{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:21.980774", "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": "2026-Feb-27_to_2026-Mar-03_313.5_-23.5"}, "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": 2026020000677}, "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": "February 27 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 03 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 74132.80669834834}, "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": -23.5}, "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": 313.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "313.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 312.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 318.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -24.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.75}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-46.25, -24.15], [-46.32, -24.18], [-46.47, -24.53], [-47.0, -24.75], [-47.53, -24.53], [-47.75, -24.0], [-47.65, 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["S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.75, -23.5], [-47.52999999999997, -22.97], [-47.0, -22.75], [-46.75, -22.85], [-46.5, -22.75], [-46.25, -22.85], [-46.0, -22.75], [-45.47000000000003, -22.97], [-45.25, -23.5], [-45.47000000000003, -24.03], [-46.0, -24.25], [-46.25, -24.15], [-46.31999999999999, -24.18], [-46.47000000000003, -24.53], [-47.0, -24.75], [-47.52999999999997, -24.53], [-47.75, -24.0], [-47.64999999999998, -23.75], [-47.75, -23.5]]]]}, "2026-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.25, -22.0], [-48.02999999999997, -21.47], [-47.5, -21.25], [-47.25, -21.35], [-47.0, -21.25], [-46.47000000000003, -21.47], [-46.31999999999999, -21.82], [-46.25, -21.85], [-46.0, -21.75], [-45.47000000000003, -21.97], [-45.31999999999999, -22.32], [-45.25, 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20.363080792549397, 20.07123855199569, 19.987729136149085]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.983191426595056, 18.48625844319662, 18.761978403727255, 18.352169291178427, 19.152898406982445]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.614345862878821, -2.9278577819141947, -2.7395468060672057, -3.0005039695847677, -2.9979684234716273]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.240172139311653, -3.596293418871369, -3.483687127614587, -4.019096861787318, -3.518285741280124]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4527777061703648, -1.7065075327257038, -1.5905246666286033, 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