Extreme variability in Irminger Sea winter heat loss revealed by ocean observatories initiative mooring and the ERA5 reanalysis
Ground‐breaking measurements from the ocean observatories initiative Irminger Sea surface mooring (60°N, 39°30′W) are presented that provide the first in situ characterization of multiwinter surface heat exchange at a high latitude North Atlantic site. They reveal strong variability (December 2014 n...
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ftnerc:oai:nora.nerc.ac.uk:522316 2023-05-15T16:29:02+02:00 Extreme variability in Irminger Sea winter heat loss revealed by ocean observatories initiative mooring and the ERA5 reanalysis Josey, S. A. de Jong, M. F. Oltmanns, M. Moore, G. K. Weller, R. A. 2019-01-29 text http://nora.nerc.ac.uk/id/eprint/522316/ https://nora.nerc.ac.uk/id/eprint/522316/1/Josey_et_al-2019-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2018GL080956 en eng Wiley https://nora.nerc.ac.uk/id/eprint/522316/1/Josey_et_al-2019-Geophysical_Research_Letters.pdf Josey, S. A. orcid:0000-0002-1683-8831 de Jong, M. F.; Oltmanns, M. orcid:0000-0002-8959-4938 Moore, G. K.; Weller, R. A. 2019 Extreme variability in Irminger Sea winter heat loss revealed by ocean observatories initiative mooring and the ERA5 reanalysis. Geophysical Research Letters, 46 (1). 293-302. https://doi.org/10.1029/2018GL080956 <https://doi.org/10.1029/2018GL080956> cc_by_sa_4 CC-BY-SA Publication - Article PeerReviewed 2019 ftnerc https://doi.org/10.1029/2018GL080956 2023-02-04T19:47:50Z Ground‐breaking measurements from the ocean observatories initiative Irminger Sea surface mooring (60°N, 39°30′W) are presented that provide the first in situ characterization of multiwinter surface heat exchange at a high latitude North Atlantic site. They reveal strong variability (December 2014 net heat loss nearly 50% greater than December 2015) due primarily to variations in frequency of intense short timescale (1–3 days) forcing. Combining the observations with the new high resolution European Centre for Medium Range Weather Forecasts Reanalysis 5 (ERA5) atmospheric reanalysis, the main source of multiwinter variability is shown to be changes in the frequency of Greenland tip jets (present on 15 days in December 2014 and 3 days in December 2015) that can result in hourly mean heat loss exceeding 800 W/m2. Furthermore, a new picture for atmospheric mode influence on Irminger Sea heat loss is developed whereby strongly positive North Atlantic Oscillation conditions favor increased losses only when not outweighed by the East Atlantic Pattern. Article in Journal/Newspaper Greenland North Atlantic North Atlantic oscillation Natural Environment Research Council: NERC Open Research Archive Greenland Irminger Sea ENVELOPE(-34.041,-34.041,63.054,63.054) Geophysical Research Letters 46 1 293 302 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Ground‐breaking measurements from the ocean observatories initiative Irminger Sea surface mooring (60°N, 39°30′W) are presented that provide the first in situ characterization of multiwinter surface heat exchange at a high latitude North Atlantic site. They reveal strong variability (December 2014 net heat loss nearly 50% greater than December 2015) due primarily to variations in frequency of intense short timescale (1–3 days) forcing. Combining the observations with the new high resolution European Centre for Medium Range Weather Forecasts Reanalysis 5 (ERA5) atmospheric reanalysis, the main source of multiwinter variability is shown to be changes in the frequency of Greenland tip jets (present on 15 days in December 2014 and 3 days in December 2015) that can result in hourly mean heat loss exceeding 800 W/m2. Furthermore, a new picture for atmospheric mode influence on Irminger Sea heat loss is developed whereby strongly positive North Atlantic Oscillation conditions favor increased losses only when not outweighed by the East Atlantic Pattern. |
format |
Article in Journal/Newspaper |
author |
Josey, S. A. de Jong, M. F. Oltmanns, M. Moore, G. K. Weller, R. A. |
spellingShingle |
Josey, S. A. de Jong, M. F. Oltmanns, M. Moore, G. K. Weller, R. A. Extreme variability in Irminger Sea winter heat loss revealed by ocean observatories initiative mooring and the ERA5 reanalysis |
author_facet |
Josey, S. A. de Jong, M. F. Oltmanns, M. Moore, G. K. Weller, R. A. |
author_sort |
Josey, S. A. |
title |
Extreme variability in Irminger Sea winter heat loss revealed by ocean observatories initiative mooring and the ERA5 reanalysis |
title_short |
Extreme variability in Irminger Sea winter heat loss revealed by ocean observatories initiative mooring and the ERA5 reanalysis |
title_full |
Extreme variability in Irminger Sea winter heat loss revealed by ocean observatories initiative mooring and the ERA5 reanalysis |
title_fullStr |
Extreme variability in Irminger Sea winter heat loss revealed by ocean observatories initiative mooring and the ERA5 reanalysis |
title_full_unstemmed |
Extreme variability in Irminger Sea winter heat loss revealed by ocean observatories initiative mooring and the ERA5 reanalysis |
title_sort |
extreme variability in irminger sea winter heat loss revealed by ocean observatories initiative mooring and the era5 reanalysis |
publisher |
Wiley |
publishDate |
2019 |
url |
http://nora.nerc.ac.uk/id/eprint/522316/ https://nora.nerc.ac.uk/id/eprint/522316/1/Josey_et_al-2019-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2018GL080956 |
long_lat |
ENVELOPE(-34.041,-34.041,63.054,63.054) |
geographic |
Greenland Irminger Sea |
geographic_facet |
Greenland Irminger Sea |
genre |
Greenland North Atlantic North Atlantic oscillation |
genre_facet |
Greenland North Atlantic North Atlantic oscillation |
op_relation |
https://nora.nerc.ac.uk/id/eprint/522316/1/Josey_et_al-2019-Geophysical_Research_Letters.pdf Josey, S. A. orcid:0000-0002-1683-8831 de Jong, M. F.; Oltmanns, M. orcid:0000-0002-8959-4938 Moore, G. K.; Weller, R. A. 2019 Extreme variability in Irminger Sea winter heat loss revealed by ocean observatories initiative mooring and the ERA5 reanalysis. Geophysical Research Letters, 46 (1). 293-302. https://doi.org/10.1029/2018GL080956 <https://doi.org/10.1029/2018GL080956> |
op_rights |
cc_by_sa_4 |
op_rightsnorm |
CC-BY-SA |
op_doi |
https://doi.org/10.1029/2018GL080956 |
container_title |
Geophysical Research Letters |
container_volume |
46 |
container_issue |
1 |
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293 |
op_container_end_page |
302 |
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1766018726279249920 |