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Neggers, R.A.J. (author), Ackerman, Andrew S. (author), Angevine, W. M. (author), Bazile, Eric (author), Beau, I. (author), Blossey, P. N. (author), Boutle, I. A. (author), de Bruijn, C. (author), cheng, A (author), van der Dussen, J.J. (author), Fletcher, J. (author), Dal Gesso, S. (author), Jam, A. (author), Kawai, H (author), Cheedela, S. K. (author), Larson, V. E. (author), Lefebvre, Marie Pierre (author), Lock, A. P. (author), Meyer, N. R. (author), de Roode, S.R. (author), de Rooy, WC (author), Sandu, I (author), Xiao, H (author), Xu, K. M. (author)Results are presented of the GASS/EUCLIPSE single-column model intercomparison study on the subtropical marine low-level cloud transition. A central goal is to establish the performance of state-of-the-art boundary-layer schemes for weather and climate models for this cloud regime, using large-eddy simulations of the same scenes as a...journal article 2017
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Daleu, C. L. (author), Plant, R. S. (author), Woolnough, S. J. (author), Sessions, S. (author), Herman, M. J. (author), Sobel, AH (author), Wang, S. (author), Kim, D. (author), cheng, A (author), Bellon, G. (author), Peyrille, P. (author), Ferry, F. (author), Siebesma, A.P. (author), Ulft, LH (author)As part of an international intercomparison project, the weak temperature gradient (WTG) and damped gravity wave (DGW) methods are used to parameterize large-scale dynamics in a set of cloud-resolving models (CRMs) and single column models (SCMs). The WTG or DGW method is implemented using a configuration that couples a model to a reference...journal article 2016
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Daleu, C. L. (author), Plant, R. S. (author), Woolnough, S. J. (author), Sessions, S. (author), Herman, M. J. (author), Sobel, A. (author), Wang, S. (author), Kim, D. (author), Cheng, A. (author), Bellon, G. (author), Peyrille, P. (author), Ferry, F. (author), Siebesma, A.P. (author), Van Ulft, L. (author)As part of an international intercomparison project, a set of single-column models (SCMs) and cloud-resolving models (CRMs) are run under the weak-temperature gradient (WTG) method and the damped gravity wave (DGW) method. For each model, the implementation of the WTG or DGW method involves a simulated column which is coupled to a reference...journal article 2015
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Zhang, M. (author), Bretherton, C.S. (author), Blossey, P.N. (author), Austin, P.H. (author), Bacmeister, J.T. (author), Bony, S. (author), Brient, F. (author), Cheedela, S.K. (author), Cheng, A. (author), Del Genio, A.D. (author), De Roode, S.R. (author), Endo, S. (author), Franklin, C.N. (author), Golaz, J.C. (author), Hannay, C. (author), Heus, T. (author), Isotta, F.A. (author), Dufresne, J.L. (author), Kang, I.S. (author), Kawai, H. (author), Köhler, M. (author), Larson, V.E. (author), Liu, Y. (author), Lock, A.P. (author), Lohmann, U. (author), Khairoutdinov, M.F. (author), Molod, A.M. (author), Neggers, R.A.J. (author), Rasch, P. (author), Sandu, I. (author), Senkbeil, R. (author), Siebesma, A.P. (author), Siegenthaler-Le Drian, C. (author), Stevens, B. (author), Suarez, M.J. (author), Xu, K.M. (author), Von Salzen, K. (author), Webb, M.J. (author), Wolf, A. (author), Zhao, M. (author)CGILS—the CFMIP-GASS Intercomparison of Large Eddy Models (LESs) and single column models (SCMs)—investigates the mechanisms of cloud feedback in SCMs and LESs under idealized climate change perturbation. This paper describes the CGILS results from 15 SCMs and 8 LES models. Three cloud regimes over the subtropical oceans are studied: shallow...journal article 2013
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Blossey, P.N. (author), Bretherton, C.S. (author), Zhang, M. (author), Cheng, A. (author), Endo, S. (author), Heus, T. (author), Liu, Y. (author), Lock, A.P. (author), De Roode, S.R. (author), Xu, K.M. (author)Subtropical marine low cloud sensitivity to an idealized climate change is compared in six large-eddy simulation (LES) models as part of CGILS. July cloud cover is simulated at three locations over the subtropical northeast Pacific Ocean, which are typified by cold sea surface temperatures (SSTs) under well-mixed stratocumulus, cool SSTs under...journal article 2013
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VanZanten, M.C. (author), Stevens, B. (author), Nuijens, L. (author), Siebesma, A.P. (author), Ackerman, A. (author), Burnet, F. (author), Cheng, A. (author), Couvreux, F. (author), Jiang, H. (author), Khairoutdinov, M. (author), Kogan, Y. (author), Lewellen, D.C. (author), Mechem, D. (author), Nakamura, K. (author), Noda, A. (author), Shipway, B.J. (author), Slawinska, J. (author), Wang, S. (author), Wyszogrodzki, A. (author)Twelve large?eddy simulations, with a wide range of microphysical representations, are compared to each other and to independent measurements. The measurements and the initial and forcing data for the simulations are taken from the undisturbed period of the Rain in Cumulus over the Ocean (RICO) field study. A regional downscaling of...journal article 2010
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Cheng, A. (author)This design mainly proposes a readout scheme for MEMS microphone with positive feedback to decrease the parasitic capacitance. It is designed in CMOS014 technology with a supply voltage of 3.3 V. The proposed architecture can increase the microphone’s sensitivity with a comparatively low bias voltage. It enables the microphone to achieve high...master thesis 2009