Century of Surface Temperature Anomalies – Earthtopomaps

) Century of Surface Temperature Anomalies – Earthtopomaps

By Aodhan Sweeney

Click on the image below for more details:

A webgl globe to visualize how temperatures on Earth have changed over the past century.



A Century of Surface Temperature Anomalies

This experiment uses NASA GISTEMP v4 data and the webgl globe to visualize how temperatures on Earth have changed over the past century.

What is a temperature anomaly?. The term temperature anomaly means a departure from a reference value or long-term average. A positive anomaly indicates that the observed temperature was warmer than the reference value. While a negative anomaly indicates that the observed temperature was cooler than the reference value.

Tropical anomalies have their greatest effect in the Western Pacific. Where the average sea surface temperature is very high so that even a small positive anomaly can generate large increases in evaporation due to the exponential increase of saturation vapor pressure with temperature.

) Century of Surface Temperature Anomalies – Earthtopomaps


Since the 1880s, the average global surface temperature has risen and the average temperature is now more than 2 degrees Fahrenheit (a bit more than 1 degree Celsius) above that of the late 19th century. For reference, the last Ice Age was about 10 degrees Fahrenheit colder than pre-industrial temperatures. 15 janv. 2020

Century of Surface

According to an ongoing temperature analysis led by scientists at NASA’s Goddard Institute for Space Studies (GISS), the average global temperature on Earth has increased by at least 1.1° Celsius (1.9° Fahrenheit) since 1880.


In climate change studies, temperature anomalies are more important than absolute temperature. A temperature anomaly is the difference from an average, or baseline, temperature. The baseline temperature is typically computed by averaging 30 or more years of temperature data.


For each component, the standardized anomaly is calculated as the difference between the current period and the reference period. And then scaled by the division of its reference period standard deviation.

Century of Surface



See also:

Mri of the earth

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Revised September 18, 2023

3 ways Liza Goldberg uses Timelapse to explore the planet

) 3 ways Liza Goldberg uses Timelapse to explore the planet

Liza Goldberg has a big-picture view of climate change and it all started with satellite imagery. In high school she started an internship at NASA, where she built a program that used satellite imagery and Google Earth Engine.

A platform for geospatial analysis, to monitor the loss of mangrove forests.

This gave her a whole new perspective of planetary changes. 

“I was seeing the world through a different lens,” Liza says.

B) 3 ways Liza Goldberg uses Timelapse to explore the planet

“Without images, it’s hard to visualize what things like urbanization, deforestation. Wildfires and rise in temperatures mean to our planet just using statistics and data doesn’t get the message across. I wanted to bring a new perspective to others.” Liza is now a freshman at Stanford University and runs Cloud to Classroom, a program that uses satellite imagery to help teach students around the world about climate change. 

Today, that birds-eye view of the planet is available to even more people with the launch of Timelapse in Google Earth.

For the first time. 24 million satellite photos from the past 37 years have been embedded directly into Google Earth, creating an explorable view of our planet over time. Now anyone can watch time across the globe. And that perspective can be enough to inspire anyone to take action — just like it inspired Liza. READ ARTICLETime flies in Google Earth’s biggest update in yearsIn the biggest update to Google Earth since 2017. You can now see our planet in an entirely new dimension time.

) 3 ways Liza Goldberg uses Timelapse to explore the planet

3 ways Liza Goldberg

“If we want to solve climate challenges, the bottom line is we need to take this information out of scientific papers and put it into the hands of the public so they can make positive change in their local areas,” Liza adds. 

As someone who has spent a lot of time looking at satellite imagery of the Earth, Liza has a few pointers for how to explore the planet with Timelapse and put these changes into context. She shares some of her tips here: 

3 ways Liza Goldberg uses Timelapse to explore the planet

3 ways Liza Goldberg uses Timelapse

Zoom in on your community

If you’re a teacher, reporter, student or just someone exploring Timelapse, start looking at the places you care about. Use the search bar function to zero in on a region you know really well whether it’s the city you grew up in. The place your grandparents are from or where you spent your summers growing up. Seeing the changes at a more personal level contextualizes what global environmental change actually means right now. And what it could mean in the future of your local community. 

3 ways Liza Goldberg

Take a look at how Cape Cod, Massachusetts has changed from above. 

D) 3 ways Liza Goldberg uses Timelapse to explore the planet

Look for the patterns

The patterns are everywhere. You can see how the same trends like rapid changes from wildfires are taking place on the West Coast of the U.S. . And across the world in Australia. Start with the curated videos from Google that show the story of change related to forest change, urban growth. Warming temperatures and more. Then start to look for other trends you see happening across the world. It can be an exercise in unity to see what communities are experiencing here and elsewhere. And see how these changes transcend communities and ecosystems.  

3 ways Liza Goldberg

See how urbanization changes the landscape. 

Soak up the fragile beauty of it all

  • The Timelapse videos are like vignettes of art — enjoy them. Take a step back and remember that this is our planet and it’s worth protecting. For me. Videos like the meandering rivers are captivating. The ability to watch the planet change over time is now in the hands of everyone. And that makes me optimistic. 
3 ways Liza Goldberg

A Google Earth Timelapse of a meandering river over time.

From Liza’s perspective, technology like this can help affect change. In fact, she’s even started to focus more on studying computer science and plans to use those skills to tackle the big issues she cares most about. Like climate change

See also:

An inside look at google earth timelapse

Source: The Keyword


Revised October 01, 2023