Article
Meteorology & Atmospheric Sciences
Cenlin He, Fei Chen, Ronnie Abolafia-Rosenzweig, Kyoko Ikeda, Changhai Liu, Roy Rasmussen
Summary: The study conducted process-level snowpack analyses of a widely used convection-permitting weather research and forecasting modeling product for the contiguous U.S., revealing mechanisms causing unobserved early-spring snow ablation over Utah mountains. The analyses showed that the unobserved snowpack ablation in the model was driven by multiple strong melting events during mid-February to late-March, with contributions from enhanced downward sensible heat flux and ground solar radiation absorption.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Article
Meteorology & Atmospheric Sciences
Antonio Giordani, Ines Maria Luisa Cerenzia, Tiziana Paccagnella, Silvana Di Sabatino
Summary: Regional reanalyses with higher resolution provide more detailed weather patterns for rapidly evolving high-impact events compared to global datasets. The SPHERA project, a high-resolution convection-permitting reanalysis centered over Italy, improves the explicit representation of deep convection. Using rain-gauge observations during 2003-2017 as reference, this study highlights the added value of SPHERA over ERA5 in representing rainfall over Italy, especially for severe precipitation.
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
(2023)
Article
Meteorology & Atmospheric Sciences
Kirsty E. Hanley, Jennifer S. R. Pirret, Caroline L. Bain, Andrew J. Hartley, Humphrey W. Lean, Stuart Webster, Beth J. Woodhams
Summary: This article evaluates the prediction of convective storms in two convection-permitting versions of the Met Office Unified Model over the Lake Victoria basin region in East Africa. The tropical configuration compares better with satellite-derived rainfall observations, but both configurations generally produce too much rain, too many small storms, and a lack of light rain.
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
(2021)
Article
Meteorology & Atmospheric Sciences
Philippe Lucas-Picher, E. Brisson, C. Caillaud, A. Alias, P. Nabat, A. Lemonsu, N. Poncet, V. E. Cortes Hernandez, Y. Michau, A. Doury, D. Monteiro, S. Somot
Summary: Convection-permitting regional climate models (CPRCMs) have shown promising results in simulating precipitation extremes. This article describes and evaluates the CPRCM CNRM-AROME developed at the Centre National de Recherches Meteorologiques (CNRM) using a 2.5-km hindcast simulation over northwestern Europe. Comparisons with its driving model, CNRM-ALADIN, and various observations reveal little improvement in long-term means and mean annual cycles of precipitation and near-surface temperature, but a more realistic behavior in the summer diurnal cycle and extreme precipitation. The evaluation also highlights the improved simulation of snow cover and the analysis of incoming shortwave radiation and cloud cover using satellite estimates. Overall, CNRM-AROME proves to be a superior CPRCM compared to CNRM-ALADIN.
Article
Meteorology & Atmospheric Sciences
Robert Kvak, Luboslav Okon, Vojtech Bliznak, Ladislav Meri, Marek Kaspar
Summary: An investigation into supercell storms in the Western Carpathians found that mountainous terrain has some influence on their behavior, but the impact on precipitation intensity is not significant.
ATMOSPHERIC RESEARCH
(2023)
Article
Meteorology & Atmospheric Sciences
Sebastian K. Mueller, Cecile Caillaud, Steven Chan, Hylke de Vries, Sophie Bastin, Segolene Berthou, Erwan Brisson, Marie-Estelle Demory, Hendrik Feldmann, Klaus Goergen, Stergios Kartsios, Petter Lind, Klaus Keuler, Emanuela Pichelli, Mario Raffa, Merja H. Toelle, Kirsten Warrach-Sagi
Summary: In this study, four different tracking algorithms were compared and evaluated, and it was found that they produced similar results in terms of tracking characteristics, indicating their reliability as atmospheric research analysis tools. The models also showed encouraging performance in comparison to radar-based observations, although there were biases in certain properties.
Article
Geosciences, Multidisciplinary
Zhe Feng, L. Ruby Leung, Joseph Hardin, Christopher R. Terai, Fengfei Song, Peter Caldwell
Summary: This study examines the simulated deep convection populations and mesoscale convective systems (MCSs) of the DYAMOND winter project. Storm tracking algorithm and satellite data are used for comparison. The simulated frequencies of tropical deep convection and organized convective systems vary among models and regions, but robust MCSs are generally underestimated. The study discusses possible causes for the model differences and implications for future model developments.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
Filippo Giorgi, Erika Coppola, Graziano Giuliani, James M. Ciarlo, Emanuela Pichelli, Rita Nogherotto, Francesca Raffaele, Piero Malguzzi, Silvio Davolio, Paolo Stocchi, Oxana Drofa
Summary: Introduces the latest version of the RegCM regional climate modeling system, RegCM5, which includes a more accurate and computationally stable non-hydrostatic dynamical core. Several physics schemes and coupled model components have also been upgraded. Test simulations show that RegCM5 performs better than RegCM4 in terms of statistics, especially at convection-permitting resolutions. It is a freely available, computationally efficient, flexible, and portable Regional Earth System model designed for community use.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Geosciences, Multidisciplinary
Yuting Chen, Athanasios Paschalis, Elizabeth Kendon, Dongkyun Kim, Christian Onof
Summary: This study examined the potential future changes in subdaily rainfall extremes and found that in addition to the intensification of heavy rainfall events, the spatial extent of these events is also likely to increase, exacerbating intensity increases in extremes at various spatial scales.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
Mengnan Ma, Pinhong Hui, Dongqing Liu, Peifeng Zhou, Jianping Tang
Summary: Two regional climate simulation experiments using the WRF model were conducted over the Tibetan Plateau, showing both experiments were able to simulate the spatial distribution and daily variation of T2m and precipitation, with some biases in temperature and precipitation.
Article
Meteorology & Atmospheric Sciences
Qian Lin, Jie Chen, Tinghai Ou, Hui-Wen Lai, Andreas F. F. Prein, Deliang Chen
Summary: This study simulated precipitation, air temperature, snowfall, and lake-effect snow over the Tibetan Plateau using the WRF model and compared different physical parameterization schemes. The results showed that all schemes performed well in simulating precipitation and air temperature, but were less accurate in simulating lake-effect snow. Further improvements are needed for future modeling of lake-effect snow or other snow events.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Meteorology & Atmospheric Sciences
Ziyue Guo, Jianping Tang, Jie Tang, Shuguang Wang, Yubin Yang, Wei Luo, Juan Fang
Summary: Based on an object-based tracking algorithm, the precipitation systems in a high-resolution regional climate model were evaluated. The model can reasonably capture the average duration and eccentricity of precipitation systems, but it tends to underestimate/overestimate their propagation speed and has a weakness in simulating precipitation intensity and coverage.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Meteorology & Atmospheric Sciences
Mengnan Ma, Tinghai Ou, Dongqing Liu, Shuyu Wang, Juan Fang, Jianping Tang
Summary: The study evaluates the simulation of climate characteristics over the Tibetan Plateau using WRF model experiments. The results show that the experiments can effectively capture the spatial and temporal variation of surface temperature and precipitation. Compared with global reanalysis data, the experiments reduce the biases in temperature and precipitation, especially in the convection-permitting experiment. However, the improvement in precipitation simulation seems limited in the convection-permitting experiment.
Article
Meteorology & Atmospheric Sciences
Kyoko Ikeda, Roy Rasmussen, Changhai Liu, Andrew Newman, Fei Chen, Mike Barlage, Ethan Gutmann, Jimy Dudhia, Aiguo Dai, Charles Luce, Keith Musselman
Summary: This study examines current and future western U.S. snowfall and snowpack through climate simulations. The research shows significant impacts of climate change on the water cycle in the western U.S., especially in coastal mountain ranges. The study indicates that snowpack in the Pacific Northwest is predicted to decrease by around 70% by 2100, with most snowpack potentially gone before that time.
Article
Meteorology & Atmospheric Sciences
Hassan Beydoun, Peter M. Caldwell, Elizabeth V. Stein, Sonia Wharton
Summary: This study develops a tracing method to track the sources and sinks of raindrop mass and number in numerical simulations. It reveals that convective precipitation is dominated by warm rain processes, while stratiform precipitation is dominated by the melting of ice crystals.
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
(2023)