Descripción del proyecto
Productividad biológica de oxígeno atmosférico ante el cambio climático abrupto
Comprender cómo responde la productividad biológica del oxígeno atmosférico (O2) al cambio climático abrupto a nivel mundial es fundamental para realizar predicciones del cambio climático y medioambiental futuro. La mala resolución temporal de los datos existentes ha conllevado que los estudios aborden sobre todo el cambio mundial en la productividad de O2 durante las transiciones glacial-interglaciar. El equipo del proyecto OXYPRO, financiado con fondos europeos, reconstruirá el cambio en la productividad primaria mundial durante los estadiales de Heinrich (HS, por sus siglas en inglés). Un evento HS es un cambio climático abrupto natural que está provocado por el colapso de las mesetas de hielo del hemisferio norte y la consiguiente liberación de agua de deshielo en el océano Atlántico Norte. Este proyecto se llevará a cabo en el Departamento de Física del Hielo, el Clima y la Tierra del Instituto Niels Bohr de la Universidad de Copenhague.
Objetivo
Atmospheric oxygen (O2) is an essential component for life. The global biological O2 productivity has changed with Earth's climate change and, at the same time, has affected to global biosphere. Therefore, understanding how global biological O2 productivity responds to abrupt climate change is important to project future climate and environment change. However, former studies have been focused on global O2 productivity change over the glacial-interglacial transitions, mainly due to insufficient temporal resolution of existing data. This project aims to reconstruct the global primary productivity change over the Heinrich Stadial (HS). HS events are naturally occuring abrupt climate changes in the last glacial triggered by abrupt input of glacial meltwater into the North Atlantic Ocean. In this project, a new high-resolution record of triple oxygen isotopes of air O2 and COS concentrations will be produced throughout the HS events 1 to 5 using polar ice cores. Then the major controls and mechanisms will be explored by a series of sensitivity experiments using climate models with different complexities. This project will be carried out at the section of Physics of Ice, Climate and Earth at Niels Bohr Institute (PICE, University of Copenhagen). PICE equips the state of art analytical instruments and has developed the novel methods to study trace gas and isotopes in ice cores. The supervisor is a world expert of the triple oxygen isotopes of air O2 in ice cores. This project plans a secondment to Laboratory for Sciences of Climate and Environment (LSCE, University of Paris Saclay) for sensitivity experiments using climate models. LSCE is a leading institution of paleoclimate modelling, which allows a better understanding of major control mechanisms of the past productivity change.
Ámbito científico
- natural sciencesearth and related environmental sciencespalaeontologypaleoclimatology
- social scienceseconomics and businesseconomicsproduction economicsproductivity
- natural sciencesearth and related environmental sciencesatmospheric sciencesmeteorologybiosphera
- natural sciencesearth and related environmental sciencesatmospheric sciencesclimatologyclimatic changes
Palabras clave
Programa(s)
Régimen de financiación
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)Coordinador
1165 Kobenhavn
Dinamarca