{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:24.689964", "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": "2025-Oct-05_to_2025-Oct-08_298.5_58.5"}, "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": 2025100001253}, "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": "October 05 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 08 2025"}, "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": 76073.46393313725}, "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": ["Labrador Sea"]}, "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": 58.5}, "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": 298.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "298.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 291.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 299.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 58.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 61.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-66.47, 58.47], [-66.82, 58.32], [-66.97, 57.97], [-67.5, 57.75], [-68.03, 57.97], [-68.18, 58.32], [-68.25, 58.35], [-68.5, 58.25], [-69.03, 58.47], [-69.25, 59.0], [-69.03, 59.53], [-68.68, 59.68], [-68.53, 60.03], [-68.18, 60.18], [-68.03, 60.53], [-67.5, 60.75], [-67.25, 60.65], [-67.0, 60.75], [-66.75, 60.65], [-66.68, 60.68], [-66.65, 60.75], [-66.75, 61.0], [-66.53, 61.53], [-66.0, 61.75], [-65.75, 61.65], [-65.5, 61.75], [-65.25, 61.65], [-65.0, 61.75], [-64.75, 61.65], [-64.5, 61.75], [-64.25, 61.65], [-64.0, 61.75], [-63.75, 61.65], [-63.5, 61.75], [-63.25, 61.65], [-63.0, 61.75], [-62.75, 61.65], [-62.5, 61.75], [-61.97, 61.53], [-61.82, 61.18], [-61.75, 61.15], [-61.5, 61.25], [-60.97, 61.03], [-60.75, 60.5], [-60.96, 60.0], [-60.75, 59.5], [-60.85, 59.25], [-60.82, 59.18], [-60.47, 59.03], [-60.25, 58.5], [-60.47, 57.97], [-60.82, 57.82], [-60.97, 57.47], [-61.5, 57.25], [-62.03, 57.47], [-62.18, 57.82], [-62.25, 57.85], [-62.5, 57.75], [-63.03, 57.97], [-63.18, 58.32], [-63.53, 58.47], [-63.68, 58.82], [-64.03, 58.97], [-64.18, 59.32], [-64.5, 59.46], [-65.0, 59.25], [-65.25, 59.35], [-65.5, 59.25], [-65.75, 59.35], [-66.0, 59.25], [-66.25, 59.35], [-66.37, 59.3], [-66.25, 59.0], [-66.47, 58.47]]]]}}, "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": {"2025-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.0, 60.25], [-67.47000000000003, 60.03], [-67.32, 59.68], [-67.25, 59.65], [-67.0, 59.75], [-66.47000000000003, 59.53], [-66.25, 59.0], [-66.47000000000003, 58.47], [-66.82, 58.32], [-66.97000000000003, 57.97], [-67.5, 57.75], [-68.02999999999997, 57.97], [-68.18, 58.32], [-68.25, 58.35], [-68.5, 58.25], [-69.02999999999997, 58.47], [-69.25, 59.0], [-69.02999999999997, 59.53], [-68.68, 59.68], [-68.52999999999997, 60.03], [-68.0, 60.25]]], [[[-65.0, 59.75], [-65.52999999999997, 59.97], [-65.75, 60.5], [-65.52999999999997, 61.03], [-65.0, 61.25], [-64.47000000000003, 61.03], [-64.25, 60.5], [-64.47000000000003, 59.97], [-65.0, 59.75]]]]}, "2025-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.52999999999997, 60.03], [-68.18, 60.18], [-68.02999999999997, 60.53], [-67.5, 60.75], [-67.25, 60.65], [-67.0, 60.75], [-66.75, 60.65], [-66.68, 60.68], [-66.64999999999998, 60.75], [-66.75, 61.0], [-66.52999999999997, 61.53], [-66.0, 61.75], [-65.75, 61.65], [-65.5, 61.75], [-65.25, 61.65], [-65.0, 61.75], [-64.75, 61.65], [-64.5, 61.75], [-64.25, 61.65], [-64.0, 61.75], [-63.75, 61.65], [-63.5, 61.75], [-63.25, 61.65], [-63.0, 61.75], [-62.75, 61.65], [-62.5, 61.75], [-61.97000000000003, 61.53], [-61.81999999999999, 61.18], [-61.75, 61.15], [-61.5, 61.25], [-60.97000000000003, 61.03], [-60.75, 60.5], [-60.95999999999998, 60.0], [-60.75, 59.5], [-60.85000000000002, 59.25], [-60.81999999999999, 59.18], [-60.47000000000003, 59.03], [-60.25, 58.5], [-60.47000000000003, 57.97], [-60.81999999999999, 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amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.5341006074655565}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.4756846473330825, 4.8319394844730255, 3.6910737692904263, 2.9706875586695105]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.101382191975915, 9.216153717041038, 6.17026036580404, 4.215407307942712]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.4655625673964647, 3.3730312391089834, 2.3356603243816867, 1.815396867955448]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.4106747904852455, 6.714462436249107, 3.862342508360996, 2.439829703307339]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6292671459930137, 2.732730259544161, 1.921251551797269, 1.5842131395649368]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9146648099158037, 4.046773457592165, 2.8359406878460627, 2.0530071394789053]}}