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Control externo de la temperatura del siglo XX por fuerzas naturales y antropogénicas
Resumen
Tanto las actividades naturales como las humanas tuvieron un impacto significativo en los cambios de temperatura del siglo XX. Los modelos climáticos muestran que los factores externos influyen fuertemente en las temperaturas globales y terrestres, y se prevé que el calentamiento continúe.
Área de la Ciencia:
- Ciencias del clima ciencia del clima.
- Ciencias de la atmósfera ciencia atmosférica.
- Oceanografía La oceanografía es la oceanografía.
Sus antecedentes:
- Los cambios de temperatura del siglo XX están influenciados por varios factores.
- Comprender las contribuciones relativas de los forzamientos naturales y antropogénicos es crucial para el modelado climático.
Objetivo del estudio:
- Para comparar los datos de observación con las simulaciones de un modelo de circulación general acoplado océano-atmósfera.
- Determinar las contribuciones de los factores naturales y antropogénicos a las variaciones de temperatura del siglo XX.
Principales métodos:
- Utilizando un modelo de circulación general acoplado océano-atmósfera.
- Comparar las simulaciones de modelos con la media global observada y los datos de temperatura terrestre a gran escala.
- Analizando las variaciones de temperatura a escala multidecenal y decadal.
Principales resultados:
- El modelo simula con éxito la media global y las variaciones de temperatura de la tierra.
- Tanto los factores naturales como los antropogénicos contribuyeron significativamente a los cambios de temperatura del siglo XX.
- Los forzamientos externos explican más del 80% de las variaciones de temperatura media global de varias décadas y más del 60% de las variaciones de temperatura terrestre de 10 a 50 años.
Conclusiones:
- La respuesta climática a gran escala está fuertemente influenciada por factores externos.
- Se prevé que el calentamiento global antropogénico continúe bajo escenarios de emisiones estándar.
- Los hallazgos destacan el papel significativo de las actividades humanas en el cambio climático contemporáneo.
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