Lake monitoring

Lake monitoring using data from the ESA MERIS instrument carried on Envisat was established by NEODAAS in support of a NERC Airborne Research and Survey Facility (ARSF) project lead by University of Stirling undertaken over Lake Balaton, Hungary in August 2010. This exploited the developments to MERIS 300m (full resolution) processing implemented by NEODAAS. Full resolution MERIS data are obtained in near-real time from the ESA rolling archive as level 1 (and subsequently processed to level 2 geophysical products using NASA's SeaDAS software) and as level 2 produced by ESA. The images gave good coverage during the ARSF flights with chl-a values comparable to those measured in situ. The processing has been continued to create a long time series from MERIS(see Fig 1 also see http://www.neodaas.ac.uk/multiview/my/7days/MERIS/algal_2).

Further work started in 2011 to monitor UK lakes through a NEODAAS application lead by the University of Stirling, with CEH Lancaster and CEH Edinburgh (http://www.neodaas.ac.uk/multiview/lk/7days/MERIS/algal_2).

Figure 1

Figure 1: Full resolution MERIS image of chlorophyll concentration over Lake Balaton, Hungary, from 22 August 2010. Coincident hyperspectral data were obtained by the NERC ARSF while in situ biological, physical, chemical and optical data were taken by University of Stirling, PML and the Balaton Limnological Institute.