Atmospheric Radiation Measurement Climate Research Facility US Department of Energy

Midlatitude Continental Convective Clouds Experiment (MC3E)

22 April 2011 - 6 June 2011

Lead Scientist: Michael Jensen

Observatory: sgp, sgp

Convective processes play a critical role in the Earth's energy balance through the redistribution of heat and moisture in the atmosphere and their link to the hydrological cycle. Accurate representation of convective processes in numerical models is vital towards improving current and future simulations of Earth’s climate system. Despite improvements in computing power, current operational weather and global climate models are unable to resolve the natural temporal and spatial scales important to convective processes and therefore must turn to parameterization schemes to represent these processes. In turn, parameterization schemes in cloud-resolving models need to be evaluated for their generality and application to a variety of atmospheric conditions. Data from field campaigns with appropriate forcing descriptors have been traditionally used by modelers for evaluating and improving parameterization schemes. To this end, the Midlatitude Continental Convective Cloud Experiment (MC3E), a joint field program involving NASA Global Precipitation Measurement Program and ARM investigators, was conducted in south-central Oklahoma during the April to May 2011 period. The experiment leveraged from the unprecedented observing infrastructure available in the central United States, combined with an extensive sounding array. Our goal was to provide the most complete characterization of convective cloud systems and their environment that had ever been obtained, providing constraints for model cumulus parameterizations that had never before been available. Several different components of convective processes tangible to the convective parameterization problem were targeted, such as pre-convective environment and convective initiation, updraft/downdraft dynamics, condensate transport and detrainment, precipitation and cloud microphysics, influence on the environment and radiation, and a detailed description of the large-scale forcing. This intensive observation period used a new multi-scale observing strategy with the participation of a network of distributed sensors (both passive and active). The approach was to document in 3D not only precipitation, but also clouds, winds, and moisture in an attempt to provide a holistic view of convective clouds and their feedback with the environment. A goal was to measure cloud and precipitation transitions and environmental quantities that are important for convective parameterization in large-scale models and cloud-resolving model simulations. With unprecedented observing capabilities comes a greater responsibility to develop synthesis data products suitable for model studies and evaluation. Thus, special emphasis was given to the development of a systematic dialogue with the ASR modeling group for the development of such 3D data products.

This experiment seeks to use a multi-scale, multi-frequency, multi-platform observational strategy to provide unprecedented detail in characterizing convection and its environment, providing constraints for model cumulus parameterizations and spaceborne measurements of precipitation over land that have never before been available. The key goals are to:

  1. Advance the understanding of the different components of convective simulation and microphysical parameterization
  2. Improve the fidelity of rainfall estimates over land

Co-Investigators

Anthony Del Genio
Scott Giangrande
Pavlos Kollias

Timeline

  • Child Campaign

2021

Duffy G, G McFarquhar, S Nesbitt, and R Bennartz. 2021. "Demonstration of a Consistent Relationship Between Dual-Frequency Reflectivity and the Mass-Weighted Mean Diameter in Measurements of Frozen Precipitation from GCPEX, OLYMPEX, and MC3E." Journal of the Atmospheric Sciences, 78(8), 10.1175/JAS-D-20-0174.1.

Wang J and M Zhang. 2021. "A Constrained Data Assimilation Algorithm Based on GSI Hybrid 3D-EnVar and Its Application." Monthly Weather Review, 149(10), 10.1175/MWR-D-21-0052.1.

Heymsfield A, A Bansemer, A Theis, and C Schmitt. 2021. "Survival of Snow in the Melting Layer: Relative Humidity Influence." Journal of the Atmospheric Sciences, 78(6), 10.1175/JAS-D-20-0353.1.

Van Weverberg K, C Morcrette, I Boutle, K Furtado, and P Field. 2021. "A Bimodal Diagnostic Cloud Fraction Parameterization. Part I: Motivating Analysis and Scheme Description." Monthly Weather Review, 149(3), 10.1175/MWR-D-20-0224.1.
Research Highlight

Van Weverberg K, C Morcrette, and I Boutle. 2021. "A Bimodal Diagnostic Cloud Fraction Parameterization. Part II: Evaluation and Resolution Sensitivity." Monthly Weather Review, 149(3), 10.1175/MWR-D-20-0230.1.
Research Highlight

2020

Sulia K, Z Lebo, V Przybylo, and C Schmitt. 2020. "A New Method for Ice-Ice Aggregation in the Adaptive Habit Model." Journal of the Atmospheric Sciences, 78(1), 10.1175/JAS-D-20-0020.1.

Logan T, X Dong, B Xi, X Zheng, Y Wang, P Wu, E Marlow, and J Maddux. 2020. "Quantifying long‐term seasonal and regional impacts of North American fire activity on continental boundary layer aerosols and cloud condensation nuclei." Earth and Space Science, 7(1 2), e2020EA001113, 10.1029/2020EA001113.

Stanford M, H Morrison, and A Varble. 2020. "Impacts of Stochastic Mixing in Idealized Convection-Permitting Simulations of Squall Lines." Monthly Weather Review, 148(12), 10.1175/MWR-D-20-0135.1.

Murphy A, A Ryzhkov, and P Zhang. 2020. "Columnar Vertical Profile (CVP) Methodology for Validating Polarimetric Radar Retrievals in Ice Using In Situ Aircraft Measurements." Journal of Atmospheric and Oceanic Technology, 37(9), 10.1175/JTECH-D-20-0011.1.

Chase R, S Nesbitt, and G McFarquhar. 2020. "Evaluation of the Microphysical Assumptions within GPM-DPR Using Ground-Based Observations of Rain and Snow." Atmosphere, 11(6), 10.3390/atmos11060619.


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Campaign Data Sets

IOP Participant Data Source Name Final Data
Mary Jane Bartholomew Video Disdrometer Order Data
Jennifer Comstock High Volume Precip Spectrometer Order Data
Jennifer Comstock High Volume Precip Spectrometer Order Data
Xiquan Dong Cloud Aerosol Precip Spectrometer(CAPS)/Cloud Imaging Probe (CIP) Order Data
Xiquan Dong S-band radar (NEXRAD) Order Data
Michael Jensen Convective Available Potential Energy (CAPE) Order Data
Michael Jensen Microwave Radiometer Order Data
Michael Jensen Radiosonde Data Order Data
Mathew Schwaller GPM Ground Validation Autonomous Parsivel Unit (APU) MC3E Order Data
Mathew Schwaller GPM Ground Validation Two-Dimensional Video Disdrometer (2DVD) MC3E Order Data
Jason Tomlinson Ultra High Sensitivity Aerosol Spectrometer- G1 Aircraft Order Data
Jason Tomlinson Ultra High Sensitivity Aerosol Spectrometer- G1 Aircraft Order Data
David Turner AERI Retrieved Thermodynamic Profiles and Cloud Properties Order Data
Christopher Williams 449 MHz Profiler Order Data
Christopher Williams S-band Radar Order Data
Christopher Williams Surface Meteorology- T0 Site Order Data
Christopher Williams Vertical Air Motion Order Data
Christopher Williams disdro Order Data
Shaocheng Xie Single Column Model Forcing Order Data