DOI: 10.1002/2015GB005097
Scopus记录号: 2-s2.0-84941735755
论文题名: Ocean nutrient pathways associated with the passage of a storm
作者: Rumyantseva A ; , Lucas N ; , Rippeth T ; , Martin A ; , Painter S ; C ; , Boyd T ; J ; , Henson S
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期: 8 起始页码: 1179
结束页码: 1189
语种: 英语
英文关键词: diapycnal mixing
; inertial currents
; North Atlantic Ocean
; nutrients
; storms
Scopus关键词: euphotic zone
; mixing
; nutrient budget
; nutrient dynamics
; ocean
; primary production
; pycnocline
; storm
; surface layer
; wind forcing
; wind stress
; Atlantic Ocean
; Atlantic Ocean (North)
英文摘要: Storms that affect ocean surface layer dynamics and primary production are a frequent occurrence in the open North Atlantic Ocean. In this study we use an interdisciplinary data set collected in the region to quantify nutrient supply by two pathways associated with a storm event: entrainment of nutrients during a period of high wind forcing and subsequent shear spiking at the pycnocline due to interactions of storm-generated inertial currents with wind. The poststorm increase in surface layer nitrate (by ~20 mmol m-2) was predominantly driven by the first pathway: nutrient intrusion during the storm. Alignment of poststorm inertial currents and surface wind stress caused shear instabilities at the ocean pycnocline, forming the second pathway for nutrient transport into the euphotic zone. During the alignment period, pulses of high-turbulence nitrate flux through the pycnocline (up to 1 mmol m-2 d-1; approximately 25 times higher than the background flux) were detected. However, the impact of the poststorm supply was an order of magnitude lower than during the storm due to the short duration of the pulses. Cumulatively, the storm passage was equivalent to 2.5-5% of the nitrate supplied by winter convection and had a significant effect compared to previously reported (sub)mesoscale dynamics in the region. As storms occur frequently, they can form an important component in local nutrient budgets. ©2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77951
Appears in Collections: 气候变化事实与影响
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作者单位: National Oceanography Centre, Southampton, United Kingdom; Ocean and Earth Science, University of Southampton, Southampton, United Kingdom; School of Ocean Sciences, Bangor University, Menai Bridge, United Kingdom; Scottish Association for Marine Science, Scottish Marine Institute, Argyll, United Kingdom
Recommended Citation:
Rumyantseva A,, Lucas N,, Rippeth T,et al. Ocean nutrient pathways associated with the passage of a storm[J]. Global Biogeochemical Cycles,2015-01-01,29(8)