How did global temperatures change during the 20th century?

The global average surface temperature has increased over the 20th century by about 0.6°C. The global average surface temperature (the average of near surface air temperature over land, and sea surface temperature) has increased since 1861. Over the 20th century the increase has been 0.6 ± 0.2°C5, 6 (Figure 1a).

What are some factors that are contributing to increased global temperatures?

Humans are increasingly influencing the climate and the earth’s temperature by burning fossil fuels, cutting down forests and farming livestock. This adds enormous amounts of greenhouse gases to those naturally occurring in the atmosphere, increasing the greenhouse effect and global warming.

What are the 4 factors that affect global warming?

The most important natural factors are:

• distance from the sea.
• ocean currents.
• direction of prevailing winds.
• shape of the land (known as ‘relief’ or ‘topography’)
• distance from the equator.
• the El Niño phenomenon.

What is the main cause of temperature increase due to global warming?

Concentrations of the key greenhouse gases have all increased since the Industrial Revolution due to human activities. These greenhouse gas emissions have increased the greenhouse effect and caused the earth’s surface temperature to rise. Burning fossil fuels changes the climate more than any other human activity.

How have global temperatures changed during the 20th and 21st centuries?

The global average surface temperature has increased over the 20th century by about 0.6°C. The global average surface temperature (the average of near surface air temperature over land, and sea surface temperature) has increased since 1861. Over the 20th century the increase has been 0.6 ± 0.2°C 5 6 (Figure 1a).

What are the 5 major factors that affect climate?

LOWERN

• Latitude. It depends on how close or how far it is to the equator.
• Ocean currents. Certain ocean currents have different temperatures.
• Wind and air masses. Heated ground causes air to rise which results in lower air pressure.
• Elevation. The higher up you are, the colder and drier it will be.
• Relief.

What are the 7 factors that affect weather?

Weather refers to the state of the atmosphere and includes temperature, precipitation, humidity, cloudiness, visibility, pressure, and winds.