The 36 Rrs(?), ad(?), ag(?), and aph(?)
The in situ measurements were obtained from different areasat different seasons around the world, which include ponds in the state ofMississippi, U.S.
A. (MS), Lake Taihu, China (LT), and Lake Erie, U.S.A. (LE). Mississippi Pond dataset (MS): This dataset includes 41samples of remote sensing reflectance (Rrs(?), sr?1) and absorptioncoefficients of phytoplankton (aph(?), m?1), non-algal particles(ad(?)), and gelbstoff (ag(?)).
This dataset (see Mishra et al. 18for details) was collected from a series of highly turbid and productiveaquaculture ponds at various bloom stages (initiation, peak, and senescence) ofcyanobacteria (Chl-a concentration varied from 59 to 1377 mg?m?3),located in northwestern Mississippi, U.S.A., where cyanobacteria blooms with Planktothrix agardhii as the mostabundant species were occurring when the in situ data were collectedLake Taihu dataset (LT): This dataset includes 45 Rrs(?) spectra, corresponding spectra of ad(?), ag(?), and aph(?) (350–750 nm) collected from LakeTaihu, China under cyanobacteria bloom conditions (Chl-a: 10–222 mg·m?3)where the dominant species was Microcystisaeruginosa. Water samples and optical data of surface water were collectedduring two surveys in January–August 2011 and November 2011, respectively.Lake Erie dataset (LE): This dataset is composed of 36 Rrs(?), ad(?), ag(?), and aph(?)samples, and 20 Chl-a and PC concentrations. Cyanobacteria blooms dominated by Microcystis aeruginosa have been seasonally reoccurring in the western basin ofLake Erie since the mid-1990s 19.
The field measurements were collectedduring cruises from 20–23 August 2013 and 18–21 August 2014 in western LakeErie at 16 and 20 stations, respectively, during the peak cyanobacteria bloomperiod 20,21, with chlorophyll concentrations ranging from >1 to 100s of mg·m?3.Since the ponds are too small for the MODIS and MERIS 1 kmspatial resolution imagery, Lake Erie was selected as a local example forapplication of the method to HICO, MODIS and MERIS imageries to obtain pigmentconcentrations and Gaussian absorption distribution. The cyanobacteria bloomwhich occurred in Lake Erie in August 2014 was one of the most serious, causingdisruption to the drinking water supply in Toledo, U.S.A.
The 2014 cruise wasconducted during this event and the sampling locations along with the Chl-a andPC concentrations at each station, are shown in Figure 1, where PCconcentrations as high as ~200 mg?m?3 were noted in the southernportion of Lake Erie.