Inter-annual variability in the timing of stratification and the spring bloom in the North-western North Sea
A physical-biological 1D numerical model, forced by tidal currents and observed meteorology, has been used to simulate the inter-annual changes in the timing of spring stratification and the spring phytoplankton bloom between 1974 and 2003 in the Marr Bank region of the North-western North Sea. The...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/541/ https://doi.org/10.1016/j.csr.2006.01.011 |
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ftnerc:oai:nora.nerc.ac.uk:541 2024-06-09T07:48:23+00:00 Inter-annual variability in the timing of stratification and the spring bloom in the North-western North Sea Sharples, Jonathan Ross, Oliver N. Scott, Beth E. Greenstreet, Simon P.R. Fraser, Helen 2006-04 http://nora.nerc.ac.uk/id/eprint/541/ https://doi.org/10.1016/j.csr.2006.01.011 unknown Elsevier Sharples, Jonathan; Ross, Oliver N.; Scott, Beth E.; Greenstreet, Simon P.R.; Fraser, Helen. 2006 Inter-annual variability in the timing of stratification and the spring bloom in the North-western North Sea. Continental Shelf Research, 26 (6). 733-751. https://doi.org/10.1016/j.csr.2006.01.011 <https://doi.org/10.1016/j.csr.2006.01.011> Marine Sciences Publication - Article PeerReviewed 2006 ftnerc https://doi.org/10.1016/j.csr.2006.01.011 2024-05-15T08:39:04Z A physical-biological 1D numerical model, forced by tidal currents and observed meteorology, has been used to simulate the inter-annual changes in the timing of spring stratification and the spring phytoplankton bloom between 1974 and 2003 in the Marr Bank region of the North-western North Sea. The model successfully simulated the observed long-term variability and warming trend of water temperatures in the region, indicating, that the oceanographic climate is influenced primarily by local meteorology rather than by inflows of water from the NE Atlantic Ocean. The spring-neap tidal cycle is shown to affect the timing of the onset of stratification and the spring bloom. with established spring stratification usually beginning as tidal currents decrease from springs to neaps. Spring-neap tidal variability can also produce double spring blooms when stratification that develops after a neap tide is temporarily broken down by the increasing tidal mixing towards the next spring tide. Over the 30 years of model simulations the dominant meteorological control on the timing of the spring stratification and bloom was the spring air temperature. However, there is evidence that control by wind stress variability on the timing of spring stratification was more important before the early 1990s (r(2) = 0.32, significant at 95%). After the early 1990s the wind stress was not significantly correlated with the timing of spring stratification, and the spring air temperature became the main control (r(2) = 0.33, significant at 95%). Increasing air temperature also appears to have driven a gradual trend in the timing of stratification and the spring bloom since the mid 1990s of an average 1 day earlier per year (r(2) = 0.27, significant at 95%). The link between the spring meteorology and the North Atlantic Oscillation (NAO) was investigated, indicating that the NAO played a role in the timing of stratification and the spring bloom prior to 1990, with a significant correlation between the NAO and the spring wind stress, but has had ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Natural Environment Research Council: NERC Open Research Archive Marr ENVELOPE(52.117,52.117,-66.400,-66.400) Continental Shelf Research 26 6 733 751 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Marine Sciences |
spellingShingle |
Marine Sciences Sharples, Jonathan Ross, Oliver N. Scott, Beth E. Greenstreet, Simon P.R. Fraser, Helen Inter-annual variability in the timing of stratification and the spring bloom in the North-western North Sea |
topic_facet |
Marine Sciences |
description |
A physical-biological 1D numerical model, forced by tidal currents and observed meteorology, has been used to simulate the inter-annual changes in the timing of spring stratification and the spring phytoplankton bloom between 1974 and 2003 in the Marr Bank region of the North-western North Sea. The model successfully simulated the observed long-term variability and warming trend of water temperatures in the region, indicating, that the oceanographic climate is influenced primarily by local meteorology rather than by inflows of water from the NE Atlantic Ocean. The spring-neap tidal cycle is shown to affect the timing of the onset of stratification and the spring bloom. with established spring stratification usually beginning as tidal currents decrease from springs to neaps. Spring-neap tidal variability can also produce double spring blooms when stratification that develops after a neap tide is temporarily broken down by the increasing tidal mixing towards the next spring tide. Over the 30 years of model simulations the dominant meteorological control on the timing of the spring stratification and bloom was the spring air temperature. However, there is evidence that control by wind stress variability on the timing of spring stratification was more important before the early 1990s (r(2) = 0.32, significant at 95%). After the early 1990s the wind stress was not significantly correlated with the timing of spring stratification, and the spring air temperature became the main control (r(2) = 0.33, significant at 95%). Increasing air temperature also appears to have driven a gradual trend in the timing of stratification and the spring bloom since the mid 1990s of an average 1 day earlier per year (r(2) = 0.27, significant at 95%). The link between the spring meteorology and the North Atlantic Oscillation (NAO) was investigated, indicating that the NAO played a role in the timing of stratification and the spring bloom prior to 1990, with a significant correlation between the NAO and the spring wind stress, but has had ... |
format |
Article in Journal/Newspaper |
author |
Sharples, Jonathan Ross, Oliver N. Scott, Beth E. Greenstreet, Simon P.R. Fraser, Helen |
author_facet |
Sharples, Jonathan Ross, Oliver N. Scott, Beth E. Greenstreet, Simon P.R. Fraser, Helen |
author_sort |
Sharples, Jonathan |
title |
Inter-annual variability in the timing of stratification and the spring bloom in the North-western North Sea |
title_short |
Inter-annual variability in the timing of stratification and the spring bloom in the North-western North Sea |
title_full |
Inter-annual variability in the timing of stratification and the spring bloom in the North-western North Sea |
title_fullStr |
Inter-annual variability in the timing of stratification and the spring bloom in the North-western North Sea |
title_full_unstemmed |
Inter-annual variability in the timing of stratification and the spring bloom in the North-western North Sea |
title_sort |
inter-annual variability in the timing of stratification and the spring bloom in the north-western north sea |
publisher |
Elsevier |
publishDate |
2006 |
url |
http://nora.nerc.ac.uk/id/eprint/541/ https://doi.org/10.1016/j.csr.2006.01.011 |
long_lat |
ENVELOPE(52.117,52.117,-66.400,-66.400) |
geographic |
Marr |
geographic_facet |
Marr |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
Sharples, Jonathan; Ross, Oliver N.; Scott, Beth E.; Greenstreet, Simon P.R.; Fraser, Helen. 2006 Inter-annual variability in the timing of stratification and the spring bloom in the North-western North Sea. Continental Shelf Research, 26 (6). 733-751. https://doi.org/10.1016/j.csr.2006.01.011 <https://doi.org/10.1016/j.csr.2006.01.011> |
op_doi |
https://doi.org/10.1016/j.csr.2006.01.011 |
container_title |
Continental Shelf Research |
container_volume |
26 |
container_issue |
6 |
container_start_page |
733 |
op_container_end_page |
751 |
_version_ |
1801380080189964288 |