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Cambios permanentes en el ciclo global del agua
1Department of Computational Hydrosystems, UFZHelmholtz Centre for Environmental Research, Leipzig, Germany.
Resumen
Decenas de años de datos de almacenamiento de agua terrestre muestran una disminución clara e irreversible de la humedad del suelo. Esta tendencia a largo plazo pone de relieve los cambios críticos en los recursos hídricos mundiales.
Área de la Ciencia:
- Ciencias de la Tierra
- Ciencias del medio ambiente
- Hidrología
Sus antecedentes:
- El almacenamiento de agua terrestre (TWS) es un componente crítico del ciclo del agua de la Tierra.
- La comprensión de las tendencias a largo plazo en el SGT es esencial para la gestión de los recursos hídricos y las evaluaciones de impacto del cambio climático.
Objetivo del estudio:
- Para analizar décadas de cambios en el almacenamiento de agua terrestre.
- Identificar las tendencias a largo plazo en los niveles de humedad del suelo.
Principales métodos:
- Se utilizaron datos de gravimetría por satélite (por ejemplo, GRACE/GRACE-FO) que abarcan varias décadas.
- Aplicó técnicas avanzadas de análisis de series temporales a los datos del TWS.
Principales resultados:
- Se observó una disminución estadísticamente significativa e irreversible en la humedad global del suelo durante varias décadas.
- Variaciones regionales identificadas en la velocidad y magnitud de la disminución de la humedad del suelo.
Conclusiones:
- Los hallazgos indican una tendencia persistente a la sequía en los ecosistemas terrestres.
- Esta disminución irreversible de la humedad del suelo tiene profundas implicaciones para la agricultura, la disponibilidad de agua y la estabilidad del ecosistema.
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