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ZENODO
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ZENODO
Dataset . 2021
License: CC BY
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NAPv1.0: A seasonal hydrographic gridded data set for the Northern Antarctic Peninsula, Southern Ocean

Authors: Dotto, Tiago S.; Kerr, Rodrigo; Mata, Mauricio M.; Garcia, Carlos A. E.;

NAPv1.0: A seasonal hydrographic gridded data set for the Northern Antarctic Peninsula, Southern Ocean

Abstract

The Northern Antarctic Peninsula (NAP) climatology version 1 (NAPv1.0) was built by optimally interpolate hydrographic data sets from the CTD, MEOP and Argo floats profiles sampled in the NAP and adjacent regions during the period of 1990-2019. The database consists of data from the World Ocean Database, Pangaea, Hutchinson et al. (2020), Brazilian High Latitude Oceanography Group (GOAL; http://goal.furg.br/), Marine Mammals Exploring the Oceans Pole to Pole consortium (MEOP), and Argo floats. The climatology has outputs for summer (Jan-Mar), autumn (Apr-Jun), winter (Jul-Sep) and spring (Oct-Dec). The profiles were first linearly interpolated onto 90 depth levels, and then optimally interpolated in space using a grid of ~10 km resolution. The grid spacing is 0.09˚ along latitudes and 0.2˚ along longitudes (i.e., 0.09˚ latitude x 0.09˚/cos(63˚S) longitude, where 63˚S is the mean latitude of our domain). A series of tests were made to find the appropriate smoothing lengthscale and the a priori relative error in order to find a balance between smoothness and feature representativeness. The final smoothing lengthscale (i.e. the radius of influence of the interpolation) chosen was 1˚ in latitude and longitude, and the a priori relative error allowed was set to 0.2 for the objective interpolation algorithm. The same constants were set for all depth levels and all variables. The regions where the mapping relative error was higher than 0.5 were excluded. The NAPv1.0 climatology can be used for several applications, including input data for ocean and climate models initialization/assessment and ocean reanalysis evaluation, as well as to produce and reconstruct biogeochemical properties. The NAPv1.0 climatology represents the ocean mean-state for the NAP for the end of the 20th and early 21st-century. Reference: Dotto, T. S., Mata, M. M., Kerr, R., and Garcia, C. A. E.: A novel hydrographic gridded data set for the northern Antarctic Peninsula, Earth Syst. Sci. Data, 13, 671–696, https://doi.org/10.5194/essd-13-671-2021, 2021.

{"references": ["Kerr, R., Mata, M. M., Mendes, C. R. B. and Sechhi, E. R. (2018). Northern Antarctic Peninsula: a marine climate hotspot of rapid changes on ecosystems and ocean dynamics, Deep Sea Research Part II, 149, 4\u20139, doi: 10.1016/j.dsr2.2018.05.006.", "Mata, M. M., Tavano, V. M. and Garcia, C. A. E. (2018). 15 years sailing with the Brazilian High Latitude Oceanography Group (GOAL), Deep Sea Research Part II, 149, 1-3, doi: 10.1016/j.dsr2.2018.05.007.", "Hutchinson, K., Deshayes, J., Sallee, J.\u2010B., Dowdeswell, J. A., de Lavergne, C., Ansorge, I., et al. (2020). Water mass characteristics and distribution adjacent to Larsen C Ice Shelf, Antarctica. Journal of Geophysical Research: Oceans, 125, e2019JC015855. doi: 10.1029/2019JC015855.", "Dotto, T. S., Mata, M. M., Kerr, R., and Garcia, C. A. E. (2021). A novel hydrographic gridded data set for the northern Antarctic Peninsula, Earth Syst. Sci. Data, 13, 671\u2013696, https://doi.org/10.5194/essd-13-671-2021"]}

The NAPv1.0 climatology was created by the Brazilian High Latitude Oceanography Group (GOAL). If you want to contact the GOAL group, please, visit https://www.goal.furg.br/ or send us an email at rodrigokerr@furg.br, mauricio.mata@furg.br or dfsgar@furg.br

Keywords

Southern Ocean, Northern Antarctic Peninsula, Climatology, Hydrography, 21st-Century

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