Interesting:

"The impact of a single shared component on pairwise RMSEs is visible for almost all the variables studied here, and the more components are shared, the stronger the reduction of RMSE is. The differences caused by the simple change of resolution or addition of secondary components are generally small, not necessarily much bigger than the impact of internal variability for future changes."

(Boe 2018 on climate model independence,
https://onlinelibrary.wiley.com/doi/abs/10.1002/2017GL076829
#ClimateModelling)

@accessrel Well, there’s a lot to say on this :-). I think everything in this diagram is in scope:
https://mastodon.nz/@bnlawrence/109511356664277128

We have some “close to best practice” and quite a lot of “lessons learned” (as in we know what not to do). Might be worth a chat in the new year.

#ClimateModelling

From Francois Massonnett in the other place, reporting a recent seminar in UCLouvain:

"On climate models, Prof. Thomas Stocker nails it:

« We don’t need one, but rather a hierarchy of climate models, so that we can extract just the right amount of information needed for decision making »"

(So, I’d link to this, but if twitter wont let anyone link to mastodon, I can choose not to link to twitter, so apologies Francois)

(I was over there cleaning up.)

#ClimateModelling

🚨New #NaturePaper
'The #PhanSST global database of #Phanerozoic sea surface temperature proxy data'
— containing over 150,000 data points from 5 proxy systems
— led by Emily Judd
#SeaSurfaceTemperature #SST #ClimateModelling #IODP #ScientificOceanDrilling @nature

https://www.nature.com/articles/s41597-022-01826-0

📢 New Paper #NatureCommunications

Persistent high latitude amplification of the Pacific Ocean over the past 10 million years
— By Xiaoqing Liu, Matthew Huber, Gavin Foster, Andrew Dessler & Yi Ge Zhang #IODP #ScientificOceanDrilling

Debate: While polar #ocean amplification is seen in modern observations, #paleoclimate records & #ClimateModelling, provide better constraints on the magnitude & pattern to provide insights into the mechanisms that drive it.

https://www.nature.com/articles/s41467-022-35011-z

Having looked at DCPP, I’ve been looking at other #cmip6 MIPS.

ScenarioMIP (O’Neill et al 2016, https://view.es-doc.org/index.html?renderMethod=id&project=cmip6&id=946932cc-6e96-4a9d-8c31-c5b09aa988c5&version=1, and https://www.geosci-model-dev.net/9/3461/2016/) resulted in just under 220,000 simualted years, with 80,000 of those done in Europe):

rcp26-cmip5 949
rcp45-cmip5 949
rcp85-cmip5 949
ssp119 21759
ssp126 45637
ssp245 50086
ssp370 30452
ssp434 6787
ssp460 6957
ssp534-over 12694
ssp585 41758

#ClimateModelling #simulation

I’ve just been looking at the incredible effort put into the decadal climate prediction project (part of CMIP6), by, particularly, European modelling groups

Overall just under 80,000 years were simulated and loaded up into the ESGF.

Of those, just over 52,000 were simulated by European modelling groups.

(Caveat emptor on those numbers, they’re based on some pretty quick hacky python using esgf-pyclient - if anyone wants to correct them, please do!)

#ClimateModelling #simulation #ESGF

We just had our weekly CMS group meeting. Most of us putting substantial work into setting up the CANARI Single Model Large Ensemble (#SMLE) to produce 600y from a medium resolution #GCM. It’s going to be quite a thing!

(CANARI is a NERC project aiming to improve our capability to detect, explain & predict climate variability & changes in the Arctic and North Atlantic, with a focus on extreme weather risk and impacts in the UK: https://ncas.ac.uk/our-science/long-term-collaborations/canari/ )

#simulation #esm #ClimateModelling

Belated #introduction. Expat #kiwi living in Europe, albeit a bit with an identity crisis. Will toot about the #uk, sorry!

Into #climate, #ClimateScience & #ClimateModelling (particularly #ESM and #hydrology) using #CloudComputing & #HPC.
Also #DataScience, #DigitalCuration #metadata & the philosophy & practice of #simulation in all sci.

History: I brought the internet to the south island of NZ & invented and ran #jasmin for 10y (https://jasmin.ac.uk) Helped procure #Archer & #Archer2.