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Climatología: amenaza de pérdida de la capa de hielo de Groenlandia
Jonathan M Gregory1, Philippe Huybrechts, Sarah C B Raper
1Centre for Global Atmospheric Modelling, Department of Meteorology, University of Reading, Reading RG6 6BB, UK. j.m.gregory@reading.ac.uk
Nature
|April 9, 2004
Resumen
Groenlandia: Groenlandia es una de las islas más altas del mundo.
Área de la Ciencia:
- Ciencias del clima Ciencias del clima Ciencias del clima Ciencias del clima
- Glaciología glaciología.
- Ciencias ambientales Ciencias ambientales.
Sus antecedentes:
- El calentamiento global representa una amenaza significativa para las capas de hielo.
- La capa de hielo de Groenlandia es particularmente vulnerable al aumento de las temperaturas.
Objetivo del estudio:
- Para evaluar el impacto del calentamiento climático en la capa de hielo de Groenlandia.
- Para determinar el umbral de temperatura para una pérdida significativa de hielo.
- Para proyectar el futuro aumento del nivel del mar debido al derretimiento del hielo.
Principales métodos:
- Análisis de modelos climáticos y proyecciones de temperatura.
- Estimación del aumento potencial del nivel del mar debido al derretimiento de las capas de hielo.
Principales resultados:
- Un calentamiento de aproximadamente 3°C podría llevar a la eliminación de la capa de hielo de Groenlandia.
- Este evento podría resultar en un aumento global del nivel del mar de hasta 7 metros en 1.000 años.
- Las concentraciones de gases de efecto invernadero pueden alcanzar niveles críticos antes de 2100.
Conclusiones:
- La capa de hielo de Groenlandia se enfrenta a un derretimiento irreversible bajo los escenarios de calentamiento proyectados.
- El aumento significativo del nivel global del mar es una consecuencia probable de las continuas emisiones de gases de efecto invernadero.
- Se necesita una acción climática urgente para mitigar estos riesgos.
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