{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:29.759081", "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": "2012-Sep-13_to_2012-Sep-17_240.5_36.0"}, "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": 2012090002062}, "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 13 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 17 2012"}, "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": 52366.9352785594}, "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": ["W.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": 36.0}, "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": 240.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "240.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 238.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 241.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.0, 38.75], [-119.47, 38.53], [-119.25, 38.0], [-119.47, 37.47], [-120.0, 37.25], [-120.53, 37.47], [-120.75, 38.0], [-120.53, 38.53], [-120.0, 38.75]]]]}, "2012-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.53, 37.03], [-121.18, 37.18], [-121.03, 37.53], [-120.68, 37.68], [-120.65, 37.75], [-120.75, 38.0], [-120.53, 38.53], [-120.0, 38.75], [-119.47, 38.53], [-119.25, 38.0], [-119.35, 37.75], [-119.32, 37.68], [-118.97, 37.53], [-118.82, 37.18], [-118.47, 37.03], [-118.32, 36.68], [-117.97, 36.53], [-117.75, 36.0], [-117.97, 35.47], [-118.5, 35.25], [-118.93, 35.43], [-118.75, 35.0], [-118.97, 34.47], [-119.32, 34.32], [-119.47, 33.97], [-120.0, 33.75], [-120.53, 33.97], [-120.75, 34.5], [-120.65, 34.75], [-120.68, 34.82], [-121.03, 34.97], [-121.18, 35.32], [-121.53, 35.47], [-121.75, 36.0], [-121.65, 36.25], [-121.75, 36.5], [-121.53, 37.03]]]]}, "2012-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.53, 37.03], [-121.18, 37.18], [-121.03, 37.53], [-120.68, 37.68], [-120.65, 37.75], [-120.75, 38.0], [-120.53, 38.53], [-120.0, 38.75], [-119.47, 38.53], [-119.25, 38.0], [-119.35, 37.75], [-119.32, 37.68], [-118.97, 37.53], [-118.82, 37.18], [-118.47, 37.03], [-118.32, 36.68], [-117.97, 36.53], [-117.75, 36.0], [-117.97, 35.47], [-118.5, 35.25], [-118.75, 35.35], [-118.87, 35.3], [-118.75, 35.0], [-118.97, 34.47], [-119.32, 34.32], [-119.47, 33.97], [-120.0, 33.75], [-120.53, 33.97], [-120.75, 34.5], [-120.65, 34.75], [-120.68, 34.82], [-121.03, 34.97], [-121.18, 35.32], [-121.53, 35.47], [-121.75, 36.0], [-121.65, 36.25], [-121.75, 36.5], [-121.53, 37.03]]]]}, "2012-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.53, 37.03], [-121.18, 37.18], [-121.03, 37.53], [-120.68, 37.68], [-120.53, 38.03], [-120.0, 38.25], [-119.47, 38.03], [-119.32, 37.68], [-118.97, 37.53], [-118.82, 37.18], [-118.47, 37.03], [-118.32, 36.68], [-117.97, 36.53], [-117.75, 36.0], [-117.97, 35.47], [-118.5, 35.25], [-118.75, 35.35], [-118.87, 35.3], [-118.75, 35.0], [-118.97, 34.47], [-119.32, 34.32], [-119.47, 33.97], [-120.0, 33.75], [-120.53, 33.97], [-120.75, 34.5], [-120.65, 34.75], [-120.68, 34.82], [-121.03, 34.97], [-121.18, 35.32], [-121.53, 35.47], [-121.75, 36.0], [-121.65, 36.25], [-121.75, 36.5], [-121.53, 37.03]]]]}, "2012-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.65, 36.75], [-120.75, 37.0], [-120.53, 37.53], [-120.0, 37.75], [-119.47, 37.53], [-119.32, 37.18], [-118.97, 37.03], [-118.82, 36.68], [-118.47, 36.53], [-118.25, 36.0], [-118.47, 35.47], [-119.0, 35.25], [-119.25, 35.35], [-119.5, 35.25], [-119.75, 35.35], [-120.0, 35.25], [-120.53, 35.47], [-120.75, 36.0], [-120.65, 36.25], [-120.75, 36.5], [-120.65, 36.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.258593660611325}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.8768380109503124}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.65293967734658, 25.823223680539968, 25.833844566258392, 25.549288461673086, 27.483819453005026]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.65293967734658, 29.995797734032692, 29.979499788557746, 29.504670093529455, 28.965054038130802]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.5471657561939196, 4.026523260305728, 4.0829880606092415, 3.682346960464244, 3.359610883372303]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.5471657561939196, 5.125630754417557, 5.258593660611325, 4.739827637345229, 3.613563381725953]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2922509859537028, 1.630050002016341, 1.671731002903271, 1.4671632509518955, 1.4098618177210556]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2922509859537028, 1.9779613237051015, 2.1105693287244067, 1.7393473562056123, 1.5052261498564958]}}