{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:05.185947", "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": "2017-May-12_to_2017-May-15_258.0_47.0"}, "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": 2017050001806}, "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 12 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 15 2017"}, "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": 64638.98823825023}, "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": ["C.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": 47.0}, "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": 258.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "258.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 257.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 262.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.03, 48.53], [-102.5, 48.75], [-101.97, 48.53], [-101.82, 48.18], [-101.47, 48.03], [-101.32, 47.68], [-101.25, 47.65], [-101.0, 47.75], [-100.47, 47.53], [-100.25, 47.0], [-100.35, 46.75], [-100.32, 46.68], [-100.25, 46.65], [-100.0, 46.75], [-99.75, 46.65], [-99.5, 46.75], [-99.25, 46.65], [-99.0, 46.75], [-98.75, 46.65], [-98.5, 46.75], [-97.97, 46.53], [-97.75, 46.0], [-97.97, 45.47], [-98.32, 45.32], [-98.47, 44.97], [-99.0, 44.75], [-99.25, 44.85], [-99.5, 44.75], [-99.75, 44.85], [-100.0, 44.75], [-100.25, 44.85], [-100.5, 44.75], [-100.75, 44.85], [-101.0, 44.75], [-101.53, 44.97], [-101.68, 45.32], [-101.75, 45.35], [-102.0, 45.25], [-102.53, 45.47], [-102.75, 46.0], [-102.65, 46.25], [-102.75, 46.5], [-102.65, 46.75], [-102.68, 46.82], [-103.03, 46.97], [-103.25, 47.5], [-103.15, 47.75], [-103.25, 48.0], [-103.03, 48.53]]]]}, "2017-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.03, 48.53], [-102.5, 48.75], [-101.97, 48.53], [-101.82, 48.18], [-101.47, 48.03], [-101.32, 47.68], [-101.25, 47.65], [-101.0, 47.75], [-100.47, 47.53], [-100.25, 47.0], [-100.35, 46.75], [-100.32, 46.68], [-100.25, 46.65], [-100.0, 46.75], [-99.75, 46.65], [-99.5, 46.75], [-99.25, 46.65], [-99.0, 46.75], [-98.75, 46.65], [-98.5, 46.75], [-97.97, 46.53], [-97.75, 46.0], [-97.87, 45.7], [-97.75, 45.65], [-97.5, 45.75], [-96.97, 45.53], [-96.75, 45.0], [-96.97, 44.47], [-97.32, 44.32], [-97.47, 43.97], [-97.82, 43.82], [-97.97, 43.47], [-98.5, 43.25], [-98.75, 43.35], [-99.0, 43.25], [-99.25, 43.35], [-99.5, 43.25], [-100.03, 43.47], [-100.25, 44.0], [-100.03, 44.53], [-99.62, 44.7], [-99.68, 44.82], [-99.75, 44.85], [-100.0, 44.75], [-100.25, 44.85], [-100.5, 44.75], [-100.75, 44.85], [-101.0, 44.75], [-101.53, 44.97], [-101.68, 45.32], [-101.75, 45.35], [-102.0, 45.25], [-102.53, 45.47], [-102.75, 46.0], [-102.65, 46.25], [-102.75, 46.5], [-102.65, 46.75], [-102.68, 46.82], [-103.03, 46.97], [-103.25, 47.5], [-103.15, 47.75], [-103.25, 48.0], [-103.03, 48.53]]]]}, "2017-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.03, 48.53], [-102.5, 48.75], [-101.97, 48.53], [-101.82, 48.18], [-101.47, 48.03], [-101.32, 47.68], [-101.25, 47.65], [-101.0, 47.75], [-100.47, 47.53], [-100.25, 47.0], [-100.35, 46.75], [-100.32, 46.68], [-100.25, 46.65], [-100.0, 46.75], [-99.75, 46.65], [-99.5, 46.75], [-99.25, 46.65], [-99.0, 46.75], [-98.75, 46.65], [-98.5, 46.75], [-97.97, 46.53], [-97.75, 46.0], [-97.87, 45.7], [-97.75, 45.65], [-97.5, 45.75], [-96.97, 45.53], [-96.75, 45.0], [-96.97, 44.47], [-97.32, 44.32], [-97.47, 43.97], [-97.82, 43.82], [-97.97, 43.47], [-98.5, 43.25], [-98.75, 43.35], [-99.0, 43.25], [-99.25, 43.35], [-99.5, 43.25], [-100.03, 43.47], [-100.25, 44.0], [-100.03, 44.53], [-99.62, 44.7], [-99.68, 44.82], [-99.75, 44.85], [-100.0, 44.75], [-100.25, 44.85], [-100.5, 44.75], [-100.75, 44.85], [-101.0, 44.75], [-101.53, 44.97], [-101.68, 45.32], [-101.75, 45.35], [-102.0, 45.25], [-102.53, 45.47], [-102.75, 46.0], [-102.65, 46.25], [-102.75, 46.5], [-102.65, 46.75], [-102.68, 46.82], [-103.03, 46.97], [-103.25, 47.5], [-103.15, 47.75], [-103.25, 48.0], [-103.03, 48.53]]]]}, "2017-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-99.53, 45.53], [-99.0, 45.75], [-98.75, 45.65], [-98.5, 45.75], [-98.25, 45.65], [-98.0, 45.75], [-97.75, 45.65], [-97.5, 45.75], [-96.97, 45.53], [-96.75, 45.0], [-96.97, 44.47], [-97.32, 44.32], [-97.47, 43.97], [-97.82, 43.82], [-97.97, 43.47], [-98.5, 43.25], [-98.75, 43.35], [-99.0, 43.25], [-99.25, 43.35], [-99.5, 43.25], [-100.03, 43.47], [-100.25, 44.0], [-100.03, 44.53], [-99.62, 44.7], [-99.75, 45.0], [-99.53, 45.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.807258312273973}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.9243841978492835}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.613284877798264, 20.75825634502513, 20.70332212432845, 20.987734816840373]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.635557844374887, 22.721017268326364, 23.058113622602093, 21.55308280394621]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.243474110738416, 8.553459056897454, 8.09719287340823, 6.84022928575091]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.029353024349632, 9.807258312273973, 9.261636121324102, 7.070881610291224]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5198393881930825, 1.8352359457282854, 1.7798976018579802, 1.4660264772744966]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6816994221200596, 2.142159760133078, 1.975851189899902, 1.5210501455138656]}}