{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:12.601340", "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": "2021-Aug-22_to_2021-Aug-26_265.0_32.0"}, "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": 2021080002787}, "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 22 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 26 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 63250.0354249735}, "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": 32.0}, "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": 265.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "265.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 263.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 266.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-97.03, 32.53], [-96.5, 32.75], [-96.25, 32.65], [-96.18, 32.68], [-96.03, 33.03], [-95.5, 33.25], [-95.25, 33.15], [-95.0, 33.25], [-94.75, 33.15], [-94.5, 33.25], [-93.97, 33.03], [-93.82, 32.68], [-93.47, 32.53], [-93.25, 32.0], [-93.35, 31.75], [-93.32, 31.68], [-92.97, 31.53], [-92.75, 31.0], [-92.96, 30.5], [-92.75, 30.0], [-92.97, 29.47], [-93.5, 29.25], [-94.03, 29.47], [-94.18, 29.82], [-94.53, 29.97], [-94.68, 30.32], [-94.75, 30.35], [-95.0, 30.25], [-95.25, 30.35], [-95.5, 30.25], [-95.75, 30.35], [-96.0, 30.25], [-96.25, 30.35], [-96.5, 30.25], [-97.03, 30.47], [-97.25, 31.0], [-97.15, 31.25], [-97.25, 31.5], [-97.15, 31.75], [-97.25, 32.0], [-97.03, 32.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.75, 32.0], [-96.52999999999997, 32.53], [-96.18, 32.68], [-96.02999999999997, 33.03], [-95.5, 33.25], [-95.25, 33.15], [-95.0, 33.25], [-94.75, 33.15], [-94.5, 33.25], [-93.97000000000003, 33.03], [-93.75, 32.5], [-93.85000000000002, 32.25], [-93.82, 32.18], [-93.47000000000003, 32.03], [-93.32, 31.68], [-92.97000000000003, 31.53], [-92.75, 31.0], [-92.97000000000003, 30.47], [-93.5, 30.25], [-93.75, 30.35], [-94.0, 30.25], [-94.25, 30.35], [-94.5, 30.25], [-95.02999999999997, 30.47], [-95.18, 30.82], [-95.25, 30.85], [-95.5, 30.75], [-95.75, 30.85], [-96.0, 30.75], [-96.52999999999997, 30.97], [-96.75, 31.5], [-96.64999999999998, 31.75], [-96.75, 32.0]]]]}, "2021-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.75, 31.5], [-96.64999999999998, 31.75], [-96.75, 32.0], [-96.52999999999997, 32.53], [-96.18, 32.68], [-96.02999999999997, 33.03], [-95.5, 33.25], [-95.25, 33.15], [-95.0, 33.25], [-94.75, 33.15], [-94.5, 33.25], [-93.97000000000003, 33.03], [-93.82, 32.68], [-93.47000000000003, 32.53], [-93.25, 32.0], [-93.35000000000002, 31.75], [-93.32, 31.68], [-92.97000000000003, 31.53], [-92.75, 31.0], [-92.95999999999998, 30.5], [-92.75, 30.0], [-92.97000000000003, 29.47], [-93.5, 29.25], [-94.02999999999997, 29.47], [-94.18, 29.82], [-94.52999999999997, 29.97], [-94.68, 30.32], [-94.75, 30.35], [-95.0, 30.25], [-95.25, 30.35], [-95.5, 30.25], [-95.75, 30.35], [-96.0, 30.25], [-96.52999999999997, 30.47], [-96.75, 31.0], [-96.64999999999998, 31.25], [-96.75, 31.5]]]]}, "2021-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-97.25, 31.5], [-97.14999999999998, 31.75], [-97.25, 32.0], [-97.02999999999997, 32.53], [-96.5, 32.75], [-96.25, 32.65], [-96.18, 32.68], [-96.02999999999997, 33.03], [-95.5, 33.25], [-95.25, 33.15], [-95.0, 33.25], [-94.75, 33.15], [-94.5, 33.25], [-93.97000000000003, 33.03], [-93.82, 32.68], [-93.47000000000003, 32.53], [-93.25, 32.0], [-93.35000000000002, 31.75], [-93.32, 31.68], [-92.97000000000003, 31.53], [-92.75, 31.0], [-92.95999999999998, 30.5], [-92.75, 30.0], [-92.97000000000003, 29.47], [-93.5, 29.25], [-94.02999999999997, 29.47], [-94.18, 29.82], [-94.52999999999997, 29.97], [-94.68, 30.32], [-94.75, 30.35], [-95.0, 30.25], [-95.25, 30.35], [-95.5, 30.25], [-95.75, 30.35], [-96.0, 30.25], [-96.25, 30.35], [-96.5, 30.25], [-97.02999999999997, 30.47], [-97.25, 31.0], [-97.14999999999998, 31.25], [-97.25, 31.5]]]]}, "2021-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-97.25, 31.5], [-97.14999999999998, 31.75], [-97.25, 32.0], [-97.02999999999997, 32.53], [-96.5, 32.75], [-96.25, 32.65], [-96.18, 32.68], [-96.02999999999997, 33.03], [-95.5, 33.25], [-95.25, 33.15], [-95.0, 33.25], [-94.75, 33.15], [-94.5, 33.25], [-93.97000000000003, 33.03], [-93.82, 32.68], [-93.47000000000003, 32.53], [-93.25, 32.0], [-93.35000000000002, 31.75], [-93.25, 31.5], [-93.35000000000002, 31.25], [-93.25, 31.0], [-93.35000000000002, 30.75], [-93.32, 30.68], [-92.97000000000003, 30.53], [-92.75, 30.0], [-92.97000000000003, 29.47], [-93.5, 29.25], 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30.25], [-96.25, 30.35], [-96.5, 30.25], [-97.02999999999997, 30.47], [-97.25, 31.0], [-97.14999999999998, 31.25], [-97.25, 31.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.494050182713579}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.2095570830151345}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.435449491581835, 31.313700000626, 31.802488930356503, 31.856784847679137, 31.888123386644565]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.37225656692618, 32.56481802126888, 33.21722294863304, 33.38922424769282, 33.64330616667604]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.9096016176444435, 2.8785737593829244, 3.2845309460487258, 3.4128862260572435, 3.4464160722561865]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.7287147242856804, 3.8369448021994117, 4.164121354302324, 4.404313253282794, 4.494050182713579]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3542572078906436, 1.4292342692332392, 1.663752232348364, 1.7120795172843712, 1.6927717976153864]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6179192200306616, 1.719781212512603, 1.9682622265466037, 2.0983635610100695, 2.010605495424613]}}