High Salinity Shelf Water production rates in Terra Nova Bay, Ross Sea from high-resolution salinity observations
Abstract High Salinity Shelf Water (HSSW) formed in the Ross Sea of Antarctica is a precursor to Antarctic Bottom Water (AABW), a water mass that constitutes the bottom limb of the global overturning circulation. HSSW production rates are poorly constrained, as in-situ observations are scarce. Here,...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-01-01
|
| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-43880-1 |
| _version_ | 1797274053639143424 |
|---|---|
| author | Una Kim Miller Christopher J. Zappa Arnold L. Gordon Seung-Tae Yoon Craig Stevens Won Sang Lee |
| author_facet | Una Kim Miller Christopher J. Zappa Arnold L. Gordon Seung-Tae Yoon Craig Stevens Won Sang Lee |
| author_sort | Una Kim Miller |
| collection | DOAJ |
| description | Abstract High Salinity Shelf Water (HSSW) formed in the Ross Sea of Antarctica is a precursor to Antarctic Bottom Water (AABW), a water mass that constitutes the bottom limb of the global overturning circulation. HSSW production rates are poorly constrained, as in-situ observations are scarce. Here, we present high-vertical-and-temporal-resolution salinity time series collected in austral winter 2017 from a mooring in Terra Nova Bay (TNB), one of two major sites of HSSW production in the Ross Sea. We calculate an annual-average HSSW production rate of ~0.4 Sv (106 m 3 s −1), which we use to ground truth additional estimates across 2012–2021 made from parametrized net surface heat fluxes. We find sub-seasonal and interannual variability on the order of $$0.1$$ 0.1 $${Sv}$$ S v , with a strong dependence on variability in open-water area that suggests a sensitivity of TNB HSSW production rates to changes in the local wind regime and offshore sea ice pack. |
| first_indexed | 2024-03-07T14:52:53Z |
| format | Article |
| id | doaj.art-c0cf387ef0d04fa4be804702bafe6b6b |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-07T14:52:53Z |
| publishDate | 2024-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-c0cf387ef0d04fa4be804702bafe6b6b2024-03-05T19:35:29ZengNature PortfolioNature Communications2041-17232024-01-0115111310.1038/s41467-023-43880-1High Salinity Shelf Water production rates in Terra Nova Bay, Ross Sea from high-resolution salinity observationsUna Kim Miller0Christopher J. Zappa1Arnold L. Gordon2Seung-Tae Yoon3Craig Stevens4Won Sang Lee5Lamont-Doherty Earth Observatory of Columbia UniversityLamont-Doherty Earth Observatory of Columbia UniversityLamont-Doherty Earth Observatory of Columbia UniversityKyungpook National UniversityNational Institute of Water and Atmospheric ResearchKorea Polar Research InstituteAbstract High Salinity Shelf Water (HSSW) formed in the Ross Sea of Antarctica is a precursor to Antarctic Bottom Water (AABW), a water mass that constitutes the bottom limb of the global overturning circulation. HSSW production rates are poorly constrained, as in-situ observations are scarce. Here, we present high-vertical-and-temporal-resolution salinity time series collected in austral winter 2017 from a mooring in Terra Nova Bay (TNB), one of two major sites of HSSW production in the Ross Sea. We calculate an annual-average HSSW production rate of ~0.4 Sv (106 m 3 s −1), which we use to ground truth additional estimates across 2012–2021 made from parametrized net surface heat fluxes. We find sub-seasonal and interannual variability on the order of $$0.1$$ 0.1 $${Sv}$$ S v , with a strong dependence on variability in open-water area that suggests a sensitivity of TNB HSSW production rates to changes in the local wind regime and offshore sea ice pack.https://doi.org/10.1038/s41467-023-43880-1 |
| spellingShingle | Una Kim Miller Christopher J. Zappa Arnold L. Gordon Seung-Tae Yoon Craig Stevens Won Sang Lee High Salinity Shelf Water production rates in Terra Nova Bay, Ross Sea from high-resolution salinity observations Nature Communications |
| title | High Salinity Shelf Water production rates in Terra Nova Bay, Ross Sea from high-resolution salinity observations |
| title_full | High Salinity Shelf Water production rates in Terra Nova Bay, Ross Sea from high-resolution salinity observations |
| title_fullStr | High Salinity Shelf Water production rates in Terra Nova Bay, Ross Sea from high-resolution salinity observations |
| title_full_unstemmed | High Salinity Shelf Water production rates in Terra Nova Bay, Ross Sea from high-resolution salinity observations |
| title_short | High Salinity Shelf Water production rates in Terra Nova Bay, Ross Sea from high-resolution salinity observations |
| title_sort | high salinity shelf water production rates in terra nova bay ross sea from high resolution salinity observations |
| url | https://doi.org/10.1038/s41467-023-43880-1 |
| work_keys_str_mv | AT unakimmiller highsalinityshelfwaterproductionratesinterranovabayrossseafromhighresolutionsalinityobservations AT christopherjzappa highsalinityshelfwaterproductionratesinterranovabayrossseafromhighresolutionsalinityobservations AT arnoldlgordon highsalinityshelfwaterproductionratesinterranovabayrossseafromhighresolutionsalinityobservations AT seungtaeyoon highsalinityshelfwaterproductionratesinterranovabayrossseafromhighresolutionsalinityobservations AT craigstevens highsalinityshelfwaterproductionratesinterranovabayrossseafromhighresolutionsalinityobservations AT wonsanglee highsalinityshelfwaterproductionratesinterranovabayrossseafromhighresolutionsalinityobservations |