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Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses
Published on: October 21, 2016
Compensaciones regionales de 14CO2 en la troposfera: magnitud, mecanismos y consecuencias
B Kromer1, S W Manning, P I Kuniholm
1Heidelberger Akademie der Wissenschaften, Institut für Umweltphysik der Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany. bernd.kromer@iup.uni-heidelberg.de
Science (New York, N.Y.)
|December 18, 2001
Resumen
La datación por radiocarbono se basa en el dióxido de carbono (CO2) atmosférico constante. Este estudio encontró variaciones regionales de CO2, lo que afecta la precisión de la datación y la investigación del paleoclima.
Área de la Ciencia:
- Paleoclimatología Paleoclimatología
- La datación por radiocarbono fue
- Ciencias de la atmósfera Ciencias atmosféricas.
Sus antecedentes:
- Los métodos de datación por radiocarbono asumen niveles uniformes de dióxido de carbono troposférico (CO2) en el hemisferio norte.
- Estudios anteriores han apoyado generalmente esta suposición para las latitudes bajas a medias.
Objetivo del estudio:
- Investigar las posibles variaciones regionales en los niveles troposféricos (14) de CO2).
- Evaluar el impacto de estas variaciones en la datación por radiocarbono y las reconstrucciones del paleoclima.
Principales métodos:
- Comparación de los datos del anillo del árbol (14) C del sur de Alemania y Anatolia.
- Análisis de las compensaciones regionales a corto plazo (14) CO ((2)).
Principales resultados:
- Los datos de los anillos de los árboles generalmente apoyan la suposición de una troposfera uniforme, pero revelan importantes compensaciones regionales a corto plazo.
- Estos desplazamientos están vinculados a un ciclo estacional (14) CO(2) mejorado, influenciado por el flujo estratosférico (14) C durante los períodos de baja actividad magnética solar y enfriamiento atmosférico.
Conclusiones:
- A corto plazo pueden ocurrir variaciones regionales, desafiando la suposición de homogeneidad.
- La comprensión de estos desplazamientos es crucial para estudios paleoclimáticos precisos y datación arqueológica de alta resolución.
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