{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:12.776947", "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-Mar-23_to_2025-Mar-26_260.0_29.5"}, "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": 2025030002271}, "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": "March 23 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 26 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": 64868.77100166984}, "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": ["United States"]}, "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": 29.5}, "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": 260.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "260.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 260.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 264.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-100.53, 30.03], [-100.0, 30.25], [-99.75, 30.15], [-99.5, 30.25], [-99.25, 30.15], [-99.0, 30.25], [-98.5, 30.04], [-98.0, 30.25], [-97.75, 30.15], [-97.5, 30.25], [-97.25, 30.15], [-97.0, 30.25], [-96.75, 30.15], [-96.68, 30.18], [-96.53, 30.53], [-96.0, 30.75], [-95.47, 30.53], [-95.25, 30.0], [-95.35, 29.75], [-95.25, 29.5], [-95.47, 28.97], [-95.82, 28.82], [-95.97, 28.47], [-96.5, 28.25], [-96.75, 28.35], [-97.0, 28.25], [-97.25, 28.35], [-97.32, 28.32], [-97.47, 27.97], [-98.0, 27.75], [-98.25, 27.85], [-98.32, 27.82], [-98.47, 27.47], [-99.0, 27.25], [-99.25, 27.35], [-99.5, 27.25], [-100.03, 27.47], [-100.18, 27.82], [-100.53, 27.97], [-100.75, 28.5], [-100.65, 28.75], [-100.75, 29.0], [-100.65, 29.25], [-100.75, 29.5], [-100.53, 30.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.75, 29.0], [-100.64999999999998, 29.25], [-100.75, 29.5], [-100.52999999999997, 30.03], [-100.0, 30.25], [-99.75, 30.15], [-99.5, 30.25], [-99.25, 30.15], [-99.0, 30.25], [-98.5, 30.04], [-98.0, 30.25], [-97.75, 30.15], [-97.5, 30.25], [-97.25, 30.15], [-97.0, 30.25], [-96.75, 30.15], [-96.68, 30.18], [-96.52999999999997, 30.53], [-96.0, 30.75], [-95.47000000000003, 30.53], [-95.25, 30.0], [-95.35000000000002, 29.75], [-95.25, 29.5], [-95.47000000000003, 28.97], [-95.82, 28.82], [-95.97000000000003, 28.47], [-96.5, 28.25], [-96.75, 28.35], [-97.0, 28.25], [-97.25, 28.35], [-97.32, 28.32], [-97.47000000000003, 27.97], [-98.0, 27.75], [-98.25, 27.85], [-98.32, 27.82], [-98.47000000000003, 27.47], [-99.0, 27.25], [-99.25, 27.35], [-99.5, 27.25], [-100.02999999999997, 27.47], [-100.18, 27.82], [-100.52999999999997, 27.97], [-100.75, 28.5], [-100.64999999999998, 28.75], [-100.75, 29.0]]]]}, "2025-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.75, 29.0], [-100.64999999999998, 29.25], [-100.75, 29.5], [-100.52999999999997, 30.03], [-100.0, 30.25], [-99.75, 30.15], [-99.5, 30.25], [-99.25, 30.15], [-99.0, 30.25], [-98.5, 30.04], [-98.0, 30.25], [-97.75, 30.15], [-97.5, 30.25], [-97.25, 30.15], [-97.0, 30.25], [-96.75, 30.15], [-96.68, 30.18], [-96.52999999999997, 30.53], [-96.0, 30.75], [-95.47000000000003, 30.53], [-95.25, 30.0], [-95.35000000000002, 29.75], [-95.25, 29.5], [-95.47000000000003, 28.97], [-95.82, 28.82], [-95.97000000000003, 28.47], [-96.5, 28.25], [-96.75, 28.35], [-97.0, 28.25], [-97.25, 28.35], [-97.32, 28.32], [-97.47000000000003, 27.97], [-98.0, 27.75], [-98.25, 27.85], [-98.32, 27.82], [-98.47000000000003, 27.47], [-99.0, 27.25], [-99.25, 27.35], [-99.5, 27.25], [-100.02999999999997, 27.47], [-100.18, 27.82], [-100.52999999999997, 27.97], [-100.75, 28.5], [-100.64999999999998, 28.75], [-100.75, 29.0]]]]}, "2025-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.75, 29.0], [-100.64999999999998, 29.25], [-100.75, 29.5], [-100.52999999999997, 30.03], [-100.0, 30.25], [-99.75, 30.15], [-99.5, 30.25], [-99.25, 30.15], [-99.0, 30.25], [-98.5, 30.04], [-98.0, 30.25], [-97.75, 30.15], [-97.5, 30.25], [-97.25, 30.15], [-97.0, 30.25], [-96.75, 30.15], [-96.68, 30.18], [-96.52999999999997, 30.53], [-96.0, 30.75], [-95.47000000000003, 30.53], [-95.25, 30.0], [-95.35000000000002, 29.75], [-95.25, 29.5], [-95.47000000000003, 28.97], [-95.82, 28.82], [-95.97000000000003, 28.47], [-96.5, 28.25], [-96.75, 28.35], [-97.0, 28.25], [-97.25, 28.35], [-97.32, 28.32], [-97.47000000000003, 27.97], [-98.0, 27.75], [-98.25, 27.85], [-98.32, 27.82], [-98.47000000000003, 27.47], [-99.0, 27.25], [-99.25, 27.35], [-99.5, 27.25], [-100.02999999999997, 27.47], [-100.18, 27.82], [-100.52999999999997, 27.97], [-100.75, 28.5], [-100.64999999999998, 28.75], [-100.75, 29.0]]]]}, "2025-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.75, 29.5], 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"evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.36891157362203, 24.21756091647677, 24.801310899522605, 24.127686903211895]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.566977437337243, 26.4438250223796, 26.919020589192712, 25.253218587239587]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.991985855343287, 4.734485161732915, 5.073753696943316, 4.798215451993811]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.480867241006138, 5.208810798864874, 5.790478488443227, 5.677344616417997]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3909953690269783, 1.295652573898016, 1.3645005179208054, 1.2885574456801587]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.547920461199941, 1.417157483912958, 1.5839290662757735, 1.4759762912508416]}}