edu.ucar.opensky::articles:42162 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T18:07:17.425944 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.net/ark:/85065/d7g73k1h https://doi.org/10.5281/zenodo.10521291 https Related Dataset #1 Evaluation of Mesoscale Convective Systems in High Resolution E3SMv2 Mesoscale convective systems represented in high resolution E3SMv2 and impact of new cloud and convection parameterizations 2024-09-01T00:00:00Z publication https://n2t.net/ark:/85065/d7g73k1h https://doi.org/10.1029/2024JD040828 Zhang, M. author Xie, S. author Feng, Z. author Terai, C. R. author Lin, W. author Tao, C. author Chen, Chih-Chieh author Fan, J. author Golaz, J. author Leung, L. R. author Richter, Jadwiga H. author Shan, Y. author Song, X. author Tang, Q. author Zhang, G. J. author UCAR/NCAR - Library publisher In this study, we evaluate mesoscale convective system (MCS) simulations in the second version of U.S. Department of Energy (DOE) Energy Exascale Earth System Model (E3SMv2). E3SMv2 atmosphere model (EAMv2) is run at the uniform 0.25&#176; horizontal resolution. We track MCSs consistently in the model and observations using PyFLEXTRKR algorithm, which defines MCSs based on both cloud top brightness temperature ( T b ) and surface precipitation. Results from using only T b to define MCSs are also discussed to understand the impact of different MCS tracking algorithms on MCS evaluation and provide additional insights into model errors in simulating MCSs. Our results show that EAMv2 simulated MCS precipitation is largely underestimated in tropical and extratropical regions. This is mainly attributed to the underestimated MCS genesis and underestimated precipitation intensity in EAMv2. Comparing the two MCS tracking methods, simulated MCS precipitation is increased if MCSs are defined with only cloud top T b . The T b &#8208;based MCS tracking method, however, includes cloud systems with very weak precipitation. This illustrates the model issues in simulating heavy precipitation even though the convective cloud shield is overall well simulated from the moist convective processes. Furthermore, sensitivity experiments are performed to examine the impact of new cloud and convection parameterizations developed for EAMv3 on simulated MCSs. The new physics parameterizations help increase the relative contribution of convective precipitation to total precipitation in the tropics, but the simulated MCS properties are not significantly improved. This suggests that simulating MCSs still remain a challenge for the next version of E3SM. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication <style type="text/css"></style><style type="text/css"></style><span style="font-family:Arial;font-size:10pt;font-style:normal;" data-sheets-root="1">Copyright 2024 American Geophysical Union.</span> None eng geoscientificInformation