{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:29.747745", "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": "2023-Jul-02_to_2023-Jul-07_17.0_-27.0"}, "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": 2023070001251}, "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": "July 02 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 07 2023"}, "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": 52614.09046088222}, "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"]}, "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": -27.0}, "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": 17.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "17.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 16.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -27.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -25.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[15.75, -25.0], [15.97, -24.47], [16.5, -24.25], [16.75, -24.35], [17.0, -24.25], [17.25, -24.35], [17.5, -24.25], [18.03, -24.47], [18.25, -25.0], [18.15, -25.25], [18.25, -25.5], [18.15, -25.75], [18.18, -25.82], [18.53, -25.97], [18.75, -26.5], [18.65, -26.75], [18.68, -26.82], [18.75, -26.85], [19.0, -26.75], [19.53, -26.97], [19.75, -27.5], [19.53, -28.03], [19.0, -28.25], [18.75, -28.15], [18.5, -28.25], [18.0, -28.04], [17.5, -28.25], [17.25, -28.15], [17.0, -28.25], [16.47, -28.03], [16.25, -27.5], [16.35, -27.25], [16.32, -27.18], [15.97, -27.03], [15.75, -26.5], [15.85, -26.25], [15.75, -26.0], [15.96, -25.5], [15.75, -25.0]]]]}}, "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": {"2023-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.97, -26.53], [15.75, -26.0], [15.97, -25.47], [16.32, -25.32], [16.47, -24.97], [17.0, -24.75], [17.53, -24.97], [17.75, -25.5], [17.54, -26.0], [17.75, -26.5], [17.65, -26.75], [17.75, -27.0], [17.53, -27.53], [17.0, -27.75], [16.47, -27.53], [16.25, -27.0], [16.35, -26.75], [16.32, -26.68], [15.97, -26.53]]]]}, "2023-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.75, -25.0], [15.97, -24.47], [16.5, -24.25], [17.03, -24.47], [17.18, -24.82], [17.53, -24.97], [17.75, -25.5], [17.65, -25.75], [17.75, -26.0], [17.65, -26.25], [17.75, -26.5], [17.65, -26.75], [17.75, -27.0], [17.53, -27.53], [17.0, -27.75], [16.47, -27.53], [16.25, -27.0], [16.35, -26.75], [16.32, -26.68], [15.97, -26.53], [15.75, -26.0], [15.96, -25.5], [15.75, -25.0]]]]}, "2023-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.75, -25.0], [15.97, -24.47], [16.5, -24.25], [17.03, -24.47], [17.18, -24.82], [17.25, -24.85], [17.5, -24.75], [18.03, -24.97], [18.25, -25.5], [18.15, -25.75], [18.25, -26.0], [18.15, -26.25], [18.25, -26.5], [18.07, -26.93], [18.5, -26.75], [18.75, -26.85], [19.0, 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-25.97], [16.32, -25.82], [16.35, -25.75], [16.25, -25.5], [16.35, -25.25], [16.25, -25.0], [16.47, -24.47], [17.0, -24.25], [17.25, -24.35], [17.5, -24.25], [18.03, -24.47], [18.25, -25.0], [18.15, -25.25], [18.25, -25.5], [18.15, -25.75], [18.18, -25.82], [18.53, -25.97], [18.75, -26.5], [18.65, -26.75], [18.68, -26.82], [18.75, -26.85], [19.0, -26.75], [19.53, -26.97], [19.75, -27.5], [19.53, -28.03], [19.0, -28.25], [18.75, -28.15], [18.5, -28.25], [18.0, -28.04], [17.5, -28.25], [16.97, -28.03], [16.82, -27.68], [16.47, -27.53], [16.32, -27.18], [15.97, -27.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.334038064632864}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.437381917697985}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.992697129512862, 15.877618842859704, 16.307043466520952, 16.92750399152851, 17.763561176156713, 17.36179088663846]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.42962678181061, 16.53070631175808, 17.25182199274849, 18.21403032270581, 19.464485331282958, 19.186135177405106]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.841387667425181, 3.784764415754258, 3.8830864466559567, 4.290093918049892, 5.148145626098977, 4.577706242632541]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.800452722741795, 4.1004952324904025, 4.693252305736962, 5.256081809027648, 6.334038064632864, 5.651328731701142]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1962076993148005, 1.1899409911229297, 1.1910163500509474, 1.3377167787055733, 1.6031397814498398, 1.4436022373667694]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4777970583196811, 1.2911896258434017, 1.3506809171112786, 1.6060089025266178, 1.9030585171610903, 1.7461227394127519]}}