= Evaluation of ORCHIDEE for N coumpounds emissions =

Working group

Mohamed Saad, Nicolas Vuichard, Juliette Lathiere, Didier Hauglustaine

Planned work

1-Perform a set of simulations with the ORCHIDEE model to quantify the fluxes of nitrogen compounds (NH3,NOx,N2O) emitted by the soil.

2-Evaluate simulated emissions at national, continental and global scales by comparing them to emissions by other methods such as inventories (eg: EDGAR).

3-Develop the coupling between ORCHIDEE and INCA models in terms of downward (deposition)and upward(emissions) N fluxes.

Team meeting: 06/03/2019

Define the work steps:

• Read some bibliographical references related to the subject of work.
• Start by seeing outputs of a simulation performed by the ORCHIDEE model as part of NMIP (Tian et al., 2018a, b).
  • look at the variable NH3_EMISSION which gives the emissions per m2 of each type of vegetation. It is an information to combine with the file VEGET_MAX which gives us the fraction of mesh occupied by each type of vegetation.
• See the outputs of the NH3 simulations made by INCA to compare them with those of ORCHIDEE.

Team meeting: 13/03/2019

Evaluate the outputs of the NH3 (monthly, seasonal(averaged, maximum, minimum)) simulations of ORCHIDEE (2016) and INCA.

Emissions of NH3 simulated by ORCHIDEE model for the month of January 2016.

Emissions of NH3 simulated by ORCHIDEE model for the month of February 2016.

Emissions of NH3 simulated by ORCHIDEE model for the month of March 2016.

Emissions of NH3 simulated by ORCHIDEE model for the month of April 2016.

Emissions of NH3 simulated by ORCHIDEE model for the month of May 2016.

Emissions of NH3 simulated by ORCHIDEE model for the month of June 2016.

Emissions of NH3 simulated by ORCHIDEE model for the month of July 2016.

Emissions of NH3 simulated by ORCHIDEE model for the month of August 2016.

Emissions of NH3 simulated by ORCHIDEE model for the month of September 2016.

Emissions of NH3 simulated by ORCHIDEE model for the month of October 2016.

Emissions of NH3 simulated by ORCHIDEE model for the month of November 2016.

Emissions of NH3 simulated by ORCHIDEE model for the month of December 2016.

Averaged emissions of NH3 simulated by ORCHIDEE model for the winter season of 2016.

Maximum emissions of NH3 simulated by ORCHIDEE model for winter season of 2016.

Minimum emissions of NH3 simulated by ORCHIDEE model for the winter season of 2016.

Averaged emissions of NH3 simulated by ORCHIDEE model for the spring season of 2016.

Minimum emissions of NH3 simulated by ORCHIDEE model for the spring season of 2016.

Averaged emissions of NH3 simulated by ORCHIDEE model for the summer season of 2016.

Maximum emissions of NH3 simulated by ORCHIDEE model for the summer season of 2016.

Minimum emissions of NH3 simulated by ORCHIDEE model for the summer season of 2016.

Averaged emissions of NH3 simulated by ORCHIDEE model for the autumn season of 2016.

Maximum emissions of NH3 simulated by ORCHIDEE model for the autumn season of 2016.

Emissions of NH3 simulated by INCA for the month of January.

Emissions of NH3 simulated by INCA for the month of February.

Emissions of NH3 simulated by INCA for the month of March.

Emissions of NH3 simulated by INCA for the month of April.

Emissions of NH3 simulated by INCA for the month of May.

Emissions of NH3 simulated by INCA for the month of June.

Emissions of NH3 simulated by INCA for the month of July.

Emissions of NH3 simulated by INCA for the month of August.

Emissions of NH3 simulated by INCA for the month of September.

Emissions of NH3 simulated by INCA for the month of October.

Emissions of NH3 simulated by INCA for the month of November.

Emissions of NH3 simulated by INCA for the month of December.

Averaged emissions of NH3 simulated by INCA for the spring season.

Maximum emissions of NH3 simulated by INCA for the spring season.

Minimum emissions of NH3 simulated by INCA for the spring season.

Averaged emissions of NH3 simulated by INCA for the summer season.

Maximum emissions of NH3 simulated by INCA for the summer season.

Minimum emissions of NH3 simulated by INCA for the summer season.

Averaged emissions of NH3 simulated by INCA for the autumn season.

Maximum emissions of NH3 simulated by INCA for the autumn season.

Minimum emissions of NH3 simulated by INCA for the autumn season.

What is the temporal variability of the emissions of NH3 mainly for the months of May and September?

Recommendations

• include the global balances of the emissions of NH3 for ORCHIDEE and INCA for the period of 2000-2014.

Team meeting: 20/03/2019

• See references and inventories.
• Compare the emissions of NH3 with those of NOx for the EDGAR inventory.