{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:38.814542", "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-Apr-06_to_2023-Apr-09_259.0_67.0"}, "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": 2023040001557}, "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": "April 06 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 09 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": 113431.40540128002}, "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": ["Canada"]}, "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": 67.0}, "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": 259.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "259.0\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": 260.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 61.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 67.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-108.0, 62.75], [-107.75, 62.65], [-107.5, 62.75], [-107.25, 62.65], [-107.18, 62.68], [-107.03, 63.03], [-106.68, 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61.97], [-103.32, 61.82], [-103.47, 61.47], [-104.0, 61.25], [-104.25, 61.35], [-104.32, 61.32], [-104.47, 60.97], [-105.0, 60.75], [-105.25, 60.85], [-105.5, 60.75], [-105.75, 60.85], [-106.0, 60.75], [-106.25, 60.85], [-106.5, 60.75], [-106.75, 60.85], [-107.0, 60.75], [-107.25, 60.85], [-107.5, 60.75], [-107.75, 60.85], [-107.82, 60.82], [-107.97, 60.47], [-108.5, 60.25], [-109.03, 60.47], [-109.25, 61.0], [-109.03, 61.53], [-108.68, 61.68], [-108.65, 61.75], [-108.75, 62.0], [-108.53, 62.53], [-108.0, 62.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America", "N.E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.75, 67.0], [-102.52999999999997, 67.53], [-102.0, 67.75], [-101.75, 67.65], [-101.5, 67.75], [-101.25, 67.65], 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"anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.683469041437775, 12.608889883258826, 15.661432639638122, 12.24715869505033]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3846137736295334, 1.5188363448608202, 2.1837388604729013, 1.6070143346570813]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4503985357228355, 1.8796919838168267, 2.4892127941361535, 2.2215338252842227]}}