Video Experimental Relacionado
Updated: Jun 8, 2026
07:32
Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.
Published on: June 4, 2021
CO2 atmosférico: el botón de control principal que rige la temperatura de la Tierra
Andrew A Lacis1, Gavin A Schmidt, David Rind
1NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025, USA. andrew.a.lacis@nasa.gov
Science (New York, N.Y.)
|October 16, 2010
Resumen
El dióxido de carbono (CO2) es el gas de efecto invernadero más importante, esencial para mantener la temperatura de la Tierra. Sin CO2 y otros gases no condensados, el planeta se congelaría.
Área de la Ciencia:
- Ciencias del clima Ciencias del clima Ciencias del clima Ciencias del clima
- Química de la atmósfera química de la atmósfera
- Ciencias del Sistema Terrestre Ciencias del Sistema Terrestre
Sus antecedentes:
- Los gases de efecto invernadero (GEI) son críticos para regular la temperatura de la Tierra.
- El vapor de agua, aunque abundante, es un gas condensador y actúa como una retroalimentación, no como un conductor primario.
- Los GEI no condensados proporcionan el calentamiento fundamental necesario para que el vapor de agua permanezca en la atmósfera.
Objetivo del estudio:
- Aclarar el papel principal del dióxido de carbono (CO2) como el gas de efecto invernadero más significativo para el clima.
- Explicar los mecanismos físicos que diferencian el CO2 del vapor de agua en la regulación de la temperatura atmosférica.
- Para resaltar la contribución esencial de los gases de efecto invernadero no condensados al efecto invernadero terrestre.
Principales métodos:
- Análisis de la evidencia física con respecto a las propiedades de los gases atmosféricos.
- Examen de las contribuciones de forzamiento radiativo de diferentes gases de efecto invernadero.
- Evaluación de los procesos de retroalimentación que involucran vapor de agua y nubes.
Principales resultados:
- El dióxido de carbono (CO2) se identifica como el gas de efecto invernadero más importante para el clima.
- A diferencia del vapor de agua, el CO2 no se precipita fuera de la atmósfera a las temperaturas actuales.
- Los gases de efecto invernadero no condensados, incluido el CO2, representan el 25% del efecto invernadero y estabilizan las condiciones atmosféricas.
Conclusiones:
- El forzamiento radiativo del CO2 y otros GHG no condensados es indispensable para mantener el clima actual de la Tierra.
- Sin estos gases, el efecto invernadero de la Tierra disminuiría, lo que llevaría a un planeta congelado.
- La naturaleza no condensante del CO2 es clave para su papel en el mantenimiento del sistema climático.
Más Videos Relacionados
07:46Temperature Response of Soil Organic Matter Decomposition Rates: Construction and Applications of a Temperature Gradient Block
Published on: January 30, 2026
10:19A CO2 Concentration Gradient Facility for Testing CO2 Enrichment and Soil Effects on Grassland Ecosystem Function
Published on: November 21, 2015
Videos de Conceptos Relacionados
01:50Global 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.
01:27Microbes and Climate Change
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
01:14The 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.
01:23Physiological Control of Respiration
Introduction
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
01:16What 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.
01:28Bioreactor Controls-I
Maintaining optimal conditions within fermenters is essential for maximizing microbial productivity and ensuring process efficiency. This lesson focuses on key parameters—temperature, foam, pH, carbon dioxide, oxygen, and pressure—and their precise measurement and control strategies in fermentation systems.Temperature ControlTemperature regulation is critical due to the exothermic nature of many fermentation processes. In small laboratory fermenters, temperature is commonly monitored using...