Name: how sunlight shapes daily weather
Uploaded: 2019-03-11T09:21:42.000Z
Duration: 1 min 7 s
Channel: JoVE

K12 Standards

north-carolina-k-12-science-standard-course-of-study

NC K-12 Science Standard Course of Study

9-12

Biology

ecosystems-interactions-energy-and-dynamics

Ecosystems- Interactions, Energy, and Dynamics

LS.Bio.5.2

What is Weather?

- [Profesor] El tiempo hace
referencia a las condiciones

que ocurren en la atmósfera
durante breves períodos,

influenciado por las interacciones

entre el Sol, la atmósfera,
el océano y la tierra.

La energía solar ingresa
a la atmósfera y es absorbida

por la tierra
y el agua superficial

que luego emiten
radiación termal infrarroja

y calientan el aire.

Luego, sube aire cálido menos denso

cerca de la superficie terrestre

y crea corrientes verticales
en la atmósfera superior,

que tiene menos presión

Como resultado, el aire
se enfría y se densifica más,

y causa que vuelva a caer,

un proceso llamado "convección".

Este proceso atmosférico local

combinado con la inclinación
dinámica de la Tierra

hacia el Sol

crea cambios en la presión,
la temperatura atmosférica

y las precipitaciones
todos los días del mes.

Así, estos factores varían,
y según donde estemos

en la superficie terrestre,
el clima es diferente.

Ettema, Dick, Margareta Friman, Lars E. Olsson y Tommy Gärling. "Efectos de la estación y el clima en el estado de ánimo y la satisfacción con los viajes". Frontiers in Psychology 8 (6 de febrero de 2017). [<a href="https://doi.org/10.3389/fpsyg.2017.00140" target="__blank">Fuente</a>]

¿qué es el clima?

<h4>Descripción general</h4> El tiempo se refiere a las condiciones atmosféricas en un momento y lugar específicos. Está influenciado por las interacciones entre el sol, la atmósfera, la hidrosfera y la geosfera. Como estos factores varían según la ubicación y el tiempo, se observan diferentes condiciones climáticas en todo el planeta. <h4>La radiación solar y el efecto invernadero</h4> La radiación solar atraviesa la atmósfera e interactúa con la superficie terrestre y el agua. Estas emiten calor, calentando el aire. Parte del calor escapa al espacio, mientras que otra parte queda atrapada en la atmósfera por ciertos gases, generando el efecto invernadero. El aire caliente, menos denso que el frío, asciende, creando corrientes verticales. A medida que se aleja de la fuente de calor, se enfría, se vuelve más denso y desciende. Este proceso se llama circulación por convección. <h4>Clima diario</h4> El clima se mide mediante seis parámetros: temperatura, presión atmosférica, viento, humedad, precipitación y nubosidad. Los meteorólogos analizan estos factores para predecir el clima a corto plazo. Por ejemplo, la presión atmosférica indica el peso del aire sobre un punto. La alta presión suele asociarse con cielos despejados y temperaturas más frías, mientras que la baja presión favorece climas cálidos y tormentosos. Cambios en la presión ayudan a prever si se necesitará un paraguas o se espera un día soleado. <h4>Eventos climáticos extremos</h4> Los fenómenos meteorológicos extremos incluyen olas de calor, olas de frío, huracanes, tornados, sequías e inundaciones. Al ser repentinos, son más difíciles de predecir.Estos eventos se comparan con registros históricos de cada lugar. Estudios indican que el cambio climático ha aumentado la frecuencia e intensidad de temperaturas extremas y precipitaciones. Además, los modelos climáticos sugieren que la Tierra experimentará condiciones más extremas, como veranos persistentemente cálidos en latitudes altas.

¿Qué es el clima?

Visión general

El clima se refiere al estado actual de las condiciones atmosféricas en un momento y lugar específicos. El clima es temporal y está influenciado por el ...

Education

Educación

JoVE Core

Biología

Ecology

Ecología

Biodiversity and Conservation

Biodiversidad y conservación

KEY TERMS AND CONCEPTS

TÉRMINOS Y CONCEPTOS CLAVE

how sunlight shapes daily weather

Weather is the current state of the atmosphere at a specific time and place. It is temporary and changes from one location to another. Weather is shaped by the interaction of the sun, atmosphere, hydrosphere, and geosphere.

Solar radiation reaches Earth and interacts with water and land. These surfaces release that energy as thermal radiation, or heat, which warms the air above them. Some of that heat escapes back into space, but some is trapped by atmospheric gases. This heat retention is called the greenhouse effect, and greenhouse gases hold more heat than other gases.

Warm air is less dense than cold air, so it rises. As it rises into areas of lower atmospheric pressure, it cools, becomes denser, and falls again. This movement creates convection circulation, which helps move heat through the atmosphere.

Daily weather is measured using six main factors: temperature, atmospheric pressure, wind, humidity, precipitation, and cloudiness. Meteorologists track these conditions and use past observations to predict short-term weather changes. Atmospheric pressure is the weight of the air above us. High pressure is often linked to cooler temperatures and clear skies, while low pressure is often linked to warmer weather and storms. A rise or drop in pressure can help weather forecasters decide whether to expect sunshine or bring an umbrella.

Extreme weather events include heat waves, cold waves, hurricanes, tornadoes, droughts, and floods. These events can happen suddenly, so they are harder to predict than day-to-day weather. Scientists describe them using historical records for a specific place. Research shows that human-caused climate change has increased the frequency and intensity of some daily temperature and precipitation extremes. Climate models also suggest more extreme weather in the future, including persistent summer extremes in northern latitudes.

How Sunlight Shapes Daily Weather

what is weather?

Weather is the current state of the atmosphere at a specific time and place. It is temporary and changes from one location to another. Weather is shaped by the interaction of the sun, atmosphere, hydrosphere, and geosphere. Solar radiation reaches Earth and interacts with water and land. These surfaces release that energy as thermal radiation, or heat, which warms the air above them. Some of that heat escapes back into space, but some is trapped by atmospheric gases. This heat retention is...

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what is biodiversity?

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threats to biodiversity

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conservation of declining populations

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biodiversity and human values

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what is conservation biology?

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what is climate?

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Climate describes the usual weather conditions in a place over a long period of time. The idea is simple: climate is what you expect, while weather is what you get. Climate is shaped by geographic factors such as latitude, terrain, and how close an area is to bodies of water. Weather and climate are related, but they work on different time scales. Weather is the state of the atmosphere at a specific time and place. Climate is the average pattern of weather over much longer periods. Because of...

sustainable development

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Sustainable development depends on protecting oceans while meeting human needs. As the human population grows and uses more resources, people must stay aware of the planet’s natural limits. The goal is to improve life now without taking away the resources future generations will need. Long-term sustainability depends on understanding how human actions affect ecological systems. Oceans are a major part of this balance. They provide food for people, produce much of the atmosphere’s oxygen, and...

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key terms and concepts

Learn how solar radiation, the greenhouse effect, convection, and air pressure shape daily weather, plus why extreme weather is harder to predict.

How Sunlight Shapes Daily Weather | JoVE K12

JoVE Core series brings biology to life through over 300 concise and easy-to-understand animated video lessons that explain key concepts in biology, plus more than 150 scientist-in-action videos that show actual research experiments conducted in today’s laboratories.

biology

JoVE Core Biología da vida a la biología a través de una serie con más de 300 lecciones de vídeo animadas, concisas y fáciles de entender, que explican conceptos clave de la biología, incluyendo también más de 150 vídeos de científicos en acción, que muestran experimentos reales realizados en laboratorios actuales de investigación.

How Sunlight Shapes Daily Weather

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