{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:36.987041", "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": "2023-May-28_to_2023-Jun-01_46.5_-14.0"}, "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": 2023050002721}, "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": "May 28 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 01 2023"}, "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": "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": 78119.74560751228}, "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": ["Madagascar"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": -14.0}, "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": 46.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "46.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 45.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 47.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[45.37, -12.8], [45.32, -12.68], [44.97, -12.53], [44.75, -12.0], [44.85, -11.75], [44.75, -11.5], [44.97, -10.97], [45.5, -10.75], [45.75, -10.85], [46.0, -10.75], [46.53, -10.97], [46.68, -11.32], [47.03, -11.47], [47.25, -12.0], [47.15, -12.25], [47.18, -12.32], [47.53, -12.47], [47.68, -12.82], [48.03, -12.97], [48.25, -13.5], [48.15, -13.75], [48.25, -14.0], [48.15, -14.25], [48.25, -14.5], [48.03, -15.03], [47.68, -15.18], [47.53, -15.53], [47.0, -15.75], [46.75, -15.65], [46.68, -15.68], [46.53, -16.03], [46.0, -16.25], [45.47, -16.03], [45.25, -15.5], [45.35, -15.25], [45.25, -15.0], [45.35, -14.75], [45.25, -14.5], [45.35, -14.25], [45.32, -14.18], [44.97, -14.03], [44.75, -13.5], [44.97, -12.97], [45.37, -12.8]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "Madagascar"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.97, -12.53], [44.75, -12.0], [44.97, -11.47], [45.5, -11.25], [45.75, -11.35], [46.0, -11.25], [46.53, -11.47], [46.75, -12.0], [46.65, -12.25], [46.68, -12.32], [47.03, -12.47], [47.18, -12.82], [47.25, -12.85], [47.5, -12.75], [48.03, -12.97], [48.25, -13.5], [48.03, -14.03], [47.63, -14.2], [47.75, -14.5], [47.53, -15.03], [47.18, -15.18], [47.03, -15.53], [46.68, -15.68], [46.53, -16.03], [46.0, -16.25], [45.47, -16.03], [45.25, -15.5], [45.35, -15.25], [45.25, -15.0], [45.35, -14.75], [45.25, -14.5], [45.35, -14.25], [45.25, -14.0], [45.47, -13.47], [45.82, -13.32], [45.85, -13.25], [45.82, -13.18], [45.47, -13.03], [45.32, -12.68], [44.97, -12.53]]]]}, "2023-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.75, -11.5], [44.97, -10.97], [45.5, -10.75], [45.75, -10.85], [46.0, -10.75], [46.53, -10.97], [46.68, -11.32], [47.03, -11.47], [47.25, -12.0], [47.15, -12.25], [47.18, -12.32], [47.53, -12.47], [47.68, -12.82], [48.03, -12.97], [48.25, -13.5], [48.15, -13.75], [48.25, -14.0], 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[44.97, -12.53], [44.75, -12.0], [44.85, -11.75], [44.75, -11.5]], [[45.75, -12.85], [45.82, -12.82], [45.85, -12.75], [45.82, -12.68], [45.75, -12.65], [45.5, -12.75], [45.75, -12.85]]]]}, "2023-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.97, -14.03], [44.75, -13.5], [44.97, -12.97], [45.5, -12.75], [45.75, -12.85], [46.0, -12.75], [46.25, -12.85], [46.5, -12.75], [47.03, -12.97], [47.18, -13.32], [47.53, -13.47], [47.75, -14.0], [47.65, -14.25], [47.75, -14.5], [47.53, -15.03], [47.0, -15.25], [46.47, -15.03], [46.32, -14.68], [46.25, -14.65], [46.0, -14.75], [45.47, -14.53], [45.32, -14.18], [44.97, -14.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.415003582754366}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 0.9842723668835494}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.39240516798145, 27.462456759255986, 27.484392581621023, 27.378125630692637, 27.262672157346344]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.615088819801542, 27.91914240097384, 27.935535129041057, 27.722744908936136, 27.401785825695242]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.867871437856824, 1.0159644681826534, 1.0580973973579633, 0.9880399181198163, 0.8328540568380974]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.0269949539663799, 1.4078576198093629, 1.415003582754366, 1.3302031411348025, 0.9302693278121978]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5454521306796092, 1.7486162137900803, 1.81466959595398, 1.7232064475180884, 1.5375938981511064]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7518904366809471, 2.17287887826222, 2.16211924409895, 2.1961020827098983, 1.7145041902763616]}}