Description of the LASSO-ENA Activity: A LASSO Scenario for Marine Cellular Convection

NOTE: This is an evolving version of the LASSO-ENA documentation. It is subject to change.

This documentation is for the U.S. Department of Energy Atmospheric Radiation Measurement (ARM) User Facility’s Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO) product focusing on the Eastern North Atlantic atmospheric observatory (ENA). This product is formally dubbed LASSO-ENA. The ENA observatory is located on Graciosa Island in the Azores archipelago in the northeastern Atlantic Ocean. The LASSO-ENA product simulates a range of marine, mostly shallow, cellular convection using large-eddy simulations with 100-m grid spacing to help scientists better understand the processes leading to these clouds. Ultimately, the goal is to better understand the cloud processes so that weather and earth system models can be improved to better represent these conditions.

Primary developers:

William I. Gustafson Jr., Principal Investigator (PI), Pacific Northwest National Laboratory (PNNL)

Scott E. Giangrande, Co-PI, Brookhaven National Laboratory (BNL)

Satoshi Endo, BNL

John Rausch, BNL

Heng Xiao, PNNL

Damao Zhang, PNNL

Document Version: Pre-release

DOE Report ID: ~~~TBD~~~

Documentation Website: https://lasso-ena-doc.arm.gov

Documentation DOI: 10.5439/2572640 (website version)

Overall LASSO-ENA Data Set DOI: 10.5439/2572639

LASSO-ENA Bundle Browser: https://lasso-ena.arm.gov

This work is supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research.

Disclaimer:

This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the U.S. Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the U.S. Government or any agency thereof.

Contents

• Background
  • LASSO-ENA Scenario Overview
  • ENA Atmospheric Observatory
• Citing and Acknowledging LASSO Usage
  • Inclusion of LASSO Developers as Co-Authors
• User Support
• Case Selection
  • Closed Cellular Stratocumulus Events
  • Open Cellular Stratocumulus Events
  • Transitional Stratocumulus Events
• Modeling Methodology
  • SAM Model
  • Domain Configuration
  • Input Data
• Simulation Ensembles
  • Available Configurations
  • List of Simulations
• Observations and Skill Scores
  • Cloud Fraction
  • Liquid Water Path
• File Descriptions of Model Data
  • Filename Convention
  • File Types
• Bundle Browser
• Software for LASSO-ENA
• ARM’s Computing Environment
  • Requesting an ARM Computing Account
  • ARM’s JupyterHub Server
  • Direct Logins to Cumulus
• Feedback to LASSO Team
• Acknowledgements
• Appendix: Acronyms and Abbreviations
• Appendix: Release History
• References