# OGGM Open Meeting

###### tags: `oggm` `meeting notes`

About the format:
- **Flash updates**: quick round of short updates (~2 minutes), request of additional agenda items for longer discussions
- **Group agenda points**: longer, open discussion points of the day. Could be something that needs input from all participants, a discussion about model choices, or a prepared presentation from one of the members. Note that **our goal is to keep "Flash updates" + "Open agenda" under one hour** in order to keep a dynamic meeting.
- **Specific discussion:** more technical items that may not be of interest to everyone (e.g. about a specific problem, master thesis, etc.). These will take place after the official part.
- **Action items**: what needs to be done after the meeting and by who
- **Move to next meeting**: items that couldn't be discussed this time

# Call: 2021-09-29

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)

### Flash updates

### Group Agenda Points

### Action items

# Call: 2021-09-15

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Larissa van der Laan / University of Hannover / @Lvdlaan
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi
- Patrick Schmitt / University of Innsbruck / @pat-schmitt
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Samar Minallah / University of Michigan Ann Arbor
- Jeremy Bassis / University of Michigan Ann Arbor

### Flash updates
- Samar:
- PhD student who recently started using OGGM regionally for High Mountain Asia
- Jeremy:
- Supervisor of Samar, and using OGGM for teaching
- Anouk:
- Workshop preparations and writing
- Larissa:
- Svalbard fieldwork data & OGGM: calving problematics
- Jan:
- Troubleshooting in model and script code
- Patrick:
- Start of PhD and Workshop preparation
- Lilian:
- came back from a "glaciers in a warming climate" workshop for school students that I gave together with a colleague
- Fabien:
- Working on quite some additions and changes to the docs before the workshop.

### Group Agenda Points

- new MB calibration

### Action items

# Call: 2021-09-01

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Julia Eis/ University of Bremen/ @juliaeis
- Nicolas Champollion / Institut des Géosciensce de l'Environnement / @nchampollion
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi
- Sarah Hanus / University of Zurich / @sarah-hanus
- Fabien Maussion / University of Innsbruck/ @fmaussion

### Flash updates
- Julia:
- Back from maternal leave, but will take a second time (most likely) from beginning of next year onwards
- on vacation the next two weeks
- Nicolas:
- Breaking news ! glaciers of the Mont-Blanc massif will probably not survive the 21st century !
- OGGM workshop 2021
- Jan:
- Back from vacation, back to projections concerning frontal ablation
- Anouk:
- I'm mostly writing at the moment.
- Fabien:
- OGGM release 1.5.2
- classroom.oggm.org
- paper writing when time permits

### Group Agenda Points
- AGU 2021

### Action items
- In context of the OGGM workshop: For those to whom it applies, don't forget to answer the e-mail about you intended arrival time, vaccination status and presentation title.

# Call: 2021-08-18

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Nicolas Champollion / Institut des Géosciensce de l'Environnement / @nchampollion
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi
- Fabien Maussion / University of Innsbruck/ @fmaussion

### Flash updates

- Anouk:
- recent short holiday
- Blog post: https://oggm.org/2021/08/05/mean-forcing/
- Lily
- helped with GlacierMiP blogs and experiments
- surface type distinctions
- Fabien:
- GlacierMiP3 nightmare (and another blog post: https://oggm.org/2021/08/10/equilibrium-runs-oggm/)
- Back to my overshoot runs and some OGGM maintainance work

# Call: 2021-08-04

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Beatriz Recinos / NOC (at the moment) soon Uni-Edinburgh working with fenics_ice (https://gmd.copernicus.org/preprints/gmd-2021-90/) / @bearecinos
- Fabien Maussion / University of Innsbruck/ @fmaussion

### Flash updates
- Lilian:
- included exp. changing melt factor between snow and ice into surface type distinction model
- started first projections, that show that including surface type distinction can have quite an impact
- trying to do some systematic checks with ConstantMassBalance and surface type distinction but I have still problems to implement a working constant mass balance model

# Call: 2021-07-21

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Nicolas Champollion / Institut des Géosciensce de l'Environnement / @nchampollion
- Damien Maure / Institut des Géosciences de l'Environnement / @damienmaure
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi

### Flash updates

- Jan:
- Working on projections with calibrated k parameter for frontal ablation from Will's data; some technical issues left
- Starting to work with Marco on submarine melt implementation / (statistical) downscaling of ocean data.
- Anouk:
- I did some simulations that showed little difference between using the constant and random mass balance model, or at least less difference in the glacier volume than I thought might occur on a regional level. There were however spatial differences.
- I'm looking into more detail at glaciers simulations I forced with the climate from single forced simulations (CESM-LME). In specific I'm looking into the non-linearity, when trying to attribute the changes in the glaciers.
- My defense date got cancelled.
- Nicolas:
- PhD subject on high moutain Asia
- OGGM workshop program
- Hamid:
- Finishing PROTECT report about the parametrization of debris cover impacts implemented in OGGM.

# Call: 2021-07-07
Was cancelled due to a lack of participants.

# Call: 2021-06-23

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Nicolas Champollion / Institut des Géosciensce de l'Environnement / @nchampollion
- Damien Maure / Institut des Géosciences de l'Environnement / @damienmaure
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi
- Sarah Hanus / University of Zurich / @sarah-hanus

### Flash updates
- Jan
- (have to go a bit earlier today, that's why I put myself first :P)
- Met with Will to discuss his data in a bit more detail --> working on per-glacier calibration of frontal ablation parameter --> projections
- Anouk
- I have (finally) a date for my defense. 30 August it is :)
- I started writting and I'm planning to do some simulations in the coming week.
- Lilian
- workflow created that Sarah can use daily mb-model of the mass-balance sandbox with run_with_hydro... and W5E5v2
- surface type distinction with monthly updates, model remembers if mb already computed
- Nicolas
- progress about the comparison of Elmer/Ice model and OGGM
- Hamid
- A new repository (Mass balance with debris) is almost ready to be uploaded on github.
- Working on a AGU abstract
- Working on calibration mass balance to avoid underestimation of MB (or overestimation) with debris cover!
- Sarah
- hiked on a glacier for the first time in my life :)
- looked at Lili's workflow, added some tests, now looking what to change to make run_with_hydro function work on daily timesteps

### Group Agenda Points
- Journal club -> skip July and August, start again in September. Advice: a little shorter presentation and more time for discussion
- We will keep having our regular meetings every 2-weeks during the summer. Though they might turn out to be very short.
- OGGM workshop in september -> update about regulations, participants, program

# Call: 2021-06-09

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Will Kochtitzky / University of Ottawa
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Beatriz Recinos / NOC / @bearecinos
- Jakob Steiner / ICIMOD / @fidelsteiner
- Larissa van der Laan / Hannover University / @lvdlaan
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi
- Fabien Maussion / University of Innsbruck/ @fmaussion
- Sarah Hanus / University of Zurich / @sarah-hanus
- Nicolas Champollion / Institut des Géosciensce de l'Environnement / @nchampollion

### Flash updates
- Anouk
- I'm at the moment mostly reading.
- I would like remind you of the journal club meeting next week.
- (about that: we need a new date (sorry))
- Jakob
- curious if a planned open deb-cov-melt model that is planned could match with what Hamid seems to have planned (if he will be around)
- Jan
- cleaned code, started implementing my changes in OGGM and make it write out (frontal) velocities as a state variable to maybe use them for calibrating flow parameters with its_live
- Larissa
- seasonal stuff with OGGM: HIWI
- mostly writing atm.
- Lilian
- started implementing surface type distinction into OGGM with snow-firn-ice buckets,
- can show you one plot where mass-balance profile differences are visible
- we had a productive meeting with David Rounce and I have now a "structure plan" for PhD paper 1
- Hamid
- Converting my developments (Mass balance with debris) on the main codebase to an external package.
- Fabien
- Some PRs merged, time spent in Grenoble flies by
- July - holidays
- Nicolas
- Back from a surgery, looking for 2 main objectives before end of July (paper writing and OGGM on Grenoble cluster) but as Fabien time flies !

### Group Agenda Points
- new date for the journal club (no we keep the date)
- Will will give a short presentation about the TW glaciers data base.

# Call: 2021-05-26

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Beatriz Recinos / NOC / @bearecinos
- Sarah Hanus / University of Zurich / @sarah-hanus
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi
- Fabien Maussion / University of Innsbruck/ @fmaussion
- Lilian Schuster / University of Innsbruck / @lilianschuster

### Flash updates
- Anouk:
- Just back from holiday :)
- Jan:
- I will tell you about what I worked out concerning the glacier front dynamics over the last several weeks.
- How to best implement it regarding other tasks using the "FluxBasedModel" instance
- What is the state of frontal ablation calibration data?
- Bea:
- catch up, few questions about future projects on the MB precipitation factor and oggm-website development.
- Sarah:
- next steps: try to use run_with_hydro with daily meteo input (at least get liquid precipitation output on daily basis), try to run OGGM with same meteo inputs as hydrological model (WFDE5)
- Hamid:
- Working on implementing a debris cover parameterization. This parameterization is now being applied for individual glaciers and soon will be extended to the global scale.
- Fabien:
- v1.5 is released
- nice tweet: https://twitter.com/OGGM_org/status/1395674534548840454
- Lilian:
- got a PhD scholarship from the Austrian Academy of Sciences for 3 years
- thinking about how to "shape" PhD paper 1
- downloaded updated ISIMIP3b data, ISIMIP3a still not yet available

### Group Agenda Points

- update from Jan about calving!

# Call: 2021-05-12

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Sarah Hanus / University of Zurich / @sarah-hanus
- Jakob Steiner / ICIMOD / @fidelsteiner
- Fabien Maussion / University of Innsbruck/ @fmaussion
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Lilian Schuster / University of Innsbruck / @lilianschuster

### Flash updates

- Fabien:
- Gave a talk about the legacy paper at IGE
- Plans a 1.5 release today or tomorrow with the hydro stuff
- Small updates in OGGM
- Jan
- Came to some conclusion on frontal velocity (including sliding) stuff; could introduce it next meeting maybe
- Lilian
- looked at temporal geodetic Hugonnet dataset and its uncertainties and how it fits to direct glaciological measurements
- did sensitivity test of ice thickness uncertainty on projections for a single glacier

### Group Agenda Points

- Experiments Sarah: we talked about past runs with OGGM
- The first and the next journal club meeting: we agreed to continue / Fabi will try to present Roe in three weeks
- EGU experiences

### Action items

# Call: 2021-04-14

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Nicolas Champollion / Institut des Géosciensce de l'Environnement / @nchampollion
- Malisse Lummus / University of Kansas / @mlummus
- Sarah Hanus / University of Zurich / @sarah-hanus
- Larissa van der Laan / Hannover University / @lvdlaan
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Fabien Maussion / University of Innsbruck/ @fmaussion
- Lilian Schuster / University of Innsbruck / @lilianschuster

### Flash updates
- Anouk:
- The dynamic global CESM-LME fully forced simulation are done. Both the global single and fully forced last millennium SMB simulations with a fixed geometry are also done. (All exclude for now the Antarctic glaciers, because CRU was used as a base line climate.) The next step will be to repeat the single forced SMB simulations with a prescribed geometry that is based on the fully forced simulations.
- Larissa:
- Fixed geometry runs for all regions are running. Results for Iceland look promising. Question of ensemble mean forcing/ mean of ensemble results. If ensemble mean forcing: downscaling method?
- Hamid:
- Thinking about how to use the multi-temporal glacier outlines (PROTECT project)in OGGM (e.g. model calibration / validation).
- Sarah:
- try to implement "run_with_hydro" funciton on monthly basis some weeks ago, didn't work so easily, Fabien had a try on it, I looked at his implementation, doesn't quite seem to work yet (lot of nan values?)
- Jan:
- Worked (probably too much...) on frontal velocities
- Now starting to work on EGU presentation
- Fabien:
- Monthly stuff looks ok (https://github.com/OGGM/oggm/pull/1232)
- https://www.earthcube.org/2021-earthcube-annual-meeting will send an abstract

- Lilian:
- what is the influence of geodetic uncertainties versus equifinality on volume projection uncertainties
- meeting with Romain Hugonnet about geodetic data
- I will have to implement a method to aggregate individual glacier uncertainties to regional uncertainties (using variograms)
- working on EGU pico and additional material
### Group Agenda Points

- Anouk:
- Show SMB bias calibration results.
- Fabien:
- hydro monthly output

# Call: 2021-03-31

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Larissa van der Laan / Hannover University / @lvdlaan
- Beatriz Recinos / NOC / @bearecinos
- María Pesci / Hannover University / @mariapesci
- Nicolas Champollion / Institut des Géosciensce de l'Environnement / @nchampollion
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi
- Forrest Schoessow / Byrd Polar — Ohio State / @skogar
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Fabien Maussion / University of Innsbruck/ @fmaussion

### Flash updates
- Anouk:
- I made a little change in the mass balance bias calibration of the subregions for my millenium long runs (not only excluding the tidewater glaciers, but now also the ice caps for the calibration procedure). The dynamic fully forced simulations are almost ready. I plan to start the SMB simulations today.
- Larissa:
- Finished and applied the new delta method using CMIP6 decadal and historical simulations, quite happy with results using them in SMB simulations. Considering the usefulness of using an initialized (Eis et al (2021)) dynamical model.
- Bea:
- Quick feedback on vEGUPICO presentation material. On holidays under lockdown so plenty of time to catch up with the OGGM team
- Nicolas:
- project GRUE (crane in English I guess) using OGGM-edu for teaching kids and municipalies
- Forrest:
- Still calibrating OGGM for tropical Andes. Now have annual glacier outlines 1984-2020, 12 GPR transects & 32 local DEMs for geodetic & topo input.
- Challenges (Maybe questions for group discussion??):
- Debris cover?
- Assigning different MB gradients for accumulation & ablation zones?
- excited to use the OGGM browser-based glacier simulator & OGGM-edu for teaching next week

- Lilian:
- did projections for Alpine glaciers with ISIMIP3b ssp126 and ssp370 with 200 draws for 6 "mb types",
- from where come the volume differences in the draws:
- I believe mainly from the geodetic uncertainties that I apply
- how to distinguish between the different uncertainties?
- are there uncertainties from the Farinotti2019 estimates for each glacier individually? one glen-a for a region or a glen-a for each glacier and draw?
- Fabien:
- not much news, getting ready for grenoble
- had a meeting with mitigation paper co-authors yesterday

### Group Agenda Points
- Journal club.

# Call: 2021-03-17

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Nicolas Champollion / Institut des Géosciensce de l'Environnement / @nchampollion
- Sarah Hanus / University of Zurich / @sarah-hanus
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Larissa van der Laan / Hannover University / @lvdlaan
- Fabien Maussion / University of Innsbruck/ @fmaussion

### Flash updates
- Anouk:
- I have been working on finding the SMB bias, that makes my last millenium simulations end up with the present day glacier volume at the end of the simulation.
- Hamid:
- Working on debris thickness and mass balance.
- Adding debris data as a variable to the binned flowline (elevation_band_flowline)
- Thinking about how to modify an elevation-dependent temperature sensitivity parameter with debri enhancement factor (unpublished data provided by David Rounce)
- Lilian:
- produced "flattened" monthly and daily ISIMIP3b GCM data (so far only for one ensemble)
- working on GCM correction for daily data and daily temp. std
- started to do first projections with ISIMIP3b (WFDE5_CRU as historic climate dataset) using different simple mb module variations
- 200 pf/melt-f combinations, for each inversion is repeated, but glen-a ice thickness calibration only once -> different starting volumes at rgi date
- how to calibrate glaciers without geodetic measurements?
- Larissa:
- Finished the ensemble runs for CMIP5, considering CMIP6. Open to discussion on that!
- My colleague Maria Pescí will join OGGM, interested in the liquid water storage
- Fabien:
- implemented a template for hydro stuff: https://github.com/OGGM/oggm/pull/1224 - it's working and is cool, but is too slow and needs love / work.

# Call: 2021-03-03

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Nicolas Champollion / Institut des Géosciensce de l'Environnement / @nchampollion
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Wilhelm Furian / Humboldt-Universität zu Berlin /@WFurian
- Sarah Hanus / University of Zurich / @sarah-hanus
- Forrest Schoessow / Byrd Polar - OSU / @skogur
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Fabien Maussion / University of Innsbruck/ @fmaussion
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi

### Flash updates
- Nico:
- Start to install OGGM in Grenoble's cluster
- Jan:
- Finalizing blog post
- Thought about way forward concerning (global) frontal ablation projections
- Sarah:
- first try to couple OGGM output to hydrological model
- Forrest:
- GPR calibration in tropics going well
- working on ingesting MB from other environments (DEBAM, PyGEM)
- (possibility to use SLA, ELA observations?)
- i think Tal is submitting abstract to Alpine Glaciology Meeting
- Lilian:
- downloaded wfde5, isimip3a and isimip3b data (precipitation and temperature, available on cluster)
- implemented a daily climate input (prcp and temp.) and also daily mass balance output
- currently working on renaming prcp-bias to prcp. factor everywhere in OGGM and also to allow changing it
from task level
- implemented a bayesian mass balance calibration that works for all european glaciers but it needs more tuning
- e.g. 200 melt_f/prcp_fac combinations for each glacier -> next: do projections
- Fabien:
- submitted habil on Sunday
- starting to think about hydro output for OGGM

### Group Agenda Points
- Nico: is really necessary to have OGGM in Grenoble's cluster ?
- Wilhelm: Question about the performance of OGGM at glacier fronts with proglacial lakes? Is it possible to include the accelerated ablation?
(and some questions about the GCM data I got from fmaussion)
- Jan Notebook

# Call: 2021-02-17

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Sarah Hanus / University of Zurich / @sarah-hanus
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Tal Shutkin / Byrd Polar - OSU / @tshutkin
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Fabien Maussion / University of Innsbruck/ @fmaussion

### Flash updates
- Anouk:
- I have been trying out the new pre-processed directories.
- Sarah:
- getting OGGM glacier based info to raster of hydrological model
- looking at elevation band flowlines and possibility to run OGGM on daily basis
- Jan:
- Working on blog post concerning SLR when accounting for ice volume below sea-level
- Tal:
- GPR data crisis averted.
- I have been looking over Ben Pelto's code for tips on using GPR for OGGM calibration
- Hamid:
- Working on the relationship between debris thickness (melt factor!) and mass-balance
- Lilian:
- still working on how to incorporate the two geodetic msm of every glacier with their uncertainties
and direct glaciological observations of reference glaciers into a mass balance calibration scheme
- and I went through all OGGM tutorials and learnt some stuff again that I had forgotten
- Fabien:
- Working on Habilitation
- "Almost" v1.4 - thanks to all contributions!

# Call: 2021-02-03

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Forrest Schoessow / Byrd Polar - OSU / @skogur
- Sarah Hanus / University of Zurich / @sarah-hanus
- Wilhelm Furian / Humboldt-Universität Berlin / @WFurian
- Nicolas Champollion / Institut des Géosciensce de l'Environnement / @nchampollion
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi
- Tal Shutkin / Byrd Polar - OSU / @tshutkin
- Larissa van der Laan / Hannover University / @lvdlaan
- Fabien Maussion / University of Innsbruck/ @fmaussion

### Flash updates
- Forrest:
- still grappling with best way to tune A factor (Debate: first use VAS to calibrate & last use GPR to validate? Or... only GPR for initial calibration?)
- other members of group are working to ingest DEBAM/PyGEM MB estimates ---> OGGM flow module
- Jan:
- briefly started looking at frontal ablation output of historical CMIP6 runs Fabien conducted and comparing it to observational data collected by David Rounce
- started thinking about ice velocity at the glacier front in dynamical runs again...
- Lilian:
- slowly understanding the problem of equifinality for glacier mb calibration
- working on a new way to calibrate OGGM mb model with geodetic (optimise bias) and glaciological observations (optimise std dev),
to apply the precipitation factor distribution of "similar" glaciers as prior for non-direct glaciological observed glaciers using bayesian inference
- what else could be used as expert information about subregional precipitation factor differences
- Larissa:
- ensemble mess detanglement
- Fabien
- Huge push and little sleep to get this f* release out. "pre-release" now online at:
- Docs: https://docs.oggm.org
- New tutorials website: https://oggm.org/tutorials
- I would be very thankful for feedback and/or help on the docs and tutorials

### Group Agenda Points

- Discussing the idea from @fmaussion of having a journal club, where we could discuss once or twice a month papers related to large scale glacio, Sea-level rise, ect.
- Workflow notebook?
- New OGGM pre-release
- Glacier directories

# Call: 2021-01-20

### Participants

Please sign in below so we know who will be/was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Melissa Mengert / University of Bremen
- Forrest Schoessow / Byrd Polar & Climate Research Center – Ohio State U. / @skogar
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Larissa van der Laan / Hannover University / @lvdlaan
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Fabien Maussion / University of Innsbruck/ @fmaussion

### Flash updates
- Anouk:
- The global single, control and fully forced SMB simulations over the last millennium are finished. (CESM-LME is being used as forcing)
- The 3 dynamic fully forced global dynamic simulations over the last millennium are also finished.
- Submitted an abstract to EGU session *CL1.1 Studying the climate of the last two millennia*.

- Melissa:
- Submitted abstract to session CR3.5
- preparing plots for 1st paper (early stage)
- starting with OGGM tutorials (finally)

- Forrest:
- wrapping up sensitivity tests of factors influencing ice thickness inversion estimates
- evaluating ice thickness inversion estimates using GPR transects
- group is beginning to explore interactivity between OGGM & pyGEM mass balance module
- Co-PI of group has growing interest in OGGM/pyGEM, but is mainly familiar with physically based energy balance models (e.g. github.com/regine/meltmodel). He seeks to explicitly test/measure the influence of more surface energy components (principally, the radiative fluxes) during transient simulations. Obvious issues here w/ empirical TI model framework...
- Impossible? Alternatives? Any thoughts?

- Hamid:
- Still working on spatial distribution of debris
- Lilian:
- Submitted abstract to session CR3.5
- working on calibrating OGGM mb module with geodetic data and applying bayesian inference with PyMC3
- Larissa
- Submitted abstract to session CL2.5
- Working on bias correction decadal runs
- Jan:
- Soon starting with paper on frontal ablation's influence on global/regional projections
- Fabien:
- Sent an abstract to EGU about the new simulations ran with MAGICC forcing
- Would still like to do an OGGM release but doesn't manage

### Group Agenda Points

- Forrest presented the latest results on sensitivity experiments

# Call: 2021-01-06

### Participants

Please sign in below so we know who was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Nicolas Champollion / IGE lab of Grenoble / @nchampollion
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Julia Eis/ University of Bremen/ @juliaeis
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Fabien Maussion / University of Innsbruck/ @fmaussion
- Larissa van der Laan / University of Hannover / @Lvdlaan
- Forrest Schoessow / Byrd Polar & Climate Research Center – Ohio State / @skogar
- Tal Shutkin / Byrd Polar & Climate Research Center – Ohio State

### Flash updates
- Anouk:
- Started global simulations for the last millenium with different forcings.
- Nico:
- Master trainee starting in February working on the comparison between Elmer/Ice glacier model and OGGM on Mont-Blanc area
- Lilian:
- uploaded a mb_module with different options into a new github repository with some analysis and tests (https://github.com/OGGM/massbalance-sandbox)
- working on an abstract for EGUv21, but I don't have any results, so it will be rather describing the plan
- Julia Eis:
- will work again on CO2 response time functions and hopefully do some equilibrium runs with OGGM before maternal leave (from 29th January onward)
- How easy is it to run OGGM with CMIP6 at the moment?
- Jan:
- still working on revisions of reconstruction paper
- probably going to work on a paper on global frontal ablation with Fabien and Ben, since Canada stay will be somewhat postponed
- Fabien
- more work with Dave Rounce on OGGM/PyGem compat
- monster PR finally merged, unfortunately no doc / release yet
- CMIP6 runs submitted
- Larissa
- teaching & unrelated paper
- bachelor thesis student started with OGGM
- EGU abstract decadal SMB forecasts
- Forrest, Tal, & OSU gang
- working on paper describing OGGM calibration in tropical setting
- testing sensitivity of ice thickness estimates to DEM, outlines, & other subjective human-made decisions in the workflow (e.g. A factor, etc.)
- using Byrd Polar GPR transects & historical glacier outline database to evaluate ice thickness output

### Group Agenda Points

- CMIP6 runs updates + discussion calving (Fabien)

### Action items
- write in which session you like submit your EGU abstract in the general slack channel

# Call: 2020-12-09

### Participants

Please sign in below so we know who was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Julia Eis/University of Bremen/@juliaeis
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Hamid Mojtabavi / University of Bremen /@Hamid Mojtabavi
- Li Fei / Institute of Tibetan Plateau Research / @Keeptg
- Fabien Maussion / University of Innsbruck/ @fmaussion

### Flash updates

- Anouk
- Faster CESM-LME climate preprocessing
- Julia
- successfully defended my PhD thesis
- now working on the review for the validation paper of real-world reconstructions
- Jan
- Fiddling with ice flow at water boundary
- Lilian
- implemented mb modules with optional use of daily temp_std and of variable temperature gradients, calibrated and applied to Huss flowlines of all Alpine reference glaciers
- in the process of implementing mb module that uses real daily data for comparison
- Li Fei
- use a new climate dataset named the China Meteorological Forcing Dataset (CMDF) in OGGM
- have a try to calibrate the mass balance model on glacier per glacier based on the geodetical mass balance data of Shean(2020)
- Fabien
- Still working on major "WIP" PR. Updates to many aspects now, not getting much closer to merge :-( https://github.com/OGGM/oggm/pull/1099

### Group Agenda Points

- CMIP6: more to show in a couple of weeks!

# Call: 2020-11-25

### Participants

Please sign in below so we know who was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Tal Shutkin / Byrd Polar and Climate Research Center – Ohio State University
- Larissa van der Laan / University of Hannover / @lvdlaan
- Nicolas Champollion / Institut des Géosciences de l'Environnement / @nchampollion
- Pierre-Marie Lefeuvre / Norwegian Polar Institute - UNIS / @pmlefeuvre
- Li Fei / Institute of Tibetan Plateau Research / @Keeptg
- Forrest Schoessow / Byrd Polar and Climate Research Center – Ohio State University / @skogar
- Fabien Maussion / University of Innsbruck/ @fmaussion

### Flash updates

- Larissa results (and struggles) of decadal CMIP5 forcing
- Anouk
- Looking into how to make the preprocessing of the CESM-LME climate faster
- Li Fei
- Finally finished my paper draft
- Forrest
- Byrd Polar group focused on OGGM calibration & validation metrics for tropical Andes (DEM, outlines, inversion params)
- Fabien
- Very focused week working on big OGGM PR: https://github.com/OGGM/oggm/pull/1099
- Still WIP, but many improvements in workflow and some first global comparisons, working with CMIP6 now possible, etc.
- Summary for the group discussion?

### Group Agenda Points

- Larissa presented glacier simulations forced decadal CMIP5
- Overview by Fabien on the https://github.com/OGGM/oggm/pull/1099 pull request

# Call: 2020-11-11

### Participants

Please sign in below so we know who was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Nicolas Champollion / Institut des Géosciences de l'Environnement / @nchampollion
- Larissa van der Laan / University of Hannover / @lvdlaan
- Julia Eis / University of Bremen/@juliaeis
- Fabien Maussion / University of Innsbruck/ @fmaussion
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Hamid Mojtabavi / University of Bremen/ @Hamid Mojtabavi
- Forrest Schoessow / Byrd Polar & Climate Research Center (Ohio State) / @schoessow
- Tal Shutkin / Byrd Polar & Climate Research Center (Ohio State)
- Matthias Dusch / University of Innsbruck / @matthiasdusch
- Lilian Schuster / University of Innsbruck / @lilianschuster

### Flash updates

- Anouk
- Why can my single forced SMB test simulations not be added up for the Arctic in recent times?
- Larissa
- Non-OGGM related paper, CMIP5 decadal runs
- Fabien:
- short report about EU polar week
- short report about GlacierMiP meeting
- still fighting with inversion related problems, good interactions with David Rounce
- Glacio Hack tomorrow and Friday: https://github.com/GlacioHack
- Jan:
- Back to OGGM; experimenting with idealized glacier
- Nico:
- Permanent researcher position at IGE lab in Grenoble, France !
- Matthias:
- Will start a new job next week!
- Lilian:
- nothing OGGM-related
- Working on PhD with alternative SMB models in OGGM
- Forrest Schoessow:
- Ohio State PhD student working with Bryan Mark. A whole group of people at Byrd are looking into various models of glacier evolution (OGGM, PyGEM, DBEM...).

### Group Agenda Points

- Meeting time for US based OGGM friends?
- Anouk showed control simulations figures.

### Action items

- Nico and Fabien meeting next week + CMIP6?
- Is HackMD laggy somehow? I put the very old notes in [another doc](https://github.com/fmaussion/hackmd-notes/blob/master/OGGM-Notes-Legacy.md), it looks faster now.
- Fabien and Anouk will discuss and communicate a new meeting time based on what was discussed during the meeting

# Call: 2020-10-28

### Participants

Please sign in below so we know who was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Larissa van der Laan / University of Hannover / @lvdlaan
- Madlene Pfeiffer / University of Bremen / @mpfeiffer
- Julia Eis/ University of Bremen/ @juliaeis
- Hamid Mojtabavi / University of Bremen/ @Hamid Mojtabavi
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Li Fei / ITP-CAS / @Keeptg
- Melissa Mengert / University of Bremen / @Melissa
- Beatriz Recinos / NOC / @bearecinos

### Flash updates
- Short introduction round of everyone.
- Anouk:
- New approach to checking if my single forced results add up to the fully forced results, in the test simulations
- Larissa:
- CMIP5 decadal forecasts to force OGGM
- Julia:
- preparing my Phd defense
- Jan
- submitting paper this week, then back to OGGM :-)
- Lilian
- I am working on including a kind of "daily" melt model by using monthly mean and daily standard deviation and assuming a gaussian temperature distibution
- however, at the moment I am working again on the revision of a non-OGGM related manuscript
- Li Fei:
- still effort on the paper text, nothing new to share
- Bea:
- saying hello. Greenland paper update.

# Call: 2020-10-14

### Participants

Please sign in below so we know who was here:

Name / Institution / @GitHub handle (optional)
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Julia Eis/ University of Bremen/ @juliaeis
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Moritz Oberrauch / University of Innsbruck / [@oberrauch](https://github.com/oberrauch)
- Fabien Maussion / University of Innsbruck/ @fmaussion

### Flash updates
- Anouk Vlug:
- Testing single forced simulations
- Simulations with prescribed geometry
- Julia:
- SAVE THE DATE: 26.11.2020, 12:00- 14:00 will take place my PhD defence (hybrid: in person and online)
- still working on CO2 response functions with BernSCM (a simple climate model)
- plan to do many equilibrium runs with OGGM (not yet started)
- Jan:
- still nothing new concerning OGGM...
- Lilian:
- nothing new just trying to think Bayesian
- I am working on implementing the Bayesian framework into OGGM, starting first with Hintereisferner and only using mustar as free parameter
- Moritz:
- ACF, PACF and PSD for time series analysis
- Fabi:
- Text on Matthias
- Working on update of pre-processed directories
- found a way to connect jupyter remotely on the cluster

# Call: 2020-09-30

### Participants

Please sign in below so we know who was here:

Name / Institution / @GitHub handle (optional)
- Matthias Dusch / University of Innsbruck / @matthiasdusch
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Julia Eis/University of Bremen/ @juliaeis
- Li Fei / ITP-CAS / @Keeptg
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Fabien Maussion / University of Innsbruck/ @fmaussion

### Flash updates

- Matthias: Struggling with preindustrial climate simulations
- Anouk:
- I started doing simulations on the cluster to test some things. This included checking the effect in using the ensemble climatology instead of the ensemble member its climatology when aplying the anomaly method for a selection of glaciers.
- Jan: nothing new concerning OGGM
- Julia: nothing new regarding oggm
- Li Fei:
- Simulated the glacier change with different temperature and precipitation bias (A cooperative work)
- Calibrating inversion thickness model in Tian Shan
- Training about filed work and glacier rescue
- Lilian: nothing really new, but started to introduce myself a bit more into Machine Learning and Bayesian Methods
- e.g. went through this illustrative jupyter-notebook "book": https://camdavidsonpilon.github.io/Probabilistic-Programming-and-Bayesian-Methods-for-Hackers/
(they use the same package 'pymc' as in David Rounce' PyGEM Bayesian approach)
- Fabien:
- new laptop, unravelled a couple of maintenance tasks for OGGM

# Call: 2020-09-16

### Participants

Please sign in below so we know who was here:

Name / Institution / @GitHub handle (optional)
- Matthias Dusch / University of Innsbruck / @matthiasdusch
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Li Fei / ITP-CAS / @Keeptg
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Julia Eis/ University of Bremen / @juliaeis

### Flash updates

- Matthias:
- Back from vacation
- New OGGM office mates
- Anouk:
- Started in Innsbruck
- Played for the first time with the Bremen cluster
- Did some simulations forced with the CESM-LME starting in 1850 CE
- Li Fei:
- Tried simulating ice thickness by using exponential MB profile
- Paper text
- Lilian:
- PhD proposal submitted last saturday together with Fabien
- thinking about which courses I could take
- Julia:
- code cleaning/example writing of initialization module
- slowly starting the "new" project

# Call: 2020-09-01

### Participants

Please sign in below so we know who was here:

Name / Institution / @GitHub handle (optional)
- Fabien Maussion / University of Innsbruck/ @fmaussion
- Lilian Schuster / University of Innsbruck / @lilianschuster
- Julia Eis/ University of Bremen/ @juliaeis
- Anouk Vlug / University of Innsbruck / @anoukvlug
- Jan-Hendrik Malles / University of Bremen / @jmalles
- Li Fei / ITP-CAS

### Flash updates

- Fabien:
- Lilian PhD project final round
- UIBK part of EU H2020 proposal submitted yesterday
- Lilian:
- PhD officially started by university fellowship
- finalising PhD project proposal for ÖAW-DOC fellowship
- Julia:
- submitted the comparison paper to Frontiers in Earth Science
- finally submitted the thesis (defense will most probably take place mid/end November)
- Jan
- working on code
- Li Fei
- (DEM - COPDEM) Glacier change from topo data
- Anouk
- Arrived in Innsbruck

### Group Agenda Points

- Code within or outside of OGGM

### Action items

# Call: 2020-08-19

### Participants

Please sign in below so we know who was here:

Name / Institution / @GitHub handle (optional)
- Matthias Dusch / University of Innsbruck / @matthiasdusch
- Moritz Oberrauch / University of Innsbruck / [@oberrauch](https://github.com/oberrauch)
- Patrick Schmitt / University of Innsbruck / [@pat-schmitt](https://github.com/pat-schmitt)
- Fabien Maussion / University of Innsbruck/ @fmaussion

### Flash updates

- Matthias:
- see below
- Fabien:
- High school student Josie had a look at OGGM-Edu
- Lilian PhD project
- Moritz:
- Alpine runs on Cluster comparing the volume/area scaling model to the flowline model; scaling underestimates volume change in response to +/- 0.5°C step change; normalized volume change +/-20% with scaling and +60%/-40% with flowline.

### Group Agenda Points
- Matthias: presentation of ensemble results: HISTALP reconstructions since LIA, commitment runs and projections

### Action items

## Older notes

See https://github.com/fmaussion/hackmd-notes/blob/master/OGGM-Notes-Legacy.md