{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:44.668674", "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": "2022-Aug-28_to_2022-Aug-30_281.5_52.5"}, "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": 2022080002950}, "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": "August 28 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 30 2022"}, "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": "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": 190482.42399260553}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 52.5}, "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": 281.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "281.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 279.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 286.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-81.53, 53.03], [-81.18, 53.18], [-81.03, 53.53], [-80.5, 53.75], [-80.25, 53.65], [-80.18, 53.68], [-80.15, 53.75], 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[-78.25, 50.35], [-78.5, 50.25], [-78.75, 50.35], [-79.0, 50.25], [-79.25, 50.35], [-79.5, 50.25], [-79.75, 50.35], [-80.0, 50.25], [-80.25, 50.35], [-80.5, 50.25], [-81.03, 50.47], [-81.25, 51.0], [-81.15, 51.25], [-81.25, 51.5], [-81.15, 51.75], [-81.18, 51.82], [-81.53, 51.97], [-81.75, 52.5], [-81.53, 53.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.52999999999997, 51.97], [-81.75, 52.5], [-81.52999999999997, 53.03], [-81.18, 53.18], [-81.02999999999997, 53.53], [-80.5, 53.75], [-80.25, 53.65], [-80.18, 53.68], [-80.14999999999998, 53.75], [-80.18, 53.82], [-80.52999999999997, 53.97], [-80.75, 54.5], [-80.52999999999997, 55.03], [-80.0, 55.25], [-79.75, 55.15], [-79.5, 55.25], 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amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.473856820138508}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.225950981209825}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.616785277090685, 18.836325464708978, 18.535907859236886]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.78172532472007, 22.438803126978485, 21.022717399661815]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.398853715459786, 6.713304641358872, 6.565694586810809]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.066184225466202, 8.473856820138508, 8.087190522904848]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.733499337146483, 2.0528645133847165, 1.9336074273911388]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.452667275862933, 2.3654908600101563, 2.23629170983771]}}