{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:59.050273", "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": "2021-Sep-25_to_2021-Oct-02_44.0_-17.5"}, "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": 2021090002724}, "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 25 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 02 2021"}, "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": 84999.52583528451}, "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": -17.5}, "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": 44.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 42.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 45.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[42.5, -16.75], [42.8, -16.87], [42.85, -16.75], [42.75, -16.5], [42.97, -15.97], [43.5, -15.75], [44.03, -15.97], [44.2, 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each time step", "value": {"2021-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.5, -17.75], [43.97, -17.53], [43.75, -17.0], [43.97, -16.47], [44.5, -16.25], [44.75, -16.35], [45.0, -16.25], [45.53, -16.47], [45.75, -17.0], [45.53, -17.53], [45.0, -17.75], [44.75, -17.65], [44.5, -17.75]]]]}, "2021-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.97, -16.47], [44.5, -16.25], [44.75, -16.35], [45.0, -16.25], [45.53, -16.47], [45.75, -17.0], [45.53, -17.53], [45.0, -17.75], [44.75, -17.65], [44.68, -17.68], [44.53, -18.03], [44.0, -18.25], [43.47, -18.03], [43.25, -17.5], [43.47, -16.97], [43.82, -16.82], [43.97, -16.47]]]]}, "2021-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.25, -18.0], [43.35, -17.75], [43.25, -17.5], [43.47, -16.97], [43.82, -16.82], [43.97, -16.47], [44.5, -16.25], [44.75, -16.35], [45.0, -16.25], [45.53, -16.47], [45.75, -17.0], [45.54, -17.5], [45.75, -18.0], [45.65, -18.25], [45.75, 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anomaly recorded over entire duration", "value": 2.62689270420924}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.2344891136666543}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.933542202459364, 26.719083736385187, 26.89709871364812, 27.323609709867924, 27.051402256764845, 26.872369026817694, 26.140143007183326, 25.61561525691087]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.07261447869729, 27.129759972755608, 27.47755792496622, 28.580755205612206, 28.487649482734525, 28.9119801828017, 27.420169726758388, 25.61561525691087]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.113500811736202, 0.9962946677420822, 1.1196704689711665, 1.4745587291186861, 1.3219058840305824, 1.1908465434247175, 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