File : D2.10
Author : I. B.. Konovalov (IAP-RAS) et al.
In order to provide first inversions of the fossil fuel CO2 (ffCO2) emissions in Europe during the first years of the project, while the development of the main inversion system for this task 2.3 by LSCE in tasks 2.3.1 to 2.3.3 should last more than 2 years, IAP-RAS has extended the inversions documented in Konovalov et al. (2016), with some modifications of the corresponding inversion system. The inversion targets the annual budgets of ffCO2 emissions over 11 EU countries (Portugal, Spain, France, Belgium, Luxembourg, Netherlands, UK, Germany, Denmark, Italy, Austria) and Switzerland based on the assimilation of total column CO from IASI, and tropospheric column NO2 from OMI (over a modeling domain slightly larger than the EU 11+ Switzerland domain). The results indicate that the uncertainty in the information from the CO inversion is too high to provide reliable estimates of the ffCO2 emissions when using CO satellite data only, or to provide weight to this information when using ffCO2 estimates from both the CO and NOx inversions. The estimates based on NO2 data diverge significantly from that in EDGAR v4.3.2 for the energy, heat and industry production and transport sectors, but they are close to this inventory in terms of total emissions for 2012. These estimates are quite constant over the 4-year period while we assume that the ffCO2 emissions followed a significant negative trend during this period. The analysis shows that the uncertainties in these estimates can explain the difficulty to detect such a trend.
Figure 1 : Spatial distribution of the annual ff CO2 emissions (Tg) in the study region in 2012 according to the EDGARv4.3.2 inventory (a) before and (b) after applying the correction factors inferred from the both OMI NO2 and IASI CO satellite data.
