{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:21.235343", "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-22_to_2022-Sep-24_263.5_60.0"}, "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": 2022090002503}, "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 22 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 24 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": 107927.26351112449}, "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": 60.0}, "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": 263.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "263.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 258.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 263.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 63.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-102.18, 61.18], [-102.15, 61.25], [-102.25, 61.5], [-102.15, 61.75], [-102.25, 62.0], [-102.15, 62.25], [-102.25, 62.5], [-102.15, 62.75], [-102.25, 63.0], [-102.03, 63.53], [-101.5, 63.75], [-101.25, 63.65], [-101.0, 63.75], [-100.75, 63.65], [-100.5, 63.75], [-100.25, 63.65], [-100.0, 63.75], [-99.47, 63.53], [-99.32, 63.18], [-99.25, 63.15], [-99.0, 63.25], [-98.5, 63.04], [-98.0, 63.25], [-97.47, 63.03], [-97.25, 62.5], [-97.35, 62.25], [-97.32, 62.18], [-96.97, 62.03], [-96.82, 61.68], [-96.75, 61.65], [-96.5, 61.75], [-95.97, 61.53], [-95.75, 61.0], [-95.85, 60.75], [-95.75, 60.5], [-95.85, 60.25], [-95.75, 60.0], [-95.97, 59.47], [-96.5, 59.25], [-96.75, 59.35], [-97.0, 59.25], [-97.25, 59.35], [-97.32, 59.32], [-97.47, 58.97], [-98.0, 58.75], [-98.25, 58.85], [-98.5, 58.75], [-98.75, 58.85], [-99.0, 58.75], [-99.25, 58.85], [-99.5, 58.75], [-99.75, 58.85], [-100.0, 58.75], [-100.25, 58.85], [-100.5, 58.75], [-100.75, 58.85], [-100.82, 58.82], [-100.97, 58.47], [-101.5, 58.25], [-102.03, 58.47], [-102.25, 59.0], [-102.15, 59.25], [-102.18, 59.32], [-102.53, 59.47], [-102.75, 60.0], [-102.65, 60.25], [-102.75, 60.5], [-102.53, 61.03], [-102.18, 61.18]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.75, 60.5], [-102.52999999999997, 61.03], [-102.18, 61.18], [-102.14999999999998, 61.25], [-102.25, 61.5], [-102.14999999999998, 61.75], [-102.25, 62.0], [-102.14999999999998, 62.25], [-102.25, 62.5], [-102.14999999999998, 62.75], [-102.25, 63.0], [-102.02999999999997, 63.53], [-101.5, 63.75], [-101.25, 63.65], [-101.0, 63.75], [-100.75, 63.65], [-100.5, 63.75], [-100.25, 63.65], [-100.0, 63.75], [-99.47000000000003, 63.53], [-99.32, 63.18], [-99.25, 63.15], [-99.0, 63.25], [-98.5, 63.04], [-98.0, 63.25], [-97.47000000000003, 63.03], [-97.25, 62.5], [-97.35000000000002, 62.25], [-97.32, 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"Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.387046806796454}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.425709176446503, 10.327076822378672, 10.403688320566857]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.005864562657678, 12.557178506756202, 12.798624653011245]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.716997096981476, 6.597015915630063, 6.847127407777819]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.499496081385075, 7.627062190282686, 8.938236245128053]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4831010617187523, 1.6982881060634993, 1.7740755894455078]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5967922756351183, 1.9905972914660637, 2.3832974328763097]}}