{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:18:42.920598", "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": "2020-Jan-24_to_2020-Jan-27_235.0_57.5"}, "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": 2020010002255}, "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 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 27 2020"}, "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": 57986.263799189655}, "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", "United States"]}, "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": 57.5}, "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": 235.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "235.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 229.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 235.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 55.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 59.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-130.5, 56.75], [-130.25, 56.65], [-130.18, 56.68], [-130.03, 57.03], [-129.68, 57.18], [-129.53, 57.53], [-129.0, 57.75], [-128.47, 57.53], [-128.25, 57.0], [-128.35, 56.75], [-128.25, 56.5], [-128.47, 55.97], [-129.0, 55.75], [-129.25, 55.85], [-129.32, 55.82], [-129.47, 55.47], [-129.82, 55.32], [-129.97, 54.97], [-130.5, 54.75], [-131.03, 54.97], [-131.25, 55.5], [-131.15, 55.75], [-131.25, 56.0], [-131.03, 56.53], [-130.5, 56.75]]], [[[-126.25, 57.5], [-126.03, 58.03], [-125.5, 58.25], [-125.25, 58.15], [-125.0, 58.25], [-124.47, 58.03], [-124.25, 57.5], [-124.47, 56.97], [-125.0, 56.75], [-125.25, 56.85], [-125.5, 56.75], [-126.03, 56.97], [-126.25, 57.5]]]]}, "2020-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-131.04, 56.5], [-131.25, 57.0], [-131.15, 57.25], [-131.25, 57.5], [-131.03, 58.03], [-130.5, 58.25], [-130.25, 58.15], [-130.18, 58.18], [-130.15, 58.25], [-130.25, 58.5], [-130.03, 59.03], [-129.5, 59.25], [-129.25, 59.15], [-129.0, 59.25], [-128.75, 59.15], [-128.5, 59.25], [-127.97, 59.03], [-127.82, 58.68], [-127.75, 58.65], [-127.62, 58.7], [-127.75, 59.0], [-127.53, 59.53], [-127.0, 59.75], [-126.75, 59.65], [-126.5, 59.75], [-126.25, 59.65], [-126.0, 59.75], [-125.47, 59.53], [-125.25, 59.0], [-125.37, 58.7], [-125.0, 58.54], [-124.5, 58.75], [-123.97, 58.53], [-123.75, 58.0], [-123.85, 57.75], [-123.75, 57.5], [-123.97, 56.97], [-124.5, 56.75], [-124.75, 56.85], [-125.0, 56.75], [-125.25, 56.85], [-125.5, 56.75], [-126.03, 56.97], [-126.18, 57.32], [-126.25, 57.35], [-126.32, 57.32], [-126.47, 56.97], [-127.0, 56.75], [-127.25, 56.85], [-127.5, 56.75], [-128.03, 56.97], [-128.18, 57.32], [-128.25, 57.35], [-128.32, 57.32], [-128.35, 57.25], [-128.25, 57.0], [-128.35, 56.75], [-128.25, 56.5], [-128.47, 55.97], [-129.0, 55.75], [-129.25, 55.85], [-129.32, 55.82], [-129.47, 55.47], [-129.82, 55.32], [-129.97, 54.97], [-130.5, 54.75], [-131.03, 54.97], [-131.25, 55.5], [-131.15, 55.75], [-131.25, 56.0], [-131.04, 56.5]]]]}, "2020-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-131.04, 56.5], [-131.25, 57.0], [-131.15, 57.25], [-131.25, 57.5], [-131.03, 58.03], [-130.5, 58.25], [-130.25, 58.15], [-130.18, 58.18], [-130.15, 58.25], [-130.25, 58.5], [-130.03, 59.03], [-129.5, 59.25], [-129.25, 59.15], [-129.0, 59.25], [-128.75, 59.15], [-128.5, 59.25], [-127.97, 59.03], [-127.82, 58.68], [-127.75, 58.65], [-127.62, 58.7], [-127.75, 59.0], [-127.53, 59.53], [-127.0, 59.75], [-126.75, 59.65], [-126.5, 59.75], [-126.25, 59.65], [-126.0, 59.75], [-125.47, 59.53], [-125.25, 59.0], [-125.37, 58.7], [-125.0, 58.54], [-124.5, 58.75], [-123.97, 58.53], [-123.75, 58.0], [-123.85, 57.75], [-123.75, 57.5], [-123.97, 56.97], [-124.5, 56.75], [-124.75, 56.85], [-125.0, 56.75], [-125.25, 56.85], [-125.5, 56.75], [-126.03, 56.97], [-126.18, 57.32], [-126.25, 57.35], [-126.32, 57.32], [-126.47, 56.97], [-127.0, 56.75], [-127.25, 56.85], [-127.5, 56.75], [-128.03, 56.97], [-128.18, 57.32], [-128.25, 57.35], [-128.32, 57.32], [-128.35, 57.25], [-128.25, 57.0], [-128.35, 56.75], [-128.25, 56.5], [-128.47, 55.97], [-129.0, 55.75], [-129.25, 55.85], [-129.32, 55.82], [-129.47, 55.47], [-129.82, 55.32], [-129.97, 54.97], [-130.5, 54.75], [-131.03, 54.97], [-131.25, 55.5], [-131.15, 55.75], [-131.25, 56.0], [-131.04, 56.5]]]]}, "2020-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-131.03, 58.03], [-130.5, 58.25], [-130.25, 58.15], [-130.18, 58.18], [-130.15, 58.25], [-130.25, 58.5], [-130.03, 59.03], [-129.5, 59.25], [-129.25, 59.15], [-129.0, 59.25], [-128.75, 59.15], [-128.5, 59.25], [-127.97, 59.03], [-127.82, 58.68], [-127.75, 58.65], [-127.62, 58.7], [-127.75, 59.0], [-127.53, 59.53], [-127.0, 59.75], [-126.75, 59.65], [-126.5, 59.75], [-126.25, 59.65], [-126.0, 59.75], [-125.47, 59.53], [-125.25, 59.0], [-125.37, 58.7], [-125.0, 58.54], [-124.5, 58.75], [-123.97, 58.53], [-123.75, 58.0], [-123.85, 57.75], [-123.75, 57.5], [-123.97, 56.97], [-124.5, 56.75], [-124.75, 56.85], [-125.0, 56.75], [-125.25, 56.85], [-125.5, 56.75], [-126.03, 56.97], [-126.18, 57.32], [-126.25, 57.35], [-126.32, 57.32], [-126.47, 56.97], [-127.0, 56.75], [-127.25, 56.85], [-127.5, 56.75], [-128.03, 56.97], [-128.18, 57.32], [-128.25, 57.35], [-128.32, 57.32], [-128.35, 57.25], [-128.25, 57.0], [-128.47, 56.47], [-128.82, 56.32], [-128.97, 55.97], [-129.5, 55.75], [-129.75, 55.85], [-130.0, 55.75], [-130.53, 55.97], [-130.68, 56.32], [-131.03, 56.47], [-131.25, 57.0], [-131.15, 57.25], [-131.25, 57.5], [-131.03, 58.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.436008772069727}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.010752548589073}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-1.4973941730637534, -3.1385564822109586, -4.062210065366742, -4.4485975960362225]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.5512086426693372, 2.236990876286825, 2.043911514044396, -1.3539417038389843]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.7316988188651194, 9.560528485373709, 8.625820109672352, 9.154717303828253]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.352571488400315, 12.436008772069727, 10.892389405144797, 11.434862402408498]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.0606326637199088, 1.2471372659359936, 1.1498363282284527, 1.2034843643892297]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.143619605692186, 1.5251466252440964, 1.2817642716526743, 1.3271621230174186]}}