edu.ucar.opensky::articles:21220 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T16:10:39.719827 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d78p6358 https://doi.org/10.5065/D64747WN https Related Dataset #1 ERA-Interim Project, Single Parameter 6-Hourly Surface Analysis and Surface Forecast Time Series https://doi.org/10.5067/J6JQLS9EJ5HU https Related Dataset #2 Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS, Version 2 https://doi.org/10.5065/D6JQ0ZRK https Related Dataset #3 CESM1 Fixed Ozone Ensemble Stratospheric ozone depletion: An unlikely driver of the regional trends in Antarctic sea ice in Austral fall in the late twentieth century 2017-11-16T00:00:00Z publication https://n2t.org/ark:/85065/d78p6358 https://doi.org/10.1002/2017GL075618 Landrum, Laura author Holland, Marika M. author Raphael, M. N. author Polvani, Lorenzo author UCAR/NCAR - Library publisher It has been suggested that recent regional trends in Antarctic sea ice might have been caused by the formation of the ozone hole in the late twentieth century. Here we explore this by examining two ensembles of a climate model over the ozone hole formation period (1955-2005). One ensemble includes all known historical forcings; the other is identical except for ozone levels, which are fixed at 1955 levels. We demonstrate that the model is able to capture, on interannual and decadal timescales, the observed statistical relationship between summer Amundsen Sea Low strength (when ozone loss causes a robust deepening) and fall sea ice concentrations (when observed trends are largest). In spite of this, the modeled regional trends caused by ozone depletion are found to be almost exactly opposite to the observed ones. We deduce that the regional character of observed sea ice trends is likely not caused by ozone depletion. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2017 American Geophysical Union. None eng geoscientificInformation