{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:33.162386", "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-Apr-16_to_2024-Apr-19_266.5_31.5"}, "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": 2024040001574}, "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": "April 16 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 19 2024"}, "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": 71366.86670738755}, "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": 31.5}, "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": 266.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "266.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 265.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 269.0}, "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": [[[[-95.03, 32.03], [-94.5, 32.25], [-94.25, 32.15], [-94.0, 32.25], [-93.75, 32.15], [-93.68, 32.18], [-93.65, 32.25], [-93.75, 32.5], [-93.53, 33.03], [-93.0, 33.25], [-92.75, 33.15], [-92.5, 33.25], [-91.97, 33.03], [-91.82, 32.68], [-91.47, 32.53], [-91.32, 32.18], [-91.25, 32.15], [-91.0, 32.25], [-90.47, 32.03], [-90.25, 31.5], [-90.47, 30.97], [-91.0, 30.75], [-91.25, 30.85], [-91.32, 30.82], [-91.47, 30.47], [-91.82, 30.32], [-91.97, 29.97], [-92.32, 29.82], [-92.47, 29.47], [-93.0, 29.25], [-93.53, 29.47], [-93.68, 29.82], [-93.75, 29.85], [-94.0, 29.75], [-94.25, 29.85], [-94.5, 29.75], [-94.75, 29.85], [-95.0, 29.75], [-95.53, 29.97], [-95.75, 30.5], [-95.65, 30.75], [-95.75, 31.0], [-95.53, 31.53], [-95.18, 31.68], [-95.03, 32.03]]]]}}, "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": {"2024-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.25, 31.0], [-94.14999999999998, 31.25], [-94.25, 31.5], [-94.02999999999997, 32.03], [-93.68, 32.18], [-93.64999999999998, 32.25], [-93.75, 32.5], [-93.52999999999997, 33.03], [-93.0, 33.25], [-92.75, 33.15], [-92.5, 33.25], [-91.97000000000003, 33.03], [-91.82, 32.68], [-91.47000000000003, 32.53], [-91.32, 32.18], [-91.25, 32.15], [-91.0, 32.25], [-90.47000000000003, 32.03], [-90.25, 31.5], [-90.47000000000003, 30.97], [-91.0, 30.75], [-91.25, 30.85], [-91.32, 30.82], [-91.47000000000003, 30.47], [-91.82, 30.32], [-91.97000000000003, 29.97], [-92.32, 29.82], [-92.47000000000003, 29.47], [-93.0, 29.25], [-93.52999999999997, 29.47], [-93.68, 29.82], [-94.02999999999997, 29.97], [-94.25, 30.5], [-94.14999999999998, 30.75], [-94.25, 31.0]]]]}, "2024-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-95.75, 31.0], [-95.52999999999997, 31.53], [-95.18, 31.68], [-95.02999999999997, 32.03], [-94.5, 32.25], [-94.25, 32.15], [-94.0, 32.25], [-93.75, 32.15], [-93.68, 32.18], [-93.64999999999998, 32.25], [-93.75, 32.5], [-93.52999999999997, 33.03], [-93.0, 33.25], [-92.75, 33.15], [-92.5, 33.25], [-91.97000000000003, 33.03], [-91.82, 32.68], [-91.47000000000003, 32.53], [-91.32, 32.18], [-91.25, 32.15], [-91.0, 32.25], [-90.47000000000003, 32.03], [-90.25, 31.5], [-90.47000000000003, 30.97], [-91.0, 30.75], [-91.25, 30.85], [-91.32, 30.82], [-91.47000000000003, 30.47], [-91.82, 30.32], [-91.97000000000003, 29.97], [-92.32, 29.82], [-92.47000000000003, 29.47], [-93.0, 29.25], [-93.52999999999997, 29.47], [-93.68, 29.82], [-93.75, 29.85], [-94.0, 29.75], [-94.25, 29.85], [-94.5, 29.75], [-94.75, 29.85], [-95.0, 29.75], [-95.52999999999997, 29.97], [-95.75, 30.5], [-95.64999999999998, 30.75], [-95.75, 31.0]]]]}, "2024-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-95.75, 31.0], [-95.52999999999997, 31.53], [-95.18, 31.68], [-95.02999999999997, 32.03], [-94.5, 32.25], [-94.25, 32.15], [-94.0, 32.25], [-93.75, 32.15], [-93.68, 32.18], [-93.64999999999998, 32.25], [-93.75, 32.5], [-93.52999999999997, 33.03], [-93.0, 33.25], [-92.75, 33.15], [-92.5, 33.25], [-91.97000000000003, 33.03], [-91.82, 32.68], [-91.47000000000003, 32.53], [-91.32, 32.18], [-91.25, 32.15], [-91.0, 32.25], [-90.47000000000003, 32.03], [-90.25, 31.5], [-90.47000000000003, 30.97], [-91.0, 30.75], [-91.25, 30.85], [-91.32, 30.82], [-91.47000000000003, 30.47], [-91.82, 30.32], [-91.97000000000003, 29.97], [-92.32, 29.82], [-92.47000000000003, 29.47], [-93.0, 29.25], [-93.52999999999997, 29.47], [-93.68, 29.82], [-93.75, 29.85], [-94.0, 29.75], [-94.25, 29.85], [-94.5, 29.75], [-94.75, 29.85], [-95.0, 29.75], [-95.52999999999997, 29.97], [-95.75, 30.5], [-95.64999999999998, 30.75], [-95.75, 31.0]]]]}, "2024-04-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-95.75, 31.0], [-95.52999999999997, 31.53], [-95.18, 31.68], [-95.02999999999997, 32.03], [-94.5, 32.25], [-94.25, 32.15], [-94.0, 32.25], [-93.75, 32.15], [-93.68, 32.18], [-93.52999999999997, 32.53], [-93.0, 32.75], [-92.47000000000003, 32.53], [-92.32, 32.18], [-92.25, 32.15], [-92.0, 32.25], [-91.75, 32.15], [-91.5, 32.25], [-91.25, 32.15], [-91.0, 32.25], [-90.47000000000003, 32.03], [-90.25, 31.5], [-90.47000000000003, 30.97], [-91.0, 30.75], [-91.25, 30.85], [-91.32, 30.82], [-91.47000000000003, 30.47], [-91.82, 30.32], [-91.97000000000003, 29.97], [-92.32, 29.82], [-92.47000000000003, 29.47], [-93.0, 29.25], [-93.52999999999997, 29.47], [-93.68, 29.82], [-93.75, 29.85], [-94.0, 29.75], [-94.25, 29.85], [-94.5, 29.75], [-94.75, 29.85], [-95.0, 29.75], [-95.52999999999997, 29.97], [-95.75, 30.5], [-95.64999999999998, 30.75], [-95.75, 31.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.299819477230869}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.6541572157994695}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.94181197566536, 24.25959879770471, 24.52894746700855, 24.5508835576984]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.506988453396104, 24.681289771529748, 24.927241268533123, 25.20427281001315]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.7473119141956115, 4.783713336317537, 4.726345181983582, 4.340373319691401]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.074074491377246, 5.299819477230869, 5.168193589661314, 4.692909986979146]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2839593245189747, 1.3485483989274674, 1.44152130610015, 1.4293196755395001]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3782869159088398, 1.4340170027450343, 1.6209129396142563, 1.5998811785622058]}}