{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:55.387071", "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": "2023-Aug-01_to_2023-Aug-04_263.5_46.5"}, "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": 2023080001045}, "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 01 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 04 2023"}, "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": 75029.07637761392}, "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": 46.5}, "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": 263.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "263.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 260.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 264.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-99.75, 45.35], [-100.0, 45.25], [-100.53, 45.47], [-100.75, 46.0], [-100.53, 46.53], [-100.18, 46.68], [-100.03, 47.03], [-99.5, 47.25], [-99.25, 47.15], [-99.18, 47.18], [-99.15, 47.25], [-99.25, 47.5], [-99.03, 48.03], [-98.5, 48.25], [-98.25, 48.15], [-98.0, 48.25], [-97.75, 48.15], [-97.5, 48.25], [-96.97, 48.03], [-96.82, 47.68], [-96.75, 47.65], [-96.5, 47.75], [-95.97, 47.53], [-95.75, 47.0], [-95.85, 46.75], [-95.82, 46.68], [-95.47, 46.53], [-95.25, 46.0], [-95.35, 45.75], [-95.25, 45.5], [-95.47, 44.97], [-96.0, 44.75], [-96.25, 44.85], [-96.5, 44.75], [-96.75, 44.85], [-97.0, 44.75], [-97.3, 44.88], [-97.35, 44.75], [-97.25, 44.5], [-97.47, 43.97], [-98.0, 43.75], [-98.25, 43.85], [-98.5, 43.75], [-98.75, 43.85], [-99.0, 43.75], [-99.53, 43.97], [-99.75, 44.5], [-99.65, 44.75], [-99.75, 45.0], [-99.65, 45.25], [-99.68, 45.32], [-99.75, 45.35]]]]}}, "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": {"2023-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.02999999999997, 47.03], [-99.5, 47.25], [-99.25, 47.15], [-99.18, 47.18], [-99.14999999999998, 47.25], [-99.25, 47.5], [-99.02999999999997, 48.03], [-98.5, 48.25], [-98.25, 48.15], [-98.0, 48.25], [-97.75, 48.15], [-97.5, 48.25], [-96.97000000000003, 48.03], [-96.82, 47.68], [-96.75, 47.65], [-96.5, 47.75], [-95.97000000000003, 47.53], [-95.75, 47.0], [-95.85000000000002, 46.75], [-95.75, 46.5], [-95.85000000000002, 46.25], [-95.75, 46.0], [-95.97000000000003, 45.47], [-96.32, 45.32], [-96.47000000000003, 44.97], [-97.0, 44.75], [-97.30000000000001, 44.88], [-97.47000000000003, 44.47], [-97.82, 44.32], [-97.97000000000003, 43.97], [-98.5, 43.75], [-98.75, 43.85], [-99.0, 43.75], [-99.52999999999997, 43.97], [-99.75, 44.5], [-99.64999999999998, 44.75], [-99.75, 45.0], [-99.64999999999998, 45.25], [-99.68, 45.32], [-99.75, 45.35], [-100.0, 45.25], [-100.52999999999997, 45.47], [-100.75, 46.0], [-100.52999999999997, 46.53], [-100.18, 46.68], [-100.02999999999997, 47.03]]]]}, "2023-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.02999999999997, 47.03], [-99.5, 47.25], [-99.25, 47.15], [-99.18, 47.18], [-99.14999999999998, 47.25], [-99.25, 47.5], [-99.02999999999997, 48.03], [-98.5, 48.25], [-98.25, 48.15], [-98.0, 48.25], [-97.75, 48.15], [-97.5, 48.25], [-96.97000000000003, 48.03], [-96.82, 47.68], [-96.75, 47.65], [-96.5, 47.75], [-95.97000000000003, 47.53], [-95.75, 47.0], [-95.85000000000002, 46.75], [-95.82, 46.68], [-95.47000000000003, 46.53], [-95.25, 46.0], [-95.35000000000002, 45.75], [-95.25, 45.5], [-95.47000000000003, 44.97], [-96.0, 44.75], [-96.25, 44.85], [-96.5, 44.75], [-96.75, 44.85], [-97.0, 44.75], [-97.30000000000001, 44.88], [-97.35000000000002, 44.75], [-97.25, 44.5], [-97.47000000000003, 43.97], [-98.0, 43.75], [-98.25, 43.85], [-98.5, 43.75], [-98.75, 43.85], [-99.0, 43.75], [-99.52999999999997, 43.97], [-99.75, 44.5], 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27.23698447225854]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.140253358671766, 4.229941477699981, 5.366031331075954, 3.906482750094055]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.961458793562713, 5.096852466375253, 6.376061838337989, 4.7152433522495585]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4095813975610965, 1.4194143541429163, 1.8888101354505682, 1.404474451572908]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6579470942454282, 1.7402295942839894, 2.297579767218113, 1.6109817322194828]}}