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9 results on '"Janekovic, I"'

3. Tropical Cyclone Modeling With the Inclusion of Wave-Coupled Processes: Sea Spray and Wave Turbulence

Author

Xu, X, Voermans, JJ, Zhang, W, Zhao, B, Qiao, F, Liu, Q, Moon, I-J, Janekovic, I, Waseda, T, Babanin, AV, Xu, X, Voermans, JJ, Zhang, W, Zhao, B, Qiao, F, Liu, Q, Moon, I-J, Janekovic, I, Waseda, T, and Babanin, AV

Abstract

Waves critically modulate the air‐sea fluxes, and upper‐ocean thermodynamics in a Tropical Cyclone (TC) system. This study improves the modeling of TC intensification by incorporating non‐breaking wave‐induced turbulence and sea spray from breaking waves into an atmosphere‐ocean‐wave coupled model. Notably, wind forecast error decreased by around 10% prior to TCs' peak intensity. The positive feedback of sea spray along with compensatory negative feedback from non‐breaking waves, overall enhanced TCs' intensity. These breaking and non‐breaking wave‐coupled processes consistently cool sea surface temperature, resulting in improvement of the modeled SST. Observed improvements in full‐year TC cases ranging from Categories I to IV in this study suggest that an accurate characterization of ocean wave‐coupled processes is crucial for improving TCs' intensity forecasts and advancing our understanding of severe weather events in both, the atmosphere and ocean.

Published
2023

5. A standardisation framework for bio‐logging data to advance ecological research and conservation

Author

Sequeira, A.M.M., O'Toole, M., Keates, T.R., McDonnell, L.H., Braun, C.D., Hoenner, X., Jaine, F.R.A., Jonsen, I.D., Newman, P., Pye, J., Bograd, S.J., Hays, G.C., Hazen, E.L., Holland, M., Tsontos, V.M., Blight, C., Cagnacci, F., Davidson, S.C., Dettki, H., Duarte, C.M., Dunn, D.C., Eguíluz, V.M., Fedak, M., Gleiss, A.C., Hammerschlag, N., Hindell, M.A., Holland, K., Janekovic, I., McKinzie, M.K., Muelbert, M.M.C., Pattiaratchi, C., Rutz, C., Sims, D.W., Simmons, S.E., Townsend, B., Whoriskey, F., Woodward, B., Costa, D.P., Heupel, M.R., McMahon, C.R., Harcourt, R., Weise, M., Codling, E., Sequeira, A.M.M., O'Toole, M., Keates, T.R., McDonnell, L.H., Braun, C.D., Hoenner, X., Jaine, F.R.A., Jonsen, I.D., Newman, P., Pye, J., Bograd, S.J., Hays, G.C., Hazen, E.L., Holland, M., Tsontos, V.M., Blight, C., Cagnacci, F., Davidson, S.C., Dettki, H., Duarte, C.M., Dunn, D.C., Eguíluz, V.M., Fedak, M., Gleiss, A.C., Hammerschlag, N., Hindell, M.A., Holland, K., Janekovic, I., McKinzie, M.K., Muelbert, M.M.C., Pattiaratchi, C., Rutz, C., Sims, D.W., Simmons, S.E., Townsend, B., Whoriskey, F., Woodward, B., Costa, D.P., Heupel, M.R., McMahon, C.R., Harcourt, R., Weise, M., and Codling, E.

Abstract

Bio‐logging data obtained by tagging animals are key to addressing global conservation challenges. However, the many thousands of existing bio‐logging datasets are not easily discoverable, universally comparable, nor readily accessible through existing repositories and across platforms, slowing down ecological research and effective management. A set of universal standards is needed to ensure discoverability, interoperability and effective translation of bio‐logging data into research and management recommendations. We propose a standardisation framework adhering to existing data principles (FAIR: Findable, Accessible, Interoperable and Reusable; and TRUST: Transparency, Responsibility, User focus, Sustainability and Technology) and involving the use of simple templates to create a data flow from manufacturers and researchers to compliant repositories, where automated procedures should be in place to prepare data availability into four standardised levels: (a) decoded raw data, (b) curated data, (c) interpolated data and (d) gridded data. Our framework allows for integration of simple tabular arrays (e.g. csv files) and creation of sharable and interoperable network Common Data Form (netCDF) files containing all the needed information for accuracy‐of‐use, rightful attribution (ensuring data providers keep ownership through the entire process) and data preservation security. We show the standardisation benefits for all stakeholders involved, and illustrate the application of our framework by focusing on marine animals and by providing examples of the workflow across all data levels, including filled templates and code to process data between levels, as well as templates to prepare netCDF files ready for sharing. Adoption of our framework will facilitate collection of Essential Ocean Variables (EOVs) in support of the Global Ocean Observing System (GOOS) and inter‐governmental assessments (e.g. the World Ocean Assessment), and will provide a starting point for broader

Published
2021

6. A standardisation framework for bio-logging data to advance ecological research and conservation

Author

Sequeira, AMM, O'Toole, M, Keates, TR, McDonnell, LH, Braun, CD, Hoenner, X, Jaine, FRA, Jonsen, ID, Newman, P, Pye, J, Bograd, SJ, Hays, Graeme, Hazen, EL, Holland, M, Tsontos, VM, Blight, C, Cagnacci, F, Davidson, SC, Dettki, H, Duarte, CM, Dunn, DC, Eguíluz, VM, Fedak, M, Gleiss, AC, Hammerschlag, N, Hindell, MA, Holland, K, Janekovic, I, McKinzie, MK, Muelbert, MMC, Pattiaratchi, C, Rutz, C, Sims, DW, Simmons, SE, Townsend, B, Whoriskey, F, Woodward, B, Costa, DP, Heupel, MR, McMahon, CR, Harcourt, R, Weise, M, Sequeira, AMM, O'Toole, M, Keates, TR, McDonnell, LH, Braun, CD, Hoenner, X, Jaine, FRA, Jonsen, ID, Newman, P, Pye, J, Bograd, SJ, Hays, Graeme, Hazen, EL, Holland, M, Tsontos, VM, Blight, C, Cagnacci, F, Davidson, SC, Dettki, H, Duarte, CM, Dunn, DC, Eguíluz, VM, Fedak, M, Gleiss, AC, Hammerschlag, N, Hindell, MA, Holland, K, Janekovic, I, McKinzie, MK, Muelbert, MMC, Pattiaratchi, C, Rutz, C, Sims, DW, Simmons, SE, Townsend, B, Whoriskey, F, Woodward, B, Costa, DP, Heupel, MR, McMahon, CR, Harcourt, R, and Weise, M

Published
2021

8. February 2003 marine atmospheric conditions and the bora over the northern Adriatic

Author

Dorman C.E.(1), Carniel S.(2), Cavaleri L.(2), Sclavo M.(2), Chiggiato J.(3), Doyle J.(4), Haack T.(4), Pullen J.(4), Grbec B.(5), Vilibic I.(5), Janekovic I.(6), Lee C.(7), Malacic V.(8), Orlic M.(9), Paschini E.(10), Russo A.(11), and Signell R.P.(12)

Subjects
Adriatic, bora
Abstract

A winter oceanographic field experiment provided an opportunity to examine the atmospheric marine conditions over the northern Adriatic. Mean February winds are from a north-easterly direction over most of the Adriatic and more northerly along the western coast. Wind speeds are fastest in jets over the NE coast during bora events and weakest in the mid-north-western Adriatic. Diurnal air temperature cycles are smallest on the NE coast and largest in the mid-western Adriatic. The maximum sea-air difference is +10 degrees C on the eastern coast and near zero on the mid-western Adriatic. Boras are north-easterly wind events that sweep off Croatia and Slovenia, bringing slightly colder and drier air over the northern Adriatic. Bora season is from December to March. Winter 2002–2003 was normal for bora events. Synoptic-scale temporal variations are correlated over the northern Adriatic. Wind stress is concentrated over the NE half of Adriatic in four bora jets, and weak in the NW Adriatic. There is significant variation in wind stress mean and standard deviation structure over the northern Adriatic with each bora event.

Published
2006

9. Substantial kelp detritus exported beyond the continental shelf by dense shelf water transport.

Author

van der Mheen M, Wernberg T, Pattiaratchi C, Pessarrodona A, Janekovic I, Simpkins T, Hovey R, and Filbee-Dexter K

Abstract

Kelp forests may contribute substantially to ocean carbon sequestration, mainly through transporting kelp carbon away from the coast and into the deep sea. However, it is not clear if and how kelp detritus is transported across the continental shelf. Dense shelf water transport (DSWT) is associated with offshore flows along the seabed and provides an effective mechanism for cross-shelf transport. In this study, we determine how effective DSWT is in exporting kelp detritus beyond the continental shelf edge, by considering the transport of simulated sinking kelp detritus from a region of Australia's Great Southern Reef. We show that DSWT is the main mechanism that transports simulated kelp detritus past the continental shelf edge, and that export is negligible when DSWT does not occur. We find that 51% per year of simulated kelp detritus is transported past the continental shelf edge, or 17-29% when accounting for decomposition while in transit across the shelf. This is substantially more than initial global estimates. Because DSWT occurs in many mid-latitude locations around the world, where kelp forests are also most productive, export of kelp carbon from the coast could be considerably larger than initially expected., (© 2024. The Author(s).)

Published
2024
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