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Title: Investigating Mechanisms Driving Differences in the Characteristics of Precipitation in the E3SM Multiscale Modeling Framework With 2D Versus 3D Cloud Resolving Model Configurations

Journal Article · · Journal of Advances in Modeling Earth Systems
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]
  1. Department of Geography University of Georgia Athens GA USA
  2. Lawrence Livermore National Laboratory Livermore CA USA
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Abstract In this study, we compare the Energy Exascale Earth Systems Model (E3SM) multiscale modeling framework (MMF) with the cloud resolving model (CRM) configured in two (2dMMF) and three (3dMMF) dimensions. We explore how CRM dimensionality impacts the representation of mean and extreme precipitation characteristics. Our results show that tropical mean precipitation patterns are better represented in 3dMMF compared to observations (Integrated Multi‐satellitE Retrivals for GPM and Global Precipitation Climatology Project One Degree Daily products), while 2dMMF better captures extreme precipitation intensity, with systematic land‐ocean differences in precipitation and cloud‐associated variables. These differences are attributed to the co‐occurrence of CRM throttling (i.e., suppressed convection in due to smaller numbers of CRM columns and domain size) and dilution (i.e., 3‐D cloud circulations with increased entrainment and lower precipitation efficiency) effects. Overall, throttling results in more low‐level humidity in 2dMMF and dilution contributes to more high clouds with less precipitation efficiency in 3dMMF. Since throttling occurs more strongly over the ocean than land, the 3dMMF tends to have less cloud liquid and precipitation over the ocean and more cloud ice and precipitation over land. These results may serve as a guide for choosing the CRM structure to reduce precipitation and cloud‐related biases.

Sponsoring Organization:
USDOE
OSTI ID:
2483913
Journal Information:
Journal of Advances in Modeling Earth Systems, Journal Name: Journal of Advances in Modeling Earth Systems Journal Issue: 1 Vol. 17; ISSN 1942-2466
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

References (23)

Restricting 32-128 km horizontal scales hardly affects the MJO in the Superparameterized Community Atmosphere Model v.3.0 but the number of cloud-resolving grid columns constrains vertical mixing journal August 2014
A strategy for representing the effects of convective momentum transport in multiscale models: Evaluation using a new superparameterized version of the Weather Research and Forecast model (SP-WRF): CMT IN SP-WRF journal June 2015
The effect of large-scale model time step and multiscale coupling frequency on cloud climatology, vertical structure, and rainfall extremes in a superparameterized GCM: EFFECT OF GLOBAL MODEL TIMESTEP IN SPCAM journal December 2015
Robust effects of cloud superparameterization on simulated daily rainfall intensity statistics across multiple versions of the C ommunity E arth S ystem M odel journal February 2016
Radiative–convective equilibrium in a three-dimensional cloud-ensemble model journal July 1998
Seasonal migration of ITCZ precipitation across the equator: Why can't GCMs simulate it?: SEASONAL MIGRATION OF ITCZ PRECIPITATION journal August 2003
The DOE E3SM Coupled Model Version 1: Overview and Evaluation at Standard Resolution journal July 2019
Initial Results From the Super‐Parameterized E3SM journal January 2020
Understanding the Response of Tropical Ascent to Warming Using an Energy Balance Framework journal June 2020
Linking Total Precipitable Water to Precipitation Extremes Globally journal February 2022
Assessing Two Approaches for Enhancing the Range of Simulated Scales in the E3SMv1 and the Impact on the Character of Hourly US Precipitation journal February 2022
Factors Affecting Entrainment Rate in Deep Convective Clouds and Parameterizations journal August 2021
Mesoscale Convective Systems in a Superparameterized E3SM Simulation at High Resolution journal December 2021
On the Resolution‐Dependence of Anvil Cloud Fraction and Precipitation Efficiency in Radiative‐Convective Equilibrium journal February 2022
Evaluating the Simulation of CONUS Precipitation by Storm Type in E3SM journal June 2023
Convective Momentum Transport and Its Impact on the Madden‐Julian Oscillation in E3SM‐MMF journal November 2022
Understanding Precipitation Bias Sensitivities in E3SM‐Multi‐Scale Modeling Framework From a Dilution Framework journal March 2023
Revisiting the Land‐Ocean Contrasts in Deep Convective Cloud Intensity Using Global Satellite Observations journal March 2023
Evaluating Mesoscale Convective Systems Over the US in Conventional and Multiscale Modeling Framework Configurations of E3SMv1 journal December 2023
Structure of the Madden–Julian Oscillation in the Superparameterized CAM journal November 2009
Simulations of the Atmospheric General Circulation Using a Cloud-Resolving Model as a Superparameterization of Physical Processes journal July 2005
CAM-SE: A scalable spectral element dynamical core for the Community Atmosphere Model journal November 2011
Unprecedented cloud resolution in a GPU-enabled full-physics atmospheric climate simulation on OLCF’s summit supercomputer journal July 2021

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