{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:13:34.436397", "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-May-14_to_2020-May-16_18.5_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": 2020050001967}, "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 14 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 16 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": 50998.637166087225}, "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": ["Chad"]}, "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": 14.5}, "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": 18.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "18.5\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": 20.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 13.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[15.47, 14.03], [16.0, 14.25], [16.25, 14.146], [16.323, 14.177], [16.47, 14.53], [16.823, 14.677], [16.97, 15.03], [17.5, 15.25], [17.75, 15.146], [18.0, 15.25], [18.25, 15.146], [18.5, 15.25], [18.75, 15.146], [19.0, 15.25], [19.25, 15.146], [19.5, 15.25], [20.03, 15.03], [20.177, 14.677], [20.53, 14.53], [20.75, 14.0], [20.53, 13.47], [20.0, 13.25], [19.75, 13.354], [19.5, 13.25], [19.25, 13.354], [19.0, 13.25], [18.75, 13.354], [18.5, 13.25], [18.25, 13.354], [18.0, 13.25], [17.75, 13.354], [17.677, 13.323], [17.646, 13.25], [17.75, 13.0], [17.53, 12.47], [17.0, 12.25], [16.5, 12.457], [16.0, 12.25], [15.47, 12.47], [15.25, 13.0], [15.354, 13.25], [15.25, 13.5], [15.47, 14.03]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-05-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[15.353553390593273, 13.25], [15.25, 13.5], [15.469669914110089, 14.030330085889911], [16.0, 14.25], 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12.469669914110089], [15.25, 13.0], [15.353553390593273, 13.25]]]}, "2020-05-15T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[15.353553390593273, 13.25], [15.25, 13.5], [15.469669914110089, 14.030330085889911], [16.0, 14.25], [16.25, 14.146446609406727], [16.32322330470336, 14.176776695296637], [16.46966991411009, 14.530330085889911], [16.82322330470336, 14.676776695296637], [16.96966991411009, 15.030330085889911], [17.5, 15.25], [17.75, 15.146446609406727], [18.0, 15.25], [18.25, 15.146446609406727], [18.5, 15.25], [18.75, 15.146446609406727], [19.0, 15.25], [19.25, 15.146446609406727], [19.5, 15.25], [20.03033008588991, 15.030330085889911], [20.17677669529664, 14.676776695296637], [20.53033008588991, 14.530330085889911], [20.75, 14.0], [20.53033008588991, 13.469669914110089], [20.0, 13.25], [19.75, 13.353553390593273], [19.5, 13.25], [19.25, 13.353553390593273], [19.0, 13.25], [18.75, 13.353553390593273], [18.5, 13.25], [18.25, 13.353553390593273], [18.0, 13.25], [17.75, 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{"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [36.500547009174, 36.898109764159074, 36.37060919202986]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.0729592120970826, 2.436970840298319, 1.7355367830940087]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.274328152182818, 2.7324715642072306, 1.945697644015297]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5695840800012366, 1.9339537364988881, 1.4078599409636057]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8050004585424395, 2.3502145039592848, 1.6275327356550686]}}