Gradients 3 KM1906 Organic and Inorganic Nutrients

<p>&quot;This dataset is from the Gradients 3 cruise (KM1906) conducted April 10- April 29, 2019 in the North Pacific Ocean. CTD/rosette profiles were taken down to 1000 meters and samples were collected from niskin bottles attached to the CTD.&quot; &quot;All organic and inorganic nutrients are analyzed in unfiltered seawater that was sampled aboard into HDPE or polypropylene bottles and immediately frozen. Silicate, phosphate and nitrate+nitrite are determined colormetrically on a SEAL Analytical Autoanalyzer (AA3 with HR detectors), with the exception of nitrate+nitrite that is &lt;0.5umol/L, which is analyzed by chemiluminescence. Total phosphorus (TP) and total nitrogen (TN) are determined by analysis of phosphate and nitrate, respectively, after oxidation by high-intensity ultraviolet light. Total organic phosphorus and total organic nitrogen are determined by subtracting background PO4 and NO3+NO2 from TP and TN, respectively. Total organic carbon is determined by combustion on a Shimadzu TOC-V analyzer.&quot;</p> <p>This description was reproduced using the following sources:</p> <p>https://simonscmap.com/catalog/datasets/KM1906_Gradients3</p> <p>https://simonscmap.com/catalog/datasets/MGL1704_Gradients2_Nutrients</p>