{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:00.852518", "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-Sep-21_to_2025-Sep-24_320.5_-18.5"}, "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": 2025090002290}, "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 21 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 24 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": 81432.24495328659}, "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": ["Atlantic Ocean"]}, "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": -18.5}, "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": 320.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "320.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 320.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 323.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-36.25, -21.5], [-36.47, -22.03], [-37.0, -22.25], [-37.25, -22.15], [-37.32, -22.18], [-37.47, -22.53], [-38.0, -22.75], [-38.53, -22.53], [-38.68, -22.18], [-38.75, -22.15], [-39.0, -22.25], [-39.53, -22.03], [-39.75, -21.5], [-39.65, -21.25], [-39.75, -21.0], [-39.65, -20.75], [-39.75, -20.5], [-39.65, -20.25], [-39.68, -20.18], [-40.03, -20.03], [-40.25, -19.5], [-40.15, -19.25], [-40.25, -19.0], [-40.15, -18.75], [-40.25, -18.5], [-40.03, -17.97], [-39.68, -17.82], [-39.65, -17.75], [-39.75, -17.5], [-39.65, -17.25], [-39.75, -17.0], [-39.53, -16.47], [-39.0, -16.25], [-38.47, -16.47], [-38.3, -16.88], [-38.0, -16.75], [-37.47, -16.97], [-37.25, -17.5], [-37.35, -17.75], [-37.25, -18.0], [-37.35, -18.25], [-37.25, -18.5], [-37.35, -18.75], [-37.25, -19.0], [-37.47, -19.53], [-38.0, -19.75], [-37.47, -19.97], [-37.32, -20.32], [-36.97, -20.47], [-36.82, -20.82], [-36.47, -20.97], [-36.25, -21.5]], [[-38.3, -19.62], [-38.35, -19.75], [-38.32, -19.82], [-38.25, -19.85], [-38.0, -19.75], [-38.3, -19.62]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.25, -19.0], [-40.14999999999998, -18.75], [-40.25, -18.5], [-40.02999999999997, -17.97], [-39.68000000000001, -17.82], [-39.64999999999998, -17.75], [-39.75, -17.5], [-39.64999999999998, -17.25], [-39.75, -17.0], [-39.52999999999997, -16.47], [-39.0, -16.25], [-38.47000000000003, -16.47], [-38.30000000000001, -16.88], [-38.0, -16.75], [-37.47000000000003, -16.97], [-37.25, -17.5], [-37.35000000000002, -17.75], [-37.25, -18.0], [-37.35000000000002, -18.25], [-37.25, -18.5], [-37.35000000000002, -18.75], [-37.25, -19.0], [-37.47000000000003, -19.53], [-38.0, -19.75], [-37.47000000000003, -19.97], [-37.31999999999999, -20.32], [-36.97000000000003, -20.47], [-36.75, -21.0], [-36.85000000000002, -21.25], [-36.75, -21.5], [-36.97000000000003, -22.03], [-37.31999999999999, -22.18], [-37.47000000000003, -22.53], [-38.0, -22.75], [-38.52999999999997, -22.53], [-38.68000000000001, -22.18], [-38.75, -22.15], [-39.0, -22.25], [-39.52999999999997, -22.03], [-39.75, -21.5], [-39.64999999999998, -21.25], [-39.75, -21.0], [-39.64999999999998, -20.75], [-39.75, -20.5], [-39.64999999999998, -20.25], [-39.68000000000001, -20.18], [-40.02999999999997, -20.03], [-40.25, -19.5], [-40.14999999999998, -19.25], [-40.25, -19.0]], [[-38.30000000000001, -19.62], [-38.35000000000002, -19.75], [-38.31999999999999, -19.82], [-38.25, -19.85], [-38.0, -19.75], [-38.30000000000001, -19.62]]]]}, "2025-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.25, -19.0], [-40.14999999999998, -18.75], [-40.25, -18.5], [-40.02999999999997, -17.97], [-39.68000000000001, -17.82], [-39.64999999999998, -17.75], [-39.75, -17.5], [-39.64999999999998, -17.25], [-39.75, -17.0], [-39.52999999999997, -16.47], [-39.0, -16.25], [-38.47000000000003, -16.47], [-38.30000000000001, -16.88], [-38.0, -16.75], [-37.47000000000003, -16.97], [-37.25, -17.5], [-37.35000000000002, -17.75], [-37.25, -18.0], [-37.35000000000002, -18.25], [-37.25, -18.5], [-37.35000000000002, -18.75], [-37.25, -19.0], [-37.47000000000003, -19.53], [-38.0, -19.75], [-37.47000000000003, -19.97], [-37.31999999999999, -20.32], [-36.97000000000003, -20.47], [-36.81999999999999, -20.82], [-36.47000000000003, -20.97], [-36.25, -21.5], [-36.47000000000003, -22.03], [-37.0, -22.25], [-37.25, -22.15], [-37.31999999999999, -22.18], [-37.47000000000003, -22.53], [-38.0, -22.75], [-38.52999999999997, -22.53], [-38.68000000000001, -22.18], [-38.75, -22.15], [-39.0, -22.25], [-39.52999999999997, -22.03], [-39.75, -21.5], [-39.64999999999998, -21.25], [-39.75, -21.0], [-39.64999999999998, -20.75], [-39.75, -20.5], [-39.64999999999998, -20.25], [-39.68000000000001, -20.18], [-40.02999999999997, -20.03], [-40.25, -19.5], [-40.14999999999998, -19.25], [-40.25, -19.0]], [[-38.30000000000001, -19.62], [-38.35000000000002, -19.75], [-38.31999999999999, -19.82], [-38.25, -19.85], [-38.0, -19.75], [-38.30000000000001, -19.62]]]]}, "2025-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.25, -19.0], [-40.14999999999998, -18.75], [-40.25, -18.5], [-40.02999999999997, -17.97], [-39.68000000000001, -17.82], [-39.64999999999998, -17.75], [-39.75, -17.5], [-39.64999999999998, -17.25], [-39.75, -17.0], [-39.52999999999997, -16.47], [-39.0, -16.25], [-38.47000000000003, -16.47], [-38.30000000000001, -16.88], [-38.0, -16.75], [-37.47000000000003, -16.97], [-37.25, -17.5], [-37.35000000000002, -17.75], [-37.25, -18.0], [-37.35000000000002, -18.25], [-37.25, -18.5], [-37.35000000000002, -18.75], [-37.25, -19.0], [-37.47000000000003, -19.53], [-38.0, -19.75], [-37.47000000000003, -19.97], [-37.31999999999999, -20.32], [-36.97000000000003, -20.47], [-36.81999999999999, -20.82], [-36.47000000000003, -20.97], [-36.25, -21.5], [-36.47000000000003, -22.03], [-37.0, -22.25], [-37.25, -22.15], [-37.31999999999999, -22.18], [-37.47000000000003, -22.53], [-38.0, -22.75], [-38.52999999999997, -22.53], [-38.68000000000001, -22.18], [-38.75, -22.15], [-39.0, -22.25], [-39.52999999999997, -22.03], [-39.75, -21.5], [-39.64999999999998, -21.25], [-39.75, -21.0], [-39.64999999999998, -20.75], [-39.75, -20.5], [-39.64999999999998, -20.25], [-39.68000000000001, -20.18], [-40.02999999999997, -20.03], [-40.25, -19.5], [-40.14999999999998, -19.25], [-40.25, -19.0]], [[-38.30000000000001, -19.62], [-38.35000000000002, -19.75], [-38.31999999999999, -19.82], [-38.25, -19.85], [-38.0, -19.75], [-38.30000000000001, -19.62]]]]}, "2025-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.52999999999997, -20.97], [-37.0, -20.75], [-36.47000000000003, -20.97], [-36.25, -21.5], [-36.47000000000003, -22.03], [-37.0, -22.25], [-37.52999999999997, -22.03], [-37.75, -21.5], [-37.52999999999997, -20.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.5803681041247728}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.2296889606833739}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.570249741165753, 24.512061055501363, 24.61974614461269, 23.887400563557946]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.004539744059286, 24.894466654459677, 25.151687876383505, 23.887400563557946]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.2260730434016094, 1.184675634729004, 1.2784455584994032, 1.2225071151645466]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.540640908360274, 1.4888724548527534, 1.5803681041247728, 1.2225071151645466]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4211530269252184, 1.365058326342403, 1.5055901501303721, 1.2562519397395369]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5579838149155134, 1.5894310952596125, 1.6685677908113774, 1.2562519397395369]}}