File : D4.2
Author : University of Aberdeen
The statistical model, EDGAR, found that global N2O emissions reached 9.6 Mt in 2018 – an increase of 57% compared to 1970. The agricultural sector was the most important, contributing 76% to the total global N2O emissions. In the EU27+UK region, N2O emissions decreased by 31% since 1970. Global CH4 emissions reached 378 Mt in 2018 - an increase of 43% compared to 1970. The sectors contributing most to the total global CH4 emissions are agriculture (43%), fuel production and transformation (33%) and waste (21%). The EU27+UK region contributed 6% to the total global CH4 emission in 2018 (excluding natural and land-use change emissions). In this region, the CH4 emissions decreased by 33% in the period 1970-2018. At sector level, agriculture, including enteric fermentation, contributed 36%, fuel production and transformation 20%, and waste 28%.
The CAPRI model found that total N2O emissions from European agricultural sources decreased from 2000 to 2010 by about 3%, from 0.58 to 0.56 Mt N2O yr-1, and increased until 2018 by 6% relative to 2010 to a value of 0.60 Mt N2O yr-1. Total CH4 emissions were continuously decreasing in the period 2000-2018 from a value of 8.7 Mt CH4 yr-1 in 2000 to a value of 8.2 Mt CH4 yr-1 in 2018. In 2018, largest emissions of N2O were from application of mineral fertilizers (27%), followed by N2O from crop residues (21%) and manure management (20%). For CH4, the largest contribution was from enteric fermentation (84%), followed by CH4 emissions from manure management (15%) and rice cultivation (1%).
Figure 1 : Annual mean emissions of CH4 (left) and of N2O (right) as estimated by CAPRI for year 2018
