{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:27.627000", "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": "2013-May-19_to_2013-May-21_274.0_43.5"}, "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": 2013050002374}, "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": "May 19 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 21 2013"}, "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": 59257.27960847366}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": 43.5}, "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": 274.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "274.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 271.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 275.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 45.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.53, 40.97], [-88.75, 41.5], [-88.53, 42.03], [-88.0, 42.25], [-87.75, 42.15], [-87.5, 42.25], [-87.25, 42.15], [-87.18, 42.18], [-87.03, 42.53], [-86.68, 42.68], [-86.65, 42.75], [-86.75, 43.0], [-86.65, 43.25], [-86.75, 43.5], [-86.65, 43.75], [-86.75, 44.0], [-86.65, 44.25], [-86.75, 44.5], [-86.53, 45.03], [-86.0, 45.25], [-85.75, 45.15], [-85.68, 45.18], [-85.53, 45.53], [-85.0, 45.75], [-84.47, 45.53], [-84.25, 45.0], [-84.47, 44.47], [-84.82, 44.32], [-84.85, 44.25], [-84.82, 44.18], [-84.47, 44.03], [-84.25, 43.5], [-84.35, 43.25], [-84.25, 43.0], [-84.47, 42.47], [-84.82, 42.32], [-84.85, 42.25], [-84.75, 42.0], [-84.85, 41.75], [-84.75, 41.5], [-84.97, 40.97], [-85.32, 40.82], [-85.47, 40.47], [-85.82, 40.32], [-85.97, 39.97], [-86.5, 39.75], [-86.75, 39.85], [-87.0, 39.75], [-87.53, 39.97], [-87.75, 40.5], [-87.62, 40.8], [-87.75, 40.85], [-88.0, 40.75], [-88.53, 40.97]]]]}, "2013-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.53, 40.97], [-88.75, 41.5], [-88.53, 42.03], [-88.0, 42.25], [-87.75, 42.15], [-87.5, 42.25], [-87.25, 42.15], [-87.18, 42.18], [-87.03, 42.53], [-86.68, 42.68], [-86.65, 42.75], [-86.75, 43.0], [-86.65, 43.25], [-86.75, 43.5], [-86.65, 43.75], [-86.75, 44.0], [-86.65, 44.25], [-86.75, 44.5], [-86.53, 45.03], [-86.0, 45.25], [-85.75, 45.15], [-85.68, 45.18], [-85.53, 45.53], [-85.0, 45.75], [-84.47, 45.53], [-84.25, 45.0], [-84.47, 44.47], [-84.82, 44.32], [-84.85, 44.25], [-84.82, 44.18], [-84.47, 44.03], [-84.25, 43.5], [-84.35, 43.25], [-84.25, 43.0], [-84.47, 42.47], [-84.82, 42.32], [-84.85, 42.25], [-84.75, 42.0], [-84.85, 41.75], [-84.75, 41.5], [-84.97, 40.97], [-85.32, 40.82], [-85.47, 40.47], [-85.82, 40.32], [-85.97, 39.97], [-86.5, 39.75], [-86.75, 39.85], [-87.0, 39.75], [-87.53, 39.97], [-87.75, 40.5], [-87.62, 40.8], [-87.75, 40.85], [-88.0, 40.75], [-88.53, 40.97]]]]}, "2013-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.53, 40.97], [-88.75, 41.5], [-88.53, 42.03], [-88.0, 42.25], [-87.75, 42.15], [-87.5, 42.25], [-87.25, 42.15], [-87.18, 42.18], [-87.03, 42.53], [-86.68, 42.68], [-86.65, 42.75], [-86.75, 43.0], [-86.65, 43.25], [-86.75, 43.5], [-86.65, 43.75], [-86.75, 44.0], [-86.65, 44.25], [-86.75, 44.5], [-86.53, 45.03], [-86.0, 45.25], [-85.75, 45.15], [-85.68, 45.18], [-85.53, 45.53], [-85.0, 45.75], [-84.47, 45.53], [-84.25, 45.0], [-84.47, 44.47], [-84.82, 44.32], [-84.85, 44.25], [-84.82, 44.18], [-84.47, 44.03], [-84.25, 43.5], [-84.35, 43.25], [-84.25, 43.0], [-84.47, 42.47], [-84.82, 42.32], [-84.85, 42.25], [-84.75, 42.0], [-84.85, 41.75], [-84.75, 41.5], [-84.97, 40.97], [-85.32, 40.82], [-85.47, 40.47], [-85.82, 40.32], [-85.97, 39.97], [-86.5, 39.75], [-86.75, 39.85], [-87.0, 39.75], [-87.53, 39.97], [-87.75, 40.5], [-87.62, 40.8], [-87.75, 40.85], [-88.0, 40.75], [-88.53, 40.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.474726230584963}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.654132718133039}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.998408605638076, 24.642825668127614, 22.586239894526216]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.342433977313647, 25.971828508369583, 24.052849610840042]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.916983555611628, 9.206356991675197, 6.839057607112286]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.373481724758108, 10.474726230584963, 7.663545139063785]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5060424200716942, 2.10685477153442, 1.595723898924596]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7775475006774089, 2.3447702230184917, 1.7840490610811577]}}