Workshops and Meetings

Past Events

ARTMIP Tier2-Reanalysis/Paleo Telecon

Date: 12 March 2021


  • 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


  • 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

ARTMIP Tier2-Reanalysis Telecon

Date: 27 March 2020


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


  • 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

3rd ARTMIP Workshop

Date: 16-18 October 2019, Berkeley, CA


  • 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


  • 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

ARTMIP Tier 2 CMIP5/C20C+ Telecon

Date: 7 June 2019


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


  • 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

ARTMIP Initial Results C20C+ Telecon

Date: 4 March 2019


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


  • 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)

2nd ARTMIP Workshop

Date: April 23-24, 2018

Location: Gaithersburg, Maryland


  • Discuss Tier 1 catalogues in context of science questions defined in 1st 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



  • 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

ARTMIP One-Month Trial Run Telecon

Date: 22 September 2017


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


  • 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

1st ARTMIP Workshop

Date: 10 - 11 May 2017

Location: Scripps Institute of Oceanography


  • 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


  • 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