FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4387373670> ?p ?o ?g. }

• W4387373670 endingPage "4370" @default.
• W4387373670 startingPage "4295" @default.
• W4387373670 abstract "Abstract. Quantification of land surface–atmosphere fluxes of carbon dioxide (CO2) and their trends and uncertainties is essential for monitoring progress of the EU27+UK bloc as it strives to meet ambitious targets determined by both international agreements and internal regulation. This study provides a consolidated synthesis of fossil sources (CO2 fossil) and natural (including formally managed ecosystems) sources and sinks over land (CO2 land) using bottom-up (BU) and top-down (TD) approaches for the European Union and United Kingdom (EU27+UK), updating earlier syntheses (Petrescu et al., 2020, 2021). Given the wide scope of the work and the variety of approaches involved, this study aims to answer essential questions identified in the previous syntheses and understand the differences between datasets, particularly for poorly characterized fluxes from managed and unmanaged ecosystems. The work integrates updated emission inventory data, process-based model results, data-driven categorical model results, and inverse modeling estimates, extending the previous period 1990–2018 to the year 2020 to the extent possible. BU and TD products are compared with the European national greenhouse gas inventory (NGHGI) reported by parties including the year 2019 under the United Nations Framework Convention on Climate Change (UNFCCC). The uncertainties of the EU27+UK NGHGI were evaluated using the standard deviation reported by the EU member states following the guidelines of the Intergovernmental Panel on Climate Change (IPCC) and harmonized by gap-filling procedures. Variation in estimates produced with other methods, such as atmospheric inversion models (TD) or spatially disaggregated inventory datasets (BU), originate from within-model uncertainty related to parameterization as well as structural differences between models. By comparing the NGHGI with other approaches, key sources of differences between estimates arise primarily in activities. System boundaries and emission categories create differences in CO2 fossil datasets, while different land use definitions for reporting emissions from land use, land use change, and forestry (LULUCF) activities result in differences for CO2 land. The latter has important consequences for atmospheric inversions, leading to inversions reporting stronger sinks in vegetation and soils than are reported by the NGHGI. For CO2 fossil emissions, after harmonizing estimates based on common activities and selecting the most recent year available for all datasets, the UNFCCC NGHGI for the EU27+UK accounts for 926 ± 13 Tg C yr−1, while eight other BU sources report a mean value of 948 [937,961] Tg C yr−1 (25th, 75th percentiles). The sole top-down inversion of fossil emissions currently available accounts for 875 Tg C in this same year, a value outside the uncertainty of both the NGHGI and bottom-up ensemble estimates and for which uncertainty estimates are not currently available. For the net CO2 land fluxes, during the most recent 5-year period including the NGHGI estimates, the NGHGI accounted for −91 ± 32 Tg C yr−1, while six other BU approaches reported a mean sink of −62 [-117,-49] Tg C yr−1, and a 15-member ensemble of dynamic global vegetation models (DGVMs) reported −69 [-152,-5] Tg C yr−1. The 5-year mean of three TD regional ensembles combined with one non-ensemble inversion of −73 Tg C yr−1 has a slightly smaller spread (0th–100th percentiles of [-135,+45] Tg C yr−1), and it was calculated after removing net land–atmosphere CO2 fluxes caused by lateral transport of carbon (crop trade, wood trade, river transport, and net uptake from inland water bodies), resulting in increased agreement with the NGHGI and bottom-up approaches. Results at the category level (Forest Land, Cropland, Grassland) generally show good agreement between the NGHGI and category-specific models, but results for DGVMs are mixed. Overall, for both CO2 fossil and net CO2 land fluxes, we find that current independent approaches are consistent with the NGHGI at the scale of the EU27+UK. We conclude that CO2 emissions from fossil sources have decreased over the past 30 years in the EU27+UK, while land fluxes are relatively stable: positive or negative trends larger (smaller) than 0.07 (−0.61) Tg C yr−2 can be ruled out for the NGHGI. In addition, a gap on the order of 1000 Tg C yr−1 between CO2 fossil emissions and net CO2 uptake by the land exists regardless of the type of approach (NGHGI, TD, BU), falling well outside all available estimates of uncertainties. However, uncertainties in top-down approaches to estimate CO2 fossil emissions remain uncharacterized and are likely substantial, in addition to known uncertainties in top-down estimates of the land fluxes. The data used to plot the figures are available at https://doi.org/10.5281/zenodo.8148461 (McGrath et al., 2023)." @default.
• W4387373670 created "2023-10-06" @default.
• W4387373670 creator A5003540571 @default.
• W4387373670 creator A5004873331 @default.
• W4387373670 creator A5006387896 @default.
• W4387373670 creator A5007406600 @default.
• W4387373670 creator A5009883205 @default.
• W4387373670 creator A5010194903 @default.
• W4387373670 creator A5011410890 @default.
• W4387373670 creator A5011537123 @default.
• W4387373670 creator A5012164681 @default.
• W4387373670 creator A5015410865 @default.
• W4387373670 creator A5020592901 @default.
• W4387373670 creator A5021304034 @default.
• W4387373670 creator A5021613819 @default.
• W4387373670 creator A5021692248 @default.
• W4387373670 creator A5025758778 @default.
• W4387373670 creator A5028208814 @default.
• W4387373670 creator A5028843362 @default.
• W4387373670 creator A5030861029 @default.
• W4387373670 creator A5031506388 @default.
• W4387373670 creator A5032257173 @default.
• W4387373670 creator A5033864520 @default.
• W4387373670 creator A5037061343 @default.
• W4387373670 creator A5037352813 @default.
• W4387373670 creator A5040159612 @default.
• W4387373670 creator A5040937059 @default.
• W4387373670 creator A5042103043 @default.
• W4387373670 creator A5043993555 @default.
• W4387373670 creator A5045383148 @default.
• W4387373670 creator A5046528783 @default.
• W4387373670 creator A5046701855 @default.
• W4387373670 creator A5048384208 @default.
• W4387373670 creator A5048963628 @default.
• W4387373670 creator A5049397551 @default.
• W4387373670 creator A5050652807 @default.
• W4387373670 creator A5054849631 @default.
• W4387373670 creator A5054957629 @default.
• W4387373670 creator A5055249050 @default.
• W4387373670 creator A5055984684 @default.
• W4387373670 creator A5056524837 @default.
• W4387373670 creator A5057633267 @default.
• W4387373670 creator A5060530339 @default.
• W4387373670 creator A5061298382 @default.
• W4387373670 creator A5061553294 @default.
• W4387373670 creator A5064522637 @default.
• W4387373670 creator A5066053082 @default.
• W4387373670 creator A5066541504 @default.
• W4387373670 creator A5067588216 @default.
• W4387373670 creator A5068090163 @default.
• W4387373670 creator A5068447836 @default.
• W4387373670 creator A5068449664 @default.
• W4387373670 creator A5068717219 @default.
• W4387373670 creator A5070399901 @default.
• W4387373670 creator A5070533035 @default.
• W4387373670 creator A5071349296 @default.
• W4387373670 creator A5072722683 @default.
• W4387373670 creator A5073845462 @default.
• W4387373670 creator A5076113449 @default.
• W4387373670 creator A5078378260 @default.
• W4387373670 creator A5082264743 @default.
• W4387373670 creator A5083350865 @default.
• W4387373670 creator A5084924297 @default.
• W4387373670 creator A5086777608 @default.
• W4387373670 creator A5087006050 @default.
• W4387373670 creator A5087029979 @default.
• W4387373670 creator A5090838019 @default.
• W4387373670 date "2023-10-05" @default.
• W4387373670 modified "2023-10-16" @default.
• W4387373670 title "The consolidated European synthesis of CO₂ emissions and removals for the European Union and United Kingdom: 1990–2020" @default.
• W4387373670 cites W1264638184 @default.
• W4387373670 cites W1533016475 @default.
• W4387373670 cites W1600897084 @default.
• W4387373670 cites W1606803730 @default.
• W4387373670 cites W1768510005 @default.
• W4387373670 cites W1774242947 @default.
• W4387373670 cites W1847281332 @default.
• W4387373670 cites W1879095416 @default.
• W4387373670 cites W1965804720 @default.
• W4387373670 cites W1972132876 @default.
• W4387373670 cites W1974959374 @default.
• W4387373670 cites W1975450074 @default.
• W4387373670 cites W1981399283 @default.
• W4387373670 cites W1982627164 @default.
• W4387373670 cites W1983075738 @default.
• W4387373670 cites W1987807993 @default.
• W4387373670 cites W1989668498 @default.
• W4387373670 cites W1990542933 @default.
• W4387373670 cites W1994499934 @default.
• W4387373670 cites W2001309087 @default.
• W4387373670 cites W2004913596 @default.
• W4387373670 cites W2009163215 @default.
• W4387373670 cites W2013214870 @default.
• W4387373670 cites W2017262766 @default.
• W4387373670 cites W2022349091 @default.
• W4387373670 cites W2026785886 @default.
• W4387373670 cites W2028807781 @default.
• W4387373670 cites W2033355897 @default.

• next