{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:16.164505", "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": "2024-Jan-23_to_2024-Jan-25_18.0_-31.5"}, "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": 2024010001868}, "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": "January 23 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 25 2024"}, "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": 67271.47486625751}, "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": ["Namibia", "South Africa"]}, "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": -31.5}, "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": 18.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "18.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 18.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 22.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -27.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[18.35, -30.25], [18.25, -30.0], [18.47, -29.47], [18.82, -29.32], [18.85, -29.25], [18.75, -29.0], [18.85, -28.75], [18.75, -28.5], [18.97, -27.97], [19.5, -27.75], [19.75, -27.85], [20.0, -27.75], [20.43, -27.93], [20.25, -27.5], [20.47, -26.97], [21.0, -26.75], [21.25, -26.85], [21.5, -26.75], [22.03, -26.97], [22.18, -27.32], [22.53, -27.47], [22.75, -28.0], [22.65, -28.25], [22.75, -28.5], [22.65, -28.75], [22.75, -29.0], [22.53, -29.53], [22.18, -29.68], [22.03, -30.03], [21.68, -30.18], [21.53, -30.53], [21.0, -30.75], [20.7, -30.62], [20.53, -31.03], [20.0, -31.25], [19.75, -31.15], [19.68, -31.18], [19.53, -31.53], [19.18, -31.68], [19.03, -32.03], [18.5, -32.25], [18.25, -32.15], [18.0, -32.25], [17.47, -32.03], [17.25, -31.5], [17.47, -30.97], [17.82, -30.82], [17.97, -30.47], [18.32, -30.32], [18.35, -30.25]], [[20.25, -29.65], [20.18, -29.68], [20.15, -29.75], [20.18, -29.82], [20.3, -29.87], [20.35, -29.75], [20.32, -29.68], [20.25, -29.65]], [[20.68, -28.32], [20.75, -28.35], [20.88, -28.3], [20.82, -28.18], [20.57, -28.07], [20.68, -28.32]]]]}}, "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": {"2024-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.97, -30.47], [18.32, -30.32], [18.35, -30.25], [18.25, -30.0], [18.47, -29.47], [18.82, -29.32], [18.85, -29.25], [18.75, -29.0], [18.85, -28.75], [18.75, -28.5], [18.97, -27.97], [19.5, -27.75], [19.75, -27.85], [20.0, -27.75], [20.43, -27.93], [20.25, -27.5], [20.47, -26.97], [21.0, -26.75], [21.25, -26.85], [21.5, -26.75], [22.03, -26.97], [22.18, -27.32], [22.53, -27.47], [22.75, -28.0], [22.65, -28.25], [22.75, -28.5], [22.65, -28.75], [22.75, -29.0], [22.53, -29.53], [22.18, -29.68], [22.03, -30.03], [21.68, -30.18], [21.53, -30.53], [21.0, -30.75], [20.7, -30.62], [20.53, -31.03], [20.0, -31.25], [19.75, -31.15], [19.68, -31.18], [19.53, -31.53], [19.18, -31.68], [19.03, -32.03], [18.5, -32.25], [18.25, -32.15], [18.0, -32.25], [17.47, -32.03], [17.25, -31.5], [17.47, -30.97], [17.82, -30.82], [17.97, -30.47]], [[20.35, -29.75], [20.32, -29.68], [20.25, -29.65], [20.18, -29.68], [20.15, -29.75], [20.18, -29.82], [20.3, -29.87], [20.35, -29.75]], [[20.82, -28.18], [20.57, -28.07], [20.68, -28.32], [20.75, -28.35], [20.88, -28.3], [20.82, -28.18]]]]}, "2024-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.97, -30.47], [18.32, -30.32], [18.35, -30.25], [18.25, -30.0], [18.47, -29.47], [18.82, -29.32], [18.85, -29.25], [18.75, -29.0], [18.85, -28.75], [18.75, -28.5], [18.97, -27.97], [19.5, -27.75], [19.75, -27.85], [20.0, -27.75], [20.43, -27.93], [20.25, -27.5], [20.47, -26.97], [21.0, -26.75], [21.25, -26.85], [21.5, -26.75], [22.03, -26.97], [22.18, -27.32], [22.53, -27.47], [22.75, -28.0], [22.65, -28.25], [22.75, -28.5], [22.65, -28.75], [22.75, -29.0], [22.53, -29.53], [22.18, -29.68], [22.03, -30.03], [21.68, -30.18], [21.53, -30.53], [21.0, -30.75], [20.7, -30.62], [20.53, -31.03], [20.0, -31.25], [19.75, -31.15], [19.68, -31.18], [19.53, -31.53], [19.18, -31.68], [19.03, -32.03], [18.5, -32.25], [18.25, -32.15], [18.0, -32.25], [17.47, -32.03], [17.25, -31.5], [17.47, -30.97], [17.82, -30.82], [17.97, -30.47]], [[20.35, -29.75], [20.32, -29.68], [20.25, -29.65], [20.18, -29.68], [20.15, -29.75], [20.18, -29.82], [20.3, -29.87], [20.35, -29.75]], [[20.82, -28.18], [20.57, -28.07], [20.68, -28.32], [20.75, -28.35], [20.88, -28.3], [20.82, -28.18]]]]}, "2024-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.97, -30.47], [18.32, -30.32], [18.35, -30.25], [18.25, -30.0], [18.47, -29.47], [18.82, -29.32], [18.85, -29.25], [18.75, -29.0], [18.85, -28.75], [18.75, -28.5], [18.97, -27.97], [19.5, -27.75], [19.75, -27.85], [20.0, -27.75], [20.43, -27.93], [20.25, -27.5], [20.47, -26.97], [21.0, -26.75], [21.25, -26.85], [21.5, -26.75], [22.03, -26.97], [22.18, -27.32], [22.53, -27.47], [22.75, -28.0], [22.65, -28.25], [22.75, -28.5], [22.65, -28.75], [22.75, -29.0], [22.53, -29.53], [22.18, -29.68], [22.03, -30.03], [21.68, -30.18], [21.53, -30.53], [21.0, -30.75], [20.7, -30.62], [20.53, -31.03], [20.0, -31.25], [19.75, -31.15], [19.68, -31.18], [19.53, -31.53], [19.18, -31.68], [19.03, -32.03], [18.5, -32.25], [18.25, -32.15], [18.0, -32.25], [17.47, -32.03], [17.25, -31.5], [17.47, -30.97], [17.82, -30.82], [17.97, -30.47]], [[20.35, -29.75], [20.32, -29.68], [20.25, -29.65], [20.18, -29.68], [20.15, -29.75], [20.18, -29.82], [20.3, -29.87], [20.35, -29.75]], [[20.82, -28.18], [20.57, -28.07], [20.68, -28.32], [20.75, -28.35], [20.88, -28.3], [20.82, -28.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.862957986737342}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.319695470445499}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.82622901191786, 30.19153396815767, 30.109263284447593]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.663874254280074, 33.78584589329296, 33.16197050374393]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.056057608687481, 4.465637073534349, 4.437391729114668]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.667108243776113, 5.736607298226659, 5.862957986737342]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5443787077120594, 1.6632247922550942, 1.5991373409901393]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.2294667694788997, 2.2122710736607165, 2.04092410543917]}}