The CAMS forecast e-suite (experiment gznv) was started on 2018-06-01 based on IFS CY45R1 to couple the new the GHG analysis experiment (gwx3) running 4-days behind real time and the high resolution cyclic forecast run. This new experiment benefits from a couple of bug fixes in the modelled biogenic fluxes which result in an improved seasonal cycle in the northern hemisphere and some degradation in the tropics.
Main features are:
The experiment was initialized from the GHG analysis experiment gwx3.
The coupling with the analysis is done by merging the 4-day forecast from GHG delayed analysis experiment and the cyclic high resolution forecast.
- Resolution: Tco1279 (9km) and 137 vertical levels
- 5-day forecast from 00UTC
- IFS cycle 45R1
- Coupled to CTESSEL Net Ecosystem Exchange surface fluxes.
- EDGARv4.2FT2010 anthropogenic emissions - scaled from 2011 with estimated and climatological trends for CO2.
- GFASv1.2 fire emissions
- Takahashi et al. (2009) CO2 air-sea CO2 flux climatology.
- IFS model resolution Tco1279L137
- operational meteorological analysis resolution
- branch: paf_CY45R1_paf_CY45R1_GHG_CARBONTRAC_bugfixes
- New tracer mass fixer: Diamantakis and Agusti-Panareda (2017) with BETA value of 2.
Changes introduced during production affecting the quality of the products
| real date | exp date | description of change |
|---|---|---|
| 20190911 | 20190911 | NWP initial conditions taken from DA instead of LWDA in order to speed up the delivery of GHG FC for field experiments. The trigger of the experiment was modified accordingly (taking into account the dates of OPER NWP AN are shifted backward in time) and the GFAS fire emissions used are now from the previous day. |
| 20190911 | 20190912 | The FC from the GHG analysis (running around 4-days behind real time) used to initialise the high resolution GHG FC is now T+120 instead of T+96 in order to make sure that the experiment can start as soon as the OPER NWP analysis is available early in the morning. Otherwise the experiment would not be able to start until afternoon when GHG analysis of 4-day before has finished. |
Flux updates
| real date | expdate | description of change |
|---|---|---|
| 20180815 | 20180730 | CH4 flux bug fix associated with the temporal interpolation of monthly mean fluxes affecting second half of December. |