{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:51:57.861201", "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": "2023-Mar-04_to_2023-Mar-07_272.5_48.5"}, "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": 2023030001412}, "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": "March 04 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 07 2023"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 56162.76947311376}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": []}, "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": 48.5}, "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": 272.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "272.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 270.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 275.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-90.53, 48.03], [-90.0, 48.25], [-89.75, 48.15], [-89.5, 48.25], [-89.25, 48.15], [-89.18, 48.18], [-89.15, 48.25], [-89.25, 48.5], [-89.03, 49.03], [-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97, 49.03], [-85.82, 48.68], [-85.75, 48.65], [-85.5, 48.75], [-84.97, 48.53], [-84.82, 48.18], [-84.47, 48.03], [-84.25, 47.5], [-84.35, 47.25], [-84.25, 47.0], [-84.47, 46.47], [-85.0, 46.25], [-85.25, 46.35], [-85.5, 46.25], [-85.75, 46.35], [-86.0, 46.25], [-86.25, 46.35], [-86.5, 46.25], [-86.75, 46.35], [-87.0, 46.25], [-87.25, 46.35], [-87.5, 46.25], [-88.03, 46.47], [-88.25, 47.0], [-88.15, 47.25], [-88.18, 47.32], [-88.25, 47.35], [-88.32, 47.32], [-88.47, 46.97], [-89.0, 46.75], [-89.25, 46.85], [-89.5, 46.75], [-89.75, 46.85], [-90.0, 46.75], [-90.53, 46.97], [-90.75, 47.5], [-90.53, 48.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.0, 46.75], [-90.52999999999997, 46.97], [-90.75, 47.5], [-90.52999999999997, 48.03], [-90.0, 48.25], [-89.75, 48.15], [-89.5, 48.25], [-89.25, 48.15], [-89.18, 48.18], [-89.14999999999998, 48.25], [-89.25, 48.5], [-89.02999999999997, 49.03], [-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97000000000003, 49.03], [-85.82, 48.68], [-85.75, 48.65], [-85.5, 48.75], [-84.97000000000003, 48.53], [-84.82, 48.18], [-84.47000000000003, 48.03], [-84.25, 47.5], [-84.35000000000002, 47.25], [-84.25, 47.0], [-84.47000000000003, 46.47], [-85.0, 46.25], [-85.25, 46.35], [-85.5, 46.25], [-85.75, 46.35], [-86.0, 46.25], [-86.25, 46.35], [-86.5, 46.25], [-86.75, 46.35], [-87.0, 46.25], [-87.25, 46.35], [-87.5, 46.25], [-88.02999999999997, 46.47], [-88.25, 47.0], [-88.14999999999998, 47.25], [-88.18, 47.32], [-88.25, 47.35], [-88.32, 47.32], [-88.47000000000003, 46.97], [-89.0, 46.75], [-89.25, 46.85], [-89.5, 46.75], [-89.75, 46.85], [-90.0, 46.75]]]]}, "2023-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.0, 46.75], [-90.52999999999997, 46.97], [-90.75, 47.5], [-90.52999999999997, 48.03], [-90.0, 48.25], [-89.75, 48.15], [-89.5, 48.25], [-89.25, 48.15], [-89.18, 48.18], [-89.14999999999998, 48.25], [-89.25, 48.5], [-89.02999999999997, 49.03], [-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97000000000003, 49.03], [-85.82, 48.68], [-85.75, 48.65], [-85.5, 48.75], [-84.97000000000003, 48.53], [-84.82, 48.18], [-84.47000000000003, 48.03], [-84.25, 47.5], [-84.35000000000002, 47.25], [-84.25, 47.0], [-84.47000000000003, 46.47], [-85.0, 46.25], [-85.25, 46.35], [-85.5, 46.25], [-85.75, 46.35], [-86.0, 46.25], [-86.25, 46.35], [-86.5, 46.25], [-86.75, 46.35], [-87.0, 46.25], [-87.25, 46.35], [-87.5, 46.25], [-88.02999999999997, 46.47], [-88.25, 47.0], [-88.14999999999998, 47.25], [-88.18, 47.32], [-88.25, 47.35], [-88.32, 47.32], [-88.47000000000003, 46.97], [-89.0, 46.75], [-89.25, 46.85], [-89.5, 46.75], [-89.75, 46.85], [-90.0, 46.75]]]]}, "2023-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.0, 46.75], [-90.52999999999997, 46.97], [-90.75, 47.5], [-90.52999999999997, 48.03], [-90.0, 48.25], [-89.75, 48.15], [-89.5, 48.25], [-89.25, 48.15], [-89.18, 48.18], [-89.14999999999998, 48.25], [-89.25, 48.5], [-89.02999999999997, 49.03], [-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97000000000003, 49.03], [-85.82, 48.68], [-85.75, 48.65], [-85.5, 48.75], [-84.97000000000003, 48.53], [-84.82, 48.18], [-84.47000000000003, 48.03], [-84.25, 47.5], 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8.263080675913342, 7.527143723752426]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.376487974611791, 9.188631192662001, 9.219506275231879, 8.219446848939583]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5073596475157387, 1.456513533659709, 1.4660749590076632, 1.3390263803303986]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.669535987752822, 1.6030065575626438, 1.6157200285361721, 1.448210039335031]}}