Positive News Today

Positive News Today
Global Media

Environmental News Network – Streetlights Contribute Less to Nighttime Light Emissions in Cities than Expected

October 30, 2020026
Share0

When satellites take pictures of Earth at night, how much of the light that they see comes from streetlights?

When satellites take pictures of Earth at night, how much of the light that they see comes from streetlights? A team of scientists from Germany, the USA, and Ireland have answered this question for the first time using the example of the U.S. city of Tucson, thanks to “smart city” lighting technology that allows cities to dim their lights. The result: only around 20 percent of the light in the satellite images of Tucson comes from streetlights. The study is published today in the journal “Lighting Research & Technology”.

The team conducted an experiment by changing the brightness of streetlights in the city of Tucson, Arizona, USA, and observing how this changed how bright the city appeared from space. Dr. Christopher Kyba from the GFZ German Research Centre for Geosciences led the team that conducted the experiment, and said the work is important because it shows that smart city technologies can be used to perform city-scale experiments. “When sensors and control systems are installed throughout an entire city, it is possible to make a change in how the city works, and then measure the impact that change has on the environment, even from outer space,” Kyba said.

Read more at: GFZ Geoforschungszentrum Potsdam, Helmholtz Centre

View of a street in Tucson with the lights set to 30 and 90 percent illumination. (Photo Credit: John Barentine)

 

Source

Share0
previous post
Cannabis data lacking, but machine learning could help: A new study shows we know little about compounds in marijuana, and names don’t mean much
next post
Environmental News Network – California’s Rising and Sinking Coast

Related posts

Meet the doomers: why some young US voters have given up hope on climate

TheEarthLabSeptember 29, 2020

A Surprisingly Simple Fish Dish From a High-Concept Design Duo

TheEarthLabNovember 19, 2020

Environmental News Network – SDSC’s ‘Comet’ Supercomputer Used to Simulate Environmental Changes in Chesapeake Bay

TheEarthLabAugust 14, 2020
Click to comment

Leave a Comment Cancel Reply

Save my name, email, and website in this browser for the next time I comment.

Recent Posts

  • Himalayan State Becomes First in India to Give Wives Co-Ownership of Ancestral Land
  • No data on efficacy of India’s COVID vaccines against South African, Brazilian variants: Scientists
  • Flipkart says working on scaling loyalty programme, grocery, fashion biz
  • Petrol, diesel prices remain unchanged on Monday
  • Influencers Find Welcome in Paradise, While the Rest of Us Watch From Lockdown

Archives

  • March 2021
  • February 2021
  • January 2021
  • December 2020
  • November 2020
  • October 2020
  • September 2020
  • August 2020
  • July 2020

Subscrible

Subscribe my Newsletter for new blog posts, tips & new photos. Let's stay updated!

  • News
  • Projects
  • About
  • Contact
  • TV Pitch
FacebookTwitterInstagram
@2020 - thelab.earth. All Right Reserved.
theLAB.earth
  • Global
    • Global News
    • Global Media
    • Global Events
    • Global Projects
  • Energy
    • Energy News
    • Energy Media
    • Energy Events
    • Energy Projects
  • Water
    • Water News
    • Water Media
    • Water Events
    • Water Projects
  • Human Kindness
    • Human Kindness News
    • Human Kindness Media
    • Human Kindness Events
    • Human Kindness Projects
  • Projects
logo
  • Global
    • Global News
    • Global Media
    • Global Events
    • Global Projects
  • Energy
    • Energy News
    • Energy Media
    • Energy Events
    • Energy Projects
  • Water
    • Water News
    • Water Media
    • Water Events
    • Water Projects
  • Human Kindness
    • Human Kindness News
    • Human Kindness Media
    • Human Kindness Events
    • Human Kindness Projects
  • Projects
@2020 - thelab.earth. All Right Reserved.
FacebookTwitterInstagram