{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:09.849191", "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": "2024-Sep-18_to_2024-Sep-23_278.0_39.0"}, "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": 2024090001840}, "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": "September 18 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 23 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 57851.451647068454}, "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": ["United States"]}, "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": 39.0}, "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": 278.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "278.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 276.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 279.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-83.75, 40.0], [-83.53, 40.53], [-83.0, 40.75], [-82.75, 40.65], [-82.5, 40.75], [-82.25, 40.65], [-82.0, 40.75], [-81.47, 40.53], [-81.25, 40.0], [-81.35, 39.75], [-81.32, 39.68], [-81.25, 39.65], [-81.0, 39.75], [-80.75, 39.65], [-80.5, 39.75], [-79.97, 39.53], [-79.75, 39.0], [-79.97, 38.47], [-80.32, 38.32], [-80.35, 38.25], [-80.25, 38.0], [-80.35, 37.75], [-80.25, 37.5], [-80.47, 36.97], [-81.0, 36.75], [-81.25, 36.85], [-81.5, 36.75], [-81.75, 36.85], [-82.0, 36.75], [-82.53, 36.97], [-82.75, 37.5], [-82.65, 37.75], [-82.68, 37.82], [-82.75, 37.85], [-83.0, 37.75], [-83.25, 37.85], [-83.5, 37.75], [-84.03, 37.97], [-84.25, 38.5], [-84.03, 39.03], [-83.68, 39.18], [-83.65, 39.25], [-83.75, 39.5], [-83.65, 39.75], [-83.75, 40.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-83.52999999999997, 39.47], [-83.75, 40.0], [-83.52999999999997, 40.53], [-83.0, 40.75], [-82.75, 40.65], [-82.5, 40.75], [-82.25, 40.65], [-82.0, 40.75], [-81.47000000000003, 40.53], [-81.25, 40.0], [-81.35000000000002, 39.75], [-81.32, 39.68], [-80.97000000000003, 39.53], [-80.75, 39.0], [-80.97000000000003, 38.47], [-81.5, 38.25], [-81.75, 38.35], [-82.0, 38.25], [-82.25, 38.35], [-82.5, 38.25], [-83.02999999999997, 38.47], [-83.25, 39.0], [-83.14999999999998, 39.25], [-83.18, 39.32], [-83.52999999999997, 39.47]]]]}, "2024-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-83.64999999999998, 39.25], [-83.75, 39.5], [-83.64999999999998, 39.75], [-83.75, 40.0], [-83.52999999999997, 40.53], [-83.0, 40.75], [-82.75, 40.65], [-82.5, 40.75], [-82.25, 40.65], [-82.0, 40.75], [-81.47000000000003, 40.53], [-81.25, 40.0], [-81.35000000000002, 39.75], [-81.32, 39.68], [-80.97000000000003, 39.53], [-80.75, 39.0], [-80.97000000000003, 38.47], [-81.32, 38.32], [-81.47000000000003, 37.97], [-82.0, 37.75], [-82.25, 37.85], [-82.5, 37.75], [-82.75, 37.85], [-83.0, 37.75], [-83.25, 37.85], [-83.5, 37.75], [-84.02999999999997, 37.97], [-84.25, 38.5], [-84.02999999999997, 39.03], [-83.68, 39.18], [-83.64999999999998, 39.25]]]]}, "2024-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-83.64999999999998, 39.25], [-83.75, 39.5], [-83.64999999999998, 39.75], [-83.75, 40.0], [-83.52999999999997, 40.53], [-83.0, 40.75], [-82.75, 40.65], [-82.5, 40.75], [-82.25, 40.65], [-82.0, 40.75], [-81.47000000000003, 40.53], [-81.25, 40.0], [-81.35000000000002, 39.75], [-81.32, 39.68], [-81.25, 39.65], [-81.0, 39.75], [-80.47000000000003, 39.53], [-80.25, 39.0], [-80.47000000000003, 38.47], [-80.82, 38.32], [-80.97000000000003, 37.97], [-81.37, 37.8], [-81.25, 37.5], [-81.47000000000003, 36.97], [-82.0, 36.75], [-82.52999999999997, 36.97], [-82.75, 37.5], [-82.62, 37.8], [-82.75, 37.85], [-83.0, 37.75], [-83.25, 37.85], [-83.5, 37.75], [-84.02999999999997, 37.97], [-84.25, 38.5], [-84.02999999999997, 39.03], [-83.68, 39.18], [-83.64999999999998, 39.25]]]]}, "2024-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-83.64999999999998, 39.25], [-83.75, 39.5], [-83.64999999999998, 39.75], [-83.75, 40.0], [-83.52999999999997, 40.53], [-83.0, 40.75], [-82.75, 40.65], [-82.5, 40.75], [-82.25, 40.65], [-82.0, 40.75], [-81.47000000000003, 40.53], [-81.25, 40.0], [-81.35000000000002, 39.75], [-81.32, 39.68], [-81.25, 39.65], [-81.0, 39.75], [-80.75, 39.65], [-80.5, 39.75], [-79.97000000000003, 39.53], [-79.75, 39.0], [-79.97000000000003, 38.47], [-80.32, 38.32], [-80.35000000000002, 38.25], [-80.25, 38.0], [-80.35000000000002, 37.75], [-80.25, 37.5], [-80.47000000000003, 36.97], [-81.0, 36.75], [-81.25, 36.85], [-81.5, 36.75], [-81.75, 36.85], [-82.0, 36.75], [-82.52999999999997, 36.97], [-82.75, 37.5], [-82.64999999999998, 37.75], [-82.68, 37.82], [-82.75, 37.85], [-83.0, 37.75], [-83.25, 37.85], [-83.5, 37.75], [-84.02999999999997, 37.97], [-84.25, 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"coordinates": [[[[-83.0, 37.75], [-83.52999999999997, 37.97], [-83.75, 38.5], [-83.52999999999997, 39.03], [-83.0, 39.25], [-82.75, 39.15], [-82.68, 39.18], [-82.54000000000002, 39.5], [-82.75, 40.0], [-82.52999999999997, 40.53], [-82.0, 40.75], [-81.47000000000003, 40.53], [-81.25, 40.0], [-81.37, 39.7], [-81.25, 39.65], [-81.0, 39.75], [-80.75, 39.65], [-80.5, 39.75], [-79.97000000000003, 39.53], [-79.75, 39.0], [-79.97000000000003, 38.47], [-80.32, 38.32], [-80.35000000000002, 38.25], [-80.25, 38.0], [-80.35000000000002, 37.75], [-80.25, 37.5], [-80.47000000000003, 36.97], [-81.0, 36.75], [-81.25, 36.85], [-81.5, 36.75], [-81.75, 36.85], [-82.0, 36.75], [-82.52999999999997, 36.97], [-82.75, 37.5], [-82.64999999999998, 37.75], [-82.68, 37.82], [-82.75, 37.85], [-83.0, 37.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.500165552610099}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.264205190196739}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.624990081787075, 23.723561495826402, 23.88140610339599, 24.07933154635964, 23.19810892740884, 23.403562164306663]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.99100774129232, 24.29397862752279, 24.81125157674154, 25.50297317504885, 24.338174438476585, 24.94693272908529]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.800880413417353, 4.761501717870154, 5.10923842245136, 5.771519295170495, 5.1139344763993755, 5.48968486393839]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.410306711220926, 5.053463898339032, 5.704885067108933, 7.500165552610099, 5.41934387342701, 6.119235246054245]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4175647637857036, 1.3993400958904554, 1.458653418105938, 1.6132873236909606, 1.4216929956176452, 1.5346077510906213]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6064981879156754, 1.4877426118784374, 1.6468987350355146, 1.891004681923017, 1.572386635703827, 1.6867377263568326]}}