What are climate forcings?

An energy imbalance imposed on the climate system either externally or by human activities is termed a climate forcing (NRC 2005); persistent climate forcings cause the temperature of the Earth to change until an energy balance is restored.

Which one of the following is the anthropogenic radiative forcing of climate?

Aerosols
9. Which one of the following is the anthropogenic radiative forcing of climate? Explanation: Aerosols represents an important anthropogenic radiative forcing of climate. Collectively, aerosols block reflect and absorb a portion of income solar radiation.

What is the main cause of the increased greenhouse effect on Earth?

Concentrations of the key greenhouse gases have all increased since the Industrial Revolution due to human activities. Carbon dioxide, methane, and nitrous oxide concentrations are now more abundant in the earth’s atmosphere than any time in the last 800,000 years.

What are model forcings?

As you learned in the first section of this course, the real ocean moves in response to forces. These forces include the winds, tides, heating and cooling of the ocean surface, and precipitation and evaporation. In this section, we discuss how these forces are applied to the ocean in numerical models.

How do El Niño and La Niña affect climate?

El Niño impacts weather systems around the globe, triggering predictable disruptions in temperature, rainfall and winds. La Niña is the opposite – a cooling phase of ENSO that tends to have global climate impacts opposite to those of El Niño.

What is terrestrial radiation How does it differ from solar radiation?

Terrestrial radiation: The heat of the Sun, radiated back by the surface of the Earth, in the form of long waves is known as terrestrial radiation. The energy emitted by the sun is known as solar radiation. Radiation from the earth is called terrestrial radiation.

Which climate forcings have a positive radiative forcing?

Total radiative forcing is dominated by the positive radiative forcing of carbon dioxide. Methane and ozone also contribute positive radiative forcings.

What is greenhouse effect and its importance?

The greenhouse effect refers to the ability of the atmosphere to trap the sun’s heat, increasing the temperature of the planet. When the sun’s energy reaches Earth, the atmosphere absorbs some of it on the way down, and then absorbs more when that energy reflects back off the surface during the day.