= ESM2025-N-cycle = 

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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:
== [wiki:ESM2025-N-cycle/Meetings Meetings]: report of meetings every 15 days;

=== On Wednesday, 24th August === 

In person with Didier and Nicolas. PDF support (see attached file [[Image(wiki:ESM2025-N-cycle:meeting_220824.pdf)]]).

Resume of august simulations and work.

* Transformation of CEDS emissions: from 1970 to 1999, use of netCDF file 2000 with a factor per sector to create netcdf emissions. Notebooks **Transform_2000nc_from1970_to1999_via_CEDScsv.ipynb** and **work_on_data_to_complete_sectors_with_unknows_categories.ipynb**
* 2 simulations: L39.v03 as a base (pre-industrial, constrained to 285ppm), then pi_piscideeL (free, pre industrial, 40 years).

Results seem good regarding vertical pressure profile, total loss N,,2,,O, pattern of emissions. Need to investigate more and continue.


__//**TO DO**//__
* Make graph of pressure for those two simulations,
* Continue piscideeL 5 years and compute mean of loss,
* Resume differences between former simulations,
* Re-create netCDF files with only manure_management (and not soil_emissions) for agricultural sector.



== [wiki:ESM2025-N-cycle/Intermediate_conclusions Intermediate Conclusions]: some partial conclusions;

=== Pre industrial run ===
 - 39 layers,
 - from fictives years 1970 to 2015
 - 

* Total N,,2,,O loss: 10.73 TgN/y
* Total N,,2,,O emissions: 10.74 TgN/y
* Burden : 1368 TgN



=== CEDS emissions for N,,2,,O (and NH,,3,,) ===
[[Image(wiki:ESM2025-N-cycle:N2O_CEDS_supplementary_avion.png, 700px)]]
[[Image(wiki:ESM2025-N-cycle:NH3_CEDS_supplementary.png, 700px)]]


== [wiki:ESM2025-N-cycle/Notebooks_list Notebooks list]: description of 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).

== [wiki:ESM2025-N-cycle/References References]: some interesting references (to do).