1. Date of download: 6/17/2016 Copyright © 2016 SPIE. All rights reserved. Location of the study area within the Bay of Biscay and oceanographic sampling stations of the Batel-1 (crosses +), Batel-2 (black circles ) and the LQM surveys (triangles ▵ ). See text for details. Figure Legend: From: Water quality monitoring in Basque coastal areas using local chlorophyll-a algorithm and MERIS images J. Appl. Remote Sens. 2012;6(1):063519-1-063519-27. doi:10.1117/1.JRS.6.063519

2. Date of download: 6/17/2016 Copyright © 2016 SPIE. All rights reserved. Linear regression for both Batel surveys between (a) total suspended matter (TSM) and salinity and (b) TSM and turbidity. Figure Legend: From: Water quality monitoring in Basque coastal areas using local chlorophyll-a algorithm and MERIS images J. Appl. Remote Sens. 2012;6(1):063519-1-063519-27. doi:10.1117/1.JRS.6.063519

3. Date of download: 6/17/2016 Copyright © 2016 SPIE. All rights reserved. Spectral signatures (average and standard deviation) for the three types of surface water masses identified: (a) Type I, (b) Type II, and (c) Type III (see text). Figure Legend: From: Water quality monitoring in Basque coastal areas using local chlorophyll-a algorithm and MERIS images J. Appl. Remote Sens. 2012;6(1):063519-1-063519-27. doi:10.1117/1.JRS.6.063519

4. Date of download: 6/17/2016 Copyright © 2016 SPIE. All rights reserved. Pigment concentration for representative stations, estimated with HPLC for the Batel-2 survey. Figure Legend: From: Water quality monitoring in Basque coastal areas using local chlorophyll-a algorithm and MERIS images J. Appl. Remote Sens. 2012;6(1):063519-1-063519-27. doi:10.1117/1.JRS.6.063519

5. Date of download: 6/17/2016 Copyright © 2016 SPIE. All rights reserved. Linear regression between the predicted chl-a by the local algorithm and the in situ measured chl-a. The data are shown on a logarithmic scale for display purposes. Figure Legend: From: Water quality monitoring in Basque coastal areas using local chlorophyll-a algorithm and MERIS images J. Appl. Remote Sens. 2012;6(1):063519-1-063519-27. doi:10.1117/1.JRS.6.063519

6. Date of download: 6/17/2016 Copyright © 2016 SPIE. All rights reserved. Root-mean-square difference (RMS) between the chl-a observed and predicted with the local algorithm in relation to total suspended matter (TSM) concentration. Key: N=number of samples. Figure Legend: From: Water quality monitoring in Basque coastal areas using local chlorophyll-a algorithm and MERIS images J. Appl. Remote Sens. 2012;6(1):063519-1-063519-27. doi:10.1117/1.JRS.6.063519

7. Date of download: 6/17/2016 Copyright © 2016 SPIE. All rights reserved. RMS for the chl-a predicted with the local algorithm, plotted against the chl-a estimated in situ: (a) with HPLC (n=20); (b) spectrophotometry (n=70); (c) total chlorophylls (without considering chlorophyll-a), derived from HPLC (n=20); and (d) total carotenoids derived using HPLC (n=20). Figure Legend: From: Water quality monitoring in Basque coastal areas using local chlorophyll-a algorithm and MERIS images J. Appl. Remote Sens. 2012;6(1):063519-1-063519-27. doi:10.1117/1.JRS.6.063519

8. Date of download: 6/17/2016 Copyright © 2016 SPIE. All rights reserved. Taylor Diagram showing the correlation coefficient (R), the root-mean square difference (RMS), and the standard deviation of the observed chl-a measured in situ (observed) and the chl-a predicted by 4 algorithms derived from reflectances measured in situ, with a TriOS spectrometer. The algorithms represented are the OC4v6, Gitelson’s 3 band MERIS algorithm, the OC5 and the local empirical algorithm (as developed in this study). Figure Legend: From: Water quality monitoring in Basque coastal areas using local chlorophyll-a algorithm and MERIS images J. Appl. Remote Sens. 2012;6(1):063519-1-063519-27. doi:10.1117/1.JRS.6.063519

9. Date of download: 6/17/2016 Copyright © 2016 SPIE. All rights reserved. Chlorophyll-a a maps generated with the local algorithm and the OC5. The local algorithm map was generated with the level 2 product image, belonging to the 3rd MERIS reprocessing release; this was acquired at reduce resolution on the 5th June 2007. Figure Legend: From: Water quality monitoring in Basque coastal areas using local chlorophyll-a algorithm and MERIS images J. Appl. Remote Sens. 2012;6(1):063519-1-063519-27. doi:10.1117/1.JRS.6.063519