HSHL05/HSRR04: Region specific climate information for Haaglanden and Rotterdam
The goal of this project was to produce specific climate data and information about the current and future climate for the regions Haaglanden and Rotterdam. The focus was on the climate effects on users in the area. Potentially affected users were identified, as well as their dependency on climate and the relevant climate variables.
An extensive overview is given on the available knowledge concerning climate variables like temperature, precipitation, drought, wind, sea level etc. in current and future climate.
Within the two Hotspots excess and shortage of water are important aspects. To assess the impact of the changes in precipitation properly, region specific climate information was needed. Several projects of KNMI produced information about the expected regional precipitation patterns. This information was used to adjust climate information and data, and to improve the assessment of the impacts for these regions.
There also is a high demand for information about extreme temperatures in urban areas in Haaglanden and Rotterdam. Due to the Urban Heat Island effect (UHI effect) the temperature in urban areas is higher than in the surrounding rural areas. Especially during heat waves this can lead to thermal stress resulting in more deaths, decreased productivity etc. There were few data available on the UHI effect in the Netherlands. Based on literature and third party measurements this project tried to quantify the UHI effect under different weather conditions by means of a quickscan. Where possible, the effect of adaptation measures was estimated.