{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:10.587355", "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-Aug-20_to_2021-Aug-22_33.0_-16.5"}, "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": 2021080002660}, "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 20 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 22 2021"}, "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": 83028.37598975305}, "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": ["Malawi", "Mozambique", "Zimbabwe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": []}, "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": -16.5}, "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": 33.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 29.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 35.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[28.75, -16.0], [28.97, -15.47], [29.5, -15.25], [29.75, -15.35], [30.0, -15.25], [30.53, -15.47], [30.68, -15.82], [30.75, -15.85], [31.0, -15.75], [31.25, -15.85], [31.32, -15.82], [31.47, -15.47], [32.0, -15.25], [32.25, -15.35], [32.5, -15.25], [32.75, -15.35], [32.82, -15.32], [32.97, -14.97], [33.5, -14.75], [33.75, -14.85], [34.0, -14.75], [34.25, -14.85], [34.5, -14.75], [35.03, -14.97], [35.25, -15.5], [35.15, -15.75], [35.18, -15.82], [35.25, -15.85], [35.5, -15.75], [36.03, -15.97], [36.25, -16.5], [36.03, -17.03], [35.5, -17.25], [35.25, -17.15], [35.0, -17.25], [34.75, -17.15], [34.5, -17.25], [34.25, -17.15], [34.0, -17.25], [33.75, -17.15], [33.68, -17.18], [33.65, -17.25], [33.75, -17.5], [33.53, -18.03], [33.0, -18.25], [32.75, -18.15], [32.5, -18.25], [31.97, -18.03], [31.82, -17.68], [31.47, -17.53], [31.32, -17.18], [31.25, -17.15], [31.18, -17.18], [31.03, -17.53], [30.5, -17.75], [29.97, -17.53], [29.75, -17.0], [29.85, -16.75], [29.82, -16.68], [29.75, -16.65], [29.5, -16.75], [28.97, -16.53], [28.75, -16.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.5, -16.75], [28.97, -16.53], [28.75, -16.0], [28.97, -15.47], [29.5, -15.25], [29.75, -15.35], [30.0, -15.25], [30.53, -15.47], [30.68, -15.82], [30.75, -15.85], [31.0, -15.75], [31.25, -15.85], [31.32, -15.82], [31.47, -15.47], [32.0, -15.25], [32.25, -15.35], [32.5, -15.25], [32.75, -15.35], [32.82, -15.32], [32.97, -14.97], [33.5, -14.75], [33.75, -14.85], [34.0, -14.75], [34.25, -14.85], [34.5, -14.75], [35.03, -14.97], [35.25, -15.5], [35.15, -15.75], [35.18, -15.82], [35.25, -15.85], [35.5, -15.75], [36.03, -15.97], [36.25, -16.5], [36.03, -17.03], [35.5, -17.25], [35.25, -17.15], [35.0, -17.25], [34.75, -17.15], [34.5, -17.25], [34.25, -17.15], [34.0, -17.25], [33.75, -17.15], [33.68, -17.18], [33.65, -17.25], [33.75, -17.5], [33.53, -18.03], [33.0, -18.25], [32.75, -18.15], [32.5, -18.25], [31.97, -18.03], [31.82, -17.68], [31.47, -17.53], [31.32, -17.18], [31.25, -17.15], [31.18, -17.18], [31.03, -17.53], [30.5, -17.75], [29.97, -17.53], [29.75, -17.0], [29.85, -16.75], [29.82, -16.68], [29.75, -16.65], [29.5, -16.75]]]]}, "2021-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.5, -16.75], [28.97, -16.53], [28.75, -16.0], [28.97, -15.47], [29.5, -15.25], [29.75, -15.35], [30.0, -15.25], [30.53, -15.47], [30.68, -15.82], [30.75, -15.85], [31.0, -15.75], [31.25, -15.85], [31.32, -15.82], [31.47, -15.47], [32.0, -15.25], [32.25, -15.35], [32.5, -15.25], [32.75, -15.35], [32.82, -15.32], [32.97, -14.97], [33.5, -14.75], [33.75, -14.85], [34.0, -14.75], [34.25, -14.85], [34.5, -14.75], [35.03, -14.97], [35.25, -15.5], [35.15, -15.75], [35.18, -15.82], [35.25, -15.85], [35.5, -15.75], [36.03, -15.97], [36.25, -16.5], [36.03, -17.03], [35.5, -17.25], [35.25, -17.15], 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[35.18, -15.82], [35.25, -15.85], [35.5, -15.75], [36.03, -15.97], [36.25, -16.5], [36.03, -17.03], [35.5, -17.25], [35.25, -17.15], [35.0, -17.25], [34.75, -17.15], [34.5, -17.25], [34.25, -17.15], [34.0, -17.25], [33.75, -17.15], [33.68, -17.18], [33.65, -17.25], [33.75, -17.5], [33.53, -18.03], [33.0, -18.25], [32.75, -18.15], [32.5, -18.25], [31.97, -18.03], [31.82, -17.68], [31.47, -17.53], [31.32, -17.18], [31.25, -17.15], [31.18, -17.18], [31.03, -17.53], [30.5, -17.75], [29.97, -17.53], [29.75, -17.0], [29.85, -16.75], [29.82, -16.68], [29.75, -16.65], [29.5, -16.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.9845833312943455}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.214027285664664}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.36038360894031, 25.516164785495732, 25.413141150255]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.93206303184826, 28.073824102515175, 27.640860832509702]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.2389979731450405, 3.2701780161107377, 3.1329058677382142]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.8562341721834628, 3.9845833312943455, 3.590306960498822]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6059290715479424, 1.585711450382797, 1.5031908405508017]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8538627631464724, 1.88478529420093, 1.7343346512700881]}}