Figure 1
From: Production of fluorescent dissolved organic matter in Arctic Ocean sediments

Sampling sites for sediment pore waters in the Chukchi Shelf (JPC-1a or S1), Northwind Basin (JPC-2 or S2), East Siberian continental slope (JPC-3 or S3), and Chukchi Basin (JPC-4 or S4) of the Arctic Ocean.
The sea ice concentration data from August 27th to September 5th, 2015 were obtained from http://www.meereisportal.de (grant: REKLIM-2013-04) (Refer to Spreen et al.70). The map was created by using Ocean Data View71.