Citizen science project timeline


September – December 2015

Front end of development

Ringland Academie logo

Call for volunteers to expand the academic group of Ringland.
Ringland is a group of citizens in Belgium organising to cover one of the busiest roads in Europe, the ring road that passes close to the city center, to counter air pollution and noise.

Feasibility study.

Evaluation of design concepts.

Decision to go ahead with Palmes tubes on a massive scale.

January – April 2016


Buildup of IT infrastructure, user instructions, science kit, logistics, calibration, location spread.


1 April 2016

Call for participants



Initially, 1000 citizen scientists were sought to participate in the experiment.
Public Facebook and Twitter launch of the project, picked up by local and regional news.

6 April 2016

Expansion to 2000 participants



Increase to 2000 science kits because of overwhelming demand.

15 April 2016

Selection of participants



Matching of applicants to a predefined radius around the Antwerp ring road. Optimizing location spread, filling in blind spots.

The experiment

24-30 April 2016


Distribution of science experiment kit

Multiple occasions for participants to pick up their science kit, including posters to advertise measuring locations.

30 April to 28 May 2016

Measuring period

Weekly e-mail questionnaires to participants, checking their motivation, the exact position of the experiment, etc. Helpdesk was available for reporting problems and irregularities, etc.
Participants were also asked to inform their neighbours with friendly informative postcards.

28 – 29 May 2016

Return of the samplers

Returing the window signs

Participating citizen scientists return their Palmes diffusion tubes, including the polypropylene window sign.

Processing & results

25 June 2016

First results

Giant map

Raw data was plotted on a giant map shown at the Ringland festival.

June – October 2016

Data processing

data processing

Data processing and report writing.

28 October 2016

Final presentation

Presentation of project results at De Roma

Final report of processed results and conclusions at De Roma.

Continuing story

Starting 28 October 2016

Window poster with results

Participants received a poster with a sticker in order to advertise the results where they were measured.

Starting 28 October 2016

Travelling maps

Seven smaller durable maps were made for citizens to present and discuss the results with their neighbourhoods or city districts.

Contact us if you want to use the printed maps for a presentation or discussion.

Download PDFs of the maps on the results page.


26 October 2016



Pickup of ca. one ton of polypropylene window signs for recycling into furniture by Eco-oh!

CurieuzeNeuzen 2016

Deze website gaat over de stikstofdioxidemeting door 2000 burgeronderzoekers die in mei 2016 werd uitgevoerd in Antwerpen.

Voor informatie over het onderzoek
CurieuzeNeuzen In De Tuin,
ga dan naar

This website is about the citizen science project measuring nitrogen dioxide levels during May 2016 in Antwerp, Belgium.

For information about the project
measuring heat and drought in gardens during 2021
called 'CurieuzeNeuzen In De Tuin',
visit this page.