What is the fine-grained topic of the following text: Since 1998 the Nansen Environmental and Remote Sensing Center (NERSC) in Bergen, Norway has developed, implemented and operated services utilizing satellite EO data for monitoring of harmful algae blooms (HAB) and water quality (WQ) conditions in aquatic areas. Only return the topic.
Monitoring of harmful algae blooms and water quality using satellite data by Nansen Environmental and Remote Sensing Center