{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:05.175309", "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-Jan-24_to_2023-Jan-27_242.0_53.5"}, "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": 2023010002660}, "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 24 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 27 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": 78029.22777134672}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": 53.5}, "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": 242.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "242.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 238.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 243.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.25, 55.0], [-120.03, 55.53], [-119.5, 55.75], [-119.25, 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[-117.75, 55.5], [-117.85, 55.25], [-117.75, 55.0], [-117.85, 54.75], [-117.8, 54.63], [-117.5, 54.75], [-116.97, 54.53], [-116.82, 54.18], [-116.47, 54.03], [-116.25, 53.5], [-116.47, 52.97], [-117.0, 52.75], [-117.25, 52.85], [-117.37, 52.8], [-117.25, 52.5], [-117.47, 51.97], [-118.0, 51.75], [-118.25, 51.85], [-118.32, 51.82], [-118.47, 51.47], [-118.82, 51.32], [-118.97, 50.97], [-119.32, 50.82], [-119.47, 50.47], [-120.0, 50.25], [-120.25, 50.35], [-120.5, 50.25], [-121.03, 50.47], [-121.2, 50.88], [-121.5, 50.75], [-122.03, 50.97], [-122.25, 51.5], [-122.03, 52.03], [-121.68, 52.18], [-121.65, 52.25], [-121.75, 52.5]], [[-119.93, 54.43], [-119.82, 54.18], [-119.75, 54.15], [-119.68, 54.18], [-119.62, 54.3], [-119.93, 54.43]]]]}, "2023-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.75, 52.5], [-121.65, 52.75], [-121.75, 53.0], [-121.65, 53.25], [-121.75, 53.5], [-121.65, 53.75], [-121.68, 53.82], [-122.03, 53.97], [-122.25, 54.5], [-122.03, 55.03], 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amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 16.044358892565413}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.849890489300225}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [0.7247864824166754, -1.3602645394421984, 1.8506120931022565, -1.3689275468888695]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.6451721809910964, 2.938329024851896, 7.098138416635663, 1.2226429665899445]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [10.130198632446058, 7.659830343567553, 10.78407576664577, 7.5148499753851015]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": 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