{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:46.846079", "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-Apr-14_to_2025-Apr-21_315.5_-8.0"}, "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": 2025040001830}, "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": "April 14 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 21 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 67332.20988629319}, "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": ["Brazil"]}, "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": -8.0}, "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": 315.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "315.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 314.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 317.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-45.0, -6.25], [-44.75, -6.35], [-44.5, -6.25], [-44.25, -6.35], [-44.0, -6.25], [-43.75, -6.35], [-43.5, -6.25], [-42.97, -6.47], [-42.82, -6.82], [-42.47, -6.97], [-42.25, -7.5], [-42.47, -8.03], [-42.82, -8.18], [-42.97, -8.53], [-43.5, -8.75], [-43.75, -8.65], [-43.82, -8.68], [-43.97, -9.03], [-44.32, -9.18], [-44.35, -9.25], [-44.25, -9.5], [-44.47, -10.03], [-45.0, -10.25], [-45.5, -10.04], [-46.0, -10.25], [-46.53, -10.03], [-46.75, -9.5], [-46.54, -9.0], [-46.75, -8.5], [-46.53, -7.97], [-46.18, -7.82], [-46.03, -7.47], [-45.68, -7.32], [-45.65, -7.25], [-45.75, -7.0], [-45.53, -6.47], [-45.0, -6.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.75, -7.0], [-45.52999999999997, -6.47], [-45.0, -6.25], [-44.5, -6.46], [-44.0, -6.25], [-43.47000000000003, -6.47], [-43.25, -7.0], [-43.35000000000002, -7.25], [-43.25, -7.5], [-43.35000000000002, -7.75], [-43.25, -8.0], [-43.47000000000003, -8.53], [-44.0, -8.75], [-44.25, -8.65], [-44.5, -8.75], [-44.75, -8.65], [-45.0, -8.75], [-45.52999999999997, -8.53], [-45.75, -8.0], [-45.54000000000002, -7.5], [-45.75, -7.0]]]]}, "2025-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.75, -7.0], [-45.52999999999997, -6.47], [-45.0, -6.25], [-44.75, -6.35], [-44.5, -6.25], [-44.25, -6.35], [-44.0, -6.25], [-43.47000000000003, -6.47], [-43.25, -7.0], [-43.35000000000002, -7.25], [-43.25, -7.5], [-43.35000000000002, -7.75], [-43.25, -8.0], [-43.47000000000003, -8.53], [-44.0, -8.75], [-44.25, -8.65], [-44.5, -8.75], [-44.75, -8.65], [-45.0, -8.75], [-45.52999999999997, -8.53], [-45.75, -8.0], [-45.54000000000002, -7.5], [-45.75, -7.0]]]]}, "2025-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.75, -7.0], [-45.52999999999997, -6.47], [-45.0, -6.25], [-44.75, -6.35], [-44.5, 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{"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.878112767024664}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.38409231276745, 27.415867106119833, 27.721209578080675, 27.97145118107869, 28.22416180697354, 27.876728917682044, 27.913284331676948, 27.535520595974447]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.751826222737634, 27.95959879557296, 28.477764383951865, 29.20223770141604, 29.20205968221029, 28.781882222493493, 28.73430531819662, 27.91106313069662]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.5806060375672766, 1.5102997324772574, 1.6626108738748722, 2.0050252113063203, 2.218310985534042, 1.824086179865238, 1.8168948685406274, 1.7816648794720227]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.8290854936033156, 1.8786277627351637, 2.0342176041448283, 2.972435162884153, 2.7854111441960185, 2.341806751523393, 2.361303705692592, 2.0362102993559006]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.739246519817611, 1.6543113086456978, 1.6619843720751908, 1.8869745270615337, 2.0349308694451067, 1.6541807487961022, 1.6276289838532585, 1.5974814535595314]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.93593574231071, 1.9895524811498622, 2.0312050902311456, 2.929343731019561, 2.7144754341188957, 2.218507236501739, 2.040267438540587, 1.7322926867339197]}}