Simulating the impact of the large-scale circulation on the 2-m temperature and precipitation climatology

Bowden, Jared H.; Nolte, Christopher G.; Otte, Tanya L.

doi:10.1007/s00382-012-1440-y

Cited by 67 publications

(82 citation statements)

References 41 publications

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“…However, satisfactory regional climate simulation skills have not yet been achieved over this region, especially for summer rainfall (e.g., Lo et al 2008;Mearns et al 2012;Bowden et al 2013). Some previous studies have emphasized the influences of lateral boundary conditions on SE US rainfall simulation (Castro et al 2005;Xue et al 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies have shown that the application of interior grid nudging (e.g. Lo et al 2008;Bowden et al 2013), adjustment of parameters in cumulus schemes (e.g. Yang et al 2012), and the consideration of ''cumulus cloud-radiation'' feedback in WRF (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…However, the SE US is a region where satisfactory RCM simulation skill has not yet been achieved (e.g., Lo et al 2008;Walker and Diffenbaugh 2009;Mearns et al 2012;Bowden et al 2013). Previous studies have found that the RCMs participating in the North American Regional Climate Change Assessment Program (NARCCAP) show bias in warm-season precipitation over the SE US.…”

Section: Introductionmentioning

confidence: 99%

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Improvements in WRF simulation skills of southeastern United States summer rainfall: physical parameterization and horizontal resolution

Jin

2014

Clim Dyn

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Realistic regional climate simulations are important in understanding the mechanisms of summer rainfall in the southeastern United States (SE US) and in making seasonal predictions. In this study, skills of SE US summer rainfall simulation at a 15-km resolution are evaluated using the weather research and forecasting (WRF) model driven by climate forecast system reanalysis data. Influences of parameterization schemes and model resolution on the rainfall are investigated. It is shown that the WRF simulations for SE US summer rainfall are most sensitive to cumulus schemes, moderately sensitive to planetary boundary layer schemes, and less sensitive to microphysics schemes. Among five WRF cumulus schemes analyzed in this study, the Zhang-McFarlane scheme outperforms the other four. Further analysis suggests that the superior performance of the Zhang-McFarlane scheme is attributable primarily to its capability of representing rainfall-triggering processes over the SE US, especially the positive relationship between convective available potential energy and rainfall. In addition, simulated rainfall using the Zhang-McFarlane scheme at the 15-km resolution is compared with that at a 3-km convection-permitting resolution without cumulus scheme to test whether the increased horizontal resolution can further improve the SE US rainfall simulation. Results indicate that the simulations at the 3-km resolution do not show obvious advantages over those at the 15-km resolution with the Zhang-McFarlane scheme. In conclusion, our study suggests that in order to obtain a satisfactory simulation of SE US summer rainfall, choosing a cumulus scheme that can realistically represent the convective rainfall triggering mechanism may be more effective than solely increasing model resolution.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Improvements in WRF simulation skills of southeastern United States summer rainfall: physical parameterization and horizontal resolution

Jin

2014

Clim Dyn

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“…FDDA for each variable can be applied throughout all vertical layers, or only above a particular layer number. In many previous applications of WRF, it was common for FDDA to only be applied above the PBL so as not to disrupt the diurnal evolution of the PBL with data from a linear time interpolation 10 Bowden et al, 2012;Bowden et al, 2013;Bullock et al, 2014). Table 3 shows namelist options provided to avoid nudging in the PBL, avoid nudging below a specified layer number, or both.…”

Section: Fdda Test Applicationsmentioning

confidence: 99%

Adding Four Dimensional Data Assimilation by Analysis Nudging to the Model for Prediction Across Scales – Atmosphere (Version 4.0)

Bullock¹,

Foroutan²,

Gilliam³

et al. 2017

Preprint

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“…NARR has been used as a comparison data set in several RCM evaluation studies (Bowden et al 2013;Bukovsky and Karoly 2009). Thus, while it is reasonable to use NARR for comparison of precipitation, we nevertheless expect larger differences than for temperature, due to the uncertainty associated with the data set, the more heterogeneous nature of rainfall and the weaker observational constraint outside of the continental United States.…”

Section: Models and Data Setsmentioning

confidence: 99%

Evaluation of extreme rainfall and temperature over North America in CanRCM4 and CRCM5

Whan

Zwiers

2015

Clim Dyn

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Simulating the impact of the large-scale circulation on the 2-m temperature and precipitation climatology

Cited by 67 publications

References 41 publications

Improvements in WRF simulation skills of southeastern United States summer rainfall: physical parameterization and horizontal resolution

Improvements in WRF simulation skills of southeastern United States summer rainfall: physical parameterization and horizontal resolution

Adding Four Dimensional Data Assimilation by Analysis Nudging to the Model for Prediction Across Scales – Atmosphere (Version 4.0)

Evaluation of extreme rainfall and temperature over North America in CanRCM4 and CRCM5

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