Mass and heat transports in the NE Barents Sea: Observations and models |
| |
| Authors: | Tor Gammelsrød Øyvind Leikvin Vidar Lien W Paul Budgell Harald Loeng Wieslaw Maslowski |
| |
| Institution: | 1. Geofysisk Institutt, University of Bergen, 5007 Norway;2. The University Centre in Svalbard, P.O. Box 156, 9171 Longyearbyen, Norway;3. Institute of Marine Research, P.O. Box 1870, Nordnes, 5817 Bergen, Norway;4. Oceanography Department, Naval Postgraduate School, Monterey, California, USA;5. Akvaplan-niva, Polar Environmental Centre, 9296 Tromsø, Norway;1. Department of Arctic Geology, The University Centre in Svalbard (UNIS), P.O. Box 156, N-9171 Longyearbyen, Svalbard, Norway;2. Department of Geology, University of Tromsø, NO-9037 Tromsø, Norway;3. Department of Geological Sciences, Stockholm University, 10691 Stockholm, Sweden;4. Scott Polar Research Institute, University of Cambridge, Lensfield Road, Cambridge CB2 1ER, UK;1. University of Hawai‘i at Mānoa, Honolulu, HI, USA;2. University of Alaska, Fairbanks, AK, USA;3. Scripps Institution of Oceanography, La Jolla, CA, USA;4. University of North Carolina, Chapel Hill, NC, USA;1. Norwegian Polar Institute, Fram Centre, Hjalmar Johansens gt. 14, N-9296 Tromsø, Norway;2. Akvaplan NIVA, Fram Centre, Hjalmar Johansens gt. 14, N-9296 Tromsø, Norway;3. Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Allégaten 70, 5007 Bergen, Norway;4. NorthWest Research Associates, PO Box 3027, Bellevue, WA 98009, USA;5. Australian Antarctic Division, Channel Highway, Kingston, Tasmania 7050, Australia;6. Antarctic Climate & Ecosystems Cooperative Research Centre, University of Tasmania, Private Bag 80, Hobart, Tasmania 7001, Australia;1. Norwegian Polar Institute, Fram Centre, N-9296 Tromsø, Norway;2. Institute of Marine Research, N-5005 Bergen, Norway;3. University Centre at Svalbard, N-9170 Longyearbyen, Norway;4. University of Oslo, Department of Geosciences, N-0316 Oslo, Norway;5. Scottish Association for Marine Science, Scottish Marine Institute, Oban, Argyll PA37 1QA, UK;6. UiT - The Arctic University of Norway, N-9037 Tromsø, Norway;1. Finnish Meteorological Institute, Erik Palménin aukio 1, P.O. Box 503, 00101 Helsinki, Finland;2. Department of Physics, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland;3. Alfred Wegener Institute for Polar and Marine Research, P.O. Box 120161, 27515 Bremerhaven, Germany;4. Shirshov Institute of Oceanology, 36 Nakhimovsky Prospect, Moscow 117997, Russia;1. Woods Hole Oceanographic Institution, Woods Hole, MA 02540, USA;2. University of Toronto, Toronto, OT M5S 1A1, Canada;3. University of Alaska Fairbanks, Fairbanks, AK 99775, USA |
| |
| Abstract: | The strait between Novaya Zemlya and Frans Josef Land, here called the Barents Sea Exit (BSX) is investigated using data obtained from a current-meter array deployed in 1991–1992, and two numerical models (ROMS and NAME). Combining the observations and models the net volume flux towards the Arctic Ocean was estimated to 2.0 ± 0.6 Sv (1 Sv = 106 m3s? 1). The observations indicate that about half of this transport consists of dense, Cold Bottom Water, which may penetrate to great depths and contribute to the thermohaline circulation. Both models give quite similar net transport, seasonal variations and spatial current structures, and the discrepancies from the observations were related to the coarse representation of the bottom topography in the models. Also the models indicate that actual deployment did not capture the main in- and outflows through the BSX. A snapshot of the hydrographic structure (CTD section) indicates that both models are good at reproducing the salinity. Nevertheless, they react differently to atmospheric cooling, although the same meteorological forcing was applied. This may be due to the different parameterisation of sea ice and that tides were included in only one of the models (ROMS). Proxies for the heat transport are found to be small at the BSX, and it can not be ruled out that the Barents Sea is a heat sink rather than a heat source for the Arctic Ocean. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
