GreenFrogg 2 research notes and 2 wiki edits | Joined over 2 years ago The pilot experimental project “Smart Emission”, is constructing an experimental citizen-sensor-network in the city of Nijmegen. This project, as part of research program ‘Maps 4 Society,’ is one of the currently running Smart City projects in the Netherlands. A number of social, technical and governmental innovations are put together in this project: (1) innovative sensing method: new, low-cost sensors are being designed and built in the project and tested in practice, using small sensing-modules that measure air quality indicators, amongst others NO2, CO2, ozone, temperature and noise load. (2) big data: the measured data forms a refined data-flow from sensing points at places where people live and work: thus forming a ‘big picture’ to build a real-time, in-depth understanding of the local distribution of urban air quality (3) empowering citizens by making visible the ‘externality’ of urban air quality and feeding this into a bottom-up planning process: co-interpret the mapped feedback data, discuss and collectively explore possible options for improvement to get a fair and ‘better’ distribution of air pollution in the city. The approach is based on the philosophy of ‘bottom up urban planning,’ from local places to city-government levels. We analyse how planning practice can benefit from seizing the opportunity of enabling technologic capacities and advancements of small and low-cost sensors, sensor data, Spatial Data Infrastructures and dispersed Geographic Information Flows. In our view, focusing these technological innovations on what economists call ‘externalities’, brings these externalities on the table and puts them in the spotlights for the eyes of citizens and city-planners. Being measured and counted transforms externalities as air quality from ‘unaccounted for,invisible side-effects’, treated separately from economic choices, into traceable ‘feedback’ about the state of our cities, and our own role in it.

0 questions asked

16 comments posted

0 activities posted

0 activities attempted

How good is the PurpleAir sensor and what does it detect?

warren asked about over 1 year ago


commented on Oct 11, 2018 0

commented on Oct 17, 2018 0

commented on Oct 26, 2018 0

commented on Oct 26, 2018 0

commented on Oct 26, 2018 0

commented on Oct 26, 2018 0

commented on Jan 04, 2018 3

commented on Jan 05, 2018 1

commented on Jan 09, 2018 2

commented on Jan 11, 2018 0

commented on Oct 17, 2018 0

Show all 11 comments »

View these maps at »

Title Creation date Image


Comment Last activity Moderation
"I don't have experience with the Purple Air. The page is an overview made by the Dutch institute of environmental health (RIVM). They coordinate. Y..." | Read more » 9 months ago
"My PPD42NS was lost with an attempt to update the sofware. I use now the SDS011 from hackair. " | Read more » 9 months ago
" and and " | Read more » 9 months ago
"If its still a point. From my archive. The project I am involved in has changed to the SDS011. " | Read more » 11 months ago
"@ Warren, I will try to make a blog. Have to make time :-). There are a lot of differences with the measurements last year. Several different (and ..." | Read more » over 1 year ago
"This is one hour after midnight: " | Read more » over 1 year ago
"This is one hour after midnight: " | Read more » over 1 year ago
"It looks like this: " | Read more » over 1 year ago
"Now the new measurements site for new years eve 2017/2018: for more info see: https://www.samenm..." | Read more » over 1 year ago
"Now on LinkedIn: The calibration model, based on Artificial Neural Network (ANN) algorithms, for low-cost air-quality sensors, developed in the Sma..." | Read more » over 2 years ago
"History of each sensor point now available for evaluation. It's downloadeble as an Exel file. Just click on the the sensor and choose: "verrijkte d..." | Read more » over 2 years ago
"East & middle of the Netherlands: Deventer, Zwolle, Wageningen, Groningen, Nijmegen, Arnhem en omgeving: Results on the same scale " | Read more » over 2 years ago
"Compilation of the firework PM peak @ the 76 sensors. The Yellow points are the overall average and the bleu dots the local values " | Read more » over 2 years ago
"Done! See the picture " | Read more » over 2 years ago
"@xose: My sensor is already enclosured. But there are still sensors to be installed. I will put the question on the project forum (in dutch languag..." | Read more » over 2 years ago
"@Aldehyde: or " | Read more » over 2 years ago


Tags organize our knowledge base. Click to learn more or subscribe to a topic.
  • lat:51.83
  • lon:5.848
  • location:blurred
  • place:nijmegen-netherlands

RSS feed for GreenFrogg