{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:11:36.652616", "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": "2020-Feb-12_to_2020-Feb-14_16.5_-13.5"}, "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": 2020020001738}, "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 12 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 14 2020"}, "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": 68900.32609860988}, "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": ["Angola"]}, "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": -13.5}, "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": 16.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "16.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 16.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -13.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[15.25, -14.0], [15.47, -13.47], [15.823, -13.323], [15.854, -13.25], [15.75, -13.0], [15.97, -12.47], [16.5, -12.25], [17.03, -12.47], [17.198, -12.875], [17.5, -12.75], [17.75, -12.854], [18.0, -12.75], [18.25, -12.854], [18.5, -12.75], [19.03, -12.97], [19.25, -13.5], [19.146, -13.75], [19.177, -13.823], [19.53, -13.97], [19.677, -14.323], [20.03, -14.47], [20.25, -15.0], [20.03, -15.53], [19.5, -15.75], [19.25, -15.646], [19.0, -15.75], [18.75, -15.646], [18.5, -15.75], [18.25, -15.646], [18.0, -15.75], [17.75, -15.646], [17.5, -15.75], [17.25, -15.646], [17.0, -15.75], [16.47, -15.53], [16.323, -15.177], [15.97, -15.03], [15.823, -14.677], [15.47, -14.53], [15.25, -14.0]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-02-12T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[15.823223304703363, -14.676776695296637], [15.469669914110089, -14.530330085889911], [15.25, -14.0], [15.469669914110089, -13.469669914110089], [15.823223304703363, -13.323223304703363], [15.853553390593273, -13.25], [15.75, -13.0], [15.969669914110089, -12.469669914110089], [16.5, -12.25], [17.03033008588991, -12.469669914110089], [17.19822330470336, -12.875], [17.5, -12.75], [17.75, -12.853553390593273], [18.0, -12.75], [18.25, -12.853553390593273], [18.5, -12.75], [19.03033008588991, -12.969669914110089], [19.25, -13.5], [19.146446609406727, -13.75], [19.17677669529664, -13.823223304703363], [19.53033008588991, -13.969669914110089], [19.67677669529664, -14.323223304703363], [20.03033008588991, -14.469669914110089], [20.25, -15.0], [20.03033008588991, -15.530330085889911], [19.5, -15.75], [19.25, -15.646446609406727], [19.0, -15.75], [18.75, -15.646446609406727], [18.5, -15.75], [18.25, -15.646446609406727], [18.0, -15.75], [17.75, -15.646446609406727], [17.5, -15.75], [17.25, -15.646446609406727], [17.0, -15.75], [16.46966991411009, -15.530330085889911], [16.32322330470336, -15.176776695296637], [15.969669914110089, -15.030330085889911], [15.823223304703363, -14.676776695296637]]]}, "2020-02-13T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[15.823223304703363, -14.676776695296637], [15.469669914110089, -14.530330085889911], [15.25, -14.0], [15.469669914110089, -13.469669914110089], [15.823223304703363, -13.323223304703363], [15.853553390593273, -13.25], [15.75, -13.0], [15.969669914110089, -12.469669914110089], [16.5, -12.25], [17.03033008588991, -12.469669914110089], [17.19822330470336, -12.875], [17.5, -12.75], [17.75, -12.853553390593273], [18.0, -12.75], [18.25, -12.853553390593273], [18.5, -12.75], [19.03033008588991, -12.969669914110089], [19.25, -13.5], [19.146446609406727, -13.75], [19.17677669529664, -13.823223304703363], [19.53033008588991, -13.969669914110089], [19.67677669529664, -14.323223304703363], [20.03033008588991, -14.469669914110089], [20.25, -15.0], [20.03033008588991, -15.530330085889911], [19.5, -15.75], [19.25, 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t2m", "description": "The daily evolution of mean t2m.", "value": [22.155731837899452, 22.66382620900987, 22.28889868039056]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.844717339434794, 23.382261072840777, 23.551311355642554]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.759247943308006, 2.2944709514251778, 1.9208103222216797]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.2148307382205985, 2.9759107664431212, 2.5903170171520173]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.563469121204122, 2.1018561867413856, 1.7351245887781053]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9966223115634494, 3.045829846903414, 2.166536842276772]}}