{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:34.785434", "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": "2012-Oct-12_to_2012-Oct-14_293.5_47.0"}, "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": 2012100000505}, "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": "October 12 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 14 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 58369.11605083671}, "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": ["Canada", "United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North America"]}, "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": ["Gulf of St. Lawrence"]}, "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": 47.0}, "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": 293.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "293.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 290.25}, "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": 45.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-10-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.18, 47.18], [-69.15, 47.25], [-69.25, 47.5], [-69.03, 48.03], [-68.68, 48.18], [-68.53, 48.53], [-68.0, 48.75], [-67.75, 48.65], [-67.5, 48.75], [-67.25, 48.65], [-67.18, 48.68], [-67.03, 49.03], [-66.5, 49.25], [-66.25, 49.15], [-66.0, 49.25], [-65.75, 49.15], [-65.5, 49.25], [-65.25, 49.15], [-65.0, 49.25], [-64.75, 49.15], [-64.5, 49.25], [-63.97, 49.03], [-63.75, 48.5], [-63.97, 47.97], [-64.32, 47.82], [-64.35, 47.75], [-64.25, 47.5], [-64.46, 47.0], [-64.25, 46.5], [-64.47, 45.97], [-65.0, 45.75], [-65.53, 45.97], [-65.68, 46.32], [-65.75, 46.35], [-66.0, 46.25], [-66.25, 46.35], [-66.5, 46.25], [-66.75, 46.35], [-67.0, 46.25], [-67.53, 46.47], [-67.68, 46.82], [-67.75, 46.85], [-67.82, 46.82], [-67.97, 46.47], [-68.32, 46.32], [-68.47, 45.97], [-68.82, 45.82], [-68.97, 45.47], [-69.5, 45.25], [-70.03, 45.47], [-70.25, 46.0], [-70.03, 46.53], [-69.68, 46.68], [-69.53, 47.03], [-69.18, 47.18]]]]}, "2012-10-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.18, 47.18], [-69.15, 47.25], [-69.25, 47.5], [-69.03, 48.03], [-68.68, 48.18], [-68.53, 48.53], [-68.0, 48.75], [-67.75, 48.65], [-67.5, 48.75], [-67.25, 48.65], [-67.18, 48.68], [-67.03, 49.03], [-66.5, 49.25], [-66.25, 49.15], [-66.0, 49.25], [-65.75, 49.15], [-65.5, 49.25], [-65.25, 49.15], [-65.0, 49.25], [-64.75, 49.15], [-64.5, 49.25], [-63.97, 49.03], [-63.75, 48.5], [-63.97, 47.97], [-64.32, 47.82], [-64.35, 47.75], [-64.25, 47.5], [-64.46, 47.0], [-64.25, 46.5], [-64.47, 45.97], [-65.0, 45.75], [-65.53, 45.97], [-65.68, 46.32], [-65.75, 46.35], [-66.0, 46.25], [-66.25, 46.35], [-66.5, 46.25], [-66.75, 46.35], [-67.0, 46.25], [-67.53, 46.47], [-67.68, 46.82], [-67.75, 46.85], [-67.82, 46.82], [-67.97, 46.47], [-68.32, 46.32], [-68.47, 45.97], [-68.82, 45.82], [-68.97, 45.47], [-69.5, 45.25], [-70.03, 45.47], [-70.25, 46.0], [-70.03, 46.53], [-69.68, 46.68], [-69.53, 47.03], [-69.18, 47.18]]]]}, "2012-10-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.18, 47.18], [-69.15, 47.25], [-69.25, 47.5], [-69.03, 48.03], [-68.68, 48.18], [-68.53, 48.53], [-68.0, 48.75], [-67.75, 48.65], [-67.5, 48.75], [-67.25, 48.65], [-67.18, 48.68], [-67.03, 49.03], [-66.5, 49.25], [-66.25, 49.15], [-66.0, 49.25], [-65.75, 49.15], [-65.5, 49.25], [-65.25, 49.15], [-65.0, 49.25], [-64.75, 49.15], [-64.5, 49.25], [-63.97, 49.03], [-63.75, 48.5], [-63.97, 47.97], [-64.32, 47.82], [-64.35, 47.75], [-64.25, 47.5], [-64.46, 47.0], [-64.25, 46.5], [-64.47, 45.97], [-65.0, 45.75], [-65.53, 45.97], [-65.68, 46.32], [-65.75, 46.35], [-66.0, 46.25], [-66.25, 46.35], [-66.5, 46.25], [-66.75, 46.35], [-67.0, 46.25], [-67.53, 46.47], [-67.68, 46.82], [-67.75, 46.85], [-67.82, 46.82], [-67.97, 46.47], [-68.32, 46.32], [-68.47, 45.97], [-68.82, 45.82], [-68.97, 45.47], [-69.5, 45.25], [-70.03, 45.47], [-70.25, 46.0], [-70.03, 46.53], [-69.68, 46.68], [-69.53, 47.03], [-69.18, 47.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.962558272980914}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.074088632467308}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.8842799935039807, 1.1723723061212468, 1.2751396885833515]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.6485075151932733, -0.586970659980409, -0.7462511084673906]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.851090771094753, -5.328126050249507, -5.043049076057664]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.524446499139117, -6.361246227717174, -6.962558272980914]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4570347189734736, -1.611604826830007, -1.5187299787933155]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.588903305641479, -1.8975364612040362, -1.8943063091546322]}}