{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:37.586528", "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": "2013-Jun-27_to_2013-Jun-30_290.5_64.5"}, "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": 2013060001149}, "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 27 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 30 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 69143.5758905615}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": ["Hudson Strait"]}, "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": 64.5}, "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": 290.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "290.5\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": 292.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 62.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 66.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, 65.0], [-74.53, 65.53], [-74.0, 65.75], [-73.75, 65.65], [-73.68, 65.68], [-73.53, 66.03], [-73.18, 66.18], [-73.03, 66.53], [-72.5, 66.75], [-72.25, 66.65], [-72.0, 66.75], [-71.75, 66.65], [-71.5, 66.75], [-70.97, 66.53], [-70.82, 66.18], [-70.75, 66.15], [-70.5, 66.25], [-69.97, 66.03], [-69.82, 65.68], [-69.75, 65.65], [-69.5, 65.75], [-69.25, 65.65], [-69.0, 65.75], [-68.75, 65.65], [-68.5, 65.75], [-67.97, 65.53], [-67.82, 65.18], [-67.47, 65.03], [-67.25, 64.5], [-67.35, 64.25], [-67.25, 64.0], [-67.47, 63.47], [-68.0, 63.25], [-68.25, 63.35], [-68.5, 63.25], [-68.75, 63.35], [-69.0, 63.25], [-69.25, 63.35], [-69.32, 63.32], [-69.35, 63.25], [-69.25, 63.0], [-69.47, 62.47], [-70.0, 62.25], [-70.25, 62.35], [-70.5, 62.25], [-70.75, 62.35], [-71.0, 62.25], [-71.25, 62.35], [-71.5, 62.25], [-72.03, 62.47], [-72.25, 63.0], [-72.15, 63.25], [-72.18, 63.32], [-72.25, 63.35], [-72.5, 63.25], [-73.03, 63.47], [-73.18, 63.82], [-73.25, 63.85], [-73.5, 63.75], [-74.03, 63.97], [-74.18, 64.32], [-74.53, 64.47], [-74.75, 65.0]]]]}, "2013-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, 65.0], [-74.53, 65.53], [-74.0, 65.75], [-73.75, 65.65], [-73.68, 65.68], [-73.53, 66.03], [-73.18, 66.18], [-73.03, 66.53], [-72.5, 66.75], [-72.25, 66.65], [-72.0, 66.75], [-71.75, 66.65], [-71.5, 66.75], [-70.97, 66.53], [-70.82, 66.18], [-70.75, 66.15], [-70.5, 66.25], [-69.97, 66.03], [-69.82, 65.68], [-69.75, 65.65], [-69.5, 65.75], [-69.25, 65.65], [-69.0, 65.75], [-68.75, 65.65], [-68.5, 65.75], [-67.97, 65.53], [-67.82, 65.18], [-67.47, 65.03], [-67.32, 64.68], [-66.97, 64.53], [-66.75, 64.0], [-66.97, 63.47], [-67.5, 63.25], [-67.75, 63.35], [-68.0, 63.25], [-68.25, 63.35], [-68.5, 63.25], [-68.75, 63.35], [-69.0, 63.25], [-69.25, 63.35], [-69.32, 63.32], [-69.35, 63.25], [-69.25, 63.0], [-69.47, 62.47], [-70.0, 62.25], [-70.25, 62.35], [-70.5, 62.25], [-70.75, 62.35], [-71.0, 62.25], [-71.25, 62.35], [-71.5, 62.25], [-72.03, 62.47], [-72.25, 63.0], [-72.15, 63.25], [-72.18, 63.32], [-72.25, 63.35], [-72.5, 63.25], [-73.03, 63.47], [-73.18, 63.82], [-73.25, 63.85], [-73.5, 63.75], [-74.03, 63.97], [-74.18, 64.32], [-74.53, 64.47], [-74.75, 65.0]]]]}, "2013-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, 65.0], [-74.53, 65.53], [-74.0, 65.75], [-73.75, 65.65], [-73.68, 65.68], [-73.53, 66.03], [-73.18, 66.18], [-73.03, 66.53], [-72.5, 66.75], [-72.25, 66.65], [-72.0, 66.75], [-71.75, 66.65], [-71.5, 66.75], [-70.97, 66.53], [-70.82, 66.18], [-70.75, 66.15], [-70.5, 66.25], [-69.97, 66.03], [-69.82, 65.68], [-69.75, 65.65], [-69.5, 65.75], [-69.25, 65.65], [-69.0, 65.75], [-68.75, 65.65], [-68.5, 65.75], [-67.97, 65.53], [-67.82, 65.18], [-67.47, 65.03], [-67.32, 64.68], [-66.97, 64.53], [-66.75, 64.0], [-66.97, 63.47], [-67.5, 63.25], [-67.75, 63.35], [-68.0, 63.25], [-68.25, 63.35], [-68.5, 63.25], [-68.75, 63.35], [-69.0, 63.25], [-69.25, 63.35], [-69.32, 63.32], [-69.35, 63.25], [-69.25, 63.0], [-69.47, 62.47], [-70.0, 62.25], [-70.25, 62.35], [-70.5, 62.25], [-70.75, 62.35], [-71.0, 62.25], [-71.25, 62.35], [-71.5, 62.25], [-72.03, 62.47], [-72.25, 63.0], [-72.15, 63.25], [-72.18, 63.32], [-72.25, 63.35], [-72.5, 63.25], [-73.03, 63.47], [-73.18, 63.82], [-73.25, 63.85], [-73.5, 63.75], [-74.03, 63.97], [-74.18, 64.32], [-74.53, 64.47], [-74.75, 65.0]]]]}, "2013-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.03, 63.97], [-70.25, 64.5], [-70.03, 65.03], [-69.5, 65.25], [-69.25, 65.15], [-69.18, 65.18], [-69.03, 65.53], [-68.5, 65.75], [-67.97, 65.53], [-67.82, 65.18], [-67.47, 65.03], [-67.32, 64.68], [-66.97, 64.53], [-66.75, 64.0], [-66.97, 63.47], [-67.5, 63.25], [-67.75, 63.35], [-68.0, 63.25], [-68.53, 63.47], [-68.68, 63.82], [-68.75, 63.85], [-69.0, 63.75], [-69.25, 63.85], [-69.5, 63.75], [-70.03, 63.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.556339375179562}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.613562275559578}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.188901502148724, 2.731369589035012, 2.594845779671232, 1.840882738664675]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.5198200256740506, 0.2319487229745505, 0.7903888899977574, 0.567203308748617]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.5294905722129535, -4.365353253772694, -4.926327214532152, -4.746526443705501]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.779288353884851, -5.330015870137743, -6.556339375179562, -5.159984613519839]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5600199641571606, -1.482269004238605, -1.680941186728704, -1.5130678277346732]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8131972877687392, -1.6908918161059918, -2.068821123554405, -1.633482964857909]}}