{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:14.893802", "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": "2022-Jan-23_to_2022-Jan-25_206.5_69.0"}, "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": 2022010002566}, "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": "January 23 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 25 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 82044.12365248433}, "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": 69.0}, "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": 206.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "206.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 201.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 213.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 67.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 69.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-159.75, 69.5], [-159.53, 70.03], [-159.0, 70.25], [-158.75, 70.15], [-158.5, 70.25], [-158.25, 70.15], [-158.0, 70.25], 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[-148.0, 67.25], [-148.25, 67.35], [-148.5, 67.25], [-148.75, 67.35], [-149.0, 67.25], [-149.25, 67.35], [-149.32, 67.32], [-149.47, 66.97], [-150.0, 66.75], [-150.25, 66.85], [-150.5, 66.75], [-151.03, 66.97], [-151.18, 67.32], [-151.25, 67.35], [-151.5, 67.25], [-151.75, 67.35], [-152.0, 67.25], [-152.25, 67.35], [-152.5, 67.25], [-153.0, 67.46], [-153.5, 67.25], [-154.03, 67.47], [-154.18, 67.82], [-154.25, 67.85], [-154.32, 67.82], [-154.47, 67.47], [-155.0, 67.25], [-155.53, 67.47], [-155.68, 67.82], [-155.75, 67.85], [-156.0, 67.75], [-156.25, 67.85], [-156.5, 67.75], [-156.75, 67.85], [-157.0, 67.75], [-157.25, 67.85], [-157.5, 67.75], [-158.03, 67.97], [-158.18, 68.32], [-158.53, 68.47], [-158.68, 68.82], [-158.75, 68.85], [-159.0, 68.75], [-159.53, 68.97], [-159.75, 69.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-159.0, 68.75], [-159.53, 68.97], [-159.75, 69.5], [-159.53, 70.03], [-159.0, 70.25], [-158.75, 70.15], [-158.5, 70.25], [-158.25, 70.15], [-158.0, 70.25], [-157.75, 70.15], [-157.5, 70.25], [-157.25, 70.15], [-157.0, 70.25], [-156.75, 70.15], [-156.5, 70.25], [-156.25, 70.15], [-156.0, 70.25], [-155.75, 70.15], [-155.5, 70.25], [-154.97, 70.03], [-154.82, 69.68], [-154.75, 69.65], [-154.5, 69.75], [-154.25, 69.65], [-154.0, 69.75], [-153.75, 69.65], [-153.5, 69.75], [-153.25, 69.65], [-153.0, 69.75], [-152.75, 69.65], [-152.5, 69.75], [-152.25, 69.65], [-152.0, 69.75], [-151.75, 69.65], [-151.5, 69.75], [-151.25, 69.65], [-151.0, 69.75], [-150.75, 69.65], [-150.5, 69.75], [-150.25, 69.65], [-150.0, 69.75], [-149.75, 69.65], [-149.5, 69.75], [-149.25, 69.65], [-149.0, 69.75], [-148.75, 69.65], [-148.68, 69.68], [-148.53, 70.03], [-148.0, 70.25], [-147.75, 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maximum t2m anomalies.", "value": [17.63914864213595, 21.038076741058433, 20.069283061965052]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5905650857018196, 2.048404308364971, 1.8547938940877513]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.928696651813622, 2.350664495170404, 2.434077363292657]}}