Management team

Gerrit Hiemstra, MSc

Gerrit is a meteorologist with in-depth experience in the meteorological field. He graduated in 1986 at Wageningen University as Agricultural Engineer, with a specialisation in Agricultural Meteorology, followed by a 9-year period as operational weather forecaster in a commercial weather company.

After a brief period as head of the operational weather service at Schiphol Airport he founded the successful commercial weather company WeerOnline, which was sold in 2009.

Gerrit is also the well-known weather presenter of NOS, the national news organisation of the Netherlands, since 1998.

At Weather Impact Gerrit is responsible for project acquisition and contract management.

Arnold Lobbrecht, PhD

Arnold graduated in 1986 from Delft University of Technology as Civil Engineer. He gained experience in hydrology, water management and informatics during a 12-years period at a multinational consultancy firm.

After 4 years of research he obtained in 1997 his PhD in operational water management. After that he became part-time professor of hydroinformatics at UNESCO-IHE in Delft, guiding a group of PhD researchers. In 2000 he established HydroLogic, a hydroinformatics company, working on water & ICT projects.

His experience is in decision support systems with focus on flood forecasting, water availability and droughts.