{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:32:31.302832", "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-Sep-18_to_2022-Sep-20_280.5_63.5"}, "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": 2022090002239}, "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": "September 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 20 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": 58372.38571212004}, "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.E.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": ["Hudson Bay", "Hudson Strait"]}, "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": 63.5}, "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": 280.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "280.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 270.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 281.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 60.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 63.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.5, 61.75], [-88.25, 61.65], [-88.0, 61.75], [-87.75, 61.65], [-87.68, 61.68], [-87.53, 62.03], [-87.0, 62.25], [-86.75, 62.15], [-86.5, 62.25], [-86.25, 62.15], [-86.18, 62.18], [-86.03, 62.53], [-85.5, 62.75], [-85.25, 62.65], [-85.0, 62.75], [-84.75, 62.65], [-84.5, 62.75], [-84.25, 62.65], [-84.0, 62.75], [-83.75, 62.65], [-83.68, 62.68], [-83.53, 63.03], [-83.0, 63.25], [-82.75, 63.15], [-82.5, 63.25], [-82.25, 63.15], [-82.0, 63.25], [-81.75, 63.15], [-81.68, 63.18], [-81.53, 63.53], [-81.0, 63.75], [-80.75, 63.65], [-80.68, 63.68], [-80.53, 64.03], [-80.0, 64.25], [-79.75, 64.15], [-79.5, 64.25], [-79.25, 64.15], [-79.0, 64.25], [-78.47, 64.03], [-78.32, 63.68], [-77.97, 63.53], [-77.75, 63.0], [-77.97, 62.47], [-78.5, 62.25], [-78.75, 62.35], [-79.0, 62.25], [-79.25, 62.35], [-79.5, 62.25], [-79.75, 62.35], [-80.0, 62.25], [-80.25, 62.35], [-80.5, 62.25], [-80.75, 62.35], [-80.82, 62.32], [-80.97, 61.97], [-81.5, 61.75], [-81.75, 61.85], [-81.82, 61.82], [-81.97, 61.47], [-82.5, 61.25], [-82.75, 61.35], [-83.0, 61.25], [-83.25, 61.35], [-83.32, 61.32], [-83.47, 60.97], [-84.0, 60.75], [-84.25, 60.85], [-84.5, 60.75], [-84.75, 60.85], [-84.82, 60.82], [-84.97, 60.47], [-85.5, 60.25], [-85.75, 60.35], [-85.82, 60.32], [-85.97, 59.97], [-86.5, 59.75], [-86.75, 59.85], [-87.0, 59.75], [-87.25, 59.85], [-87.5, 59.75], [-87.75, 59.85], [-88.0, 59.75], [-88.25, 59.85], [-88.5, 59.75], [-88.75, 59.85], [-89.0, 59.75], [-89.53, 59.97], [-89.75, 60.5], [-89.53, 61.03], [-89.18, 61.18], [-89.03, 61.53], [-88.5, 61.75]]]]}, "2022-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.5, 61.75], [-88.25, 61.65], [-88.0, 61.75], [-87.75, 61.65], [-87.68, 61.68], [-87.53, 62.03], [-87.0, 62.25], [-86.75, 62.15], [-86.5, 62.25], [-86.25, 62.15], [-86.18, 62.18], [-86.03, 62.53], [-85.5, 62.75], [-85.25, 62.65], [-85.0, 62.75], [-84.75, 62.65], [-84.5, 62.75], [-84.25, 62.65], [-84.0, 62.75], [-83.75, 62.65], [-83.68, 62.68], [-83.53, 63.03], [-83.0, 63.25], [-82.75, 63.15], [-82.5, 63.25], [-82.25, 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duration", "value": 3.0618331429756234}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.870346064652097, 6.886217249866149, 6.195866622524363]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.838159711807521, 7.684734852553845, 7.338610329735047]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.1468875195328394, 3.299108556297379, 2.7395033530966515]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.014489840078227, 4.23225355314338, 3.1541654367762817]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7974355048090682, 1.8825601989775678, 1.5535957870158679]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.669036231595791, 2.7939526851264773, 1.7858923363122086]}}