Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados ArchiMer (2) Autor Roychoudhury, Alakendra N. (2) Baker, Andrea (1) Chierici, Melissa (1) Fransson, Agneta (1) Joubert, Warren R. (1) Ogundare, Margaret Ojone (1) Pedentchouk, Nikolai (1) Routh, Joyanto (1) Mais... Palavra-chave Antarctic coast (1) Astrid Ridge (1) CO2 and biogeochemical drivers (1) Chlorophyll (1) Continental biomarkers (1) Holocene (1) Maud Rise (1) Oxygen saturation (1) Paleoclimatology (1) Peatland (1) Pleistocene (1) Sea ice (1) Southern Africa (1) Stable isotopes (1) Mais... Tipo do documento Text (2) Ano 2021 (1) 2017 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Climatic variability in Mfabeni peatlands (South Africa) since the late Pleistocene ArchiMer Baker, Andrea; Pedentchouk, Nikolai; Routh, Joyanto; Roychoudhury, Alakendra N.. It has been postulated that a bipolar seesaw interhemispheric mechanism dominated the relationship between the Northern and Southern hemisphere climates since the late Pleistocene. A key test for this proposition would be to undertake palaeoenvironmental studies on terrestrial archives in climatically sensitive regions. Southern Africa's contemporary C-3 and C-4 terrestrial plant distributions display a definitive geographical pattern dictated by different growing season rainfall and temperature zones; however, the region is generally archive poor due to its overall semi-arid climate and high relief topography. The Mfabeni peatland, with a basal age of c. 47 k yrs calibrated before present (kcal yr BP), is one of the oldest continuous coastal peat deposits... Tipo: Text Palavras-chave: Holocene; Pleistocene; Paleoclimatology; Southern Africa; Stable isotopes; Continental biomarkers; Peatland. Ano: 2017 URL: https://archimer.ifremer.fr/doc/00420/53176/83104.pdf Variability of Sea-Air Carbon Dioxide Flux in Autumn Across the Weddell Gyre and Offshore Dronning Maud Land in the Southern Ocean ArchiMer Ogundare, Margaret Ojone; Fransson, Agneta; Chierici, Melissa; Joubert, Warren R.; Roychoudhury, Alakendra N.. Sea surface fugacity of carbon dioxide (fCO2ssw) was measured across the Weddell gyre and the eastern sector in the Atlantic Southern Ocean in autumn. During the occupation between February and April 2019, the region of the study transect was a potential ocean CO2 sink. A net CO2 flux (FCO2) of −6.2 (± 8; sink) mmol m–2 d–1 was estimated for the entire study region, with the largest average CO2 sink of −10.0 (± 8) mmol m–2 d–1 in the partly ice-covered Astrid Ridge (AR) region near the coast at 68°S and −6.1 (± 8) mmol m–2d–1 was observed in the Maud Rise (MR) region. A CO2 sink was also observed south of 66°S in the Weddell Sea (WS). To assess the main drivers describing the variability of fCO2ssw, a correlation model using fCO2 and oxygen saturation was... Tipo: Text Palavras-chave: CO2 and biogeochemical drivers; Chlorophyll; Antarctic coast; Maud Rise; Astrid Ridge; Sea ice; Oxygen saturation. Ano: 2021 URL: https://archimer.ifremer.fr/doc/00676/78854/81155.pdf Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco