WorldCat Identities

Xie, S.

Overview
Works: 33 works in 34 publications in 2 languages and 54 library holdings
Roles: Contributor, Author, Other
Publication Timeline
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Most widely held works by S Xie
Evaluation of an improved convection triggering mechanism in the ncar community atmosphere model cam2 under capt framework( )

1 edition published in 2003 in English and held by 5 WorldCat member libraries worldwide

The problem that convection over land is overactive during warm-season daytime in the National Center for Atmospheric Research (NCAR) Community Atmosphere Model CAM2 and its previous version (CCM3) has been found both in its single-column model (SCM) simulations (Xie and Zhang 2000; Ghan et al. 2000; Xie et al. 2002) and in its full general circulation model (GCM) short-range weather forecasts (Phillips et al. 2003) and climate simulations (Dai and Trenberth 2003). These studies showed that this problem is closely related to the convection triggering mechanism used in its deep convection scheme (Zhang and McFarlane 1995), which assumes that convection is triggered whenever there is positive convective available potential energy (CAPE). The positive CAPE triggering mechanism initiates model convection too often during the day because of the strong diurnal variations in the surface isolation and the induced CAPE diurnal change over land in the warm season. To reduce the problem, Xie and Zhang (2000) introduced a dynamic constraint, i.e., a dynamic CAPE generation rate (DCAPE) determined by the large-scale advective tendencies of temperature and moisture, to control the onset of deep convection. They showed that positive DCAPE is closely associated with convection in observations and the dynamic constraint could largely reduce the effect of the strong diurnal variations in the surface fluxes on the initiation of convection. Using the SCM version of CCM3, which has the same deep convection scheme as CAM2, Xie and Zhang (2000) showed that considerable improvements can be obtained in the model simulation of precipitation and other thermodynamic fields when the dynamic constraint was applied to the model triggering function. However, the performance of the improved convection triggering mechanism in the full GCM has not been tested. In this study, we will test the improved convection trigger mechanism in CAM2 under the U.S. Department of Energy's Climate Change Prediction Program (CCPP)--Atmospheric Radiation Measurement Program (ARM) Parameterization Testbed (CAPT) framework, which provides a flexible environment for running climate models in Numerical Weather Prediction (NWP) mode. In comparison with testing physical parameterizations in climate simulations, the CAPT strategy uses more available observations and high-frequency NWP analyses to evaluate model performance in short-range weather forecasts. This allows specific parameterization deficiencies to be identified before the compensation of multiple errors masks the deficiencies, as can occur in model climate simulation. Another advantage of the CAPT approach is its capability to link model deficiencies directly with atmospheric processes through case studies using data collected from major field programs (e.g., ARM)
Measurement of the top quark mass using the template method in the lepton plus jets channel with in situ W ---] j j calibration at CDF-II( )

1 edition published in 2006 in English and held by 5 WorldCat member libraries worldwide

We report an updated measurement of the top quark mass in the lepton plus jets channel of t{bar t} events from p{bar p} collisions at {radical}s = 1.96 TeV. This measurement uses a dataset with integrated luminosity of 680 pb{sup -1}, containing 360 t{bar t} candidates separated into four subsamples. A top quark mass is reconstructed for each event by using energy and momentum constraints on the top quark pair decay products. We also employ the reconstructed mass of hadronic W boson decays W {yields} jj to constrain in situ the largest systematic uncertainty of the top quark mass measurement: the jet energy scale. Monte Carlo templates of the reconstructed top quark and W boson mass are produced as a function of the true top quark mass and the jet energy scale. The distribution of reconstructed top quark and W boson mass in the data are compared to the Monte Carlo templates using a likelihood fit to obtain: M{sub top} = 173.4 {+-} 2.8 GeV/c{sup 2}
P04.86. Socio-demographic variations in barriers to participation in an acupuncture clinical trial by T Tan( )

1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

Diverticular disease epidemiology: acute hospitalisations are growing fastest in young men by J. B Broad( )

1 edition published in 2019 in English and held by 2 WorldCat member libraries worldwide

Observationally derived rise in methane surface forcing mediated by water vapour trends by D. R Feldman( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

The Midlatitude Continental Convective Clouds Experiment (MC3E) sounding network: operations, processing and analysis by M. P Jensen( )

1 edition published in 2015 in English and held by 2 WorldCat member libraries worldwide

ANTARCTIC ICE SHEET SLOPE AND ASPECT BASED ON ICESAT'S REPEAT ORBIT MEASUREMENT by L Yuan( )

1 edition published in 2017 in English and held by 2 WorldCat member libraries worldwide

Study on Technology for Precision Correction of Land Survey Data based on Plotting Result Data and Feature Points by Guojun Zeng( )

1 edition published in 2014 in English and held by 2 WorldCat member libraries worldwide

An intercomparison of radar-based liquid cloud microphysics retrievals and implications for model evaluation studies by Zhuo Huang( )

1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

Assessing microstructures of pyrrhotites in basalts by multifractal analysis by S Xie( )

1 edition published in 2010 in English and held by 2 WorldCat member libraries worldwide

Identification of long-lived charged particles using time-of-flight systems at the upgraded LHC detectors by O Cerri( )

1 edition published in 2019 in English and held by 2 WorldCat member libraries worldwide

Impairment of Endothelial Cell Function Induced by Hemoglobin A1c and the Potential Mechanisms( )

1 edition published in 2015 in English and held by 2 WorldCat member libraries worldwide

Evaluation of cloud fraction and its radiative effect simulated by IPCC AR4 global models against ARM surface observations by Yingyi Qian( )

1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

Whether G-CSF administration has beneficial effect on the outcome after assisted reproductive technology? A systematic review and meta-analysis by J Zhao( )

1 edition published in 2016 in English and held by 2 WorldCat member libraries worldwide

FOREST COVER CHANGE ANALYSIS IN INNER MONGOLIA USING REMOTE SENSING DATA by S Xie( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

The Measurements of Axisymmetric Air Turbulent Jet Flow with an Individual Realization Laser Velocimeter System( Book )

1 edition published in 1985 in English and held by 1 WorldCat member library worldwide

This paper describes the measurements of axisymmetric air turbulent jet flow with the use of an IRLV system. The distributions of axial mean velocity, turbulent intensity and probability density functions of velocity in the initial region of jet flow were obtained. The data from LV were sampled and processed automatically by a microprocessor. The experiments show that the velocity measurements can be realized even with the air particles in their natural state. The measurements of the mean velocity were also simultaneously made with aa hot wire anemometer in order to compare with those made with a LV. Their results were in good coincidence in the core flow region. The velocity bias was increased with the decrease of data rate and increase of turbulent intensity in the mixing boundary layer. Keywords: Laser velocimeters (LV); Velocity measurements. (Translations)
Replacing fish meal with vegetable protein sources in feed for juvenile red swamp crayfish, Procambarus clarkii: Effects of amino acids supplementation on growth and feed utilization( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Abstract: An 8-week growth trial was conducted to investigate the effects of dietary fish meal replacement with a vegetable mixture of soybean meal and rapeseed meal (1:1) on growth of juvenile red swamp crayfish. Nine isonitrogenous diets were designed: V0, V34, V50, V65, V73 and V81 with six levels of vegetable proteins, and VA48, VA63 and VA78 by further adding crystalline lysine and methionine into V50, V65 and V81. Compared with V0, V34 significantly improved the specific growth rate (SGR), while V65, V73, V81 and VA78 depressed the SGR (p <.05). Feeding rate showed a decreasing trend as dietary vegetable protein level increased (p <.05), except that in VA48 group. Significantly lower FCR and higher PER were observed in V34 group, whereas all vegetable protein diets depressed the feed utilization of crayfish (p <.05). Crayfish fed with diets containing vegetable proteins showed significantly lower hepatosomatic indices and higher condition factors than the control (p <.05). Muscle lipid content was significantly (p <.05) lowered in V81 group, but not in VA78 group. The results suggested that 338 g/kg vegetable protein improved growth performance of crayfish. Excessive vegetable protein depressed the growth of crayfish, which could be prevented by lysine and methionine supplementation except for the all vegetable protein diets
De invloed van IFRS op earnings management in de Europese ondernemingen by S Xie( )

1 edition published in 2007 in Dutch and held by 1 WorldCat member library worldwide

Efficiency of Reversible Optical Storage in Azo Polymers( )

1 edition published in 1993 in English and held by 1 WorldCat member library worldwide

Optical information can be stored, erased or overwritten on polymer thin films using polarized light. The information is in the power probe beam. We have measured the efficiency of the writing beam in a number of polymer and copolymer films containing azobenzene dyes as side groups. In this paper we compare the results amongst the polymers have synthesized. Preliminary results indicate that copolymers may be optimized to allow for the preparation of efficient thick films for erasable optical recording. Optical storage, Azo polymers, Efficiency, Copolymers
 
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English (19)

Dutch (1)