Changes between Version 37 and Version 38 of ESM2025-N-cycle


Ignore:
Timestamp:
10/05/22 16:34:02 (19 months ago)
Author:
klaurent
Comment:

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  • ESM2025-N-cycle

    v37 v38  
    1515 
    1616== Last meeting == 
    17 === On Wednesday, 21th September ===  
     17=== On Wednesday, 5th October ===  
    1818 
    19 In person with Juliette, Marion and Nicolas.  
     19In person with Didier and Nicolas.  
    2020 
    21 Presentation of recent results for the present day run, with: 
    22  1) Data used (BBG, NAT and ANT); 
    23  2) Results of vertical profiles and total loss for 2000 (year with an imposed rescaling at 316 ppb); 
    24  3) Results over the whole period (2000-2007) with vertical concentration, surface concentration, total loss and burden. 
     21Review of the latest results for the present day run (because Didier wasn't present at the last meeting), with: 
     22  1. Data used (BBG, NAT and ANT); 
     23  2. Results of vertical profiles and total loss for 2000 (year with an imposed rescaling at 316 ppb); 
     24  3. Results over the whole period (2000-2007) with vertical concentration, surface concentration, total loss and burden. 
    2525 
    26 Oceanic emissions seem constant over 150 years: Marion says it is okay, because N2O concentration are not so modified with increase of temperature and so on. 
     26Show first result of countries/great regions repartition. Mainly, discussion due to a reduction in seasonality when removing soil emissions from the agricultural sector (with the help of a factor). Interrogation of which repartition country/great region to use: the EDGAR/Minx one (more precise and fine than the other two found in CEDS/Hoesly articles). 
    2727 
    28 Discussion about the rescaling factor: if it is too low, it means that emissions are low too; if the correction is too big, emissions are too important also. 
     28What to do before 1970? Discussion on reconstruction emissions for pre industrial period (from a proxy or with surface concentration + total loss): 
     29  * The idea of a proxy from NMVOC/CEDS could be interesting because the evolution of emissions seems to be similar between NMVOC and N,,2,,O (by great regions and/or sectors).  
     30  * An other idea (but more atypical) could be to see the difference between burden and total loss to the atmosphere in order to determine the sources. And then, using natural and biomass burning emissions (considered as good), we can determine emissions from anthropogenic sources (globally, not sector by sector). 
    2931 
    3032__//**TO DO**//__ 
    31  * Chart of CEDS without soil emissions category, 
    32  * Plot BBG emissions in same units than others graphs (meaning in Tg/yr) 
    33  * Invest if it is possible to recover input emissions from surface concentration and total loss (in order to better reconstruct emissions) 
     33 * Continue to explore the CEDS inventory and the analysis by country (aggregate by great region and then use mask to reconstruct global emissions). 
     34 * Make a test: from total loss distribution and burden (of CMIP6 simulation): try to recover anthropogenic emissions. 
     35 * Use a proxy-like from NMVOC to reconstruct anthropogenic emissions from 1850 to 1970. 
     36 * Compare EDGAR emissions and CEDS emissions (global and by great regions). 
    3437 
    35 [[Image(wiki:ESM2025-N-cycle:c2-concentration_prstdayL.png, 500px)]] 
    36 [[Image(wiki:ESM2025-N-cycle:c1-vertical_profil_prstdayL.png, 500px)]] 
    37 [[Image(wiki:ESM2025-N-cycle:c3-loss_prstday.png, 500px)]] 
    38 [[Image(wiki:ESM2025-N-cycle:c4-burden_prstday.png, 500px)]] 
     38The main objective of the coming weeks will be to have natural, biomass burning and anthropogenic emissions from 1850 to 1970 (in order to use them into the coupled model). 
    3939 
    40 [[Image(wiki:ESM2025-N-cycle:a1-emissionsNAT.png, 500px)]] 
    41 [[Image(wiki:ESM2025-N-cycle:a3-emissionsBBG.png, 500px)]] 
    42 [[Image(wiki:ESM2025-N-cycle:a4-emissionsANT.png, 500px)]] 
     40For the next ESM2025 meeting, maybe prepare some slides (on subject: //Forcing  data and emissions compiled and harmonized (i.e. any new forcing not available from CMIP6 - e.g. anthropogenic CH4 emissions) for use in XCA2 demonstration simulations//) 
    4341 
    4442