Aplicação de isótopos estáveis de carbono no estudo das mudanças climáticas e ambientais

Autor: Valdir Felipe Novello, Marília de Carvalho Campos, Cristiano Mazur Chiessi, Gustavo Macedo de Paula-Santos, Luiz Carlos Ruiz Pessenda, Taciana Gomes, Giselle Utida, Francisco William da Cruz

Publikováno v: Derbyana, Vol 42 (2021)

O carbono está presente em uma ampla variedade de reservatórios naturais como rochas, solos, oceanos e atmosfera e é um dos principais componentes dos organismos vivos. As razões entre os seus dois isótopos mais abundantes 12C e 13C, descritas p

Externí odkaz: https://doaj.org/article/7412c88bdcee439ea3f0a5584aa37fb7

Development and characterization of a new in-house reference material for stable carbon and oxygen isotopes analyses

Autor: Alyne Barros Machado Lopes, Patricia Junia Viana, Henning Kuhnert, Stefano Crivellari, Cristiano Mazur Chiessi, Marília de Carvalho Campos, Francisco W. Cruz

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

The precision and accuracy of an isotope ratio mass spectrometry (IRMS) laboratory and the quality of its scientific output directly depend on the quality of the reference materials used for calibration. However, the specification and characterizatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::510782ed83a9c2d657d1bc65dffc48cf
https://doi.org/10.1039/d1ja00030f

Meridional changes in the South Atlantic Subtropical Gyre during Heinrich Stadials

Autor: Cristiano Mazur Chiessi, Stefano Crivellari, Ana Luiza Spadano Albuquerque, Rodrigo Costa Portilho-Ramos, Stefan Mulitza, Tainã Marcos Lima Pinho, Rodrigo A. Nascimento, Marília de Carvalho Campos, André Bahr

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Scientific Reports

Subtropical ocean gyres play a key role in modulating the global climate system redistributing energy between low and high latitudes. A poleward displacement of the subtropical gyres has been observed over the last decades, but the lack of long-term

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91cef2e11d4fbde95e391185fd9a196b
https://doi.org/10.1038/s41598-021-88817-0

Variabilidade milenar no clima do leste da América do Sul e na circulação do oeste do Atlântico Sul durante os últimos 70.000 anos

Autor: Marília de Carvalho Campos

Publikováno v: Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP

During the last glacial and deglacial periods, the Earth experienced several abrupt millennial-scale climate change events, named Heinrich Stadials (HS) and Dansgaard-Oeschger events. The HS in particular are commonly attributed to reductions in the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13ab385902484bca11d3d600ef3d9f2f

δ13C decreases in the upper western South Atlantic during Heinrich Stadials 3 and 2

Autor: Stefan Mulitza, Henning Kuhnert, Marília de Carvalho Campos, Alberto R. Piola, Cristiano Mazur Chiessi, Ines Voigt

Publikováno v: Climate of the Past. 13:345-358

Abrupt millennial-scale climate change events of the last deglaciation (i.e. Heinrich Stadial 1 and the Younger Dryas) were accompanied by marked increases in atmospheric CO2 (CO2atm) and decreases in its stable carbon isotopic ratios (δ13C), i.e. �

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::92017efb5789858543b8abfa8f4022fc
https://doi.org/10.5194/cp-13-345-2017