{"id":2521,"date":"2020-10-15T11:28:41","date_gmt":"2020-10-15T14:28:41","guid":{"rendered":"http:\/\/www.ccst.inpe.br\/lagee\/?p=2521"},"modified":"2020-10-15T11:28:42","modified_gmt":"2020-10-15T14:28:42","slug":"regional-atmospheric-co2-inversion-reveals-seasonal-and-geographic-differences-in-amazon-net-biome-exchange","status":"publish","type":"post","link":"https:\/\/www.ccst.inpe.br\/lagee\/regional-atmospheric-co2-inversion-reveals-seasonal-and-geographic-differences-in-amazon-net-biome-exchange\/","title":{"rendered":"Regional atmospheric CO2 inversion reveals seasonal and geographic differences in Amazon net biome exchange."},"content":{"rendered":"\n<p><strong>Autores:                                                                                                                    <\/strong>Alden, C.B.; Miller, J.B.; Gatti, L.V.; Gloor, M.; Guan, K.; Michalak, A.M.; Van Der Laan-Luijkx, I.T.; Touma, D.; Andrews, A.; Basso, L.S.; Correia, C.S.C.; Domingues, L.G.; Joiner, J.; Krol, M.C.; Lyapustin, A.I.; Peters, W.; Shiga, Y.P.; Thoning, K.; Van Der Velde, I.R.; Van Leeuwen, T.T.; Yadav, V.; Diffenbaugh, N.S. <\/p>\n\n\n\n<p><strong>Link do artigo: <\/strong><a rel=\"noreferrer noopener\" aria-label=\" (abre numa nova aba)\" href=\"https:\/\/onlinelibrary.wiley.com\/doi\/abs\/10.1111\/gcb.13305\" target=\"_blank\">https:\/\/onlinelibrary.wiley.com\/doi\/abs\/10.1111\/gcb.13305<\/a> <\/p>\n\n\n\n<p><strong>Revista: <\/strong>Global Change Biology, v. 23, p. 1-17, 2016.<\/p>\n\n\n\n<p><strong>Abstract:<\/strong> <br>Understanding tropical rainforest carbon exchange and its response to heat and drought is critical for quantifying the effects of climate change on tropical ecosystems, including global climate\u2013carbon feedbacks. Of particular importance for the global carbon budget is net biome exchange of CO<sub>2<\/sub>\u00a0with the atmosphere (NBE), which represents nonfire carbon fluxes into and out of biomass and soils. Subannual and sub\u2010Basin Amazon NBE estimates have relied heavily on process\u2010based biosphere models, despite lack of model agreement with plot\u2010scale observations. We present a new analysis of airborne measurements that reveals monthly, regional\u2010scale (~1\u20138\u00a0\u00d7\u00a010<sup>6<\/sup>\u00a0km<sup>2<\/sup>) NBE variations. We develop a regional atmospheric CO<sub>2<\/sub>\u00a0inversion that provides the first analysis of geographic and temporal variability in Amazon biosphere\u2013atmosphere carbon exchange and that is minimally influenced by biosphere model\u2010based first guesses of seasonal and annual mean fluxes. We find little evidence for a clear seasonal cycle in Amazon NBE but do find NBE sensitivity to aberrations from long\u2010term mean climate. In particular, we observe increased NBE (more carbon emitted to the atmosphere) associated with heat and drought in 2010, and correlations between wet season NBE and precipitation (negative correlation) and temperature (positive correlation). In the eastern Amazon, pulses of increased NBE persisted through 2011, suggesting legacy effects of 2010 heat and drought. We also identify regional differences in postdrought NBE that appear related to long\u2010term water availability. We examine satellite proxies and find evidence for higher gross primary productivity (GPP) during a pulse of increased carbon uptake in 2011, and lower GPP during a period of increased NBE in the 2010 dry season drought, but links between GPP and NBE changes are not conclusive. These results provide novel evidence of NBE sensitivity to short\u2010term temperature and moisture extremes in the Amazon, where monthly and sub\u2010Basin estimates have not been previously available. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Autores: Alden, C.B.; Miller, J.B.; Gatti, L.V.; Gloor, M.; Guan, K.; Michalak, A.M.; Van Der Laan-Luijkx, I.T.; Touma, D.; Andrews, A.; Basso, L.S.; Correia, C.S.C.; Domingues, L.G.; Joiner, J.; Krol, M.C.; Lyapustin, A.I.; Peters, W.; Shiga, Y.P.; Thoning, K.; Van Der Velde, I.R.; Van Leeuwen, T.T.; Yadav, V.; Diffenbaugh, N.S. Link do artigo: https:\/\/onlinelibrary.wiley.com\/doi\/abs\/10.1111\/gcb.13305 Revista: [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-2521","post","type-post","status-publish","format-standard","hentry","category-publicacoes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Regional atmospheric CO2 inversion reveals seasonal and geographic differences in Amazon net biome exchange. - Projeto Lagee<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ccst.inpe.br\/lagee\/regional-atmospheric-co2-inversion-reveals-seasonal-and-geographic-differences-in-amazon-net-biome-exchange\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Regional atmospheric CO2 inversion reveals seasonal and geographic differences in Amazon net biome exchange. - Projeto Lagee\" \/>\n<meta property=\"og:description\" content=\"Autores: Alden, C.B.; Miller, J.B.; Gatti, L.V.; Gloor, M.; Guan, K.; Michalak, A.M.; Van Der Laan-Luijkx, I.T.; Touma, D.; Andrews, A.; Basso, L.S.; Correia, C.S.C.; Domingues, L.G.; Joiner, J.; Krol, M.C.; Lyapustin, A.I.; Peters, W.; Shiga, Y.P.; Thoning, K.; Van Der Velde, I.R.; Van Leeuwen, T.T.; Yadav, V.; Diffenbaugh, N.S. 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