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Balance de masas de las capas de hielo polar
1Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 300-235, Pasadena, CA 91109, USA. eric@adelie.jpl.nasa.gov
Resumen
Las capas de hielo de Groenlandia y la Antártida Occidental están perdiendo masa, mientras que la capa de hielo de la Antártida Oriental está perdiendo masa.
Área de la Ciencia:
- Glaciología y ciencia polar.
- La investigación sobre el cambio climático investiga el cambio climático.
- Ciencia del sistema de la Tierra Ciencia del sistema de la Tierra
Sus antecedentes:
- Comprender el equilibrio de masa de la capa de hielo polar es crucial para predecir el aumento del nivel del mar.
- Las evaluaciones anteriores indicaron complejas variaciones regionales en el comportamiento de las capas de hielo.
Objetivo del estudio:
- Para determinar el balance de masas actual de las principales capas de hielo polares.
- Para identificar regiones de pérdida o ganancia significativa de masa de hielo.
- Para resaltar áreas con cambios rápidos e inexplicables.
Principales métodos:
- Análisis de datos recientes sobre el balance de masa de la capa de hielo.
- Monitoreo del adelgazamiento y engrosamiento de la capa de hielo.
- Estudios de observación de la dinámica del hielo en sectores clave.
Principales resultados:
- La capa de hielo de Groenlandia está experimentando adelgazamiento cerca de la costa y pérdida de masa.
- La capa de hielo de la Antártida Occidental muestra un adelgazamiento general, con variaciones regionales.
- El balance de masa de la capa de hielo antártica oriental sigue siendo incierto.
- Se observan cambios rápidos en el sureste de Groenlandia, en la ensenada del mar de Amundsen y en la península antártica.
Conclusiones:
- Las capas de hielo polares están respondiendo activamente a los cambios ambientales.
- La pérdida significativa de masa de Groenlandia y la Antártida Occidental contribuye al aumento del nivel del mar.
- Procesos no identificados están impulsando rápidos cambios en las regiones vulnerables de la Antártida y Groenlandia.
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