Changes between Version 58 and Version 59 of ESM2025-N-cycle
- Timestamp:
- 08/23/24 18:26:31 (6 months ago)
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ESM2025-N-cycle
v58 v59 4 4 5 5 This page is dedicated to the ESM2025 project (Earth System Models - European Project), especially for the N-cycle modelling. 6 On this topic are working Marion Gehlen, Juliette Lathière, Didier Hauglustaine, Nicolas Vuichard and Karine Laurent .6 On this topic are working Marion Gehlen, Juliette Lathière, Didier Hauglustaine, Nicolas Vuichard and Karine Laurent, with the help of Anne Cozic. 7 7 8 8 You will find information on the evolution of the project on these different pages: 9 9 10 * [wiki:ESM2025-N-cycle/Meetings Meetings]: report of meetings every 15 days;10 * [wiki:ESM2025-N-cycle/Meetings Meetings]: report of meetings every week; 11 11 * [wiki:ESM2025-N-cycle/Intermediate_conclusions Intermediate Conclusions]: some partial conclusions; 12 12 * [wiki:ESM2025-N-cycle/Notebooks_list Notebooks list]: description of working documents; … … 17 17 18 18 19 === On Wednesday, 22th November===20 With everyone.19 === On Friday 19th July === 20 With Didier, Nicolas, Anne, Thibaut and Marion. 21 21 22 Comparison of lifetimes between run of Prather with and without nudging. 23 Try to understand results for the coupled model (fully coupled, only ocean/atmosphere coupling, only land/atmosphere coupling, no coupling). It stresses on the initial state (restarts). 22 Show different results for preindustrial runs with different initial concentration (315/325/320ppb whole atmosphere). Always big jump at the beginning. 23 24 Run pisces ok, many years already computed: meeting next monday with the two Marion. 24 25 25 26 __//**TO DO**//__ 26 * Interpolate the oxidants in the CMIP6 simulation using Olivier's script, 27 * Run simulation of Prather with these oxidants, 28 * Run simulation with Prather advective scheme (no nudging), 29 * See if a stable initial state for the ocean exists (with Christian and Marion). 30 27 * Remake of ratio atm/surf (not the first year) 28 * Find equilibrium state with lifetime of 130 years and ratio atm/surf=0.967 31 29 32 30 == Last intermediate conclusions == 33 31 32 === Comparison with Prather's article === 34 33 35 == Reconstruction of anthropogenic N,,2,,O emissions in pre industrial == 36 1. from 1850 to 1969: proxy with NMVOC and linear regression, only total emissions per region (no information about sectors); 37 2. from 1850 to 1969: reconstruction per region using 1970's emissions as reference; 38 3. from 1970 to 1999 (extended to 2019): reconstruction per region and sector, using 2000's emissions as reference. (+''modification of agriculture sector by factor 0.40 in order to drop soil emissions.'') 34 Reduction parameter of 1.3 on reaction rates to be in accordance with present day lifetime (observation). 35 A previous value was 1.1 but it was only support on reaction rate and not on photolysis rate too. 39 36 40 [[Image(wiki:ESM2025-N-cycle/Intermediate_conclusions:final_em.png, 500px)]] 41 [[Image(wiki:ESM2025-N-cycle/Intermediate_conclusions:final_em_sect.png, 500px)]] 42 43 **Remark:** A slight difference exists between data from csv file and data in netCDF file; it can be shown with the comparison of 'Notebooks/N2O_sector_country_via_ncfile_maks.csv' (data from netCDF file) and 'Notebooks/total_em_CEDS_sector_country_1970_2019_repartEDGAR2.csv'. This might be due to the maks used... 44 37 [[Image(wiki:ESM2025-N-cycle/Intermediate_conclusions:fig5_prather_1.3.png, 500px)]] 45 38 46 39 == Last notebooks/working documents ==