MIP Virtual Showcases 2026 by

Will AerChemMIP request the MODIS cloud fraction histogram diagnostics that can be used to separate the components of aerosol forcing?

cmipipo — 2026-01-29 09:23:09 UTC

In response to the question on whether MODIS cloud fraction histogram diagnostics are included in the data request, as far as I can tell, the answer is no. Please also refer to the data request paper for the Atmosphere theme: https://egusphere.copernicus.org/preprints/2025/egusphere-2025-3189/

Will any AerChemMIP2 runs be done with the same model codes used in CMIP6 or the same forcings used in the AerChemMIP1 experiments? I'm wondering how we deconvolute the model changes versus forcing changes in the documented responses

cmipipo — 2026-01-29 09:23:34 UTC

Separating the influence of forcing updates vs. model updates is not planned in the framework of AerChemMIP2. It is a topic that the CMIP Climate forcings task team is concerned with. Feel free to follow up offline for more information.

Some CMIP ESMs will not carry all the variables you mentioned, like say Fe of P. Are these essential or optional?

cmipipo — 2026-01-29 16:45:46 UTC

Iron and phosphorus are optional for FishMIP, but they are in the baseline group. Do not need all the variables in that group to meet the requirements. If you would like to know specifically what we need and what we don't, I can provide that. Hoping more models will provide details in CMIP7!

Preprint now available for discussion!

cmipipo — 2026-01-30 08:43:31 UTC

AerChemMIP2 protocol paper in discussion

cmipipo — 2026-01-30 10:06:08 UTC

https://egusphere.copernicus.org/preprints/2025/egusphere-2025-5669/

Data request paper for the Atmosphere including AerChemMIP2

cmipipo — 2026-01-30 10:06:32 UTC

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cmipipo — 2026-01-30 10:06:50 UTC

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cmipipo — 2026-01-30 10:07:33 UTC

I would like to have more detail on DAMIP spatially the counterfactual data, how they are processed.

cmipipo — 2026-02-05 08:04:54 UTC

How many simulation years in total did you get to count?

cmipipo — 2026-02-05 08:16:31 UTC

Will AFT simulations be on ESGF?

cmipipo — 2026-02-05 08:17:59 UTC

Do you have any priority order for other (non-Fast Track) experiments?

cmipipo — 2026-02-05 08:44:51 UTC

In the Data Request, what does subhour mean?

cmipipo — 2026-02-05 08:45:01 UTC

On hist-pi-aer, RAMIP has also been talking with AerChemMIP on this one. Our modellers are interested in it, so we could maybe contriubte

cmipipo — 2026-02-05 09:16:25 UTC

From a carbon cycle perspective - real world is emissions driven. We have been 'faking' the system by doing concentration driven runs for a long time, so it makes sense to prioritise emissions driven mode. I know you have those as tier 2 experiments, but I hope modelling centres contribute these. Adds a different perspective to attribution.

cmipipo — 2026-02-05 09:17:39 UTC

With the extensions being tier 2/3, are you hoping that the historical forcings will be updated more regularly, then you can extend the historical runs?

cmipipo — 2026-02-05 09:19:43 UTC

Why are those locations are determined for the MCB. Looks mid lattitude not sub-tropical, why that selection?

cmipipo — 2026-02-05 16:20:09 UTC

Lots of work to identify regions and sub/tropical regions are highly excited by MCB are response is much less uniform whereas mid latitude are much more uniform response.

Response of Temp in Africa and E Asia is small compared to the other regions, any thoughts?

cmipipo — 2026-02-05 17:02:43 UTC

Looking into it, is atmospheric transport as where aerosols come in and hit ascending branch the response is quite muted. Also associated with the clouds, this is a cloud free region compared to others. Mostly a circulation effect, a dedicated experiment is coming up.

With regard to the forcings, is the focus emission driven simulation rather than concentration driven?

cmipipo — 2026-02-05 17:03:21 UTC

All emissions, really is emission fields, transport, ageing in all models except one.

Can you explain the RAMIP logo?

cmipipo — 2026-02-05 17:03:57 UTC

That is a combination of transport of particles, possibly black carbon, and the colleague designing it loves dragons.

Have you thought about doing a shipping emissions experiment imposing an IMO reduction?

cmipipo — 2026-02-05 17:07:16 UTC

We have considered and was completed for one model, CESM2, in Watson-Parris et al (2025) https://acp.copernicus.org/articles/25/4443/2025/

Aerosol precursors

2026-02-05 17:13:03 UTC

There seems to be a mismatch between the aerosol perturbation simulations in DAMIP and AerChemMIP(2). In DAMIP, NOx, CO and NMVOCs are included as aerosol precursors, whereas in AerChemMIP(2) they are not.

DAMIP GMD paper

2026-02-05 22:24:54 UTC

Which Atmospheric forcing will be used to force the historical land-only (land-hist) simulation?

cmipipo — 2026-02-18 09:44:34 UTC

What is the progress on the predicting skill in case of Low likelihood high impact events in HighresMIP? What could be some feasible and solid starting points to get started for someone wanting to pursue research in this direction?

cmipipo — 2026-02-18 09:45:02 UTC

Is the LMIP protocol available now?

2026-02-19 08:46:33 UTC

As uncertainty persists in tipping points models will AI and satellite Ocean Colour help address this?

cmipipo — 2026-02-19 08:50:14 UTC

@david and kim, the land is being used to store CO2 ,do you have specifications of the land which has to store the co2?and for how long will be stored?

cmipipo — 2026-02-19 09:04:50 UTC

What assumptions do you suggest to get low emission by 2100?

2026-02-19 09:19:49 UTC

Questions about land-amip

andreaalessandri2 — 2026-02-19 09:52:59 UTC

Why is land-amip included in the protocol? is it still land-only (if yes AMIP is confusing)? If land-amip is still off-line land-only, why is it distinguished from land-hist then?

Question about land-hist-hires

andreaalessandri2 — 2026-02-19 09:57:20 UTC

How will the forcing for the high-resolution land-only simulations be prepared?

Predictability assessment in LMIP?

andreaalessandri2 — 2026-02-19 10:04:38 UTC

You mentioned about the objective of LMIP to assess also predictability in the intro; how do you plan to do this in land-only simulations? shall we include AMIP (real atmosphere-land simulations with prescribed SSTs; both historical and future) as tier-2 in the protocol to cover that? maybe good timing now to discuss about this opportunity...

2026-02-19 16:23:15 UTC

Dave, while we try to keep our model parameters the same in coupled and offline simulation, it's not always possible. How bad is this? Vivek

Coupled Land Hist?

2026-02-19 16:26:10 UTC

Is there a Coupled Land Use History run?

For the land-hist, is there any requirement on the number of initial-condition ensemble members?

2026-02-21 11:07:10 UTC

Fixed land surface temperature experiments

2026-02-26 08:17:50 UTC

Is the Zhang et al study shown on your slides published?

Aerosol perturbation experiments

2026-02-26 08:20:35 UTC

How are the aerosol perturbation experiments defined in RFMIP? Assuming aerosols are interactive, should both aerosol and ozone precursors be perturbed (like in DAMIP) or only the aerosol precursors (like in AerChemMIP)?

We are happy to have feedback to our experimental design! Please follow this link to share your impressions:

2026-02-26 09:01:44 UTC

question

2026-02-26 09:16:33 UTC

i would like to know if the role of global ocean circulation have been considered into consideration during the Glacier models as we know it carries Temperatures which affects the thickness of glacier?

question

2026-02-26 09:22:17 UTC

i want to understand how the irrigation models can help to cool down global/regional warming while you didn't consider wind (speed)parameter of the study areas?

question

2026-02-26 09:53:35 UTC

You have considered fire -biomass burning-land model and Fire-aerosol-atmospheric model, what could happen if you also considered : Fire-volcanic -ocean model? because it is proven that geological activities "volcanic activities are happening in the ocean and are causing changes into ocean-land-atmospheric relationship.

CMIP7 DR for ISMIP

2026-02-26 16:23:40 UTC

Where can we ask questions about the ESM variables that are requested for ISMIP7?

Do you look at historical irrigation only? Projections would be very useful as well if possible

2026-02-26 17:03:17 UTC

Rationale for flat10 experiments

cmipipo — 2026-02-26 17:53:37 UTC

Adding and removing the CO2 from a non-steady state - what are you hoping to achieve with these?