ARTMIP Workshops and Meetings

Goals

• Present and discuss Renalayis comparison results
• Updates to other T2 subtopics, C20C+ and CMIP5/6
• T2 Paleo subtopic introduciton, experimental design, and timeline
• Discuss ARTMIP future directions and outstanding science questions

Outcomes

• T2 Reanaysis results discussed including new analaysis suggestions
• Paleo simulations (using CESM) include Holocene (10ka) orbital, LGM (21ka) ice sheet, and respective controls
• Catalogues will be run on ~30 year timeslices at the end of the simulations
• Catalogue collection ~ Winter (boreal) 2021/2022
• Discussed inclduing volunteer ARTMIP ARDTs into common framework

Goals

• Motivation for need of Reanalysis senstivity subtopic
• Discussion and choice of reanalysis to include in subtopic
• Develop experimental design and timeline

Outcomes

• Experimental design developed and reanalyses identified
• Required datasets: MERRA-2 1hourly Native, ERA-5 1hourly native
• Optional datasets: JRA55, JRA-55c, CERA-20, ERA20C
• Required datasets due August 2020 and Optional due the Fall 2020

Goals

• Presentations of results from ongoing ARTMIP research
• Working discussion of current and future ARTMIP experiments
• Solicitation of expert identification of ARs and other weather phenomena for machine learning

Workshop Webpage

• Schedule and Workshop Information

Outcomes

• Produced a workshop report and summary paper
• Developed analysis plan for CMIP5/6 papers
• Completion of successful AR tagging campaign to be published under ClimateNet project

Goals

• Facilite applying algorithms to CMIP5 data
• Develop analyis plan
• Develop publication plan

Outcomes

• General updates, Tier 1 Paper, new algorithms, etc.
• Ashley Payne and Travis O'Brien announced as new committee members
• Discussed status of C20C+ analysis, missing data, available catalogues, analysis goals and potential Figures for C20C+ overview paper
• Discussed 3rd Workshop plans
• Discussed Tier2 CMIP5 data, design, timeline, and analysis plan
• Solicited voluteers for CMIP5 analysis

Goals

• Discuss scope of Tier 2 - C20C+ paper
• Present initial analysis and next steps
• Update on Tier 2 - CMIP5/6

Outcomes

• Update on Tier 1 Overview Paper (Rutz)
• Update on catalogue availability, quality control, and data access (Payne)
• Presentations and Discussion: AR life cycle (Zhou), initial C20C+ analysis (Shields)
• Scope of C20C+ paper and Discussion (Payne)
• Update on Tier 2 - CMIP5/6, 3rd ARTMIP workshop (O'Brien)

Goals

• Discuss Tier 1 catalogues in context of science questions defined in 1^st workshop
• Discuss Tier 1 analysis for science overview paper
• Discuss metrics and begin to formulate guidance on algorithmic choices based on Tier 1 results
• Adjust metrics, if necessary
• Discuss and organize Tier 2 catalogue details
  • Climate change comparisons
  • For re-analysis sensitivity comparisons
  • CMIP5 data comparisons

Agenda

• Final Agenda

Outcomes

• Discussed Tier 1 analysis and overview paper with next steps
• Organized Tier 2 subtopic details and created timelines
• High resolution climate change comparisons
• CMIP5 data comparisons
• Reanalysis sensitivity comparisons, including link to instrumental observations
• Discussed emerging needs and gaps in AR science
• Executive Summary

Goals

• Review 1-month proof of concept catalogues
• Adjust experimental design, if necessary
• Adjust metrics, if necessary
• Discuss contributions for experimental design paper

Outcomes

• 15 groups participated in 1-month trial, along with two “Human” controls, i.e. 2 participants counted ARs “by eye” for both Western U.S. and Europe
• Discussed spread in intensity, frequency, and duration in catalogues
• Discussed refinement of metrics for both climatologies and case studies
• Set final requirements and dates for full catalogues, and contributions for experimental design paper

Goals

• To create ARTMIP framework
• Choose common data set for initial catalogues
• Gain community input on key science questions
• Gain community input on AR metrics for ARTMIP

Outcomes

• Tier structure established
• Chose MERRA-2 1980-2017 for Tier 1 catalogues
• Designed a 1-month “proof of concept” trial run to work out bugs with Tier 1 design. February 2017 was chosen due to high AR frequency in PNW during this time period
• Chose CAM5 25km LLBL climate change runs for Tier 2 climate catalogues
• Key science questions are related to:
  • Uncertainty regarding AR climatology
  • The relationship between ARs and precipitation
  • How these may be altered under future climate change scenarios
• Fundamental metrics include AR frequency, duration, intensity, and the climatology of these quantities
• Co-chairs will lead two papers:
  • Outlining experimental design
  • Scientific results from Tier 1