Data from: Late spring nitrate distributions beneath the ice-covered northeastern Chukchi Shelf ...

• Main Authors: Arrigo, Kevin R., Mills, Matthew M., Van Dijken, Gert L., Lowry, Kate E., Pickart, Robert S., Schlitzer, Reiner
• Format: Dataset
• Language: English
• Published: Dryad 2018
• Subjects: Arctic; Canada; Chukchi Sea; Chukchi Shelf; canada basin; Chukchi; Sea ice
• Online Access: https://dx.doi.org/10.5061/dryad.fm7b5; https://datadryad.org/stash/dataset/doi:10.5061/dryad.fm7b5

Measurements of late springtime nutrient concentrations in Arctic waters are relatively rare due to the extensive sea ice cover that makes sampling difficult. During the SUBICE cruise in May-June 2014, an extensive survey of hydrography and pre-bloom concentrations of inorganic macronutrients, oxygen, particulate organic carbon and nitrogen, and chlorophyll a was conducted in the northeastern Chukchi Sea. Cold (< -1.5°C) winter water was prevalent throughout the study area, and the water column was weakly stratified. Nitrate (NO3-) concentration averaged 12.6±1.92 μM in surface waters and 14.0±1.91 μM near the bottom and was significantly correlated with salinity. The highest NO3- concentrations were associated with winter water within the Central Channel flow path. NO3- concentrations were much reduced near the northern shelfbreak within the upper halocline waters of the Canada Basin and along the eastern side of the shelf near the Alaskan coast. Net community production (NCP), estimated as the ... : WOCE WHP Bottle Exchange FileBottle file containing CTD sensor data as well as bottle measurements like nutrients and Chl a.SUBICE_high_NO3_hy1.csv ...