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Variabilidad interanual e interdecadal en 335 años de las temperaturas del centro de Inglaterra
Resumen
Los modelos climáticos muestran las oscilaciones oceánicas. El análisis del registro de Temperatura de Inglaterra Central (CET) revela ciclos climáticos de 7 a 25 años, lo que ayuda a la predicción climática a corto plazo.
Área de la Ciencia:
- Ciencias del clima Ciencias del clima Ciencias del clima
- Paleoclimatología Paleoclimatología
- Oceanografía La oceanografía es la oceanografía.
Sus antecedentes:
- Comprender la variabilidad natural del clima es crucial para una predicción precisa del cambio climático.
- Los modelos de circulación oceánica exhiben oscilaciones de baja frecuencia, incluidas las corrientes termohalinas y las impulsadas por el viento.
- Los registros climáticos instrumentales a largo plazo son esenciales para validar el comportamiento del modelo climático.
Objetivo del estudio:
- Para identificar y analizar las oscilaciones climáticas dentro del registro de temperatura de Inglaterra Central (CET).
- Para validar el comportamiento oscilatorio predicho por los modelos de circulación oceánica.
- Proporcionar una predicción estadística de las tendencias de temperatura a corto plazo basadas en ciclos identificados.
Principales métodos:
- El análisis de espectro singular (SSA, por sus siglas en inglés) se aplicó al conjunto de datos de 335 años de Temperatura de Inglaterra Central (CET, por sus siglas en inglés).
- Identificación de las oscilaciones climáticas con períodos interanuales (7-8 años) e interdecenales (15, 25 años).
- Predicción estadística de la variabilidad futura de la temperatura basada en patrones oscilatorios identificados.
Principales resultados:
- El análisis reveló importantes oscilaciones climáticas en el registro CET.
- Es probable que las oscilaciones identificadas estén relacionadas con los patrones de circulación impulsados por el viento del Atlántico Norte y los patrones de circulación termohalina.
- Las predicciones estadísticas indican una disminución de la temperatura hacia el final de la década actual, seguida de un aumento a mediados de la década de 2030.
Conclusiones:
- El registro CET apoya la existencia de oscilaciones climáticas de baja frecuencia.
- Estas oscilaciones están asociadas con los principales sistemas de circulación oceánica del Atlántico Norte.
- Las tendencias de temperatura a corto plazo se pueden predecir estadísticamente utilizando estos ciclos climáticos identificados.
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