Video Experimental Relacionado
Updated: Jul 17, 2026
09:55
Surface Renewal: An Advanced Micrometeorological Method for Measuring and Processing Field-Scale Energy Flux Density Data
Published on: December 12, 2013
Memoria estratosférica y habilidad de pronósticos meteorológicos de largo alcance
Mark P Baldwin1, David B Stephenson, David W J Thompson
1Northwest Research Associates, 14508 NE 20th Street, Bellevue, WA, 98007, USA.
Science (New York, N.Y.)
|August 2, 2003
Resumen
Desarrollamos un modelo estadístico para pronósticos de largo alcance de la Oscilación Ártica (AO). La habilidad de pronóstico, especialmente en invierno, se basa en anomalías persistentes de la circulación estratosférica que influyen en la troposfera.
Área de la Ciencia:
- Ciencias de la atmósfera Ciencias atmosféricas.
- La dinámica del clima La dinámica del clima La dinámica del clima
- Meteorología Meteorología.
Sus antecedentes:
- La Oscilación Ártica (AO) es un patrón climático clave que influye en el clima del hemisferio norte.
- Predecir el AO en rangos extendidos sigue siendo un desafío.
Objetivo del estudio:
- Demostrar habilidad en el pronóstico a largo plazo de la media mensual de la Oscilación Ártica (AO).
- Para identificar los mecanismos que impulsan la previsibilidad de AO.
Principales métodos:
- Utilizó un modelo estadístico empírico.
- Analizó las anomalías de circulación persistentes en la estratosfera más baja.
- Comparación de la predictibilidad del Ártico y del Hemisferio Sur.
Principales resultados:
- Se demostró una habilidad significativa en los pronósticos AO de rango extendido.
- La habilidad de pronóstico es mayor durante el invierno boreal.
- La predictibilidad depende de las anomalías de circulación persistentes por encima de la tropopausa.
Conclusiones:
- Las anomalías estratosféricas persistentes son cruciales para la previsibilidad de AO.
- Es probable que estas anomalías influyan en la troposfera a través de cambios de onda en la troposfera superior.
- Los hallazgos mejoran la comprensión de las teleconexiones atmosféricas y la predicción del clima.
Más Videos Relacionados
Videos de Conceptos Relacionados
01:07What is Weather?
Overview
01:26Higher Mental Functions of Brain: Learning and Memory
Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or playing an...
01:23System of Memory
Memory is categorized into three major systems: sensory memory, short-term memory (STM), and long-term memory (LTM). These systems differ in their capacity and the duration for which they can hold information. Sensory memory captures raw sensory input from the environment, holding it for just a few seconds or less. For example, on hearing a brief, loud sound, like a car horn honking, the sound seems to linger in the mind for a moment even after it stops. This is an instance of sensory memory...
01:22Chunking and Rehearsal in Sensory Memory
Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of information more...
01:18Long-Term Memory
Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...
01:24Implicit Memories
Implicit memories, also known as non-declarative memories, are long-term memories that function outside of conscious awareness. These memories influence behavior and skills without explicit knowledge. This type of memory is evident in tasks like playing tennis, snowboarding, and texting. Implicit memory has three subsystems: procedural memory, conditioning, and priming. This type of memory is essential in various activities, from everyday tasks to specialized skills.
One key aspect of implicit...
One key aspect of implicit...