{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:15:44.256555", "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": "2021-Nov-13_to_2021-Nov-17_255.5_34.0"}, "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": 2021110001890}, "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": "November 13 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 17 2021"}, "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": 81753.04724546884}, "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": 34.0}, "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": 255.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "255.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 251.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 255.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 37.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-108.03, 34.53], [-107.68, 34.68], [-107.53, 35.03], [-107.18, 35.18], [-107.03, 35.53], [-106.5, 35.75], [-106.25, 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{"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America", "C.North-America", "N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.03, 34.03], [-108.5, 34.25], [-107.97, 34.03], [-107.75, 33.5], [-107.97, 32.97], [-108.5, 32.75], [-109.03, 32.97], [-109.25, 33.5], [-109.03, 34.03]]]]}, "2021-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.25, 33.5], [-109.03, 34.03], [-108.5, 34.25], [-108.19999999999999, 34.13], [-108.03, 34.53], [-107.5, 34.75], [-106.97, 34.53], [-106.75, 34.0], [-106.85, 33.75], [-106.75, 33.5], [-106.97, 32.97], [-107.32, 32.82], [-107.47, 32.47], [-108.0, 32.25], [-108.53, 32.47], [-108.68, 32.82], [-109.03, 32.97], [-109.25, 33.5]]], [[[-106.75, 35.0], [-106.53, 35.53], [-106.18, 35.68], [-106.15, 35.75], [-106.25, 36.0], [-106.03, 36.53], [-105.68, 36.68], [-105.65, 36.75], [-105.75, 37.0], [-105.53, 37.53], [-105.18, 37.68], [-105.03, 38.03], [-104.5, 38.25], [-103.97000000000003, 38.03], [-103.75, 37.5], [-103.85000000000002, 37.25], [-103.75, 37.0], [-103.97000000000003, 36.47], [-104.32, 36.32], [-104.47, 35.97], [-104.82, 35.82], [-104.85, 35.75], [-104.75, 35.5], [-104.85, 35.25], [-104.82, 35.18], [-104.47, 35.03], [-104.32, 34.68], [-103.97000000000003, 34.53], [-103.75, 34.0], [-103.85000000000002, 33.75], [-103.75, 33.5], [-103.97000000000003, 32.97], [-104.32, 32.82], [-104.47, 32.47], [-105.0, 32.25], [-105.25, 32.35], [-105.5, 32.25], [-106.03, 32.47], [-106.25, 33.0], [-106.03999999999999, 33.5], [-106.25, 34.0], [-106.15, 34.25], [-106.18, 34.32], [-106.53, 34.47], [-106.75, 35.0]]]]}, "2021-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.03, 32.97], [-109.25, 33.5], [-109.03, 34.03], [-108.5, 34.25], [-108.19999999999999, 34.13], [-108.03, 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18.178219741709484]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.972859888773826, 5.397763640346251, 6.589675734022769, 6.630911395682943, 4.968792912216708]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.972859888773826, 6.749867394467572, 11.041310960970065, 10.191904376439822, 7.2396999810615625]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.189049503079182, 1.3056016051847892, 1.6230790092447043, 1.6624838567342248, 1.3535265498754259]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.189049503079182, 1.5681047737872433, 2.1015726701184425, 2.25170057693039, 1.8539729109997036]}}