The Global Production sub-project is responsible for the three pre-operational global production streams and additional experimental streams:
The streams are described below.
The near-real-time production stream produces analyses and 5-day forecasts of global fields of various chemical species and aerosols. The system is run at T255L60, which is approximately 80 km by 80 km at 60 levels. More information can be found in the NRT system description.
Current Experiment ID: g4e2
This production stream provides forecasts of global fields of CO2 at two different resolutions without any constraint from CO2 observations.It lags the operational NWP forecast by 1 day because it waits for the delivery of the MACC GFAS fire emissions. The land vegetation fluxes are modelled online within the IFS by the CTESSEL carbon module. The anthropogenic fluxes are based on the annual mean EDGARv4.2 inventory using the most recent year available (i.e. 2008) with estimated and climatological trends to extrapolate to the current year. The ocean fluxes are from the Takahashi et al (2009) climatology.
The meteorological fields are re-initialized every 24 hours (at 00UTC) using the operational ECMWF analysis and the CO2 fields are allowed to evolve freely from one 24-hour forecast to the next. Because the budget is not constraint by observations, the CO2 global bias can grow from one year to the next. In order to avoid this, the initial CO2 forecast fields are updated every year with the most recent atmospheric 3D fields from the MACC CO2 flux inversion system from LSCE whenever these become available, typically in October.
The high resolution forecast at T1279L91 has horizontal resolution of approximately 16 km (as the operational NWP forecast) and it provides a 5-day forecast. The lower resolution forecast at T255L60 has a horizontal resolution of approximately 80 km in the horizontal (as the ERA-Interim re-analysis) and it provides a 1-day forecast.
The CO2 forecasts lag the operational NWP forecast by 1 day because they wait for the delivery of the GFAS fire emissions.
Current High Resolution Experiment ID: g6dd
The Global Fire Assimilation System (GFAS) provides daily esimates of fire emissions on a 0.1 x 01. degree grid. Satellite observations of Fire Radiative power (FRP) are used to detect fires and estimate emissions.
To support the vaildation fo the pre-operational near real-time production experiments, some forecast-only experiments are run in parallel. Details can be found in the table below..
The delayed-mode production stream produces analyses and 4-day forecasts of global fields of CO2, CH4, and aerosols. It lags near-real-time by 5 months and is run at T511L60, which is approximately 39 km by 39 km at 60 levels. The following satellite data are actively assimilated: MODIS AOD,SCIAMACHY CH4, AIRS radiances, and IASI radiances.
Current Experiment ID: g6cs
The reanalysis production stream produces analyses and 1-day forecasts of global fields of O3, CO, NO2, SO2, HCHO, CO2, CH4, and aerosols. Other reactive gases are available from the coupled chemistry transport model. The reanalysis was started on 17 March 2010 with a 1-month spin-up and will cover the period 2003 - 2010. It runs at T255L60, which is approximately 78 km by 78 km at 60 levels. The coupled chemistry transport model has the same 60 vertical levels and a horizontal resolution of 1.125 degrees x 1.125 degrees. The output fields will be made public every 6 months after some initial quality control.
Please take data from the experiment ffjt for the period 2004062500-2005063012. fbov did not use all the available meteorological observations during that period.
Please take data from the experiment fjw4 for the period 2008040100-2009043012 because there was a problem with the assimilation of CO data in fbov.
Current Experiment ID: fbov
A one-year reanalysis for 2008 using selected CCI data for AER, GHG and GRG was started on 23 December 2013 (EXPVER=g148). It uses the coupled IFS-MOZART system and runs at T255L60, which is approximately 78 km by 78 km at 60 levels. The coupled chemistry transport model has the same 60 vertical levels and a horizontal resolution of 1.125 degrees x 1.125 degrees.
A second one-year reanalysis for 2008 using selected CCI data for AER, GHG and GRG run with C-IFS was started on 16 June 2014 (EXPVER=g4fw). It also runs at T255L60.
A control experiment for 2008 was run parallel to g4fw in which only the meteorological data and no AER, GHG, and GRG data were assimilated (EXPVER=g54z).
Current Experiment ID: g4fw