Earth Mean Temp

[tonyeveland]

I'm new to this.

I would like to know how we derive the earth's yearly mean temp.

I assume there are thermometers all over the world, buy how many and how are they connected, how frequently are temps taken?

Stuff line that

 

[rahul]

1. Annual Mean Temperature: When people refer to the Earth's mean temperature, they often talk about the annual mean temperature. This is the average temperature across the entire globe over the course of a year.
2. Variations: The Earth's mean temperature can vary from year to year due to natural climate variability, including factors like El Niño and La Niña events, volcanic eruptions, and long-term climate trends.
3. Long-Term Trends: Over the past century, there has been a noticeable increase in the Earth's mean temperature, primarily due to human activities such as the burning of fossil fuels, deforestation, and industrial processes. This phenomenon is commonly referred to as global warming or climate change.
4. Data Sources: To calculate the Earth's mean temperature, scientists use data from a network of weather stations, satellites, and other monitoring instruments placed around the world. These data sources provide temperature readings from various locations on the Earth's surface.
5. Climate Models: Climate models are also used to estimate the Earth's mean temperature. These models simulate the Earth's climate system and can help project future temperature changes based on different scenarios.
6. Temperature Anomalies: In addition to mean temperature values, scientists often analyze temperature anomalies, which are deviations from the long-term average. Positive anomalies indicate temperatures above the average, while negative anomalies indicate temperatures below the average.
7. Impacts: Changes in the Earth's mean temperature have significant impacts on global climate patterns, including shifts in weather patterns, sea level rise, melting ice caps and glaciers, and effects on ecosystems and biodiversity.

 

[tonyeveland]

1. Annual Mean Temperature: When people refer to the Earth's mean temperature, they often talk about the annual mean temperature. This is the average temperature across the entire globe over the course of a year.
2. Variations: The Earth's mean temperature can vary from year to year due to natural climate variability, including factors like El Niño and La Niña events, volcanic eruptions, and long-term climate trends.
3. Long-Term Trends: Over the past century, there has been a noticeable increase in the Earth's mean temperature, primarily due to human activities such as the burning of fossil fuels, deforestation, and industrial processes. This phenomenon is commonly referred to as global warming or climate change.
4. Data Sources: To calculate the Earth's mean temperature, scientists use data from a network of weather stations, satellites, and other monitoring instruments placed around the world. These data sources provide temperature readings from various locations on the Earth's surface.
5. Climate Models: Climate models are also used to estimate the Earth's mean temperature. These models simulate the Earth's climate system and can help project future temperature changes based on different scenarios.
6. Temperature Anomalies: In addition to mean temperature values, scientists often analyze temperature anomalies, which are deviations from the long-term average. Positive anomalies indicate temperatures above the average, while negative anomalies indicate temperatures below the average.
7. Impacts: Changes in the Earth's mean temperature have significant impacts on global climate patterns, including shifts in weather patterns, sea level rise, melting ice caps and glaciers, and effects on ecosystems and biodiversity.

Nice post,

I have some questions:

1. How does the average temperature work?
Does every station take a reading at certain times and then
all the readings are averaged?
And then all the averages for the year are averaged?
Or what?

2. You don't mention the sun as a variation. Doesn't it vary?

3. The earth has heated over the past century, but how do you know it was caused by fossil fuels?

 

[jacqwayne]

I would like to know the background on whoever answers these questions. I doubt that they are climate experts but are using the opinions of other, self-appointed experts.