Baltic Sea transect from Arkona to Gdańsk, 2015

A four-day transect from the Arkona Basin to Gdańsk Bay, with 127,640 measurements of chlorophyll-a, CDOM, and total suspended matter in brackish Case-2 waters

Published figures

Interpolated campaign fields, reproduced in their original published form.

Interpolated chlorophyll a field mapped along the lidar track, Arkona Basin to Gdańsk Bay, Arkona Basin to Gdansk Bay, 2015 — Fig. 1Chlorophyll a

Interpolated CDOM field mapped along the lidar track, Arkona Basin to Gdańsk Bay, Arkona Basin to Gdansk Bay, 2015 — Fig. 2CDOM

Interpolated total suspended matter field mapped along the lidar track, Arkona Basin to Gdańsk Bay, Arkona Basin to Gdansk Bay, 2015 — Fig. 3TSM

Arkona to GdańskBaltic Sea

● Baltic Sea 2015, 2015-06-07 – 2015-06-11127,640 measurements IDW interpolation, 600 samples

Chl-a0.6010.3µg/L

CDOM0.0033.7a.u.

TSM0.993.04mg/L

Fig. 4 Campaign measurement record. 127,640 lidar returns are plotted along the vessel track for Chl-a, CDOM, TSM. The field view applies inverse-distance weighting to the same observations; the shoreline is from Natural Earth.

In June 2015, a LIF lidar completed a four-day transect from the Arkona Basin to Gdańsk Bay. The record contains 127,640 simultaneous measurements of chlorophyll-a, CDOM, and total suspended matter in brackish, river-influenced water.

Median CDOM across the section was approximately 6 a.u., several times the chlorophyll fluorescence signal. Recording the three channels together along the track provides a basis for separating their contributions in this optically complex Case-2 setting.