ESM2025-N-cycle

This page is dedicated to the ESM2025 project (Earth System Models - European Project), especially for the N-cycle modelling. On this topic are working Marion Gehlen, Juliette Lathière, Didier Hauglustaine, Nicolas Vuichard and Karine Laurent.

You will find information on the evolution of the project on these different pages:

• Meetings: report of meetings every 15 days;
• Intermediate Conclusions: some partial conclusions;
• Notebooks list: description of working documents;
• References: some interesting references (to do)

Last meeting

On Wednesday, 7th September

In person with Didier and Nicolas.

Now, simulation on pre industrial period is good. The pressure evolution seems to depend on temperature (sst) or anything else that does not correspond to pre industrial period (slight increasing around 2008).

Next week (or the one after), Anne will be invited to learn more about configuration/physics/radiative code and to converge step by step towards a coupled version.

TO DO

• make graph of evolution of loss (same as vmrn2o);
• run a simulation with some imposed year as 1980.
• continue to develop code for present days.
• keep in mind the work with large region (CEDS inventories, see Maureen).

Last intermediate conclusions

Pre industrial run

• 39 layers,
• from fictives years 1970 to 2015

• Total N₂O loss: 10.73 TgN/y
• Total N₂O emissions: 10.73 TgN/y
• Burden : 1368 TgN

CEDS emissions for N₂O (and NH₃)

Last notebooks/working documents

5. work_on_data_to_complete_sectors_with_unknows_categories : Notebook in order to better understand repartition of subcategories that are not in CEDS emissions files and grouped in sectors.
6. Transform_2000nc_from1970_to1999_via_CEDScsv : To reconstruct geographical emissions from 1970 to 1999 from 2000's emissions and with a ratio computed thanks to csv's data. Need to use obelix' script home/users/klaurent/CEDS_transform/nco_transform_1970_1999_ncfiles.sh after this notebook (delete _FillValue mainly).

+ on Irene:

• on workdir: scripts_nco/prepare_N2OLOSS.job: will compute N2O total loss, N2O phtolyse loss, N2O o1d loss and N2O burden. This file creates some nc file on scratch directory (in Loss_files) and some txt file in place.

+ on Ciclad/Spirit?:

• INCAFLXANT_1970_1999.sh: bash script to create sflx_lmdz_ANT for irene (source code in ANT/McDuffie. The creation is made on datadir.

+ on Obelix:

• CEDS_transform/nco_transform_1970_1999_ncfiles.sh: final step on nc files while transforming excel data into nc files.