Observation of nitrate deficit along transects across the Canada Basin after major sea-ice loss
Nutrient data were collected along similar cross-basin transects in the Canada Basin (75°–85°N) in 2005–2008, to evaluate the long-term change in the nitrate deficit. The results revealed a subsurface N* minimum (<−10 μmol/kg), indicating a large nitrate deficit in the upper halocline water of th...
Published in: | Polar Science |
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Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2019
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Subjects: | |
Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=15937 http://id.nii.ac.jp/1291/00015829/ |
Summary: | Nutrient data were collected along similar cross-basin transects in the Canada Basin (75°–85°N) in 2005–2008, to evaluate the long-term change in the nitrate deficit. The results revealed a subsurface N* minimum (<−10 μmol/kg), indicating a large nitrate deficit in the upper halocline water of the basin. The interannual change of N* from 2005 to 2008 demonstrates the increase in the nitrate deficit. The subsurface low-N* waters are expanding, especially in the southern Canada Basin (75°–80°N). The thickening distribution of Pacific water is primarily responsible for the expansion of the nitrate deficit in the basin. |
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