{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:18:07.246674", "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-Aug-22_to_2020-Aug-25_345.5_16.0"}, "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": 2020080002698}, "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": "August 22 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 25 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 53475.34593966163}, "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": ["Mauritania", "Senegal"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": ["Atlantic 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": 16.0}, "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": 345.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "345.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 342.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 346.0}, "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": 16.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-13.354, 15.75], [-13.25, 15.5], [-13.47, 14.97], [-14.0, 14.75], [-14.25, 14.854], [-14.5, 14.75], [-14.75, 14.854], [-15.0, 14.75], [-15.53, 14.97], [-15.677, 15.323], [-16.0, 15.457], [-16.323, 15.323], [-16.47, 14.97], [-17.0, 14.75], [-17.25, 14.854], [-17.5, 14.75], [-18.03, 14.97], [-18.25, 15.5], [-18.146, 15.75], [-18.25, 16.0], [-18.03, 16.53], [-17.5, 16.75], [-17.25, 16.646], [-17.177, 16.677], [-17.03, 17.03], [-16.5, 17.25], [-16.25, 17.146], [-16.0, 17.25], [-15.75, 17.146], [-15.5, 17.25], [-15.25, 17.146], [-15.0, 17.25], [-14.75, 17.146], [-14.5, 17.25], [-14.25, 17.146], [-14.0, 17.25], [-13.47, 17.03], [-13.25, 16.5], [-13.354, 16.25], [-13.25, 16.0], [-13.354, 15.75]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-08-22T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-15.146446609406723, 15.75], [-15.25, 16.0], [-15.030330085889887, 16.53033008588991], [-14.5, 16.75], 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[-13.353553390593277, 15.75], [-13.25, 15.5], [-13.469669914110113, 14.969669914110089], [-14.0, 14.75], [-14.25, 14.853553390593278], [-14.5, 14.75], [-14.75, 14.853553390593278], [-15.0, 14.75], [-15.530330085889887, 14.969669914110089], [-15.67677669529661, 15.323223304703363], [-16.0, 15.457106781186557], [-16.32322330470339, 15.323223304703363], [-16.469669914110113, 14.969669914110089], [-17.0, 14.75], [-17.25, 14.853553390593278], [-17.5, 14.75], [-18.030330085889887, 14.969669914110089], [-18.25, 15.5], [-18.146446609406723, 15.75]]]}, "2020-08-24T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-18.146446609406723, 15.75], [-18.25, 16.0], [-18.030330085889887, 16.53033008588991], [-17.5, 16.75], [-17.25, 16.646446609406723], [-17.17677669529661, 16.67677669529664], [-17.030330085889887, 17.03033008588991], [-16.5, 17.25], [-16.25, 17.146446609406723], [-16.0, 17.25], [-15.75, 17.146446609406723], [-15.5, 17.25], [-15.25, 17.146446609406723], [-15.0, 17.25], [-14.75, 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"description": "Maximum t2m anomaly recorded over entire duration", "value": 3.527094156405326}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.9842355714750544}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.534757255406873, 30.609092046671208, 31.52846212272175, 30.787730241728298]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.26404009391439, 33.40743498320478, 34.14247455489152, 33.4394904614831]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9477894532070508, 1.6348070743351413, 2.544769779605073, 1.7812289978778386]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.1433811101657056, 2.592419828075606, 3.527094156405326, 2.5784762722717005]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4413894335094282, 1.4624452339986123, 2.276988880607262, 1.6047109879568753]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4972744329407082, 1.6821238177187732, 2.6089218579834146, 1.9377416822092122]}}