globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-012-1469-y
Scopus ID: 2-s2.0-84876836103
Combined influence of atmospheric physics and soil hydrology on the simulated meteorology at the SIRTA atmospheric observatory
Author: Cheruy F.; Campoy A.; Dupont J.-C.; Ducharne A.; Hourdin F.; Haeffelin M.; Chiriaco M.; Idelkadi A.
Source Publication: Climate Dynamics
ISSN: 9307575
Publishing Year: 2013
Volume: 40, Issue:2017-09-10
pages begin: 2251
pages end: 2269
Language: 英语
Keyword: Boundary layer parametrization ; Climate model ; Evaluation ; Instrumented site ; Land surface ; Land-atmosphere interactions
English Abstract: The identification of the land-atmosphere interactions as one of the key source of uncertainty in climate models calls for process-level assessment of the coupled atmosphere/land continental surface system in numerical climate models. To this end, we propose a novel approach and apply it to evaluate the standard and new parametrizations of boundary layer/convection/clouds in the Earth System Model (ESM) of Institut Pierre Simon Laplace (IPSL), which differentiate the IPSL-CM5A and IPSL-CM5B climate change simulations produced for the Coupled Model Inter-comparison Project phase 5 exercise. Two different land surface hydrology parametrizations are also considered to analyze different land-atmosphere interactions. Ten-year simulations of the coupled land surface/atmospheric ESM modules are confronted to observations collected at the SIRTA (Site Instrumental de Recherche par Télédection Atmosphérique), located near Paris (France). For sounder evaluation of the physical parametrizations, the grid of the model is stretched and refined in the vicinity of the SIRTA, and the large scale component of the modeled circulation is adjusted toward ERA-Interim reanalysis outside of the zoomed area. This allows us to detect situations where the parametrizations do not perform satisfactorily and can affect climate simulations at the regional/continental scale, including in full 3D coupled runs. In particular, we show how the biases in near surface state variables simulated by the ESM are explained by (1) the sensible/latent heat partitionning at the surface, (2) the low level cloudiness and its radiative impact at the surface, (3) the parametrization of turbulent transport in the surface layer, (4) the complex interplay between these processes. We also show how the new set of parametrizations can improve these biases. © 2012 Springer-Verlag.
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Appears in Collections:过去全球变化的重建

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Affiliation: Laboratoire de Météorologie Dynamique du CNRS, 4 Place Jussieu, case courrier 99, 75252 Paris Cedex 05, France; LMD, 4 Place Jussieu, case courrier 99, 75252 Paris Cedex 05, France; IPSL, Ecole Polytechnique, 91128 Palaiseau Cedex, France; Sisyphe, UPMC/CNRS, Paris, France; LATMOS, Paris, France

Recommended Citation:
Cheruy F.,Campoy A.,Dupont J.-C.,et al. Combined influence of atmospheric physics and soil hydrology on the simulated meteorology at the SIRTA atmospheric observatory[J]. Climate Dynamics,2013-01-01,40(2017-09-10)
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