{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:15:15.724437", "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-Oct-27_to_2021-Nov-01_13.5_-15.0"}, "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": 2021100002536}, "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": "October 27 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 01 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": 50689.65919542419}, "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": -15.0}, "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": 13.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "13.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 13.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 15.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.0}, "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": "MultiPolygon", "coordinates": [[[[12.85, -14.75], [12.75, -14.5], [12.85, -14.25], [12.75, -14.0], [12.97, -13.47], [13.32, -13.32], [13.47, -12.97], [13.82, -12.82], [13.97, -12.47], [14.5, -12.25], [15.03, -12.47], [15.25, -13.0], [15.15, -13.25], [15.25, -13.5], [15.03, -14.03], [14.68, -14.18], [14.53, -14.53], [14.18, -14.68], [14.15, -14.75], [14.18, -14.82], [14.25, -14.85], [14.5, -14.75], [15.03, -14.97], [15.18, -15.32], [15.53, -15.47], [15.75, -16.0], [15.53, -16.53], [15.18, -16.68], [15.03, -17.03], [14.68, -17.18], [14.53, -17.53], [14.0, -17.75], [13.75, -17.65], [13.5, -17.75], [12.97, -17.53], [12.75, -17.0], [12.97, -16.47], [13.32, -16.32], [13.35, -16.25], [13.32, -16.18], [12.97, -16.03], [12.75, -15.5], [12.85, -15.25], [12.75, -15.0], [12.85, -14.75]]]]}}, "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": {"2021-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.75, -14.5], [12.97, -13.97], [13.32, -13.82], [13.35, -13.75], [13.25, -13.5], [13.47, -12.97], [13.82, -12.82], [13.97, -12.47], [14.5, -12.25], [15.03, -12.47], [15.25, -13.0], [15.15, -13.25], [15.25, -13.5], [15.03, -14.03], [14.68, -14.18], [14.53, -14.53], [14.18, -14.68], [14.15, -14.75], [14.25, -15.0], [14.03, -15.53], [13.5, -15.75], [12.97, -15.53], [12.75, -15.0], [12.85, -14.75], [12.75, -14.5]]]]}, "2021-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.75, -15.0], [12.85, -14.75], [12.75, -14.5], [12.85, -14.25], [12.75, -14.0], [12.97, -13.47], [13.32, -13.32], [13.47, -12.97], [13.82, -12.82], [13.97, -12.47], [14.5, -12.25], [15.03, -12.47], [15.25, -13.0], [15.15, -13.25], [15.25, -13.5], [15.03, -14.03], [14.68, -14.18], [14.53, -14.53], [14.18, -14.68], [14.15, -14.75], [14.18, -14.82], [14.25, -14.85], [14.5, -14.75], [15.03, -14.97], [15.18, -15.32], [15.53, -15.47], [15.75, -16.0], [15.53, -16.53], [15.0, -16.75], [14.75, -16.65], [14.5, -16.75], [14.25, -16.65], [14.13, -16.7], [14.25, -17.0], [14.03, -17.53], [13.5, -17.75], [12.97, -17.53], [12.75, -17.0], [12.97, -16.47], [13.38, -16.3], [13.32, -16.18], [12.97, -16.03], [12.75, -15.5], [12.85, -15.25], [12.75, -15.0]]]]}, "2021-10-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.75, -15.0], [12.85, -14.75], [12.75, -14.5], [12.85, -14.25], [12.75, -14.0], [12.97, -13.47], [13.32, -13.32], [13.47, -12.97], [13.82, -12.82], [13.97, -12.47], [14.5, -12.25], [15.03, -12.47], [15.25, -13.0], [15.15, -13.25], [15.25, -13.5], [15.03, -14.03], [14.68, -14.18], [14.53, -14.53], [14.18, -14.68], [14.15, -14.75], [14.18, -14.82], [14.25, -14.85], [14.5, -14.75], [15.03, -14.97], [15.18, -15.32], [15.53, -15.47], [15.75, -16.0], [15.53, -16.53], [15.18, -16.68], [15.03, -17.03], [14.68, -17.18], [14.53, -17.53], [14.0, -17.75], [13.75, -17.65], [13.5, -17.75], [12.97, -17.53], [12.75, -17.0], [12.97, -16.47], [13.32, -16.32], [13.35, -16.25], [13.32, -16.18], [12.97, -16.03], [12.75, -15.5], [12.85, -15.25], [12.75, -15.0]]]]}, "2021-10-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.75, -15.0], [12.96, -14.5], [12.75, -14.0], [12.97, -13.47], [13.32, -13.32], [13.47, -12.97], [13.82, -12.82], [13.97, -12.47], [14.5, -12.25], [15.03, -12.47], [15.25, -13.0], [15.15, -13.25], [15.25, -13.5], [15.03, -14.03], [14.68, -14.18], [14.53, -14.53], [14.13, -14.7], [14.18, -14.82], [14.25, -14.85], [14.5, -14.75], [15.03, -14.97], [15.18, -15.32], [15.53, -15.47], [15.75, -16.0], [15.53, -16.53], [15.18, -16.68], [15.03, -17.03], [14.68, -17.18], [14.53, -17.53], [14.0, -17.75], [13.75, -17.65], [13.5, -17.75], [12.97, -17.53], [12.75, -17.0], [12.97, -16.47], [13.32, -16.32], [13.35, -16.25], [13.32, -16.18], [12.97, -16.03], [12.75, -15.5], [12.85, -15.25], [12.75, -15.0]]]]}, "2021-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.46, -16.0], [13.32, -15.68], [12.97, -15.53], [12.75, -15.0], [12.97, -14.47], [13.5, -14.25], [14.03, -14.47], [14.18, -14.82], [14.53, -14.97], [14.75, -15.5], [14.63, -15.8], [15.03, -15.97], [15.25, -16.5], [15.03, -17.03], [14.68, -17.18], [14.53, -17.53], [14.0, -17.75], [13.75, -17.65], [13.5, -17.75], [12.97, -17.53], [12.75, -17.0], [12.97, -16.47], [13.32, -16.32], [13.46, -16.0]]]]}, "2021-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.46, -16.0], [13.32, -15.68], [12.97, -15.53], [12.75, -15.0], [12.97, -14.47], [13.5, -14.25], [14.03, -14.47], [14.18, -14.82], [14.53, -14.97], [14.75, -15.5], [14.54, -16.0], [14.75, -16.5], [14.65, -16.75], [14.75, -17.0], [14.53, -17.53], [14.0, -17.75], [13.75, -17.65], [13.5, -17.75], [12.97, -17.53], [12.75, -17.0], [12.97, -16.47], [13.32, -16.32], [13.46, -16.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.116120665493213}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.652030324243511}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.911401710358405, 26.22754654007491, 27.407104806287236, 26.469194308157, 27.318221540519914, 27.08347741281858]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.841109225191417, 29.65378806207758, 31.678185966419562, 30.896227430909164, 30.159774527487286, 30.77456172483852]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.652496480230089, 2.506785838525957, 3.304390802017782, 2.3660965750942857, 2.708319470526751, 2.88757089437388]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.64789065293013, 3.8652418904562182, 4.116120665493213, 3.656848188762808, 3.001623338691388, 3.6077423819417618]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.492844218422558, 1.97707576063218, 2.364759825104365, 1.5405463732306683, 1.5955888729387055, 1.7741623450082318]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9065505703358072, 3.229933723514762, 3.315962220360407, 1.9686235940996053, 2.2135572861808366, 2.7242873729419097]}}