{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:08.456177", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2015-Jun-10_to_2015-Jun-18_294.0_-66.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2015060000355}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "June 10 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 18 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 201022.32679044252}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Antarctica"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Southern-Ocean", "W.Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": ["Southern Ocean"]}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": -66.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 294.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "294.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 285.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 295.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -67.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -61.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-06-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.65, -66.25], [-71.75, -66.0], [-71.54, -65.5], [-71.75, -65.0], [-71.53, -64.47], [-71.0, -64.25], [-70.75, -64.35], [-70.68, -64.32], [-70.53, -63.97], [-70.18, -63.82], [-70.15, -63.75], [-70.25, -63.5], [-70.15, -63.25], [-70.18, -63.18], [-70.53, -63.03], [-70.68, -62.68], [-71.03, -62.53], [-71.25, -62.0], [-71.15, -61.75], [-71.25, -61.5], [-71.03, -60.97], [-70.5, -60.75], [-70.25, -60.85], [-70.0, -60.75], [-69.47, -60.97], [-69.32, -61.32], [-69.25, -61.35], [-69.0, -61.25], [-68.75, -61.35], [-68.5, -61.25], [-67.97, -61.47], [-67.82, -61.82], [-67.75, -61.85], [-67.5, -61.75], [-67.25, -61.85], [-67.0, -61.75], [-66.75, -61.85], [-66.5, -61.75], [-66.25, -61.85], [-66.0, -61.75], [-65.75, -61.85], [-65.5, -61.75], [-65.25, -61.85], [-65.0, -61.75], [-64.47, -61.97], [-64.32, -62.32], [-63.97, -62.47], [-63.75, -63.0], [-63.85, -63.25], [-63.75, -63.5], [-63.85, -63.75], [-63.75, -64.0], [-63.97, -64.53], [-64.32, -64.68], [-64.35, -64.75], [-64.25, -65.0], [-64.47, -65.53], [-64.82, -65.68], [-64.87, -65.8], [-64.75, -65.85], [-64.5, -65.75], [-63.97, -65.97], [-63.75, -66.5], [-63.97, -67.03], [-64.5, -67.25], [-64.75, -67.15], [-64.82, -67.18], [-64.97, -67.53], [-65.5, -67.75], [-66.0, -67.54], [-66.5, -67.75], [-66.75, -67.65], [-67.0, -67.75], [-67.25, -67.65], [-67.5, -67.75], [-68.03, -67.53], [-68.18, -67.18], [-68.25, -67.15], [-68.32, -67.18], [-68.47, -67.53], [-68.82, -67.68], [-68.97, -68.03], [-69.5, -68.25], [-69.75, -68.15], [-70.0, -68.25], [-70.25, -68.15], [-70.5, -68.25], [-71.03, -68.03], [-71.18, -67.68], [-71.53, -67.53], [-71.75, -67.0], [-71.65, -66.75], [-71.75, -66.5], [-71.65, -66.25]]]]}, "2015-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.65, -66.25], [-71.75, -66.0], [-71.54, -65.5], [-71.75, -65.0], [-71.53, -64.47], [-71.0, -64.25], [-70.75, -64.35], [-70.68, -64.32], [-70.53, -63.97], [-70.18, -63.82], [-70.15, -63.75], [-70.25, -63.5], [-70.15, -63.25], [-70.18, -63.18], [-70.53, -63.03], [-70.68, -62.68], [-71.03, -62.53], [-71.25, -62.0], [-71.15, -61.75], [-71.25, -61.5], [-71.03, -60.97], [-70.5, -60.75], [-70.25, -60.85], [-70.0, -60.75], [-69.47, -60.97], [-69.32, -61.32], [-69.25, -61.35], [-69.0, -61.25], [-68.75, -61.35], [-68.5, -61.25], [-67.97, -61.47], [-67.82, -61.82], [-67.75, -61.85], [-67.5, -61.75], [-67.25, -61.85], [-67.0, -61.75], [-66.75, -61.85], [-66.5, -61.75], [-66.25, -61.85], [-66.0, -61.75], [-65.75, -61.85], [-65.5, -61.75], [-65.25, -61.85], [-65.0, -61.75], [-64.47, -61.97], [-64.32, -62.32], [-63.97, -62.47], [-63.75, -63.0], [-63.85, -63.25], [-63.75, -63.5], [-63.85, -63.75], [-63.75, -64.0], [-63.97, -64.53], [-64.32, -64.68], [-64.35, -64.75], [-64.25, -65.0], [-64.47, -65.53], [-64.82, -65.68], [-64.87, -65.8], [-64.75, -65.85], [-64.5, -65.75], [-63.97, -65.97], [-63.75, -66.5], [-63.97, -67.03], [-64.5, -67.25], [-64.75, -67.15], [-64.82, -67.18], [-64.97, -67.53], [-65.5, -67.75], [-66.0, -67.54], [-66.5, -67.75], [-66.75, -67.65], [-67.0, -67.75], [-67.25, -67.65], [-67.5, -67.75], [-68.03, -67.53], [-68.18, -67.18], [-68.25, -67.15], [-68.32, -67.18], [-68.47, -67.53], [-68.82, -67.68], [-68.97, -68.03], [-69.5, -68.25], [-69.75, -68.15], [-70.0, -68.25], [-70.25, -68.15], [-70.5, -68.25], [-71.03, -68.03], [-71.18, -67.68], [-71.53, -67.53], [-71.75, -67.0], [-71.65, -66.75], [-71.75, -66.5], [-71.65, -66.25]]]]}, "2015-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.65, -66.25], [-71.75, -66.0], [-71.54, -65.5], [-71.75, -65.0], [-71.53, -64.47], [-71.0, -64.25], [-70.75, -64.35], [-70.68, -64.32], [-70.53, -63.97], [-70.18, -63.82], [-70.15, -63.75], [-70.25, -63.5], [-70.15, -63.25], [-70.18, -63.18], [-70.53, -63.03], [-70.68, -62.68], [-71.03, -62.53], [-71.25, -62.0], [-71.15, -61.75], [-71.25, -61.5], [-71.03, -60.97], [-70.5, -60.75], [-70.25, -60.85], [-70.0, -60.75], [-69.47, -60.97], [-69.32, -61.32], [-69.25, -61.35], [-69.0, -61.25], [-68.75, -61.35], [-68.5, -61.25], [-67.97, -61.47], [-67.82, -61.82], [-67.75, -61.85], [-67.5, -61.75], [-67.25, -61.85], [-67.0, -61.75], [-66.75, -61.85], [-66.5, -61.75], [-66.25, -61.85], [-66.0, -61.75], [-65.75, -61.85], [-65.5, -61.75], [-65.25, -61.85], [-65.0, -61.75], [-64.47, -61.97], [-64.32, -62.32], [-63.97, -62.47], [-63.75, -63.0], [-63.85, -63.25], [-63.75, -63.5], [-63.85, -63.75], [-63.75, -64.0], [-63.97, -64.53], [-64.32, -64.68], [-64.35, -64.75], [-64.25, -65.0], [-64.47, -65.53], [-64.82, -65.68], [-64.87, -65.8], [-64.75, -65.85], [-64.5, -65.75], [-63.97, -65.97], [-63.75, -66.5], [-63.97, -67.03], [-64.5, -67.25], [-64.75, -67.15], [-64.82, -67.18], [-64.97, -67.53], [-65.5, -67.75], [-66.0, -67.54], [-66.5, -67.75], [-66.75, -67.65], [-67.0, -67.75], [-67.25, -67.65], [-67.5, -67.75], [-68.03, -67.53], [-68.18, -67.18], [-68.25, -67.15], [-68.32, -67.18], [-68.47, -67.53], [-68.82, -67.68], [-68.97, -68.03], [-69.5, -68.25], [-69.75, -68.15], [-70.0, -68.25], [-70.25, -68.15], [-70.5, -68.25], [-71.03, -68.03], [-71.18, -67.68], [-71.53, -67.53], [-71.75, -67.0], [-71.65, -66.75], [-71.75, -66.5], [-71.65, -66.25]]]]}, "2015-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.0, -65.75], [-65.47, -65.97], [-65.25, -66.5], [-65.47, -67.03], [-66.0, -67.25], [-66.53, -67.03], [-66.75, -66.5], [-66.53, -65.97], [-66.0, -65.75]]]]}, "2015-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.0, -65.75], [-65.47, -65.97], [-65.25, -66.5], [-65.47, -67.03], [-66.0, -67.25], [-66.53, -67.03], [-66.75, -66.5], [-66.53, -65.97], [-66.0, -65.75]]]]}, "2015-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.03, -65.53], [-69.25, -65.0], [-69.03, -64.47], [-68.5, -64.25], [-68.25, -64.35], [-68.0, -64.25], [-67.75, -64.35], [-67.5, -64.25], [-66.97, -64.47], [-66.82, -64.82], [-66.75, -64.85], [-66.5, -64.75], [-65.97, -64.97], [-65.82, -65.32], [-65.47, -65.47], [-65.25, -66.0], [-65.35, -66.25], [-65.25, -66.5], [-65.47, -67.03], [-65.82, -67.18], [-65.97, -67.53], [-66.5, -67.75], [-66.75, -67.65], [-67.0, -67.75], [-67.53, -67.53], [-67.7, -67.12], [-68.0, -67.25], [-68.53, -67.03], [-68.75, -66.5], [-68.65, -66.25], [-68.75, -66.0], [-68.62, -65.7], [-69.03, -65.53]], [[-66.75, -66.15], [-66.82, -66.18], [-66.87, -66.3], [-66.75, -66.35], [-66.68, -66.32], [-66.65, -66.25], [-66.68, -66.18], [-66.75, -66.15]]], [[[-66.75, -63.0], [-66.53, -62.47], [-66.0, -62.25], [-65.75, -62.35], [-65.68, -62.32], [-65.53, -61.97], [-65.0, -61.75], [-64.47, -61.97], [-64.32, -62.32], [-63.97, -62.47], [-63.75, -63.0], [-63.97, -63.53], [-64.5, -63.75], [-65.0, -63.54], [-65.5, -63.75], [-65.75, -63.65], [-66.0, -63.75], [-66.53, -63.53], [-66.75, -63.0]]]]}, "2015-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, -66.0], [-74.53, -65.47], [-74.18, -65.32], [-74.03, -64.97], [-73.68, -64.82], [-73.53, -64.47], [-73.18, -64.32], [-73.03, -63.97], [-72.5, -63.75], [-72.25, -63.85], [-72.0, -63.75], [-71.75, -63.85], [-71.5, -63.75], [-71.25, -63.85], [-71.18, -63.82], [-71.03, -63.47], [-70.5, -63.25], [-70.25, -63.35], [-70.0, -63.25], [-69.75, -63.35], [-69.68, -63.32], [-69.53, -62.97], [-69.0, -62.75], [-68.75, -62.85], [-68.68, -62.82], [-68.53, -62.47], [-68.0, -62.25], [-67.75, -62.35], [-67.5, -62.25], [-67.25, -62.35], [-67.0, -62.25], [-66.75, -62.35], [-66.5, -62.25], [-66.25, -62.35], [-66.0, -62.25], [-65.75, -62.35], [-65.68, -62.32], [-65.53, -61.97], [-65.0, -61.75], [-64.47, -61.97], [-64.32, -62.32], [-63.97, -62.47], [-63.75, -63.0], [-63.97, -63.53], [-64.5, -63.75], [-65.0, -63.54], [-65.5, -63.75], [-65.75, -63.65], [-65.82, -63.68], [-65.85, -63.75], [-65.82, -63.82], [-65.47, -63.97], [-65.25, -64.5], [-65.35, -64.75], [-65.32, -64.82], [-64.97, -64.97], [-64.75, -65.5], [-64.97, -66.03], [-65.32, -66.18], [-65.35, -66.25], [-65.25, -66.5], [-65.47, -67.03], [-65.82, -67.18], [-65.97, -67.53], [-66.5, -67.75], [-66.75, -67.65], [-67.0, -67.75], [-67.53, -67.53], [-67.7, -67.12], [-68.0, -67.25], [-68.53, -67.03], [-68.68, -66.68], [-68.75, -66.65], [-69.0, -66.75], [-69.25, -66.65], [-69.5, -66.75], [-69.75, -66.65], [-69.82, -66.68], [-69.97, -67.03], [-70.5, -67.25], [-70.75, -67.15], [-71.0, -67.25], [-71.25, -67.15], [-71.5, -67.25], [-71.75, -67.15], [-72.0, -67.25], [-72.25, -67.15], [-72.37, -67.2], [-72.25, -67.5], [-72.47, -68.03], [-73.0, -68.25], [-73.53, -68.03], [-73.68, -67.68], [-74.03, -67.53], [-74.25, -67.0], [-74.15, -66.75], [-74.18, -66.68], [-74.53, -66.53], [-74.75, -66.0]]]]}, "2015-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, -66.0], [-74.53, -65.47], [-74.18, -65.32], [-74.03, -64.97], [-73.68, -64.82], [-73.53, -64.47], [-73.18, -64.32], [-73.03, -63.97], [-72.5, -63.75], [-72.25, -63.85], [-72.0, -63.75], [-71.75, -63.85], [-71.5, -63.75], [-71.25, -63.85], [-71.18, -63.82], [-71.03, -63.47], [-70.5, -63.25], [-70.25, -63.35], [-70.0, -63.25], [-69.75, -63.35], [-69.68, -63.32], [-69.53, -62.97], [-69.0, -62.75], [-68.75, -62.85], [-68.68, -62.82], [-68.53, -62.47], [-68.0, -62.25], [-67.75, -62.35], [-67.5, -62.25], [-67.25, -62.35], [-67.0, -62.25], [-66.75, -62.35], [-66.5, -62.25], [-66.25, -62.35], [-66.0, -62.25], [-65.75, -62.35], [-65.68, -62.32], [-65.53, -61.97], [-65.0, -61.75], [-64.47, -61.97], [-64.32, -62.32], [-63.97, -62.47], [-63.75, -63.0], [-63.97, -63.53], [-64.5, -63.75], [-65.0, -63.54], [-65.5, -63.75], [-65.75, -63.65], [-65.82, -63.68], [-65.85, -63.75], [-65.82, -63.82], [-65.47, -63.97], [-65.25, -64.5], [-65.35, -64.75], [-65.32, -64.82], [-64.97, -64.97], [-64.75, -65.5], [-64.97, -66.03], [-65.32, -66.18], [-65.35, -66.25], [-65.25, -66.5], [-65.47, -67.03], [-65.82, -67.18], [-65.97, -67.53], [-66.5, -67.75], [-66.75, -67.65], [-67.0, -67.75], [-67.53, -67.53], [-67.7, -67.12], [-68.0, -67.25], [-68.53, -67.03], [-68.68, -66.68], [-68.75, -66.65], [-69.0, -66.75], [-69.25, -66.65], [-69.5, -66.75], [-69.75, -66.65], [-69.82, -66.68], [-69.97, -67.03], [-70.5, -67.25], [-70.75, -67.15], [-71.0, -67.25], [-71.25, -67.15], [-71.5, -67.25], [-71.75, -67.15], [-72.0, -67.25], [-72.25, -67.15], [-72.37, -67.2], [-72.25, -67.5], [-72.47, -68.03], [-73.0, -68.25], [-73.53, -68.03], [-73.68, -67.68], [-74.03, -67.53], [-74.25, -67.0], [-74.15, -66.75], [-74.18, -66.68], [-74.53, -66.53], [-74.75, -66.0]]]]}, "2015-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, -66.0], [-74.53, -65.47], [-74.18, -65.32], [-74.03, -64.97], [-73.68, -64.82], [-73.53, -64.47], [-73.18, -64.32], [-73.03, -63.97], [-72.5, -63.75], [-72.25, -63.85], [-72.0, -63.75], [-71.75, -63.85], [-71.5, -63.75], [-71.25, -63.85], [-71.18, -63.82], [-71.03, -63.47], [-70.5, -63.25], [-70.25, -63.35], [-70.0, -63.25], [-69.75, -63.35], [-69.68, -63.32], [-69.53, -62.97], [-69.0, -62.75], [-68.75, -62.85], [-68.68, -62.82], [-68.53, -62.47], [-68.0, -62.25], [-67.75, -62.35], [-67.5, -62.25], [-67.25, -62.35], [-67.0, -62.25], [-66.75, -62.35], [-66.5, -62.25], [-66.25, -62.35], [-66.0, -62.25], [-65.47, -62.47], [-65.25, -63.0], [-65.47, -63.53], [-65.82, -63.68], [-65.85, -63.75], [-65.82, -63.82], [-65.47, -63.97], [-65.25, -64.5], [-65.35, -64.75], [-65.32, -64.82], [-64.97, -64.97], [-64.75, -65.5], [-64.97, -66.03], [-65.37, -66.2], [-65.25, -66.5], [-65.47, -67.03], [-66.0, -67.25], [-66.25, -67.15], [-66.5, -67.25], [-66.75, -67.15], [-67.0, -67.25], [-67.53, -67.03], [-67.75, -66.5], [-67.62, -66.2], [-67.75, -66.15], [-67.82, -66.18], [-67.97, -66.53], [-68.5, -66.75], [-68.75, -66.65], [-69.0, -66.75], [-69.25, -66.65], [-69.5, -66.75], [-69.75, -66.65], [-69.82, -66.68], [-69.97, -67.03], [-70.5, -67.25], [-70.75, -67.15], [-71.0, -67.25], [-71.25, -67.15], [-71.5, -67.25], [-71.75, -67.15], [-72.0, -67.25], [-72.25, -67.15], [-72.37, -67.2], [-72.25, -67.5], [-72.47, -68.03], [-73.0, -68.25], [-73.53, -68.03], [-73.68, -67.68], [-74.03, -67.53], [-74.25, -67.0], [-74.15, -66.75], [-74.18, -66.68], [-74.53, -66.53], [-74.75, -66.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -11.87295986677367}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.610404202798973}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-11.073796859803508, -12.979762545770939, -11.839340178238842, -13.588333895395124, -13.016056301653634, -10.388342331813476, -11.89083924591796, -13.122724060886355, -11.12005745720063]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-26.90682325032671, -29.692949300882418, -26.60729038327645, -13.588333895395124, -13.016056301653634, -15.97965378208795, -16.68890168873662, -18.18257969357731, -15.844038821520428]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.809613591734257, -8.606907013980136, -7.373894731209376, -7.038424643290398, -6.507035834681346, -5.535755224248328, -7.5391922446053, -8.802778439728604, -6.843375084569271]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.380866486667855, -11.87295986677367, -10.00094393513092, -7.038424643290398, -6.507035834681346, -7.820297858499316, -11.262180875696345, -11.270925720636626, -9.56319349469203]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6676633221280495, -2.112120242513992, -1.8079461834830746, -1.7187972656303718, -1.6695380569283207, -1.3812756614954724, -1.6836495797116, -2.054004612922685, -1.6165181944009508]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0983418768781994, -2.563645314440092, -2.287972880975659, -1.7187972656303718, -1.6695380569283207, -1.9884678526073332, -2.3328303973888858, -2.5575840639889558, -2.125912822517291]}}