Sensitivity of the regional climate model RegCM4.2 to planetary boundary layer parameterisation

Güttler, Ivan; Branković, Čedo; O’Brien, T. A.; Coppola, Erika; Grisogono, Branko; Giorgi, Filippo

doi:10.1007/s00382-013-2003-6

Cited by 29 publications

(35 citation statements)

References 63 publications

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“…Finally, in the case of minimum and maximum temperature, a reduction of warm biases was detected in UW-PBL scheme. Similar are the findings of [6]. In contrast to MIT-Emanuel scheme, Grell scheme presents a cold bias, which is in agreement with the findings of [4].…”

Section: Discussionsupporting

confidence: 82%

“…The authors also examined the modifications that occur when changing the model's ocean flux scheme and concluded to a reduction of the cold bias in BATS1e scheme and an enhancement of convective precipitation. In terms of planetary boundary layer configurations, UW-PBL scheme appears to be more advantageous in regions with warm and dry biases [6]. Changes in land cover data affects regional climate models and as a result atmospheric circulation and seasonal and interannual variability are influenced [7].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the Sensitivity of the Updated RegCM4 Model to Physics Parameterizations over the Mediterranean Region: Precipitation and Temperature Simulations

Velikou

Τολίκα

2017

Proceedings of the 2nd International Electronic Conference on Atmospheric Sciences

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Τhe main purpose of this research is to study the sensitivity of regional climate model RegCM4.4.5.1 to the different physics parameterization schemes in the Mediterranean region. The spatial resolution of the model is 25 × 25 km. Different ERA-Interim-driven simulations were performed with changes in the model's configurations for the time period [1981][1982][1983][1984][1985][1986][1987][1988][1989][1990]. The different simulated data of temperature and precipitation were processed seasonally and the differences between the simulations were examined. The statistical significance of the differences is calculated with Student's t-test. Aiming a more detailed evaluation of the changes that occur, a division of the area of study into five sub-regions was performed according to the common EURO-CORDEX analysis domain and the Taylor diagrams for the examined parameters were calculated. From the analysis of the results it was found that Grell, Mixed, UW-PBL and CORINE simulations present a cold bias, while in BATS1e run temperature is increased. Additionally, Grell, Mixed and UW-PBL simulations present a decrease of precipitation except for winter, where in Grell simulations total precipitation is increased. In BATS1e run an increase of the parameter is detected. Finally, changes in land cover led to a reduction of the parameter during winter and an increase in summer.

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Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Evaluation of the Sensitivity of the Updated RegCM4 Model to Physics Parameterizations over the Mediterranean Region: Precipitation and Temperature Simulations

Velikou

Τολίκα

2017

Proceedings of the 2nd International Electronic Conference on Atmospheric Sciences

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“…not shown). Güttler et al (2013) used the RegCM4.2 (with BATS and MIT schemes) to evaluate the sensitivity to the Holtslag and UW-PBL schemes over Europe. In this analysis they also obtained a reduction of the warm bias with UW-PBL.…”

Section: Sensitivity To the Pbl Schemes: S_ctrl S_pbl And S_pbl_mitmentioning

confidence: 99%

Assessment of RegCM4.3 over the CORDEX South America domain: sensitivity analysis for physical parameterization schemes

Reboita¹,

Fernández²,

Llopart³

et al. 2014

Clim. Res.

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In mid-2012, the Abdus Salam International Centre for Theoretical Physics (ICTP) released version 4.3 of the Regional Climate Model (RegCM4.3). This version includes a new surface scheme, the Common Land Model (CLM); a new planetary boundary layer (PBL) scheme, the University of Washington PBL (UW-PBL); and new convection schemes including Tiedtke, and Mixed1 and Mixed2 -with Grell (MIT) over the land and MIT (Grell) over the ocean for Mixed1 (Mixed2). These implementations suggest the necessity of an evaluation study to determine the best configuration of RegCM4.3 for simulating the climate of South America (SA). The main motivation is to come up with the best configurations of RegCM4.3 over the SA domain for use in the Coordinated Regional Downscaling Experiment (CORDEX) project. We analyzed 7 simulations for the period 1990−2000. The control simulation used the Biosphere−Atmosphere Transfer Scheme (BATS), Holtslag for the PBL and Mixed1 for cumulus convection. In the other simulations we changed these schemes using the new RegCM4.3 options. The evaluation of the simulations was carried out in 3 groups: (1) sensitivity to convection (Mixed1, MIT and Tiedtke), (2) sensitivity to the PBL (Holtslag and UW-PBL) and (3) sensitivity to surface processes (BATS and CLM). Considering all of SA, the results show that precipitation is better simulated with the schemes of the control simulation, while for air temperature, better results were obtained using the MIT cumulus scheme together with the CLM scheme. In summary, we recommend 2 configurations for the CORDEX project over SA: (1) the schemes used in the control simulation and (2) the MIT scheme for cumulus convection, Holtslag for the PBL, and CLM for surface interaction processes.KEY WORDS: South America · RegCM4.3 · CORDEX · Simulation · Precipitation · Temperature · Evapotranspiration Resale or republication not permitted without written consent of the publisherClim Res 60: [215][216][217][218][219][220][221][222][223][224][225][226][227][228][229][230][231][232][233][234] 2014 lysis (e.g. NCEP, ERA-Interim) to be used as initial and boundary conditions in RCMs, for a range of applications. In particular, for South America (SA), RCMs began to be utilized in the 2000s to simulate the observed features of the present climate (Chou et al. 2000, Menéndez et al. 2001, Nobre et al. 2001. The use of RCMs increased in recent years, encompassing objectives such as: investigation of the RCMs' ability to simulate the climate (Nicolini et al. 2002, Seth & Rojas 2003, Fernandez et al. 2006a; the use of different initial and boundary condition forcing (Seth & Rojas 2003); validation of the simulated diurnal cycle of the precipitation (da Rocha et al. 2009); comparison of the simulated interannual variability of the climate with observations (Misra et al. 2002, Fernandez et al. 2006b); investigation of the ability of RCMs to simulate specific atmospheric systems climatology (Reboita et al. 2010a); and exploration of future climate scenarios (Nuñez et al. 2009, Maren...

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“…Giorgi and Shields 1999;Gochis et al 2002;Liang et al 2006Liang et al , 2007Ratna et al 2014), the planetary boundary layer parameterization scheme (e.g. Flaounas et al 2011;Güttler et al 2014;Wang et al 2014), and land surface parameterization scheme (e.g. Music and Caya 2009;Gianotti et al 2012;Sato and Xue 2013) exert significant influences on the dynamic downscaling capability of RCMs.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of a regional climate model to land surface parameterization schemes for East Asian summer monsoon simulation

Guo

Xue

et al. 2015

Clim Dyn

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Sensitivity of the regional climate model RegCM4.2 to planetary boundary layer parameterisation

Cited by 29 publications

References 63 publications

Evaluation of the Sensitivity of the Updated RegCM4 Model to Physics Parameterizations over the Mediterranean Region: Precipitation and Temperature Simulations

Evaluation of the Sensitivity of the Updated RegCM4 Model to Physics Parameterizations over the Mediterranean Region: Precipitation and Temperature Simulations

Assessment of RegCM4.3 over the CORDEX South America domain: sensitivity analysis for physical parameterization schemes

Sensitivity of a regional climate model to land surface parameterization schemes for East Asian summer monsoon simulation

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