{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:50.655599", "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": "2022-Feb-20_to_2022-Feb-26_50.0_-14.5"}, "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": 2022020002215}, "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 20 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 26 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 106691.39308305713}, "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": ["Indian 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": -14.5}, "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": 50.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "50.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 48.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 51.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -13.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[48.35, -17.25], [48.25, -17.0], [48.47, -16.47], [48.82, -16.32], [48.85, -16.25], [48.75, -16.0], [48.85, -15.75], [48.75, 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{"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.47, -15.03], [49.25, -14.5], [49.47, -13.97], [49.82, -13.82], [49.97, -13.47], [50.5, -13.25], [51.03, -13.47], [51.18, -13.82], [51.53, -13.97], [51.75, -14.5], [51.53, -15.03], [51.18, -15.18], [51.03, -15.53], [50.5, -15.75], [49.97, -15.53], [49.82, -15.18], [49.47, -15.03]]]]}, "2022-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.75, -15.0], [48.85, -14.75], [48.75, -14.5], [48.97, -13.97], [49.32, -13.82], [49.35, -13.75], [49.25, -13.5], [49.47, -12.97], [50.0, -12.75], [50.53, -12.97], [50.68, -13.32], [51.03, -13.47], [51.18, -13.82], [51.53, -13.97], [51.68, -14.32], [52.03, -14.47], [52.25, -15.0], [52.03, -15.53], [51.68, -15.68], [51.53, -16.03], [51.18, -16.18], [51.03, -16.53], [50.5, -16.75], [49.97, -16.53], [49.8, -16.12], [49.5, -16.25], 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