{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:38.778024", "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": "2025-Jul-15_to_2025-Jul-18_288.0_40.5"}, "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": 2025070002247}, "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": "July 15 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 18 2025"}, "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": 73501.80085373446}, "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": ["Atlantic Ocean"]}, "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": 40.5}, "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": 288.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "288.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 285.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 290.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-74.53, 40.03], [-74.18, 40.18], [-74.15, 40.25], [-74.25, 40.5], [-74.03, 41.03], [-73.5, 41.25], [-73.25, 41.15], [-73.0, 41.25], [-72.75, 41.15], [-72.5, 41.25], [-72.25, 41.15], [-72.18, 41.18], [-72.03, 41.53], [-71.5, 41.75], [-71.25, 41.65], [-71.18, 41.68], [-71.03, 42.03], [-70.5, 42.25], [-69.97, 42.03], [-69.75, 41.5], [-69.85, 41.25], [-69.82, 41.18], [-69.47, 41.03], [-69.25, 40.5], [-69.35, 40.25], [-69.25, 40.0], [-69.47, 39.47], [-70.0, 39.25], [-70.5, 39.46], [-71.0, 39.25], [-71.25, 39.35], [-71.5, 39.25], [-71.75, 39.35], [-71.82, 39.32], [-71.85, 39.25], [-71.75, 39.0], [-71.97, 38.47], [-72.5, 38.25], [-72.75, 38.35], [-72.82, 38.32], [-72.97, 37.97], [-73.5, 37.75], [-73.75, 37.85], [-74.0, 37.75], [-74.25, 37.85], [-74.5, 37.75], [-75.03, 37.97], [-75.25, 38.5], [-75.15, 38.75], [-75.25, 39.0], [-75.03, 39.53], [-74.68, 39.68], [-74.53, 40.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.02999999999997, 41.53], [-71.5, 41.75], [-71.25, 41.65], [-71.0, 41.75], [-70.47000000000003, 41.53], [-70.32, 41.18], [-70.25, 41.15], [-70.0, 41.25], [-69.47000000000003, 41.03], [-69.25, 40.5], [-69.35000000000002, 40.25], [-69.25, 40.0], [-69.47000000000003, 39.47], [-70.0, 39.25], [-70.5, 39.46], [-71.0, 39.25], [-71.52999999999997, 39.47], [-71.68, 39.82], [-71.75, 39.85], [-72.0, 39.75], [-72.52999999999997, 39.97], [-72.75, 40.5], [-72.52999999999997, 41.03], [-72.18, 41.18], [-72.02999999999997, 41.53]]]]}, "2025-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, 39.0], [-75.02999999999997, 39.53], [-74.68, 39.68], [-74.52999999999997, 40.03], [-74.18, 40.18], [-74.14999999999998, 40.25], [-74.25, 40.5], [-74.02999999999997, 41.03], [-73.5, 41.25], [-73.25, 41.15], [-73.0, 41.25], [-72.75, 41.15], [-72.5, 41.25], [-72.25, 41.15], [-72.18, 41.18], [-72.02999999999997, 41.53], [-71.5, 41.75], [-71.25, 41.65], [-71.18, 41.68], [-71.02999999999997, 42.03], [-70.5, 42.25], [-69.97000000000003, 42.03], [-69.75, 41.5], [-69.85000000000002, 41.25], [-69.82, 41.18], [-69.47000000000003, 41.03], [-69.25, 40.5], [-69.35000000000002, 40.25], [-69.25, 40.0], [-69.47000000000003, 39.47], [-70.0, 39.25], [-70.5, 39.46], [-71.0, 39.25], [-71.25, 39.35], [-71.5, 39.25], [-71.75, 39.35], [-71.82, 39.32], [-71.85000000000002, 39.25], [-71.75, 39.0], [-71.97000000000003, 38.47], [-72.5, 38.25], [-72.75, 38.35], [-72.82, 38.32], [-72.97000000000003, 37.97], [-73.5, 37.75], [-73.75, 37.85], [-74.0, 37.75], [-74.25, 37.85], [-74.5, 37.75], [-75.02999999999997, 37.97], [-75.25, 38.5], [-75.14999999999998, 38.75], [-75.25, 39.0]]]]}, "2025-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, 39.0], [-75.02999999999997, 39.53], [-74.68, 39.68], [-74.52999999999997, 40.03], [-74.18, 40.18], [-74.14999999999998, 40.25], 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"anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.6744436949887245, 2.866927007723689, 3.4748996428141368, 2.968241925114228]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4257340993227032, 1.6118793587729465, 2.029521251119261, 1.6282855068294597]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.671267041764887, 1.9611718437822938, 2.3190545517579886, 2.1136132304715973]}}