{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:10.415328", "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-28_to_2021-Sep-02_356.0_17.0"}, "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": 2021080002922}, "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 28 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 02 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 71069.46875255747}, "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": ["Mali", "Mauritania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 17.0}, "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": 356.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "356.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 356.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.53, 17.53], [-7.0, 17.75], [-6.75, 17.65], [-6.5, 17.75], [-6.25, 17.65], [-6.0, 17.75], [-5.75, 17.65], [-5.5, 17.75], [-4.97, 17.53], [-4.82, 17.18], [-4.75, 17.15], [-4.68, 17.18], [-4.65, 17.25], [-4.75, 17.5], [-4.53, 18.03], [-4.0, 18.25], [-3.75, 18.15], [-3.5, 18.25], [-2.97, 18.03], [-2.75, 17.5], [-2.97, 16.97], [-3.32, 16.82], [-3.46, 16.5], [-3.25, 16.0], [-3.47, 15.47], [-3.82, 15.32], [-3.97, 14.97], [-4.5, 14.75], [-4.8, 14.88], [-4.97, 14.47], [-5.5, 14.25], [-6.03, 14.47], [-6.25, 15.0], [-6.15, 15.25], [-6.18, 15.32], [-6.25, 15.35], [-6.5, 15.25], [-7.03, 15.47], [-7.18, 15.82], [-7.53, 15.97], [-7.75, 16.5], [-7.65, 16.75], [-7.75, 17.0], [-7.53, 17.53]]]]}, "2021-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.53, 17.53], [-7.0, 17.75], [-6.75, 17.65], [-6.5, 17.75], [-6.25, 17.65], [-6.0, 17.75], [-5.75, 17.65], [-5.5, 17.75], [-4.97, 17.53], [-4.82, 17.18], [-4.75, 17.15], [-4.68, 17.18], [-4.65, 17.25], [-4.75, 17.5], [-4.53, 18.03], [-4.0, 18.25], [-3.75, 18.15], [-3.5, 18.25], [-2.97, 18.03], [-2.75, 17.5], [-2.97, 16.97], [-3.32, 16.82], [-3.46, 16.5], [-3.25, 16.0], [-3.47, 15.47], [-3.82, 15.32], [-3.97, 14.97], [-4.5, 14.75], [-4.8, 14.88], [-4.97, 14.47], [-5.5, 14.25], [-6.03, 14.47], [-6.25, 15.0], [-6.15, 15.25], [-6.18, 15.32], [-6.25, 15.35], [-6.5, 15.25], [-7.03, 15.47], [-7.18, 15.82], [-7.53, 15.97], [-7.75, 16.5], [-7.65, 16.75], [-7.75, 17.0], [-7.53, 17.53]]]]}, "2021-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.53, 17.53], [-7.0, 17.75], [-6.75, 17.65], [-6.5, 17.75], [-6.25, 17.65], [-6.0, 17.75], [-5.75, 17.65], [-5.5, 17.75], [-4.97, 17.53], [-4.82, 17.18], [-4.75, 17.15], [-4.68, 17.18], [-4.65, 17.25], [-4.75, 17.5], [-4.53, 18.03], [-4.0, 18.25], [-3.75, 18.15], [-3.5, 18.25], [-2.97, 18.03], [-2.75, 17.5], [-2.97, 16.97], [-3.32, 16.82], [-3.46, 16.5], [-3.25, 16.0], [-3.47, 15.47], [-3.82, 15.32], [-3.97, 14.97], [-4.5, 14.75], [-4.8, 14.88], [-4.97, 14.47], [-5.5, 14.25], [-6.03, 14.47], [-6.25, 15.0], [-6.15, 15.25], [-6.18, 15.32], [-6.25, 15.35], [-6.5, 15.25], [-7.03, 15.47], [-7.18, 15.82], [-7.53, 15.97], [-7.75, 16.5], [-7.65, 16.75], [-7.75, 17.0], [-7.53, 17.53]]]]}, "2021-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.53, 19.03], [-4.0, 19.25], [-3.47, 19.03], [-3.32, 18.68], [-2.97, 18.53], [-2.75, 18.0], [-2.97, 17.47], [-3.37, 17.3], [-3.25, 17.0], [-3.47, 16.47], [-4.0, 16.25], [-4.53, 16.47], [-4.75, 17.0], [-4.54, 17.5], [-4.75, 18.0], [-4.65, 18.25], [-4.75, 18.5], [-4.53, 19.03]]]]}, "2021-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.53, 19.03], [-4.0, 19.25], [-3.47, 19.03], [-3.32, 18.68], [-2.97, 18.53], [-2.75, 18.0], [-2.97, 17.47], [-3.37, 17.3], [-3.25, 17.0], [-3.47, 16.47], [-4.0, 16.25], [-4.53, 16.47], [-4.75, 17.0], [-4.54, 17.5], [-4.75, 18.0], [-4.65, 18.25], [-4.75, 18.5], [-4.53, 19.03]]]]}, "2021-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.53, 19.03], [-4.0, 19.25], 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.946236979344002, 3.0951576980690962, 2.6851157728024595, 2.3718576485941583, 2.66261796438215, 2.585064109512601]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.05988906895476, 4.543395933443719, 3.210439733335079, 2.4907595753729765, 3.1580340173686636, 3.053346352964013]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.1275927277954048, 1.6881988109870487, 1.4676699702918234, 1.2351775353647234, 1.4490258579367226, 1.4772820427246407]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.6664317876895676, 2.3727362897567876, 1.885757960634945, 1.2624687399179135, 1.5929792364095776, 1.6065876527459673]}}