Meeting Notes 2025 Science

2025 CTSM science meeting notes

March 27

Updates and Announcements (5 minutes)

• Welcome:

• Wins:

  • CRUJRA datm option (tag CTSM5.3.032)

• Announcement:

  • June ESPAT Workshop is open, focusing on land-atmosphere interactions and their role on S2S predictability. Please join if interested
  • Land Diagnostics Codefest (Thurs April 10, 1:00-4:30 Mountain?)
    • Introduce, familiarize, improve the Land Diagnostics Framework.
    • Please reply to the calendar invite if you're interested in contributing.

Data nugget (15 minutes)

• Sam Rabin shares update on crop model parameterization.

CESM Potpourri

Discussion about land related issues, biases, features in CESM development

• Slides here

March 13

Updates and Announcements (5 minutes)

• Welcome:

• Wins:

  • CRUJRA default datm for CLM6 physics options (tag CTSM5.3.031)
  • S2S soil moisture forecast paper published by Duan, Kumar, Maruf, Kavoo et al.
  • Fertilization effects on emission driven CESM2 simulations published by Lombardozzi, et al.

• Announcements:

Data Nugget & Discussion (30 minutes+)

• Sean illustrates new flexibility in handling PFT definitions

March 6

Updates and Announcements (5 minutes)

• Welcome:

• Wins:

• Announcements:

Data nugget (5 minutes, Will)

• PFT plots (h1) from unstructured grid are simple!

Science and SE Roadmap for our next 3 months:

slides

• Supported LWMG compsets for the CESM3/CLM6 release https://github.com/ESCOMP/CTSM/issues/2954
  • Matvey: there will be scientifically supported compsets for NorESM. Calibration with GSWP3 or Cru. See Rosie for more details.
  • also compsets for testing
• Diagnostic and post processing goals we'd also like to provide through CUPiD / ADF for Land
• Documentation: Preliminary discussion
  • Issue #2113: Documentation of new features needed
  • All open documentation Issues (not devops)
• Assign roles to plan focused time (sprints, hack-a-thon, etc) for making progress on these goals

Feb 6

Updates and Announcements (10 minutes)

• Welcome:

• Wins:

  • CTSM5.3 release tag made, see new features in this latest model update
  • Skeleton of an end-to-end workflow for python based Land Diagnostics using ADF. Thanks to the SEWG Hackathon, look for opportunities to contribute!
  • Sam R has a draft pull request to CUPiD for crop model analysis.

• Announcements:

  • Land & BGC Winter working group February 24-26
    • registration is open, talks requested by February 7
  • CESM Tutorial application open, due Feb 7

ISIMIP (< 20 minutes)

• Sam Rabin: Introduction and questions from the steering committee
• Link to ISIMIP slides

Latest land only parameterization (30 minutes)

• Sam Levis, Linnia & Will - looking at historical results from our latest PPE informed land parameterization
• Intro slides here

Jan 16

Updates and Announcements (10 minutes)

• Welcome:

  • Ben Buchovecky @ Univ of WA
  • Shuyue Li @ Univ of ID

• Wins:

  • Guoqiang send off gathering tonight at S. Sun
  • Regridding ne30 output to f09 grid using tools developed by Marit at NorESM. Thanks Rosie!
  • Yifan's paper using CTSM in RASM over Alaska published in JGR-A

• Announcements:

  • Land & BGC Winter working group February 24-26
    • registration is open, talks requested by February 7
  • CESM Tutorial application open, due Feb 3

Data nugget (10 minutes)

• Sam Levis: time updates in latest CTSM5.3 tags & what it means for your workflows (preliminary)
• Slides on google drive

Amy Liu (& UW team)

• Photosynthesis response to perturbed Medlyn slope parameter in land-only and land-atm runs

Jan 9

Updates and Announcements (10 minutes)

• Welcome:

• Wins:

  • Baby Enzo joined Danica, Jon & Tiko on Saturday
  • Gordon's analysis of trends in CESM2-LE published
  • CLM-Urban team published paper transient urban extent and properties, led by Yuan Sun

• Announcements:

  • Land & BGC Winter working group February 24-26
    • registration is open, talks requested by February 7
  • CESM Tutorial application open, due Feb 3

Data nugget (10 minutes)

Latest simulations & diagnostics (40 minutes)

See issues and discussion on:

• LMWG_dev
• CESM_dev
• AMGW_dev

Slides to share