16 February 2022 - Hourly weather data is available from observations, but also from models that estimate local weather conditions - a bit like weather forecasts for the past. In this article, I compare estimates from Oikolab and ERA5 to observations from the Royal Netherlands Meteorological Institute (KNMI), for three locations in the Netherlands.

5 December 2021 - Dutch trade unions enjoy broad support among workers, but the share of employees who are members of a trade union is decreasing. This hasn’t always been the case, of course. In this article I’ll explore trade union growth.

31 March 2021 - On the internet, you’ll find many articles that discuss the theoretical effect of wind on cycling speed (plus articles on wind tunnel experiments, often paid for by companies that sell aerodynamic jerseys). But what about actual rides? And what’s the effect of crosswinds? I did an exploratory analysis of about 125 rides around the Ronde Hoep, a polder to the south of Amsterdam.

30 December 2021 - Every year when it’s time for New Year’s resolutions, there’s a spike in google searches for ‘quit smoking’, but an even bigger spike in searches for ‘delete facebook’. An update.

2 October 2020 - The Dutch government plans to change the way in which representatives, including Members of Parliament, are elected. The number of votes candidates get will play a larger role in deciding who gets elected. I’ll explore how this might impact candidates by gender, incumbency, and where they live.