Video Experimental Relacionado

Updated: Nov 6, 2025

Using Generative Art to Convey Past and Future Climate Transitions

Using Generative Art to Convey Past and Future Climate Transitions

Published on: March 31, 2023

El Acuerdo de París sobre el clima y el futuro aumento del nivel del mar desde la Antártida

Robert M DeConto¹, David Pollard², Richard B Alley^2,3

¹Department of Geosciences, University of Massachusetts Amherst, Amherst, MA, USA. deconto@geo.umass.edu.

|May 6, 2021

Resumen

Limitar el calentamiento global a 2 grados centígrados evita una rápida pérdida de hielo en la Antártida. Sin embargo, exceder este objetivo corre el riesgo de desencadenar un retroceso irreversible de las capas de hielo y acelerar el aumento global del nivel del mar.

Área de la Ciencia:

Ciencias del clima
Glaciología
El aumento del nivel del mar

Sus antecedentes:

El Acuerdo de París tiene como objetivo limitar el calentamiento global a 1,5-2°C por encima de los niveles preindustriales.
Las emisiones de gases de efecto invernadero tienen un impacto significativo en el nivel medio global del mar (GMSL) a través de la expansión térmica y la pérdida de hielo terrestre.
La capa de hielo antártica (AIS) es un importante contribuyente al GMSL, con una aceleración de la pérdida de hielo y regiones vulnerables a una rápida retirada.

Objetivo del estudio:

Investigar el impacto de los objetivos de temperatura del Acuerdo de París en la estabilidad de la capa de hielo antártica.
Evaluar la posibilidad de que un calentamiento superior a 2 °C provoque una inestabilidad irreversible de las capas de hielo y acelere el aumento del nivel del mar.

Principales métodos:

Utilizó un modelo de capa de hielo calibrado por observación.
Simulado varios escenarios de calentamiento global, incluidos los alineados con los objetivos del Acuerdo de París y las políticas actuales.
Analizó la pérdida de hielo antártico resultante y su contribución al GMSL.

Principales resultados:

Limitar el calentamiento a 2°C o menos resulta en una pérdida continua de hielo antártico a las tasas actuales.
El calentamiento superior a 2 ° C (por ejemplo, 3 ° C) conduce a un aumento abrupto de la pérdida de hielo después de 2060, contribuyendo ~ 0,5 cm / año al GMSL para 2100.
El adelgazamiento y la pérdida de la plataforma de hielo inician un retroceso imparable durante siglos, independientemente de los esfuerzos de mitigación.

Conclusiones:

El exceso de los objetivos de temperatura del Acuerdo de París corre el riesgo de desencadenar una pérdida rápida e irreversible del hielo antártico.
Esta pérdida de hielo acelerará significativamente el aumento global del nivel del mar.
El cumplimiento urgente de los objetivos climáticos es crucial para evitar un aumento catastrófico del nivel del mar desde la Antártida.

Más Videos Relacionados

Author Spotlight: Unveiling Plankton Response to Climate Change Through Time-Series Data and Artistic Expression

Author Spotlight: Unveiling Plankton Response to Climate Change Through Time-Series Data and Artistic Expression

Published on: July 28, 2023

Assessing Intertidal Populations of the Invasive European Green Crab

Assessing Intertidal Populations of the Invasive European Green Crab

Published on: September 16, 2020

Videos de Conceptos Relacionados

Global Climate Change

Global Climate Change

Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.

What is Climate?

What is Climate?

Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.

The Carbon Cycle

The Carbon Cycle

Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.

Radiation: Applications

Radiation: Applications

The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...

Effect of Sea Water on Concrete

Effect of Sea Water on Concrete

Concrete exposed to seawater can undergo degradation like the dissolution of ettringite and gypsum, increasing the material's porosity and decreasing its strength. In contrast, the crystallization of salts within the concrete's pores can cause expansion, particularly above the waterline where evaporation occurs. Nonetheless, this expansion only happens when seawater, enabled by the concrete's permeability, manages to infiltrate the structure.
Concrete in areas between tide marks,...

Clausius-Clapeyron Equation

Clausius-Clapeyron Equation

The equilibrium between a liquid and its vapor depends on the temperature of the system; a rise in temperature causes a corresponding rise in the vapor pressure of its liquid. The Clausius-Clapeyron equation gives the quantitative relation between a substance’s vapor pressure (P) and its temperature (T); it predicts the rate at which vapor pressure increases per unit increase in temperature.