Arctic Ocean freshwater dynamics: transient response to increasing river runoff and precipitation [dataset]

• Main Authors: Brown, Nicola, Nilsson, Johan, Pemberton, Per
• Format: Dataset
• Language: English
• Published: Zenodo 2019
• Subjects: Arctic; Arctic Ocean; Barents Sea; Bering Strait; Canadian Arctic Archipelago; Nares; Amundsen Gulf; Arctic Archipelago; Fram Strait; Nares strait; Sea ice
• Online Access: https://dx.doi.org/10.5281/zenodo.2648763; https://zenodo.org/record/2648763

This dataset contains the underlying data for the manuscript Brown et al., Arctic Ocean freshwater dynamics: transient response to increasing river runoff and precipitation, submitted to JGR-Oceans ----------------------------------- Descriptors in the filenames, shown below as *, correspond to the various simulations, as follows: Simulations forced with JRA-25 reanalysis data: AR: Unperturbed control simulation B1: Simulation involving a step change in river runoff of -30% C1: Simulation involving a step change in river runoff of +30% B7: Simulation involving a step change in precipitation of -30% C8: Simulation involving a step change in precipitation of +30% Simulations forced with the CORE-II climatology: AR_CORE: Unperturbed control simulation P-30_CORE: Simulation involving a step change in precipitation of -30% P+30_CORE: Simulation involving a step change in precipitation of +30% ----------------------------------- The files named as fwvolume_Sref35_*.nc contain the variables: freshwater: horizontally-integrated liquid freshwater volume in m^3 freshwater_pos: as before, but including only positive values in the integration h_f: basin-mean freshwater height in m h_f_pos: as before, but including only positive values in the integration The reference salinity used in each case is 35. ----------------------------------- The files named as freshwater_h_f_*.nc contain horizontally-gridded, depth-integrated liquid freshwater heights in m. The integration is made to a depth of 276.68m. h_f_34p8: freshwater height, using a reference salinity of 34.8 h_f_34p8_pos: as before, but including only positive values in the integration h_f_35: freshwater height, using a reference salinity of 35 h_f_35_pos: as before, but including only positive values in the integration The grid for these files is grid.nc ----------------------------------- The files named as fluxes_ed3_*.nc contain strait-integrated volume fluxes (in m^3 s^-1) into and out of the Arctic domain: f: liquid volume flux fw: freshwater, with variables numbered 1 using a reference salinity of 34.8 and those numbered 2 using a reference salinity of 35 ice: sea ice volume flux The first dimension, ngate, of the variables indicates the strait: 1) Fram Strait 2) Barents Sea Opening 3) Bering Strait 4) Amundsen Gulf 5) McClure Strait 6) Canadian Arctic Archipelago 7) Nares Strait ----------------------------------- Sea ice volumes (in m^3) for the JRA-25 forced simulations are contained in the files named area_int_*.nc with variable name "ivol" ----------------------------------- Basin-integrated liquid freshwater volumes for a further series of JRA-forced runoff perturbation experiments are contained within the file FWLvol_AO_Sref35_runoff.mat: R_10: a step increase in runoff of 10% R_60: a step increase in runoff of 60% R_100: a step increase in runoff of 100% The reference salinity is 35 and depth of integration 276.68m