution of the stable water isotopic composition of the rain sampled along Sahelian squall lines}},
  journal = {Quarterly Journal of the Royal Meteorological Society},
  year = 2010,
  month = jan,
  volume = 136,
  pages = {227-242},
  doi = {10.1002/qj.485},
  adsurl = {http://adsabs.harvard.edu/abs/2010QJRMS.136S.227R},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@article{2010QJRMS.136..227R,
  author = {{Risi}, C. and {Bony}, S. and {Vimeux}, F. and {Chong}, M. and 
	{Descroix}, L.},
  title = {{Evolution of the stable water isotopic composition of the rain sampled along Sahelian squall lines}},
  journal = {Quarterly Journal of the Royal Meteorological Society},
  year = 2010,
  month = jan,
  volume = 136,
  pages = {227-242},
  doi = {10.1002/qj.485},
  adsurl = {http://adsabs.harvard.edu/abs/2010QJRMS.136..227R},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}