A System Reanalysis of the Current Greenhouse Gases Budget of Terrestrial Ecosystems in Russia

20965 6 112058 2 338499 document 112058 Global Biogeochemical Cycles - 2025 - Shvidenko - A System Reanalysis of the Current Greenhouse Gases Budget of Terrestrial.pdf application/pdf 2cdb51d2b2a6b9cd1ad812267e99fda8 MD5 2771658 2025-12-09 08:53:09 https://pure.iiasa.ac.at/id/eprint/20965/1/Global%20Biogeochemical%20Cycles%20-%202025%20-%20Shvidenko%20-%20A%20System%20Reanalysis%20of%20the%20Current%20Greenhouse%20Gases%20Budget%20of%20Terrestrial.pdf 20965 1 1 application/pdf text en public cc_by_4

Global Biogeochemical Cycles - 2025 - Shvidenko - A System Reanalysis of the Current Greenhouse Gases Budget of Terrestrial.pdf

published 112059 1 338502 document 112059 indexcodes.txt text/x-c 67740a44019ddf18905feb13d42206f6 MD5 32063 2025-12-09 08:55:25 https://pure.iiasa.ac.at/id/eprint/20965/2/indexcodes.txt 20965 2 2 text/x-c other Generate index codes conversion from text to indexcodes en public

indexcodes.txt

lightbox.jpg

preview.jpg

medium.jpg

small.jpg

http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/112058 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/112058 http://eprints.org/relation/issmallThumbnailVersionOf https://pure.iiasa.ac.at/id/document/112058 archive 353 disk0/00/02/09/65 2025-11-04 14:44:47 2025-12-09 08:53:09 2025-11-04 14:44:47 article show Shvidenko A. 1487 Ciais P. Patra P.K. Bastos A. Maksyutov S. Lauerwald R. Poulter B. Belikov D. Chandra N. Glagolev M. Terentieva I. Karelin D. Kurbatova J. Kurganova I. Romanovskaya A. Korotkov V. Mukhortova L. Prokushkin A. Gustafson E. Kraxner F. 7904 Mamkin V. Lukina N. Krasovskiy A. 8266 0000-0003-0940-9366 Vaganov E. Shchepashchenko D. 7435 0000-0002-7814-4990 A System Reanalysis of the Current Greenhouse Gases Budget of Terrestrial Ecosystems in Russia pub ASA NODES BNR AFE This study synthesizes the budgets of three greenhouse gases (GHG, namely CO2, CH4, N2O) for Russia over two decades (2000–2009 and 2010–2019) using bottom-up and top-down approaches, as part of the Regional Carbon Cycle Assessment and Processes, Phase 2 (RECCAP2). Published estimates of natural sources and sinks of these GHGs in Russia vary widely. Here, bottom-up estimates are based on eddy covariance measurements, the Integrated Land Information System of Russia (ILIS-LEA), field data, Dynamic Global Vegetation Models (DGVMs), and regional models. The bottom-up approach estimated Net Ecosystem Exchange (NEE) at −0.64 ± 0.17 and −0.57 ± 0.14 Pg C yr−1, for decades 2000–2009 and 2010–2019, respectively. Top-down atmospheric inversions provide similar NEE carbon flux estimates with comparable uncertainties at −0.56 ± 0.26 and −0.73 ± 0.27 Pg C yr−1 for the two decades. Differences between these approaches arise from distinct flux components and structural assumptions. ILIS-LEA indicates a slightly declining carbon sink in 2010–2019, driven by increased disturbances. In contrast, DGVMs suggest a stable carbon sink over both decades but they do not fully simulate the effects of disturbances and recovery. Top-down inversions reveal an increasing CO2 sink, suggesting with additional observed constraints on biomass carbon increment that soil and non-forest biomes absorb more carbon than predicted by DGVMs and ILIS-LEA models. A Bayesian averaging approach estimates natural ecosystems acting as a GHG sink with a land-to-atmosphere flux of −1.55 ± 0.91 and −1.47 ± 0.82 Pg CO2-eq. yr−1. Accounting for both natural and anthropogenic emissions across the Russian territory shifts the net GHG balance to a source around 1.2 Pg CO2-eq. yr−1. 2025-10-27 published AGU Publications doi:10.1029/2025GB008540 281 165 164 279 public Global Biogeochemical Cycles 39 10 e2025GB008540 TRUE 08866236 info:eu-repo/semantics/article