{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:00.074519", "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-19_to_2025-Sep-21_301.0_-21.5"}, "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": 2025090002174}, "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 19 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 21 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 75383.46241074361}, "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": ["Bolivia, Plurinational State of", "Brazil", "Paraguay"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America", "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": -21.5}, "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": 301.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "301.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 300.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 302.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-60.18, -19.32], [-60.15, -19.25], [-60.25, -19.0], [-60.15, -18.75], [-60.25, -18.5], [-60.03, -17.97], [-59.5, -17.75], [-58.97, -17.97], [-58.82, -18.32], [-58.47, -18.47], [-58.32, -18.82], [-58.25, -18.85], [-58.0, -18.75], [-57.47, -18.97], [-57.32, -19.32], [-56.97, -19.47], [-56.75, -20.0], [-56.85, -20.25], [-56.75, -20.5], [-56.96, -21.0], [-56.75, -21.5], [-56.97, -22.03], [-57.5, -22.25], [-58.0, -22.04], [-58.5, -22.25], [-58.75, -22.15], [-59.0, -22.25], [-59.25, -22.15], [-59.5, -22.25], [-60.03, -22.03], [-60.25, -21.5], [-60.15, -21.25], [-60.18, -21.18], [-60.53, -21.03], [-60.75, -20.5], [-60.65, -20.25], [-60.75, -20.0], [-60.53, -19.47], [-60.18, -19.32]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["South-American-Monsoon", "S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.75, -20.0], [-60.52999999999997, -19.47], [-60.18000000000001, -19.32], [-60.14999999999998, -19.25], [-60.25, -19.0], [-60.14999999999998, -18.75], [-60.25, -18.5], [-60.02999999999997, -17.97], [-59.5, -17.75], [-58.97000000000003, -17.97], [-58.81999999999999, -18.32], [-58.47000000000003, -18.47], [-58.31999999999999, -18.82], [-58.25, -18.85], [-58.0, -18.75], [-57.47000000000003, -18.97], [-57.31999999999999, -19.32], [-56.97000000000003, -19.47], [-56.75, -20.0], [-56.85000000000002, -20.25], [-56.75, -20.5], [-56.95999999999998, -21.0], [-56.75, -21.5], [-56.97000000000003, -22.03], [-57.5, -22.25], [-58.0, -22.04], [-58.5, -22.25], [-58.75, -22.15], [-59.0, -22.25], [-59.25, -22.15], [-59.5, -22.25], [-60.02999999999997, -22.03], [-60.25, -21.5], [-60.14999999999998, -21.25], [-60.18000000000001, -21.18], [-60.52999999999997, -21.03], [-60.75, -20.5], [-60.64999999999998, -20.25], [-60.75, -20.0]]]]}, "2025-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.75, -20.0], [-60.52999999999997, -19.47], [-60.18000000000001, -19.32], [-60.14999999999998, -19.25], [-60.25, -19.0], [-60.14999999999998, -18.75], [-60.25, -18.5], [-60.02999999999997, -17.97], [-59.5, -17.75], [-58.97000000000003, -17.97], [-58.81999999999999, -18.32], [-58.47000000000003, -18.47], [-58.31999999999999, -18.82], [-58.25, -18.85], [-58.0, -18.75], [-57.47000000000003, -18.97], [-57.31999999999999, -19.32], [-56.97000000000003, -19.47], [-56.75, -20.0], [-56.85000000000002, -20.25], [-56.75, -20.5], [-56.95999999999998, -21.0], [-56.75, -21.5], [-56.97000000000003, -22.03], [-57.5, -22.25], [-58.0, -22.04], [-58.5, -22.25], [-58.75, -22.15], [-59.0, -22.25], [-59.25, -22.15], [-59.5, -22.25], [-60.02999999999997, -22.03], [-60.25, -21.5], [-60.14999999999998, -21.25], [-60.18000000000001, -21.18], [-60.52999999999997, -21.03], [-60.75, -20.5], [-60.64999999999998, -20.25], [-60.75, -20.0]]]]}, "2025-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.75, -20.0], [-60.52999999999997, -19.47], [-60.18000000000001, -19.32], [-60.14999999999998, -19.25], [-60.25, -19.0], [-60.14999999999998, -18.75], [-60.25, -18.5], [-60.02999999999997, -17.97], [-59.5, -17.75], [-58.97000000000003, -17.97], [-58.81999999999999, -18.32], [-58.47000000000003, -18.47], [-58.31999999999999, -18.82], [-58.25, -18.85], [-58.0, -18.75], [-57.47000000000003, -18.97], [-57.31999999999999, -19.32], [-56.97000000000003, -19.47], [-56.75, -20.0], [-56.85000000000002, -20.25], [-56.75, -20.5], [-56.95999999999998, -21.0], [-56.75, -21.5], [-56.97000000000003, -22.03], [-57.5, -22.25], [-58.0, -22.04], [-58.5, -22.25], [-58.75, -22.15], [-59.0, -22.25], [-59.25, -22.15], [-59.5, -22.25], [-60.02999999999997, -22.03], [-60.25, -21.5], [-60.14999999999998, -21.25], [-60.18000000000001, -21.18], [-60.52999999999997, -21.03], [-60.75, -20.5], [-60.64999999999998, -20.25], [-60.75, -20.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.7929400241191615}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.1038555798386245}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.979689436692468, 32.33739809867666, 33.31351848504488]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [33.195137278238974, 33.365552520751976, 34.023745473225915]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.768346463206683, 5.822228754665525, 6.720991521643667]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.210395327227559, 7.18811569094089, 7.7929400241191615]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3000709967990765, 1.3228385263921114, 1.5462573171511464]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4810234692082291, 1.4933403896214221, 1.7062924539213893]}}